NXP Semiconductors
User’s Guide
Document Number: KTFRDMBC3770UG
Rev. 2.0, 8/2016
© 2016 NXP B.V.
Freedom expansion boards FRDM-BC3770-EVB
and FRDM-BC3770-EVM
Figure 1. FRDM-BC3770-EVM
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
2NXP Semiconductors
Contents
1 Important notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2 Getting started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
3 Understanding the Freedom platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
4 Getting to know the hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
5 Installing the software and setting up the hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
6 Using BC3770 components with Processor Expert. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
7 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
8 Board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
9 Board bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
10 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
11 Revision history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
NXP Semiconductors 3
Important notice
1 Important notice
NXP provides the enclosed product(s) under the following conditions:
This evaluation kit is intended for use of ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY.
It is provided as a sample IC pre-soldered to a printed circuit board to make it easier to access inputs, outputs, and
supply terminals. This evaluation board may be used with any development system or other source of I/O signals
by simply connecting it to the host MCU or computer board via off-the-shelf cables. This evaluation board is not a
Reference Design and is not intended to represent a final design recommendation for any particular application.
Final device in an application will be heavily dependent on proper printed circuit board layout and heat sinking
design as well as attention to supply filtering, transient suppression, and I/O signal quality.
The goods provided may not be complete in terms of required design, marketing, and or manufacturing related
protective considerations, including product safety measures typically found in the end product incorporating the
goods. Due to the open construction of the product, it is the user's responsibility to take any and all appropriate
precautions with regard to electrostatic discharge. In order to minimize risks associated with the customers
applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or
procedural hazards. For any safety concerns, contact NXP sales and technical support services.
Should this evaluation kit not meet the specifications indicated in the kit, it may be returned within 30 days from the
date of delivery and will be replaced by a new kit.
NXP reserves the right to make changes without further notice to any products herein. NXP makes no warranty,
representation or guarantee regarding the suitability of its products for any particular purpose, nor does NXP
assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and
all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary
in different applications and actual performance may vary over time. All operating parameters, including “Typical”,
must be validated for each customer application by customer’s technical experts.
NXP does not convey any license under its patent rights nor the rights of others. NXP products are not designed,
intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the NXP product
could create a situation where personal injury or death may occur.
Should the Buyer purchase or use NXP products for any such unintended or unauthorized application, the Buyer
shall indemnify and hold NXP and its officers, employees, subsidiaries, affiliates, and distributors harmless against
all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any
claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges
NXP was negligent regarding the design or manufacture of the part. NXP™ and the NXP logo are trademarks of
NXP Semiconductors. All other product or service names are the property of their respective owners.
© 2016 NXP B.V.
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
4NXP Semiconductors
Getting started
2 Getting started
2.1 Kit contents/packing list
2.1.1 FRDM-BC3770-EVM
If you ordered the FRDM-BC3770-EVM, your kit contents include:
• Assembled and tested evaluation board/module in anti-static bag.
• FRDM-KL25Z Freedom board with programming loaded
• Two USB Mini-B to Standard-A cables
• Quick Start Guide, Analog Tools
• Warranty card
2.1.2 FRDM-BC3770-EVB
If you ordered the FRDM-BC3770-EVB, your kit contents include:
• Assembled and tested evaluation board/module in anti-static bag.
• Quick Start Guide, Analog Tools
• Warranty card
2.2 Jump start
NXP’s analog product development boards help to easily evaluate NXP products. These tools support analog mixed signal and power
solutions including monolithic ICs using proven high-volume SMARTMOS mixed signal technology, and system-in-package devices
utilizing power, SMARTMOS and MCU dies. NXP products enable longer battery life, smaller form factor, component count reduction,
ease of design, lower system cost, and improved performance in powering state of the art systems.
•Go to www.nxp.com/FRDM-BC3770-EVB
•Review your Tool Summary Page
• Look for
• Download documents, software, and other information
Once the files are downloaded, review the user guide in the bundle. The user guide includes setup instructions, BOM, and schematics.
Jump start bundles are available on each tool summary page with the most relevant and current information. The information includes
everything needed for design.
2.3 Required equipment and software
To use this kit, you need:
• A Win 32 or higher PC
• A Lithion Ion (or Lithium Polymer) battery 3.7 V – 4.2 V, Max Charge Current 2.0 A
• Two USB Mini-B (Male) to Standard-A (Male) cables (included in FRDM-BC3770-EVM kit)
• A FRDM-KL25Z board with programming loaded (included in FRDM-BC3770-EVM kit)
2.4 System requirements
The kit requires the following to function properly with the software:
• Windows® XP, Windows 7, or Vista in 32- and 64-bit versions, Windows 8
Jump Start Your Design
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
NXP Semiconductors 5
Understanding the Freedom platform
3 Understanding the Freedom platform
The NXP Freedom development platform is a small, low-power, cost-effective evaluation and development system for quick application
prototyping and demonstration of Kinetis MCU families. The assembled platform incudes the FRDM-BC3770-EVB expansion board
mounted to the KL25Z board.
Figure 2. Freedom development platform
3.1 FRDM-BC3770-EVB
The Freedom expansion board FRDM-BC3770-EVB is a fully programmable switching charger with dual-path output for single-cell Li-Ion
and Li-Polymer battery. This dual-path output allows mobile applications with fully discharged battery or dead battery to boot up the
system. The high-efficiency and switch-mode operations of the BC3770 reduce heat dissipation and allow a higher current capability for
a given package size. In addition, the FRDM-BC3770-EVB features a single 20 V maximum input and charges the battery with a current
of up to 2.0 A. The charging parameters and operating modes are fully programmable over an I2C Interface operating up to 400 kHz.
Features
• The FRDM-BC3770-EVB is a highly integrated synchronous switch-mode charger, featuring integrated OVP and Power
FET.
• The charger and boost regulator circuits switch at 1.5 MHz to minimize the size of external passive components
• The BC3770 is able to operate as a boost regulator for USB-OTG function via either I2C command or an external pin from
the host/processor
• The BC3770 is available in a 25-bump, 2.27 mm x 2.17 mm, WLCSP package
FRDM-KL25Z
FRDM-BC3770-EVB
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
6NXP Semiconductors
Understanding the Freedom platform
3.2 FRDM-KL25Z
The FRDM-KL25Z is an ultra-low-cost development platform for Kinetis L Series KL1x (KL14/15) and KL2x (KL24/25) MCUs built on the
ARM® Cortex™-M0+ processor. Features include easy access to MCU I/O, battery-ready, low-power operation, a standard-based form
factor with expansion board options, and a built-in debug interface for flash programming and run-control. The FRDM-KL25Z is supported
by a range of NXP and third-party development software.
The user can use mbed.org at no charge, with full access to the online SDK, tools, reusable code (no downloads, installations or licenses),
and an active community of developers.
3.2.1 Features
• MKL25Z128VLK4 MCU - 48 MHz, 128 KB flash, 16 KB SRAM, USB OTG (FS), 80LQFP
• Capacitive touch “slider,” MMA8451Q accelerometer, tri-color LED
• Easy access to MCU I/O
• Sophisticated OpenSDA debug interface
• Mass storage device flash programming interface (default) - no tool installation required to evaluate demo apps
• P&E Multilink interface provides run-control debugging and compatibility with IDE tools
• Open-source data logging application provides an example for customer, partner and enthusiast development on the
OpenSDA circuit
• mbed™ enabled
To view an online video providing an introduction to using the FRDM-KL25Z, go to the following URL:
http://www.NXP.com/webapp/video_vault/videoSummary.sp?code=FRDMKL25ZINTRO_VID
3.3 Block diagram
The high level system block diagram here outlines the way the NXP standard products are used to implement an example airbag ECU.
Figure 3. BC3770 simplified block diagram
LX
COUT
L1
VSYS
CHGOUT
PGND
PMI D
VBUS
SCL
SDA
INTB
CIN
SUSPEND
BOOT
30mΩ
BATREG
CBAT
3.7V
Li-I on
CBST
70mΩ
50mΩ50mΩ
BATSNSN
VL
CMI D
CTL1
VBUS
IBUS
IBAT
VBAT
CTL2
PGND
HSD
LSD
LX
ISYS
VSYS
SCL
SDA
INTB
SUSPEND
CHGENB
PWM
DRI VE
AI CL/ OVP
CHGEN
SHDN
SHDNB
SYNCH BUCK
OTG BOOST
CHARGER
I2C
CONTR OL
REGISTERS
VDDI O
VI O
NOBATGND BATDETDGND
BAT-
CVL
REGULATOR
VL
VL
PMI D
2.2μF
2.2μF
1μF 1μH
22nF
10μF
10μF
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
NXP Semiconductors 7
Getting to know the hardware
4 Getting to know the hardware
The Freedom platform consists of the FRDM-BC3770-EVB board mounted to a FRDM-KL25Z board.
4.1 FRDM-BC3770-EVB board overview
The FRDM-BC3770-EVB expansion Board (EVB) is an easy-to-use circuit board allowing the user to exercise all the functions of the
MC32BC3770CS fully programmable switching charger. A PC communicates to the EVB through the FRDM-KL25Z's USB communication
port.
4.1.1 FRDM-BC3770-EVB board description
The FRDM-BC3770-EVB board consists of the MC32BC3770CS chip and its associated circuitry.
Figure 4. FRDM-BC3770-EVB (top view)
MC32BC3770CS
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
8NXP Semiconductors
Getting to know the hardware
Figure 5. FRDM-BC3770-EVB (bottom view)
Table 1. Board description
Name Description
MC32BC3770CS A fully programmable switching charger with dual-path output for single-cell Li-Ion and Li-Polymer battery
Current Sense Amplifiers Three integrated current sense amplifiers (CSAs) permit the real-time measurement of current and voltage on
the VBUS input supply, the VSYS output supply and the battery (VBAT)
Power Supply
A programmable electronic load (ELOAD), 0 A to 1.0 A, in 50 mA steps. It is used to demonstrate system per-
formance with an active load applied to either the VSY supply, or the battery VBAT. When attached to the bat-
tery, the ELOAD can be used to discharge the battery in a controlled manner
Current Sense
Amplifiers
Electronic Load
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
NXP Semiconductors 9
Getting to know the hardware
4.1.2 LED display
The following LEDs are provided as visual indicators on the FRDM-BC3770-EVB evaluation board:
Figure 6. LED locations on the FRDM-BC3770-EVB evaluation board
Table 2. LEDs
Schematic label Name Description
LED1 LED Green
This indicates the target has been selected/deselected
through the GUI. It turns on when the target is selected and
turns off when the target is deselected. (Note: Exiting the
GUI while the target is still selected results in the LED
remaining on.)
LED2 LED Red This indicates the presence of charge current. It turns on
when a charge current of 10 mA or greater occurs.
LED1 LED2
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
10 NXP Semiconductors
Getting to know the hardware
4.1.3 Connectors
Input/output connectors function as follows:
Figure 7. Connector locations on the FRDM-BC3770-EVB evaluation board
Table 3. Connectors
Schematic label Name Description
J1 CON_2X8 2 x 8 Female Arduino connector. Supports addition of shield boards.
J2 CON_2X10 2 x 10 Female Arduino connector. Supports addition of shield boards.
J3 USB MINI-B USB Mini port supplies power to the Freedom platform
J6 TB_3x1
Three-position detachable terminal block. The bottom terminal connects to positive
battery pole and the middle terminal connects to negative battery pole. The top termi-
nal is used for battery detection.
J8 TB_2x1 Two-position detachable terminal block. Supports eternal temperature measurement
(NTC). Note: currently not supported in software.
J9 CON_2X8 2 x 8 Female Arduino connector. Supports addition of shield boards.
J10 CON_2X6 2 x 6 Female Arduino connector. Supports addition of shield boards.
J3
J9
J2
J10
J1
J6
J8
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
NXP Semiconductors 11
Getting to know the hardware
4.1.4 Test point definitions
Figure 8 and Ta bl e 4 define the evaluation board test points and their locations.
Figure 8. Test point locations on the FRDM-BC3770-EVB evaluation board
The following test-point jumpers provide access to signals on the MC32BC3770CS IC:
Table 4. Test points
Schematic label Description
BOOT Bootstrap Capacitor Voltage
ELOAD_DAC Voltage DAC Output
LDAC DAC Address Latch
LX Buck Supply Switching Node
NCHGEN Charger Enable (Active Low)
NINT Interrupt Out (Active Low)
NSHDN Charger Shutdown (Active Low)
NTC_TEMP NTC Thermistor Voltage
PMID BC3770 VBUS Bypass Output
RDY/BSY DAC Ready/Busy Output
SCL1 I2C Clock Signal to the BC3770
PGND3
NSHDN
NCHGEN
NINTSDA1SCL1
VL
VBUS
PMID
BOOT
LX
SCL2
SDA2
ELOAD_DAC
VSYS
PGND2
PGND1
VSYS_ALERT VBAT_ALERT
VBUS_ALERT
NTC_TEMP
VBAT
LDAC
RDY/BSY
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
12 NXP Semiconductors
Getting to know the hardware
SCL2 I2C Clock Signal to other devices
SDA1 I2C Data Signal to/from BC3770
SDA2 I2C Data Signal to/from other devices
VBAT Battery Positive Terminal
VBAT_ALERT VBAT CSA Interrupt
VBUS USB/Charge Source Input
VBUS_ALERT VBUS CSA Interrupt
VL BC3770 Internal Regulator Output (Do not Load)
VSYS System Supply Output
VSYS_ALERT VSYS CSA Interrupt
PGND1 Analog Power Ground
PGND2 Analog Power Ground
PGND3 Analog Power Ground
Table 4. Test points (continued)
Schematic label Description
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
NXP Semiconductors 13
Getting to know the hardware
4.1.5 Jumper definitions
The following table defines the evaluation board jumper positions and explains their functions.
Figure 9. Jumper locations on the FRDM-BC3770-EVB evaluation board
.
Table 5. Jumpers
Jumper Name Description Pins 1-2
(default) Pins 2-3
J4 VBUS Input Power Source For Charger Shorted –
J5 VDDIO Power Source for Digital Interface Shorted –
J7 CHGOUT Charger Output to Battery Shorted –
J11 VSYS Power Output to System Load Shorted –
J12 NOBAT Shorted –
J20 ELOAD
SELECT Connects ELOAD to VBAT or VSYS VBAT VSYS
J21 VDAC VDAC Output to drive ELOAD Shorted –
J20
J12
J4
J11
J21
J7
J5
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
14 NXP Semiconductors
Getting to know the hardware
4.2 Accessory interface board
The FRDM-BC3770-EVB kit is typically used with the FRDM-25KLZ shown in Figure 10. The FRDM-KL25Z is an ultra-low-cost
development platform for Kinetis L Series KL1x (KL14/15) and KL2x (KL24/25) MCUs built on ARM® Cortex™-M0+ processor. Its features
include easy access to MCU I/O, battery-ready, low-power operation, a standard-based form factor with expansion board options, and a
built-in debug interface for flash programming and run-control. The FRDM-KL25Z is supported by a range of NXP and third-party
development software.
Figure 10. FRDM-KL25Z Freedom development platform
For more information on the FRDM-KL25Z board, go to the NXP product summary page at:
http://www.NXP.com/webapp/sps/site/prod_summary.jsp?code=FRDM-KL25Z
Ca
p
RGB LED
MMA8451Q
KL25Z 80 LQFP
t
!"#$%B
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
NXP Semiconductors 15
Installing the software and setting up the hardware
5 Installing the software and setting up the hardware
5.1 Video tutorials
A series of video tutorials provide in depth information on the operations described in this section. To access these tutorials, go to the
following url:http://www.nxp.com/webapp/sps/site/prod_summary.jsp?code=FRDM-BC3770-EVB. In the “Jump Start Your Design” block,
click on the “How To Videos” link.
The following tutorials apply to this section
5.2 Installing the MC32BC3770 graphical user interface on the computer
The latest version of the MC32BC3770 GUI is designed to run on any Windows 8, Windows 7, Vista, or XP-based operating system.
To install the software:
•Go to www.nxp.com/analogtools and select the kit.
• Click on the link to open the corresponding Tool Summary Page.
• Look for “Jump Start Your Design”.
• Download the MC32BC3770_GUI(x.x.x.x) file to a directory on the computer.
• Open the MC32BC3770_GUI_(x.x.x.x).zip file and extract the compressed files. (The software creates a subdirectory
containing the extracted files.)
• Open the subdirectory containing the extracted files and run the setup.exe file. The Installation Wizard guides the user
through the rest of the process.
• When the installation completes, the MC32BC3770 Charger Panel GUI automatically opens on the computer. In addition,
a BC3770_GUI icon appears on the desktop.
For an in-depth tutorial on installing the MC32BC3770 GUI, see the video “01A - BC3770 GUI Install Video” in the FRDM-BC3770-EVB
Product Summary page.
5.3 Starting the MC32BC3770 GUI
To launch the MC32BC3770 GUI:
Table 6. Video tutorials
Title Description
01A - BC3770 GUI Install Video Describes how to download and install the GUI on a PC
01B - BC3770 Battery Connections Video Describes the Freedom platform links to a Lithium Ion battery, the PC, and a power supply
01C - BC3770 GUI Launch Video Describes how to launch the GUI and verify the connections
02 - BC3770 GUI Main Log Video Describes the GUI Startup screen and the use of the Main Log
03 - BC3770 GUI I2C Communication Video Describes how to control 12C Communications through the GUI
04 - BC3770 GUI Control Registers Video Describes the GUI Control Register functions (System, VBUS, Charger, and Interrupt register parameters)
05 - BC3770 GUI Script Editor Video Describes GUI scripting capability
06 - BC3770 GUI Charge Plots Video Describes the GUI Charge Plot function
07 - BC3770 GUI Discharge Plots Video Describes the GUI Discharge Plot function
08A - BC3770 GUI Load Sharing Video Describes the load sharing support via the GUI
08B - BC3770 GUI Battery Supplement Video Describes battery supplement support via the GUI
08C - BC3770 GUI OTG Boost video Describes OTG Boost support via the GUI
Get Started with the FRDM-BC3770-EVB Evaluation Kit
Jump Start Your Design
BC3770 battery charger graphical user interface (GUI) ...
Everything you need to get started with the FRDM-BC3770-EVB ...
How to Videos
Click
Here
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
16 NXP Semiconductors
Installing the software and setting up the hardware
• From your desktop, click on the BC3770_GUI icon. The Graphic User Interface (GUI) appears.
5.3.1 The MC32BC3770 GUI startup screen
Figure 11 shows the MC32BC3770 GUI Graphical User Interface (GUI) screen displayed at startup. A row of tabs along the top of the
screen selects among four types of control panel functions. (At startup the Control Register function is active.) The display related to the
selected function appears immediately below the row of tabs.
The USB Connection Panel at the top left of the screen verifies the GUI is properly connected to the target. It also controls certain
parameters related to the connection. For complete instructions on using the USB Connection Panel, see the video “01C - BC3770 GUI
Launch Video” in the FRDM-BC3770-EVB Product Summary page.
A Main Log in the middle left panel maintains a running record of all events occurring during the MC32BC3770 GUI session. For
instructions on using the Main Log, see the video “02 - BC3770 GUI Main Log Video” in the FRDM-BC3770-EVB Product Summary page.
The Direct 12C Communication Panel at the bottom left of the screen reads and writes bytes to the 12C registers. For complete instructions
on using the 12C Communication Panel, see the video“03 - BC3770 GUI I2C Communication Video” in the FRDM-BC3770-EVB Product
Summary page.
Figure 11. GUI startup screen
Function
Tabs
Function
Tab Display
USB
Connection
Panel
Direct 12C
Communication
Panel
Session
Log
Panel
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
NXP Semiconductors 17
Installing the software and setting up the hardware
5.3.2 The control registers screen
Figure 12 shows the Control Register screen. The parameter control panel on the left manipulates system VBUS and charger control
parameters. It also controls events related to the MC32BC3770’s three interrupt registers. Finally, the panel at the bottom left provides a
snapshot of the MC32BC3770 status registers. For instructions on using the Control Register Panel, see the video “04 - BC3770 GUI
Control Registers Video” in the FRDM-BC3770-EVB Product Summary page.
The real-time system performance measurements panel on the right controls load sharing, battery supplement, and OTG boost functions
in real-time. Clicking on the Read System button at the bottom right updates the panel. If the Poll System check box is set, the panel
automatically updates on a periodic basis.
For a tutorial on using the Control Registers screen to support load sharing, see the video “08A - BC3770 GUI Load Sharing Video” in the
FRDM-BC3770-EVB Product Summary page.
For a tutorial on using the Control Registers screen to battery supplement, see the video “08B - BC3770 GUI Battery Supplement Video”
in the FRDM-BC3770-EVB Product Summary page.
For a tutorial on using the Control Registers screen to support OTG boost, see the video “08C - BC3770 GUI OTG Boost video” in the
FRDM-BC3770-EVB Product Summary page.
Figure 12. Control register screen
Status
Parameter
Controls
Real-Time
Measurement
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
18 NXP Semiconductors
Installing the software and setting up the hardware
5.3.3 Script editor screen
The Script Editor tab loads and runs scripts automating the execution of Charger Control Panel commands. Figure 13 shows the Script
Editor screen.
The panel on the left is the script editor window. Enter commands directly into this window from the keyboard, or click on the Commands
button at the bottom of the window. Doing so opens a panel to select commands and enter values for their associated variables. These
commands automatically load into the editor in the sequence they were selected. Other buttons below this panel load, save, run, and clear
the script. The Insert Line Separator button enters a full line of dashes at the cursor location in the Script Editor.
The panel on the right shows a log of events occurring as the script executes. Buttons below this panel clears or saves the log. For
complete instructions on using the Script Editor panel, see the video “05 - BC3770 GUI Script Editor Video” in the FRDM-BC3770-EVB
Product Summary page.
Figure 13. Script editor screen
Script Editor
Window
Script Execution
Log
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
NXP Semiconductors 19
Installing the software and setting up the hardware
5.3.4 Charge plot screen
The Charge Plot tab graphs voltage and current in real-time as the battery charges. Save the resulting plot data as an Excel file. Figure 14
shows the Charge Plot screen during a battery charging session. The panel on the upper left displays a log of events occurring during the
charging session. Clear or save the log by clicking the corresponding buttons below the log. The Charge Parameters panel controls the
current and voltage related to the battery charging session. The Plot Parameters panel controls the appearance of the graph. The Charge
State panel shows the current status of the charging session. It also starts, stops, clears, and saves the results of a battery charging
session.
For complete instructions on using the Charge Plot panel, see the video “06 - BC3770 GUI Charge Plots Video” in the FRDM-BC3770-EVB
Product Summary page.
Figure 14. Charge plot screen
Charge
Parameters
Session
Log
Plot
Parameters
Charge
State
Real-time
Plot
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5.3.5 The discharge plot screen
The Discharge Plot tab graphs voltage and current in real-time as the battery discharges. Save the resulting plot data as an Excel file.
Figure 15 shows the Discharge Plot screen during a battery charging session. The panel on the upper left displays a log of events
occurring during the charging session. Clear or save the log by clicking the corresponding buttons below the log. The Discharge
Parameters panel controls the current and voltage related to the battery charging session. The Plot Parameters panel controls the
appearance of the graph. The Discharge State panel shows the current status of the discharging session. It also starts, stops, clears, and
saves the results of a battery charging session.
For complete instructions on using the Discharge Plot panel, see the video “07 - BC3770 GUI Discharge Plots Video” in the
FRDM-BC3770-EVB Product Summary page.
Figure 15. Discharge plot screen
Discharge
Parameters
Session
Log
Plot
Parameters
Discharge
State
Real-time
Plot
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Installing the software and setting up the hardware
5.4 Configuring the hardware
Figure 16 shows the hardware setup using the FRDM-BC3770-EVB and the FRDM-KL25Z boards. For a tutorial on setting up the
FRDM-BC3770-EVB/FRDM-KL25Z platform, see the video “01B - BC3770 Battery Connections Video” in the FRDM-BC3770-EVB
Product Summary page.
Figure 16. FRDM-BC3770-EVM hardware configuration
FRDM-KL25Z
FRDM-BC3770EVB
+
Lithium Ion
Battery
Mini-USB Cable
(Communication)
Mini-USB Cable
(Power)
-
FRDM-BC3770-EVB
FRDM-KL25Z
FRDM-BC3770-EVM
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5.4.1 Step-by-step instructions for setting up the hardware
To perform the demonstration examples, the following connections and setup must be performed:
1. Mount the FRDM-BC3770-EVB board firmly to the Arduino connectors on the FRDM-KL25Z board. (If purchasing the
FRDM-BC3770-EVM kit, the boards are already mounted.)
2. Solder a wire lead to each pole of the Lithium Ion battery.
3. Attach the Lithium Ion leads to the two-pole terminal block (J8) on FRDM-BC3770-EVB. The negative lead goes to the inboard
connector. The positive lead goes to the outboard connector.
4. Connect the FRDM-BC3770-EVB board to a power supply. There are two methods of making this connection.
• Attach a USB mini-cable between the PC and the USB mini-plug connector on the FRDM-BC3770-EVB board. This draws
power from the PC via the USB port. However, because of the USB power supply is relatively low, the battery charges
more slowly.
• Cut the Standard-A plug off the USB cable. Identify and separate out the USB power lines in the cable. Attached the USB
power lines to a power source (either a power supply or a power adaptor.) Note that the source connected must supply
2.0 A current at 5.0 V. Attach the min-plug end of the cable to the USB port on the FRDM-BC3770-EVB board.
5. Attach a USB mini-cable between the PC and the USB communication port on the FRDM-KL25Z board. This cable serves as the
communication link between the Freedom platform and the PC.
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Using BC3770 components with Processor Expert
6 Using BC3770 components with Processor Expert
6.1 Installing CodeWarrior
This procedure explains how to obtain and install the latest version of CodeWarrior (version 10.6 in this guide).
NOTE
The sample software in this kit requires CodeWarrior 10.6 or newer. The component and some
examples in the component package are intended for Kinetis Design Studio 3.0.0. If CodeWarrior 10.6
and Kinetis Design Studio 3.0.0 are already installed on the system, skip this section.
1. Obtain the latest CodeWarrior installer file from the NXP CodeWarrior website here:
www.nxp.com/webapp/sps/site/homepage.jsp?code=CW_HOME&tid=vanCODEWARRIOR.
2. Run the executable file and follow the instructions.
3. In the Choose Components window, select the Kinetis component and click on Next to complete the installation.
Figure 17. Choose components window
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6.2 Downloading the components and example projects
The examples used in this section are based on a pre-configured CodeWarrior project. To download the project and its associated
components:
1. Go to the NXP website www.npx.com/BC3770-PEXPERT
2. Download the zip file containing components and example projects.
3. Unzip the downloaded file and check to see the folder contains the files listed in Ta ble 7.
Table 7. BC3770 example project and components
Folder name Folder contents
Components Component folder
BC_MC32BC3770_b15xx.PEupd Battery charger BC3770 component
FRDM_BC3770_b15xx.PEupd Freedom board FRDM-BC3770 component
ChannelAllocator_b15xx.PEupd Component for ADC channel allocation
Examples
Battery_Charger_BC3770_Control Folder containing application files used in BCF_KLxxZ_Battery_Charger_BC3770_Control_Usb_Hid exam-
ple
CodeWarrior_Examples Example project folder for CodeWarrior
BCF_KL25Z_BC3770_GUI_Usb_Hid Example with BC3770_GUI for FRDM-KL25Z
BCF_KLxxZ_Battery_Charger_BC3770
_Control_Usb_Hid
Example showing usage of BC_MC32BC3770 and FRDM_BC3770 methods with
Battery_Charger_BC3770_Control application for FRDM-KL25Z, FRDM-KL26Z and FRDM-KL46Z (where
xx is the MCU)
BCF_KLxxZ_Monitoring_CDC
KDS_Examples Example project folder for Kinetis Design Studio 3.0.0 or newer
BCF_KL25Z_BC3770_GUI_Usb_Hid Example with BC3770_GUI for FRDM-KL25Z
BCF_KL25Z_Battery_Charger_BC3770
_Control_Usb_Hid_IAR
Example showing usage of BC_MC32BC3770 and FRDM_BC3770 methods with
Battery_Charger_BC3770_Control application for FRDM-KL25Z and IAR Embedded Workbench.
BCF_KLxxZ_Battery_Charger_BC3770
_Control_Usb_Hid
Example showing usage of BC_MC32BC3770 and FRDM_BC3770 methods with
Battery_Charger_BC3770_Control application for FRDM-KL25Z, FRDM-KL26Z and FRDM-KL46Z (where
xx is the MCU)
BCF_KLxxZ_Monitoring_CDC Example showing current, voltage and temperature measurement with output to terminal for FRDM-KL25Z,
FRDM-KL26Z and FRDM-KL46Z
Readme.pdf Read me file with installation instructions.
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6.2.1 Import the BC3770 components into the Processor Expert library
1. Launch CodeWarrior by clicking on the CodeWarrior icon (located on the desktop or in Program Files -> NXP CodeWarrior folder.)
When the CodeWarrior IDE opens, go to the menu bar and click Processor Expert -> Import Component(s).
2. In the pop-up window, locate the component file (.PEupd) in the Components and Example Projects folder
BC3770_PEx_SW\Component. Select BC_MC32BC3770_bxxxx.PEupd, FRDM_BC3770_bxxxx.PEupd, and
ChannelAllocator_bxxxx.PEupd files then click Open (see Figure 18).
Figure 18. Import the BC3770 components
3. If the import is successful, the BC3770 and FRDM_BC3770 component appears in Components Library -> SW -> User
Component (see Figure 19). Note that the component ChannelAllocator is hidden and is not accessible to users. This
component is used by the BC3770 components only.
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6.2.2 Importing an example project into the Processor Expert library
The following steps show how to import an example from the downloaded zip file into CodeWarrior.
1. In the CodeWarrior menu bar, click File -> Import… In the pop-up window, select General -> Existing Projects into Workspace
and click Next.
Figure 20. Importing an example file (a)
2. Click Browse and locate the folder where you unzipped the downloaded example files. Find the folder
BC3770_PEx_SW\Examples\CodeWarrior_Examples and select a project to import. (see Figure 21, which shows
BCF_KL25A_Battery_Charger_BC3770_Control_Usb_Hid as the imported project). Then click OK.
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Figure 21. Importing an example file (b)
3. With your project now loaded in the Select root directory box, click on the Copy projects into workspace check box. Then click
Finish. Figure 22 shows the CodeWarrior Projects panel and the Components panel after the project has been successfully
imported.
The project is now in the CodeWarrior workspace where you can build and run it.
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6.3 Creating a new project with Processor Expert and the BC3770
components
If you choose not to use the example projects, the following instructions describe how to create and setup a new project using the BC3770
components. If you do not have the BC3770 components in the Processor Expert Library, please follow steps in Section 6.2.1, Import the
BC3770 components into the Processor Expert library, page 25.
To create a new project do the following:
1. In the CodeWarrior menu bar, select File -> New -> Bareboard Project. When the New Bareboard Project dialog box opens,
enter a project name into the text box and then click Next. (see Figure 23).
Figure 23. Creating an MCU Bare-board Project
2. In the Devices dialog box, select the MCU class for the appropriate MCU (In Figure 24, MKL25Z128 has been selected). Then
click Next.
3. In the Connections dialog box, select the type of connection the project uses. (In Figure 24 P&E USB Multilink Universal
[FX]/USB MultiLink has been selected). Then click Next.
My_Project
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Figure 24. Selecting a device and a connection
4. In the Language and Build Tools Options dialog box, select the options for the project. (In Figure 25, the default options are
selected.) Then click Next.
5. In the Rapid Application Development dialog box, make sure the Processor Expert button is selected. Then click Finish
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Figure 25. Selecting the language, build tools, and the rapid application development options
6. Figure 26 shows the CodeWarrior Projects panel and the Components panel after the project has been successfully created.
Before the project can be built and run, add the component (imported in Section 6.2.2, Importing an example project into the Processor
Expert library, page 27) into the project. Section 6.3.1, Adding a BC3770 component into the project, page 34 outlines this procedure.
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6.3.1 Adding a BC3770 component into the project
1. Find the BC3770 component in the Components Library and add it into the project (see Figure 27).
Figure 27. Add the BC3770 component to the project
2. Figure 28 shows the Components panel after the component was added. To view the Component Inspector options, double click
on the BC3770 component in the Components panel.
Figure 28. Select the component
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6.3.2 General component inspector view for the BC3770 components
The Component Inspector view provides a means of accessing and modifying component properties. When CodeWarrior is set to the
Classic view, properties in the Component Inspector are arranged in a collapsible tree-structure. Property names appear in the Name
column. The Values column lists the current value assigned to the property. Values not greyed-out in this column may be modified. The
Details column contains additional information (including error conditions) about the selected property. (If CodeWarrior preferences are
set to the Tab view, properties are arranged differently in the Component Inspector; However, the same definitions apply.)
CodeWarrior provides on-screen help for events, methods, and properties. To view a brief description of a method or an event, hover the
mouse pointer over the respective item in the Components panel. A pop-up with a brief description of the item appears (see Figure 29.)
The same technique applies for component events, methods, and properties in Component Inspector view.
Figure 29. Component on-screen help feature
To view on-line documentation for a component, right click on the component in the Components panel. In the pop-up menu, click Help
on Component (see Figure 30.)
Figure 30. Component on-line help feature
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6.4 BC_MC32BC3770 and FRDM_BC3770 Processor Expert components
FRDM_BC3770 and BC_MC32BC3770 Processor Expert components are software drivers which encapsulate the functionality of the
MC32BC3770CS battery charger device and its companion evaluation board, the FRDM-BC3770-EVB. These components provide an
API layer between the hardware and the user application. The BC3770 components make application development less time consuming
by offering an easy to use interface allowing the user to set options for charging parameters, register settings, measurements, and testing.
The BC_MC32BC3770 component contains MC32BC3770CS battery charger methods allowing the user to set charger modes, interrupts,
and charging parameters. The FRDM_BC3770 component encapsulates all the functionality of the FRDM-BC3770-EVB Freedom board.
It contains methods for current, voltage, and temperature measurement. This component uses Current Sense Amplifiers, enabling current
and voltage sensing on the power supply (VBUS), the battery charger output (VSYS), and the battery (VBAT). FRDM_BC3770 component
methods also offer electronic load settings making it possible to test user applications in real time.
6.4.1 The BC_MC32BC3770 Processor Expert Component
This section summarizes main features of BC_MC32BC3770 component and provides an overview of the properties appearing in the
Component Inspector view. Table 8 lists all of the methods and events related to the component. Figure 31 shows typical Component
Inspector properties for a project using the BC_MC32BC3770 component.
Figure 31. Component inspector view - BC_MC32BC3770
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Component properties are grouped into five main sections: General Settings, I2C Communication, VBUS Control, Charger Control,
and Interrupts.
General Settings encompasses charger mode settings. When the Charger Enabled property is set to No, the battery charger is disabled
and the battery is not charged. However, other circuits and blocks (I2C, AICL, etc.) remain fully functional. If the Charger Enabled property
is set to Yes, the battery charger either charges the battery or maintains constant voltage on the battery, if it is fully charged. In Suspend
mode, PMID output is bypassed to VBUS, meaning the charger does not affect output voltage or current. In Boost (OTG Enabled) mode
the device provides a regulated output voltage to VBUS from the battery. In Shutdown Enabled mode, if there is no valid input source,
the charger remains functional except for the I2C interface, which is turned off to minimize power consumption. Setting the Shutdown
Enabled mode is not effective as long as a valid input source is present.
I2C Communication allows the selection of linked I2C_LDD components which are used for communication with the battery charger.
VBUS Control contains options for settings the Adaptive-Input Current Limit (AICL) feature of the battery charger. This feature is useful
when the current and voltage power supply is limited. Under such circumstances, AICL prevents the power supply from collapsing when
the required input current exceeds the maximum output current of the supply. The battery charger in Start-up mode automatically starts
incrementing the input current limit to either the default or the pre-programmed value until either the input current limit (IIN_LIM) is detected
or the VBUS voltage (VAICL_TH) detects the AICL threshold (see Figure 32). If the input current exceeds the power supply current limit,
the AICL function takes over and lowers the charge current below the programmed value. See the battery charger data sheet for more
information.
Figure 32. Adaptive-input current limit
The Charger Control section contains charging parameter options. Auto Stop controls battery charger behavior after the charging
process is finished. When Auto Stop is enabled, the battery charger turns off and goes into the DONE state when the Topoff timer expires
(i.e. the charging process is finished). Otherwise, the battery charger remains on continuously and stays in Constant Voltage mode after
charging, which means it maintains a certain voltage level on the battery. This section also contains options for current settings in current
settings in Pre-charge, Fast charge, and Top-off mode. Note that you cannot switch between these modes. The battery charger
continually transits from one mode to the next based on the battery voltage. IFast Timeout [h] and Topoff Timeout [min] are safety
timers. If the battery voltage does not reach a certain voltage threshold before the timer expires, charging is suspended and a fault signal
is asserted.
VBUSIN
VAICL_TH
IIN_UM
IIN_UM
VBAT_REG
VBAT
IIN_LIM
ICHG+SYS
OTP-Programmable
Soft Start Clock Period
25 mA
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Battery Regulation [V] sets the voltage maintained on the battery when the battery charger is on (Auto Stop is disabled) and the battery
is fully charged. If the battery charger is off after charging, the battery voltage decreases until it reaches the Weak Battery Threshold [V]
value, at which point an interrupt is asserted. For more information please see the MC32BC3770 battery charger data sheet.
6.4.1.1 BC_MC32BC3770 component API
Tabl e 8 describes all of the public Methods and Events related to the BC_MC32BC3770 component. Component Methods are also listed
in the Components panel, as depicted in Figure 33. Methods and Events marked with green check marks are included when source code
is generated; Methods and Events marked with black crosses are not included (see Figure 33). To change these settings, go to the
Component Inspector panel and select the Methods tab (see Figure 34). Note that some of Methods/Events are always generated
because they are needed for proper functionality.
Figure 33. BC_MC32BC3770 methods in the components panel
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Figure 34. BC_MC32BC3770 generated methods
Table 8. BC_MC32BC3770 methods and events
Methods/events Description
Init
Initializes the device according to the component properties. This method writes data according to the component properties
into registers via I2C. When auto initialization is enabled, this method is called automatically within the PE initialization func-
tion - PE_low_level_init().
ReadRegister
Reads data from a single register defined by RegAddr argument. If the method returns ERR_OK, it doesn't necessarily mean
the reception was successful. The actual state of the reception is detectable by means of events (OnMasterSendComplete
or OnError).
WriteRegister Writes data to a single register defined by RegAddr argument.
ReadBurstData This method reads data from multiple registers via I2C. The first parameter is an address of the first read register. Addresses
of following registers increment automatically, so incoming bytes of data represent the content of consecutive registers.
WriteBurstData
This method writes data to multiple registers via I2C. The first parameter is an address of the first register to be written.
Addresses of following registers increment automatically, so out coming data is written to consecutive registers automati-
cally
SetInterrupt Enables or disables an interrupt. Interrupts can be set either individually or all at once. It is not possible to set, for example,
two interrupts at once.
ClearInterrupt Clears interrupt flags in INT1…3 register. Interrupt flags can be cleared either individually or all at once. It is not possible to
clear, for example, two interrupts.
EnDisComparators This method enables/disables comparators enabled by default. The comparators detect weak battery, supply voltage status,
battery OVP, and discharge limit.
Reset This method resets the device's registers, except INTMASK and STATUS.
SetChargerMode
This method sets Charger mode. The charger can be on or off. When the charger is on, it charges the battery or maintains
constant voltage on the battery. In Suspend mode, the PMID output is bypassed to VBUS, which means the charger does
not influence output voltage and current. In Boost mode, the device provides a regulated output voltage to VBUS from the
battery. In Shutdown mode, if there is not valid input source, the charger is functional except for the I2C interface, which is
turned off to minimize power consumption. The device enters Charge mode when a valid input source is present.
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6.4.1.2 Interrupt handling
If an interrupt from the battery charger occurs, an OnInterrupt event is invoked. (This interrupt handler is located in the Events.c file in
the Sources folder of your project.) When such an interrupt occurs, there are two options. The first is to read the Interrupt registers directly
from Battery charger. The second is to read the interrupt registers from the data structure DeviceData, which is updated prior to the
OnInterrupt event being invoked. The OnInterrupt event is useful when setting a flag to report some event has occurred is needed.
EnDisShutdown
Enables/disables the shutdown pin, which means the device is put in Shutdown mode. In Shutdown mode the I2C interface
is turned off to minimize power consumption. However, this applies only in case of an invalid input power source. This pin is
not effective as long as a valid input power source is present.
SetFastChargeTimer
Fast charge timer watches the device during Fast-charge mode. An interrupt is asserted if the battery voltage does not reach
its required value within this “fast-charge” time frame. Possible values are 3.5, 4.5, and 5.5 hours, or the timer can be dis-
abled.
SetTopOffTimer Top-off timer watches the device during Top-off mode. An interrupt is asserted if the battery voltage does not reach its
required value within this “top-off” time frame. Possible values are: 10, 20, 30, or 45 minutes.
GetStatus This method returns the content of the status register.
SetPreChargeCurrent
Pre-charge current is current charging the battery in pre-charge mode. The battery charger enters Pre-charge mode when
battery voltage is higher than 2.5 V. If the battery voltage does not exceed the VSYS_MIN threshold before the pre-charge
timer expires, charging is suspended and a fault signal is asserted via the INTB pin.
SetFastChargeCurrent
Fast-charge current is current charging the battery in Fast-charge mode. The Fast-charge mode is entered when the battery
voltage exceeds the VSYS_MIN threshold of a typical 3.6 V. If the battery voltage does not reach the VBAT_REG threshold
before the timer expires, charging is suspended and a fault signal is asserted via the INTB pin.
SetTopOffCurrent
Top-off-charge current is current charging the battery in Top-off mode. After the top-off timer expires, the top-off event is
reported to the processor via the INTB pin, which means the battery is fully charged. As soon as the processor reads the
interrupt registers, the processor is able to turn off the charger.
SetDischargeCurrent This method sets the discharge current limit in Discharge mode.
SetBatteryRegulation
Threshold
Based on this threshold, the charger transits from Fast-charge mode (Constant-current mode) to Full-charge mode (Con-
stant-voltage mode). In Full-charge mode, the fast charge current is reduced to a programmable top-off current. Up to this
threshold the VSYS output tracks the battery voltage in Trickle and Pre-charge mode.
SetWeakBattery
Threshold
This method sets the weak battery threshold voltage. The threshold ranges from 3.0 V to 3.75 V in 50 mV steps. A weak bat-
tery detection function allows the processor to acknowledge the low-battery condition by asserting an INTB event.
SetBoostOTGVoltage This method sets OTG voltage in Boost (OTG) mode. In Boost mode the device provides a regulated output voltage to
VBUS from the battery.
EnDisAutostop
This method enables or disables the autostop feature. If autostop is enabled after the top-off timer expires, the charger turns
off and goes into DONE state. If it is disabled, the charger is on continuously and stays in CV mode after the top-off timer is
expires.
EnDisAICL
Enables/disables adaptive-input current limit (AICL). AICL is mostly used at the beginning of the charging process when cur-
rent dissipation is higher than the current the power source can provide. This feature prevents the power source from col-
lapsing.
SetAICLVoltage
Threshold
This method sets AICL threshold voltage on VBUS. To keep the device functional with a current and voltage limited VBUS
source, the device in Start-up mode automatically starts incrementing the input current limit to either the default or pre-pro-
grammed value until either the input current limit is detected or the VBUS voltage detects the AICL threshold. This keeps
input supply voltage as a valid power source to provide the load for the application. The device allows the maximum current
the input supply can possibly provide without severely collapsing.
SetAICLCurrentLimit
This method sets the input current limit by writing to VBUSCTRL register. This value limits the fast-charge current when the
device is in Fast-charge mode. It also sets the limit for the adaptive-input current limit (AICL) when a device in Start-up mode
automatically starts incrementing the input current limit to either the default or pre-programmed value until either the input
current limit is detected or the VBUS voltage detects the AICL threshold. This keeps input supply voltage as a valid power
source to provide the load for the application.
OnInterrupt
Interrupt event handler from battery charger. This event is invoked every time there is a falling edge on the INT interrupt pin.
Contents of the registers in the device structure are updated prior to this event, so the interrupt registers directly from this
structure (without sending I2C command) can be read.
Table 8. BC_MC32BC3770 methods and events
Methods/events Description
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6.4.2 FRDM_BC3770 Processor Expert component
While the BC_MC32BC3770 component provides an interface for the battery charger, the FRDM_BC3770 component covers all the
functionality of the FRDM-BC3770-EVB Freedom board. The FRDM_BC3770 component facilitates user application testing and
evaluation by providing an API for current, voltage, and temperature measurement, and for Electronic load settings.
This section summarizes main features of the FRDM_BC3770 component and provides an overview of the properties appearing in the
Component Inspector view. Tab le 9 lists all of the methods and events related to the component. Figure 35 shows typical Component
Inspector properties for a project using the FRDM_BC3770 component.
Figure 35. FRDM_BC3770 properties
In the Component Inspector view, the FRDM_BC3770 component properties are divided into five sections:
1. I2C Communication provides selection of the linked I2C_LDD component used for communication with the Current Sense
Amplifiers and Electronic load.
2. ELOAD (Electronic load) contains pin settings for the Electronic load’s LDAC and Ready/Busy pins. LDAC is used as a flag for
transferring the contents of the input registers to their corresponding DAC output registers. Ready/Busy pin is a status indicator of
EEPROM programming activity. ELOAD Current sets the amount of current which the electronic load sinks from either battery or
VSYS output.
3. Voltage and Current Measurement enables the Current Sense Amplifiers (CSA) to measure VBUS, VSYS, and VBAT voltage
and current.
4. NTC Thermistor contains settings for temperature measurement. The ADC Link property links ADC_LDD component to the
FRDM_BC3770. The NTC A/B/C/D properties are coefficients of the Steinhart-Hart equation used as an approximation for
temperature calculation from voltage measured on NTC thermistor. Find these coefficients in the data sheet for the NTC
thermistor. Note: make sure the number format of coefficients in the data sheet corresponds to the format in component
properties. For example, if the first coefficient NTC A is given as 0.5E-04 (or 0.5x10-4), convert it to 0.05E-3 and enter only the
significant part of the number (i.e. 0.05). Otherwise the calculated value cannot correspond to the real temperature. The NTC
reference value is thermistor resistance at 25 °C.
5. Additional Pins offers pin settings for the green and red LEDs, which can be used as an indicator of some event in the user
application.
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
42 NXP Semiconductors
Using BC3770 components with Processor Expert
6.4.2.1 I2C configuration
The FRDM_BC3770 component requires two different I2C_LDD components — one for FRDM_BC3770 and the other for
BC_MC32BC3770. This is because there are two I2C interfaces used on the Freedom evaluation board. One interface is used for
communication with the battery charger and the other handles communication with current sense amplifiers and electronic load. If the
project is not configured with two different I2C_LDD components, the Processor Expert reports an error.
Figure 36. FRDM_BC3770 components panel with two I2C components
I
2
C Components
Freedom Board Component
BC3770 Component
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
NXP Semiconductors 43
Using BC3770 components with Processor Expert
6.4.2.2 FRDM_BC3770 component API
Table 9 describes all of the public methods and events related to the FRDM_BC3770 component. Component methods are also listed in
the Components panel as depicted in Figure 36. Methods and events marked with green check marks are included when source code is
generated; Methods and events marked with black crosses are not included (see Figure 36). To change these settings, go to the
Component Inspector panel and select the Methods tab. Note that some of methods/events are always generated, because they are
needed for proper functionality.
Table 9. BC_MC32BC3770 methods and events
Methods/events Description
FreedomBoard_Init Initializes devices on the board (current sense amplifiers and electronic load) assigns user defined data structure describing
the board.
SelectDevice This method selects one of the devices on the board: electronic load or some of the current sense amplifiers to measure cur-
rent or voltage.
GetSelectedDevice This method returns last selected device.
ELO_Init This method initializes electronic load (ELOAD). Device MPC4728 is initialized with default values. Outputs B, C, and D are
in Power-down mode. Only output A, used for ELOAD control, is in Normal mode.
ELO_SetCurrent
This method sets the ELOAD set point (the amount of current ELOAD sinks). This method is the same as the internal
ELO_SetPointEload except for the function parameter, which is a real number [mA]. This method sends command 'new
value' to the output register of channel A. Resolution of output voltage is 12 bits. Command 'send new value' sets default set-
tings for other registers.
CSA_Init Initializes the device and sets the default configuration (see documentation of INA230) of VBUS, VSYS, BATTERY amplifier
and settings of calibration register.
CSA_GetCurrent This method reads the content of the Current Register for the selected device and converts it to current in milliamperes [mA].
To change the selected device, use the CSA_SelectDevice method.
CSA_GetVoltage This method reads the Bus Voltage or Shunt Voltage register of the selected device according to the first parameter. The
value of the register is converted to voltage in millivolts [mV].
CSA_ReadRegister Reads the content of the selected Current Sense Amplifier register.
CSA_WriteRegister Writes value to the selected Current Sense Amplifier register.
NTC_GetTemperature
This method measures the voltage on NTC thermistor and calculates temperature according to the Steinhart-Hart equation.
Returned temperature is in Kelvin scale - T[K]. The precision of the resulting temperature depends on the NTC constants of
the equation. Add the correct constants A, B, C, D from data sheet of your NTC thermistor.
SetLED This method turns on/off the green or red LED.
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
44 NXP Semiconductors
Using BC3770 components with Processor Expert
6.5 Generating driver source code
After you have completed configuring the components, the application is ready to generate the driver code to be incorporated. The process
is as follows:
1. Click on the Generate Processor Expert Code icon in the upper right corner of the Components panel.
Figure 37. Generating the source code
2. The driver code for the device is generated into the Generated_Code folder in the Project panel. The component only generates
the driver code. It does not generate application code. Figure 38 shows the locations of the generated driver source code, Events
source code, and the appropriate location for user application code.
Figure 38. Source code locations
Driver code is
generated here
Events are
generated here
Application source
code belongs here
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
NXP Semiconductors 45
Using BC3770 components with Processor Expert
6.6 Developing application code in Processor Expert
Processor Expert allows you to write application code, add component methods, and build your application without leaving the
CodeWarrior environment.
6.6.1 Writing the application code
All of the application code must reside in the Sources folder in the project directory. The code may modified in main.c and Events.c, but
retain the original comments related to usage directions.
6.6.2 Adding component methods
To add a component method into the application source code:
1. In the Components panel for the project, click on Components. Find the desired method to add to the code.
2. Drag and drop the method directly into the source code panel.
3. Add the appropriate parameters to the method. (Hovering the mouse over the method displays a a list of the required parameters.)
Figure 39 shows an example of how to add a component method into the application source code. The example uses the MVHBridge
component. The process is the same for adding a BC3770 component method.
In the example, the MVHBridge component method list is opened, the RotateProportional method is dragged and dropped into main.c
and the necessary parameters are added.
Figure 39. Adding component methods
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
46 NXP Semiconductors
Using BC3770 components with Processor Expert
6.6.3 Jumping into function source code
CodeWarrior is based on the Eclipse IDE allowing jumps directly into the source code of a function from within the main routine while
editing. To do so, CTRL and click. The source code appears in the edit window.
Figure 40. Jumping into a function’s source code
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
NXP Semiconductors 47
Using BC3770 components with Processor Expert
6.6.4 Building the project
To build the project, click on the hammer icon in the tool bar (see Figure 41). Alternatively, initiate a build by entering CTRL + B from the
keyboard.
Figure 41. Compiling and downloading the application
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
48 NXP Semiconductors
Schematics
7 Schematics
7.1 Charger
Figure 42. BC3770 charger
Route sense line with trace
to from U1.B3 to J6.2.
DO NOT CONNECT TO PLANE!!!
CHG_OUT_SM5418
SCL1
SDA1
nSHDN
nCHGEN
nINT
VDDIO
CHG_OUT
BAT_SNS
VBUS_IN
BATREG
NOBAT
0
0
PGND
PGND PGND
PGND PGND
PGND
PGND
PGND
PGND
0
3V3
PGND
VSYS
CHG_OUT
BATREG
BAT_SNS
NOBAT
nINT
SDA1
SCL1
nCHGEN
nSHDN
VBUS_IN
J11
M20-9990245
12
C6
DNP
0.1UF
VL
PGND1
nSHDN
nCHGEN
1803439
1
2
3
R7
2.4K
VBAT
R2
1.5K
R5
10k
MC32BC3770CS
U1
BAT_REG C4
BATSNSN B3
BOOT B2
CHGEN
D2
CHGOUT_C5 C5
CHGOUT_D5 D5
CHGOUT_E5 E5
GND
C3
INT
B5
LX_C1 C1
LX_D1 D1
NOBAT C2
PGND_E1 E1
PGND_E2 E2
PMID B1
SHDN
D3
SCL
A4
SDA
A5
VBUS_A1
A1
VBUS_A2
A2
VIO
B4
VL
A3
VSYS_D4 D4
VSYS_E3 E3
VSYS_E4 E4
nINT
L1
1uH
12
C25
1.0UF
BOOT
C8
10UF
VBUS
LX
J5
M20-9990245
12
J7
M20-9990245
12
R3
10k
SCL1
VSYS
R6
0
C1
1.0UF
C2
2.2UF
R1
1.5K
J12
M20-9990245
12
R4
10k
C7
0.1UF
C4
2.2UF
SDA1
J6
1
2
3
C3
0.022UF
PMID
J4
M20-9990245
12
C5
4.7uF
PGND2 PGND3
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
50 NXP Semiconductors
Schematics
7.3 VBUS current sense amplifier (CSA)
Figure 44. VBUS current sense amplifier (CSA)
VBUS_PORT
VBUS_IN
0
0
3V3
VBUS_IN
VBUS_PORT
SCL2
SDA2
VBUS_CSA_ALERT
U20
INA230
A0
2
A1
1ALERT 3
GND
10
SCL
5
SDA 4
BUS
11
IN-
12
IN+
13
VS 9
NC_6 6
NC_7 7
NC_8 8
NC_14 14
NC_15 15
NC_16 16
E_PAD
17
R20
0.010
3
4
1
2
VBUS_ALERTR24
10k
12C ADDR: 0x80
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
NXP Semiconductors 51
Schematics
7.4 VSYS current sense amplifier
Figure 45. VSYS current sense amplifier
SCL2
SDA2
VSYS
0
3V3
3V3
0
VSYS
SYS_LOAD
VSYS_CSA_ALERT
R33
10k
VSYS_ALERT
R23
0.010
3
4
1
2
U24
INA230
A0
2
A1
1ALERT 3
GND
10
SCL
5
SDA 4
BUS
11
IN-
12
IN+
13
VS 9
NC_6 6
NC_7 7
NC_8 8
NC_14 14
NC_15 15
NC_16 16
E_PAD
17
12C ADDR: 0x82
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
52 NXP Semiconductors
Schematics
7.5 VBAT current sense amplifier
Figure 46. VBAT current sense amplifier
SDA2
SCL2
SDA2BATREG
0
3V3
0
BATREG
VBAT_CSA_ALERT
CHG_OUT
R26
0.010
3
4
1
2
U22
INA230
A0
2
A1
1ALERT 3
GND
10
SCL
5
SDA 4
BUS
11
IN-
12
IN+
13
VS 9
NC_6 6
NC_7 7
NC_8 8
NC_14 14
NC_15 15
NC_16 16
E_PAD
17
VBAT_ALERT
R28
10k
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
NXP Semiconductors 53
Schematics
7.6 Electronic load (ELOAD)
Figure 47. Electronic load (ELOAD)
ELOAD
ELOAD_DAC
CHG_OUT
SYS_LOAD
SCL2
SDA2
nLDAC
RDY/BSY
0
0
0
0
0
3V3
3V3
3V3
SYS_LOAD
SCL2
SDA2
nLDAC
RDY/BSY
CHG_OUT
R36
1.80K
TP2
Q20
SI4156DY
2
7
48
5
3
6
1
C24
0.1UF
C23
10UF
TP1
R25
15.0K
C20
0.1UF
+
-
VDD
VSS
U21A
MCP6V07
3
2
1
8 4
U23
MCP4728
VDD 1
SCL
2
SDA
3
LDAC
4
VOUTA 6
VOUTC 8
VOUTB 7
VSS
10
VOUTD 9
RDY/BSY
5
R27
1K
RDY/BSY
ELOAD_DAC
J20
HDR 1X3
1
2
3
R30
1.5K
LDAC
R21
1.0
R29
1.5K
J21
M20-9990245
12020
1K
SCL2 C22
10UF
C21
0.1UF
SDA2
TP3
12C ADDR: 0xC0
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
56 NXP Semiconductors
Schematics
7.9 Board ID
Figure 50. Board ID
7.10 LED indicators
Figure 51. LED indicators
MC32BC3770
RESERVED
0.5V 1.8K 1%
1.0V
1.5V
2.0V
4.7K 1%
8.45K 1%
15.4K 1%
RESERVED
RESERVED
BOARD_ID
0
3V3
BOARD_ID
R37
4.7K
+
-
U25B
MCP6V07
5
6
7
R34
10k
Green Red
LED_G
LED_R
3V3
LED_G
LED_R
LED1
LG L29K-F2J1-24
AC
R32
220
12
R31
220
12
LED2
LS L29K-G1J2-1-Z
AC
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
60 NXP Semiconductors
Board bill of materials
9 Board bill of materials
Table 10. Bill of materials (1)
Item Qty Schematic label Value Description Part number Assy
opt
NXP Components
11U1 IC PROGM SWT CHARGER 1.5 MHz W/DUAL
OUT 5–5.2 V WLCSP25 MC32BC3770CS
Active components
2 3 U20, U22, U24 IC CURRENT SHUNT MONI-
TOR 2.7–5.5 V QFN16 - Texas Instruments INA230AIRGTT
31U23 IC DAC QUAD 12BIT 2.7–5.5 V MSOP10 -
Microchip Technology Inc MCP4728-E/UN
4 2 U21, U25 IC LIN OPAMP DUAL AUTO-ZERO 1.8–5.5
V SOIC8 - Microchip Technology Inc MCP6V07-E/SN
Capacitors
5 2 C1, C25 1.0 μFCAPACITOR CER 1.0 UF 10 V 10% X5R 0805 -
TDK C2012X5R1A105K
6 2 C2, C4 2.2 μFCAPACITOR CER 2.2 uF 25 V 10% X7R 0805 -
AVX 08053C225KAT2A
7 1 C3 0.022 μFCAPACITOR CER 0.022 UF 16 V 20% X7R 0805
- AVX 0805YC223MAT2A
8 1 C5 4.7 μFCAPACITOR CER 4.7 UF 16 V 10% X7R 0805 -
Kemet C0805C475K4RACTU
9 1 C6 0.1 μFCAPACITOR CER 0.1 UF 25 V 10% X7R 0805 -
Murata GRM21BR71E104KA01L (2)
10 4 C7, C20, C21, C24 0.1 μFCAPACITOR CER 0.1 UF 25 V 10% X7R 0805 -
Murata GRM21BR71E104KA01L
11 3 C8, C22, C23 10 μFCAPACITOR CER 10 UF 16 V 10% X5R 0805 -
AVX 0805YD106KAT2A
Inductors
12 1 L1 1.0 μHINDUCTOR PWR 1 uH@1MHZ 2.2 A 20% 2520 -
SAMSUNG CIG22E1R0MNE
Resistors
13 2 020, R27 1.0 K RESISTOR MF 1 K 1/8 W 5% 0805 - YAGEO
AMERICA RC0805JR-071KL
14 4 R1, R2, R29, R30 1.5 K RESISTOR MF 1.5 K 1/8 W 5% 0805 - KOA
SPEER RK73B2ATTD152J
15 8 R3, R4, R5, R24, R28, R33,
R34, R35 10.0 K RESISTOR MF 10.0 K 1/8 W 0.1% 0805 -
BOURNS CRT0805-BY-1002ELF
16 1 R6 0 ΩRESISTOR MF ZERO OHM 1/8W -- 0805 -
YAGEO AMERICA RC0805JR-070RL
17 1 R7 2.4 K RESISTOR MF 2.4 K 1/8 W 1% 0805 - YAGEO
AMERICA 232273462402L
18 3 R20, R23, R26 0.01 ΩRESISTOR METAL STRIP 0.01 OHM 1 W 1%
2512 - VISHAY INTERTECHNOLOGY WSK2512R0100FEA
19 1 R21 1.0 ΩRESISTOR WW 1.0 OHM 3.0 W 5% SMT - OHM-
ITE MANUFACTURING RW3R0DB1R00JET
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
NXP Semiconductors 61
Board bill of materials
20 1 R25 15.0 K RESISTOR MF 15.0 K 1/8 W 1% 0805 - KOA
SPEER RK73H2ATTD1502F
21 2 R31, R32 220 ΩRESISTOR MF 220 OHM 1/8 W 5% 0805 - VEN-
KEL COMPANY CR0805-8W-221JT
22 1 R36 1.8 K RESISTOR MF 1.80 K 1/8 W 1% 0805 - BOURNS CR0805-FX-1801ELF
23 1 R37 4.7 K RESISTOR MF 4.70 K 1/8 W 1% 0805 - BOURNS CR0805-FX-4701ELF
Switches, connectors, jumpers and test points
24 2 J1, J9 HDR 2x8 2.54 MM FEMALE (STACKABLE) -
SAMTEC SSQ-108-23-G-D
25 1 J2 HDR 2x10 2.54 MM FEMALE (STACKABLE) -
SAMTEC SSQ-110-23-G-D
26 1 J3 CON 1x5 USB MINI-B RA SHLD SKT SMT 0.8
MM SP 156HAU -- HIROSE UX60-MB-5ST
27 6 J4, J5, J7, J11, J12, J21 HDR 1x2 TH 100 MIL SP 339H AU 118L - HAR-
WIN INC M20-9990245
28 1 J6
CON 1X3 TB TH 3.81 MM SP 201H -- 138L +
TERM BLOCK PLUG 3.81 MM 3POS - SUBAS-
SEMBLY
210-80099, 211-79220
29 1 J8
CON 1X2 TB TH 3.81 MM SP 201H -- 138L +
TERM BLOCK PLUG 3.81 MM 2POS - SUBAS-
SEMBLY
210-8009, 210-80098 (2)
30 1 J10 CON 2X10 SKT TH 2.54 MM CTR 340H AU 394L
- SAMTEC SSQ-106-23-G-D
31 1 J20 HDR 1x3 TH 100 MIL SP 340H AU 118L - HAR-
WIN INC M20-9990345
32 J6_1 CON 1X3 TB TH 150 MIL SP 363H SN 134L -
Phoenix Contact 1803439
33 J8_1 CON 1X2 TB TH 150 MIL SP 363H SN 134L -
Phoenix Contact 1803426
34 1 LED1 LED GRN SGL 20 MA 0603 NRND - OSRAM LG L29K-F2J1-24-Z
35 1 LED2 LED RED SGL 30 MA 0603 - OSRAM LS L29K-G1J2-1-Z
36 1 Q20 TRANS NMOS PWR 24 A 30 V SO8 - Vishay
Technology SI4156DY-T1-GE3
37 21
BOOT, ELOAD_DAC, LDAC,
LX, NCHGEN, NINT,
NSHDN, NTC_TEMP, PMID,
RDY/BSY, SCL1, SCL2,
SDA1, SDA2, VBAT,
VBAT_ALERT, VBUS,
VBUS_ALERT, VL, VSYS,
VSYS_ALERT
TEST POINT RED 40 MIL DRILL 180 MIL TH -
KEYSTONE ELECTRONICS 5000 (2)
38 3 PGND1, PGND2, PGND3 TEST POINT BLACK 40 MIL DRILL 180 MIL TH -
KEYSTONE ELECTRONICS 5001 (2)
Notes
1. NXP does not assume liability, endorse, or warrant components from external manufacturers are referenced in circuit drawings or tables. While
NXP offers component recommendations in this configuration, it is the customer’s responsibility to validate their application.
2. Do Not Populate
Table 10. Bill of materials (1) (continued)
Item Qty Schematic label Value Description Part number Assy
opt
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
62 NXP Semiconductors
References
10 References
Following are URLs where you can obtain information on related NXP products and application solutions:
Table 11. References
NXP.com support pages Description URL
FRDM-BC3770-EVB Tool Summary Page http://www.nxp.com/webapp/sps/site/prod_summary.jsp?code=FRDM-BC3770-EVB
MC32BC3770 Product Summary Page http://www.nxp.com/webapp/sps/site/prod_summary.jsp?code=BC3770
FRDM-KL25Z Product Summary Page http://www.nxp.com/webapp/sps/site/prod_summary.jsp?code=FRDM-KL25Z
CodeWarrior Tool Summary Page http://www.nxp.com/webapp/sps/site/homepage.jsp?code=CW_HOME&tid=vanCODEWAR
RIOR
Processor Expert Code
Model Code Walkthrough Video http://www.nxp.com/video/processor-expert-code-model-codewarrior-code-walkthrough:PR
OEXPCODMODCW_VID
NXP.com videos Description URL
FRDMKL25ZINTRO_VID Freedom Introduction
Video http://www.nxp.com/webapp/video_vault/videoSummary.sp?code=FRDMKL25ZINTRO_VID
FRDM-BC3770-EVB Quick
Startup Startup Instructions http://www.nxp.com/webapp/sps/site/prod_summary.jsp?code=FRDM-BC3770-EVB
USB Connection Panel Configuring USB Con-
nections http://www.nxp.com/webapp/sps/site/prod_summary.jsp?code=FRDM-BC3770-EVB
Direct 12C Communication
Panel
Configuring Direct 12C
Communications http://www.nxp.com/webapp/sps/site/prod_summary.jsp?code=FRDM-BC3770-EVB
Control Registers Panel Configuring Control Reg-
isters http://www.nxp.com/webapp/sps/site/prod_summary.jsp?code=FRDM-BC3770-EVB
Script Editor Panel Editing and running
scripts http://www.nxp.com/webapp/sps/site/prod_summary.jsp?code=FRDM-BC3770-EVB
Charge Plots Monitoring battery charg-
ing http://www.nxp.com/webapp/sps/site/prod_summary.jsp?code=FRDM-BC3770-EVB
Discharge Plots Monitoring Discharge
Plots http://www.nxp.com/webapp/sps/site/prod_summary.jsp?code=FRDM-BC3770-EVB
Load Sharing Describes the load shar-
ing support via the GUI http://www.nxp.com/webapp/sps/site/prod_summary.jsp?code=FRDM-BC3770-EVB
Battery Supplement Describes battery supple-
ment support via the GUI http://www.nxp.com/webapp/sps/site/prod_summary.jsp?code=FRDM-BC3770-EVB
OTG Boost Describes OTG Boost
support via the GUI http://www.nxp.com/webapp/sps/site/prod_summary.jsp?code=FRDM-BC3770-EVB
Freedom expansion boards FRDM-BC3770-EVB and FRDM-BC3770-EVM, Rev. 2.0
64 NXP Semiconductors
Revision history
11 Revision history
Revision Date Description of changes
1.0 03/2015 • Initial Release
2.0
12/2015 • Added Processor Expert Section
12/2015 • Corrected copyright information
7/2016 • Updated to NXP document form and style
Information in this document is provided solely to enable system and software implementers to use NXP products. There
are no expressed or implied copyright licenses granted hereunder to design or fabricate any integrated circuits based on
the information in this document. NXP reserves the right to make changes without further notice to any products herein.
NXP makes no warranty, representation, or guarantee regarding the suitability of its products for any particular purpose,
nor does NXP assume any liability arising out of the application or use of any product or circuit, and specifically disclaims
any and all liability, including without limitation, consequential or incidental damages. "Typical" parameters that may be
provided in NXP data sheets and/or specifications can and do vary in different applications, and actual performance may
vary over time. All operating parameters, including "typicals," must be validated for each customer application by the
customer's technical experts. NXP does not convey any license under its patent rights nor the rights of others. NXP sells
products pursuant to standard terms and conditions of sale, which can be found at the following address:
http://www.nxp.com/terms-of-use.html.
NXP, the NXP logo, Freescale, the Freescale logo, and SMARTMOS are trademarks of NXP B.V. All other product or
service names are the property of their respective owners. All rights reserved.
© 2016 NXP B.V.
How to Reach Us:
Home Page:
NXP.com
Web Support:
http://www.nxp.com/support
Document Number: KTFRDMBC3770UG
Rev. 2.0
8/2016
