APR3101-EBI-TR - Anpec Electronics Corp.

MicroPower Microprocessor Reset Circuit with Manual Reset

Rev. A.3 - Feb., 2004

APR3101/2/3

www.anpec.com.tw1

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise

customers to obtain the latest version of relevant information to verify before placing orders.

Features General Description

Applications

••

• 1.2V to 6V Input Voltage Range

••

• Low Quiescent Current : less Than 1.5 µA

••

• High accuracy detection threshold : ±1.5%

••

• Fixed trimmed reset thresholds for 1.5V, 1.75V,

2.32V, 2.63V, 2.93V, 3.08V, 3.9V, 4.38V.

••

• Manual Reset Input

••

• Reset Timeout Period 250ms

••

• Available output configurations

- Open-drain output

- CMOS active high output

- CMOS active low output

••

• SOT-23-5 package

••

• No external components

Pin Configuration

The APR3101/2/3 are designed to monitor voltage

supplies in µP and digital systems. The quiescent

current is extremely low, typically 1.5 µA, making it

ideal for portable battery operated equipment. The

APR3101/2/3 operate by monitoring the system power

supply voltage. When the input voltage drops below a

fixed threshold or whenever manual reset is asserted,

the device asserts a reset signal for a fixed time pe-

riod after Vcc rises above the fixed threshold or manual

reset is deasserted. The APR3101/2/3 series is avail-

able with three output stage versions:APR3101 push-

pull active low output, APR3102 push-pull active high

output and APR3103 open drain active low output. The

APR3101/2/3 also have a debounced manual reset

input that is provided to override the reset monitor.

They are also designed to reject fast line transient

glitches on Vcc. The APR3101/2/3 are come in a

miniature SOT-23-5 package.

NCGND

MRVCC

123

(3101/3)

(3102)

Reset

SOT-23-5 (Top View)

•Computers

•Cell Phones

•Portable Electronics

•µP Power Supply Monitoring

Rev. A.3 - Feb., 2004

APR3101/2/3

www.anpec.com.tw2

Ordering and Marking Information

Pac kage Code

B : SOT-23-5

Temp. Range

I : -40 to 85 C

Handling Code

TR : Tape & Reel

Voltage Code :

15 : 1.5V ~ 50 : 5.0V

Lead Free Code

L : Lead Free Device Blank : Original Device

APR 3 101 /2/3 -

Handling Code

Temp. Range

Pac kage Code

Voltage Code

Date Code

X X

Voltage Code

A1/2/3

AP R3101/2/3 B :

A:1.5V B :1.75V C:2.32V D:2.63V E:2.93V F:3.08V G :3.9V H:4.38V

Lead Free Code

Absolute Maximum Ratings

Symbol Parameter Value Unit

VCC V

CC to GND -0.3 to 6 V

RESET to GND (Push-Pull Output) -0.3 to VCC +0.3

VRESET RESET to GND (Open Drain Output) -0.3 to 6 V

ICC, IMR Maximum Continuous Input Current 20 mA

IRESET RESET/RESET Current 20 mA

dVcc/dt Rate of Rise of VCC 100

V/µs

TJ Junction Temperature Range -40 to 150 °C

TL Lead Temperature (Soldering, 10 second) 260 °C

RTH,JA Thermal Resistance – Junction to Ambient 357 °C/W

PD Power Dissipation Internally Limited W

TSTG Storage Temperature Range -65 to +150 °C

Pin Function Descrpition

No. Name Description

1 GND Ground connection

2 NC No internal connection

RESET

(APR3101/3) RESET output remains low while VCC is below the reset threshold and remains

so for a fixed time period after VCC raises above the reset threshold.

3 RESET

(APR3102) RESET output remains high while VCC is below the reset threshold and remains

so for a fixed time period after VCC raises above the reset threshold.

4 MR

Manual Reset active low input. A logic low signal on MR asserts a reset

condition. Asserted reset continues as long as MR is low and for a fixed time

period after MR returns high.

5 VCC Supply Voltage (+1.2V to +6V)

Note: The pin sequence here might not be correct for all different package types, and please refer pin

configuration in page1 for correct pin assignment.

°°

Rev. A.3 - Feb., 2004

APR3101/2/3

www.anpec.com.tw3

Block Diagram

Vc c

GND

VREF

Reset

Generator

+ Timer

Oscillator

RESET

APR3102

Vc c

GND

VREF

Reset

Generator

+ Timer

Oscillator

RESET

APR3101

Vc c

GND

VREF

Reset

Generator

+ Timer

Oscillator

RESET

APR3103

Rev. A.3 - Feb., 2004

APR3101/2/3

www.anpec.com.tw4

Part Number Part Description

APR 31 01 Reset Output Push Pull Active Low w ith De la y

APR 3102 Reset Output Pu sh Pull Active High w ith Delay

APR 3103 Reset Output Open Drain Active Low with Delay

APR3101/2/3

Symbol Parameter Test Conditions Min. Typ. Max.

Unit

VCC Supply Voltage 1.2 6

ICC Supply Current VCC=1.5V~6V 1.5 4

µA

A=-40 to 85°C 3 5

T A=25°C ±1.5%

VTH Reset Threshold T A=-40 to 85°C ±2%

VHYST Hysteresis Range 20 mV

TRTP Reset Timeout Period 150 250 350

VOL Reset Output Low ISINK=1.2mA 0.5 V

VOH Reset Output High ISOURCE=0.6mA 0.8*VCC

TD VCC to Reset Delay VCC=VTH to (VTH-100mV) 25

µS

ILE Reset Output Leakage 0.5 µA

TMPW MR Minimum Pulse Width 10 µS

TMRD MR to Reset Delay 0.5 µS

VMIL MR Input Low Threshold 0.4* VCC V

VMIH MR Input High Threshold 0.5* VCC

RMR MR Pull-Up resistance 30 47 70

KΩ

Application Circuit

VCC VCC

GND

100k

APR3103 RESET RESET

INPUT µP

VCC

GND

Part Number Description

Electrical Characteristics

VIN = 5V, TA = -40 to 85°C unless otherwise noted. T ypical values are at TA=25°C, VCC = 5V for 4.38V

versions, VCC = 3.3V for 3.08/2.93V versions, VCC = 3.0V for 2.63V. versions and VCC = 2.5V for 2.32V

versions, VCC = 2.0V for 1.75V versions , VCC = 1.8V for 1.5V versions.

VCC VCC

GND

RESET

(RESET) RESET

INPUT µP

VCC

GND

APR3101

APR3102

Rev. A.3 - Feb., 2004

APR3101/2/3

www.anpec.com.tw5

Vcc

RESET

Res et Tim eout P eriod 250ms

M R to Res et Delay 0.5us

V c c t o Res et Delay 25us

Res et Threshold Res et Threshold

Res et Tim eout P eriod 250ms

RESET

(APR3102)

(APR3101/3)

Timing Chart

Rev. A.3 - Feb., 2004

APR3101/2/3

www.anpec.com.tw6

0123456

Vcc=2.9V

Vcc=2V

Vcc=2.5V

Vcc=1.5

0123456

Vcc=4V

Vcc=3V

Vcc=5V

0.4

0.8

1.2

1.6

0123456 0

100

120

10 100 1000

Typical Characteristics

Supply Current vs. Supply V oltage

Supply Current (uA)

Supply Voltage (V)

Maximum T ransient Duration vs.

Reset Threshold Overdrive VTH - VCC

Reset Threshold Overdrive VTH - VCC (mV)

Maximum T ransient Duration (us)

Output Source Current vs. Reset High Output Voltage

Reset High Output V oltage (V)

Output Source Current (mA)

Output Sink Current vs. Reset Low Output V oltage

Reset Low Output V oltage (V)

Output Sink Current (mA)

generate a reset signal

never generate a reset signal

Rev. A.3 - Feb., 2004

APR3101/2/3

www.anpec.com.tw7

0.5

1.5

2.5

3.5

-40-200 20406080100120

Vcc=3V

Vcc=5V

100

200

300

400

500

600

-40-200 20406080100120

0.994

0.996

0.998

1.002

1.004

1.006

1.008

-40 -20 0 20 40 60 80 100 120 0

-40 -20 0 20 40 60 80 100 120

VOD=100mV

Typical Characteristics

Normalized Reset Threshold vs. Temperature

Temperature (°C)

Normalized Reset Threshold (%)

Supply Current vs. Temperature Reset T imeout Period vs. Temperature

Reset Propagation Delay vs. Temperature

Reset Propagation Delay (us)

Temperature (°C)

Reset T imeout Period (ms)

Temperature (°C)

Supply Current (uA)

Rev. A.3 - Feb., 2004

APR3101/2/3

www.anpec.com.tw8

Typical Characteristics

Power Up

Vcc(2V/div)

RESET(2V/div)

MR(2V/div)

RESET(2V/div)

MR(2V/div)

Vcc(2V/div)

Time (50ms/div) Time (500ms/div)

Power Down

Vcc(2V/div)

RESET(2V/div)

MR(2V/div)

Time (0.2us/div)

MR to Reset Delay

Time (10us/div)

Vcc to RESET Delay

Vcc(0.5V/div)

Vcc=VTH to (VTH-100mV)

RESET(2V/div)

Rev. A.3 - Feb., 2004

APR3101/2/3

www.anpec.com.tw9

Time (100ms/div)

Typical Characteristics

Manual Reset

Vcc(2V/div)

RESET(2V/div)

MR(2V/div)

Rev. A.3 - Feb., 2004

APR3101/2/3

www.anpec.com.tw10

RESET

VCC

GND

VCC

100K

Application Information

VCC Transient Rejection

The APR3101/2/3 have the function to reject the tran-

sient glitches from the power line. The Maximum Tran-

sient Duration vs. Reset Threshold Overdrive shows

at Typical Characteristics. The transient voltage with

the duration under the curve will not generate a reset

signal, e.g. a transient of 100mV below the reset

threshold voltage have the duration more than 35us, it

will generate a reset signal. Connect a 0.1uF bypass

capacitor to the VCC pin can improve the transient

immunity.

Manual Reset Input

The APR3101/2/3 have 3 output stage versions:

APR3101 is an active low push-pull output,when the

VCC drops below the reset threshold or MR goes low,

the RESET output generates a low signal. APR3102

is an active high push-pull output, when the VCC drops

below the reset threshold or MR goes low; the RE-

SET output generates a high signal (see Timing Chart).

APR3103 is an active low open drain output, the RE-

SET output must be connected a pull-up resistor to a

supply voltage that is lower than 6V, it suits to use in

multiple voltage systems (see Figure 2). The APR3101

RESET output is valid until the VCC=1.2V, below 1.2V

the IC is shutdown, and the output becomes a floating

state. If it is a trouble, a resistor should be connected

from reset output to ground to keep the reset output

low (see Figure 1). For The APR3102, a pull-up resis-

tor to VCC is required to keep the valid reset output for

VCC below 1.2V.¡@¡@

¡@¡@

¡@

Figure 1. Ensuring RESET Valid to VCC = 0 V

Reset Output

VCC

APR3103

RESET

GND

+3.3V +5.0V

VCC

GND

RESET

INPUT 5V

System

100k

Figure 2. APR3103 Open Drain Output with Multiple

Supplies

Force the MR low asserts the reset signal, asserted

reset continues as long as MR is low and after the

MR goes high the reset signal is maintained for a fixed

timeout period. The MR is internally connected a 47kΩ

resistor to VCC, so it can be floating if MR is not used.

The MR input also has a debounce time 500ns to avoid

the glitches. It allows use of a mechanical switch or a

TTL, and CMOS logic signal.

Rev. A.3 - Feb., 2004

APR3101/2/3

www.anpec.com.tw11

Packaging Information

SOT-23-5

E1 E

12 3

A2 A

A1 L 2 L

L 1

Millimeters Inches

Dim Min. Max. Min. Max.

A 0.95 1.45

0.037 0.057

A1 0.05 0.15 0.002 0.006

A2 0.90 1.30 0.035 0.051

b 0.30 0.50

0.011 0.019

D 2.8 3.00

0.110 0.118

E 2.6 3.00

0.102 0.118

E1 1.5 1.70

0.059 0.067

e 0.95BSC 0.037BSC

e1 1.90BSC 0.074BSC

L 0.35 0.55

0.014 0.022

L1 0.20 BSC 0.008 BSC

L2 0.5 0.7 0.020 0.028

N 5 5

α 0

° 10° 0

° 10°

Rev. A.3 - Feb., 2004

APR3101/2/3

www.anpec.com.tw12

Physical Specifications

t 2 5 C to P ea k

Ramp-up

Ramp-down

Preheat

Tsmax

Tsmin

Temperature

Time

Critical Z one

TL to TP

Reflow Condition (IR/Convection or VPR Reflow)

Classificatin Reflow Profiles

Profile Feature Sn-Pb Eutectic Assembly Pb-Free A ssembly

Large Body Small Body Large Body Small Body

Average ramp-up rate

(TL to TP) 3°C/second max. 3°C/second max.

Preheat

- Temperature Min (Tsmin)

- Temperature Mix (Tsmax)

- Time (min to max)(ts)

100°C

150°C

60-120 seconds

150°C

200°C

60-180 seconds

Tsmax to TL

- Temperature(TL)

- Time (tL)

3°C/second max

Peak Temperature(Tp) 183°C

60-150 seconds 217°C

60-150 seconds

Time within 5°C of actual Peak

Temperature(tp) 225 +0/-5°C 240 +0/-5°C 245 +0/-5°C 250 +0/-5°C

Ramp-down Rate 10-30 seconds 10-30 seconds 10-30 seconds 20-40 seconds

Time 25°C to Peak Temperature 6°C/second max. 6°C/second max.

6 minutes max. 8 minutes max.

Note: All temperatures refer to topside of the package. Measured on the body surface.

Te r minal Mater ial Solder-Plated Copper (Solde r Ma terial : 90/10 or 63 /37 S nPb) , 100 %Sn

Lead Solde rability Meets EIA S pe c ific ation R SI86 - 91 , AN SI/J- S T D-00 2 C ategory 3.

Rev. A.3 - Feb., 2004

APR3101/2/3

www.anpec.com.tw13

Reliability test program

Test item M ethod Description

SOLDERABILITY MIL-STD-883D-2003 245°C , 5 SEC

HOLT MIL-STD-883D-1005.7 1000 H rs Bias @ 125 °C

PCT JESD-22-B, A102 168 Hrs, 100 % RH , 121°C

TST MIL-STD-883D-1011.9 -65°C ~ 150°C , 200 C ycles

ESD MIL-STD-883D-3015.7 VHBM > 2KV, VM M > 200V

L a tc h-Up J E SD 7 8 1 0 ms , Itr > 100m A

Carrier Tape

Po P

Application A B C J T1 T2 W P E

178±172

± 1.0 13.0 + 0.2 2.5 ± 0.15 8.4 ± 2 1.5± 0.3 8.0+ 0.3

- 0.3 4 ± 0.1 1.75± 0.1

F D D1 Po P1 Ao Bo Ko t

SOT-23-5

3.5 ± 0.0 5 1.5 +0.1 1.5 +0.1 4.0 ± 0.1 2.0 ± 0.1 3.15 ± 0 .1 3.2± 0.1 1.4± 0.1 0.2±0.03

(mm)

Rev. A.3 - Feb., 2004

APR3101/2/3

www.anpec.com.tw14

Application Carrier W idth Cover Tap e Width Devices Per Reel

SOT- 23 8 5.3 3000

Cover Tape Dimensions

Anpec Electronics Corp.

Head Office :

5F, No. 2 Li-Hsin Road, SBIP,

Hsin-Chu, Taiwan, R.O.C.

Tel : 886-3-5642000

Fax : 886-3-5642050

Taipei Branch :

7F, No. 137, Lane 235, Pac Chiao Rd.,

Hsin T ien City, Taipei Hsien, Taiwan, R. O. C.

Tel : 886-2-89191368

Fax : 886-2-89191369

Customer Service