N08M1618L1AB - NanoAmp Solutions, Inc.

NanoAmp Solutions, Inc.

1982 Zanker Road, San Jose, CA 95112

ph: 408-573-8878, FAX: 408-573-8877

www.nanoamp.com

Stock No. 23211-01 11/01/02 1

The specifications of this device are subject to change without notice. For latest documentation see http://www.nanoamp.com.

N08M1618L1A

8Mb Ultra-Low Power Asynchronous Medical CMOS SRAM

512Kx16 bit

Overview

The N08M1618L1A is an integrated memory

device intended for non life-support (Class 1 or

2) medical applications. This device is a 8

megabit memory organized as 524,288 words by

16 bits. The device is designed and fabricated

using NanoAmp’s advanced CMOS technology

with reliability inhancements for medical users. The

base design is the same as NanoAmp’s

N08M1618L1A, which has further reliability

processing for life-support (Class 3) medical

applications. The device operates with two chip

enable (CE1 and CE2) controls and output enable

(OE) to allow for easy memory expansion. Byte

controls (UB and LB) allow the upper and lower

bytes to be accessed independently and can also

be used to deselect the device. This device is

optimal for various applications where low-power is

critical such as battery backup and hand-held

devices. The device can operate over a very wide

temperature range of -40oC to +85oC and is

available in a JEDEC standard BGA package.

Features

• Dual voltage for Optimum Performance:

Vccq - 2.3 to 3.6 Volts

Vcc - 1.4 to 2.2 Volts

• Very low standby current

0.4µA at 1.8V and 37 deg C

• Very low operating current

1.0mA at 1.8V and 1µs (Typical)

• Very low Page Mode operating current

0.5mA at 1.8V and 1µs (Typical)

• Simple memory control

Dual Chip Enables (CE1 and CE2)

Byte control for independent byte operation

Output Enable (OE) for memory expansion

• Low voltage data retention

Vcc = 1.2V

• Special Processing to reduce Soft Error Rate

(SER)

• Automatic power down to standby mode

Pin Configuration

Product Family

Part Number Package Type Operating

Temperature

Power

Supply Speed

Standby

Current (ISB),

Max

Operating

Current (Icc),

Max

N08M1618L1AB 48 - BGA

-40oC to +85oC1.4V-3.6V(VCCQ)

1.4V-2.2V(VCC)

85ns @ 1.7V

150ns @ 1.4V 20 µA3 mA @ 1MHz

N08M1618L1AD Known Good Die

123456

ALB OE A0 A

1 A2 CE2

BI/O8 UB A3 A

4 CE1 I/O0

CI/O9 I/O10 A

5 A

6 I/O1 I/O2

DVSS I/O11 A

17 A7I/O3VCC

EVCCQ I/O12 NC A16 I/O4VSS

FI/O14 I/O13 A14 A15 I/O5I/O6

GI/O15 NC A12 A13 WE I/O7

HA18 A8A9A10 A11 NC

48 Pin BGA (top)

8 x 10 mm

Pin Descriptions

Pin Name Pin Function

A0-A18 Address Inputs

WE Write Enable Input

CE1, CE2 Chip Enable Input

OE Output Enable Input

LB Lower Byte Enable Input

UB Upper Byte Enable Input

I/O0-I/O15 Data Inputs/Outputs

VCC Power

VSS Ground

VCCQ Power I/O pins only

NC Not Connected

Stock No. 23211-01 11/01/02 2

The specifications of this device are subject to change without notice. For latest documentation see http://www.nanoamp.com.

NanoAmp Solutions, Inc. N08M1618L1A

Functional Block Diagram

Functional Description

CE1 CE2 WE OE I/O0 - I/O7MODE POWER

H X X X High Z Standby1

1. When the device is in standby mode, control inputs (WE and OE), address inputs and data input/outputs are internally isolated

from any external influence and disabled from exerting any influence externally.

Standby

X L X X High Z Standby1Standby

LHL

2. When WE is invoked, the OE input is internally disabled and has no effect on the circuit.

Data In Write2Active

LHHL Data Out Read Active

L H H H High Z Active Active

Capacitance1

1. These parameters are verified in device characterization and are not 100% tested

Item Symbol Test Condition Min Max Unit

Input Capacitance CIN VIN = 0V, f = 1 MHz, TA = 25oC8pF

I/O Capacitance CI/O VIN = 0V, f = 1 MHz, TA = 25oC8pF

Control

Logic

Decode

Logic

Address

Inputs

- A

Input/

Output

Mux

and

Buffers

I/O0 - I/O7

I/O8 - I/O15

Address

CE1

512K x 16

Memory

Array

Stock No. 23211-01 11/01/02 3

The specifications of this device are subject to change without notice. For latest documentation see http://www.nanoamp.com.

NanoAmp Solutions, Inc. N08M1618L1A

Absolute Maximum Ratings1

1. Stresses greater than those listed above may cause permanent damage to the device. This is a stress rating only and functional

operation of the device at these or any other conditions above those indicated in the operating section of this specification is not

implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.

Item Symbol Rating Unit

Voltage on any pin relative to VSS VIN,OUT –0.3 to VCC+0.3 V

Voltage on VCC Supply Relative to VSS VCC –0.3 to 4.5 V

Power Dissipation PD500 mW

Storage Temperature TSTG –40 to 125 oC

Operating Temperature TA-40 to +85 oC

Soldering Temperature and Time TSOLDER 240oC, 10sec(Lead only) oC

Operating Characteristics (Over Specified Temperature Range)

Item Symbol Test Conditions Min. Typ1

1. Typical values are measured at Vcc=Vcc Typ., TA=25°C and not 100% tested.

Max Unit

Core Supply Voltage VCC 1.4 1.8 2.3 V

I/O Supply Voltage VCCQ VCCQ > or = VCC 1.4 1.8 3.6 V

Data Retention Voltage VDR Chip Disabled31.2 V

Input High Voltage VIH VCCQ-0.6 VCCQ+0.3 V

Input Low Voltage VIL –0.3 0.6 V

Output High Voltage VOH IOH = 0.2mA VCCQ–0.2 V

Output Low Voltage VOL IOL = -0.2mA 0.2 V

Input Leakage Current ILI VIN = 0 to VCC 0.1 µA

Output Leakage Current ILO OE = VIH or Chip Disabled 0.1 µA

Read/Write Operating Supply Current

@ 1 µs Cycle Time2

2. This parameter is specified with the outputs disabled to avoid external loading effects. The user must add current required to drive

output capacitance expected in the actual system.

ICC1

VCC=2.3 V, VIN=VIH or VIL

Chip Enabled, IOUT = 0 1.5 2.5 mA

Read/Write Operating Supply Current

@ 85 ns Cycle Time2ICC2

VCC=2.3 V, VIN=VIH or VIL

Chip Enabled, IOUT = 0 10.0 13.0 mA

Page Mode Operating Supply Current

@ 85 ns Cycle Time2 (Refer to Power

Savings with Page Mode Operation

diagram)

ICC3

VCC=2.3 V, VIN=VIH or VIL

Chip Enabled, IOUT = 0 3.5 mA

Read/Write Quiescent Operating Sup-

ply Current3

3. This device assumes a standby mode if the chip is disabled (CE1 high or CE2 low). In order to achieve low standby current all

inputs must be within 0.2 volts of either VCC or VSS.

ICC4

VCC=2.3 V, VIN=VIH or VIL

Chip Enabled, IOUT = 0,

f = 0

0.2 µA

Standby Current3ISB1

VIN = VCC or 0V

Chip Disabled

tA= 85oC, VCC = 2.3 V

0.2 20.0 µA

Data Retention Current3IDR

VCC = 1.8V, VIN = VCC or 0

Chip Disabled, tA= 85oC0.1 1.0 µA

Stock No. 23211-01 11/01/02 4

The specifications of this device are subject to change without notice. For latest documentation see http://www.nanoamp.com.

NanoAmp Solutions, Inc. N08M1618L1A

Power Savings with Page Mode Operation (WE = VIH)

Note: Page mode operation is a method of addressing the SRAM to save operating current. The internal

organization of the SRAM is optimized to allow this unique operating mode to be used as a valuable power

saving feature.

The only thing that needs to be done is to address the SRAM in a manner that the internal page is left open

and 8-bit words of data are read from the open page. By treating addresses A0-A3 as the least significant

bits and addressing the 16 words within the open page, power is reduced to the page mode value which is

considerably lower than standard operating currents for low power SRAMs.

Page Address (A4 - A17)

CE1

CE2

Word Address (A0 - A3)

Open page

Word 1 Word 2 Word 16

...

Stock No. 23211-01 11/01/02 5

The specifications of this device are subject to change without notice. For latest documentation see http://www.nanoamp.com.

NanoAmp Solutions, Inc. N08M1618L1A

Timing Test Conditions

Item

Input Pulse Level 0.1VCC to 0.9 VCC

Input Rise and Fall Time 5ns

Input and Output Timing Reference Levels 0.5 VCC

Output Load CL = 30pF

Operating Temperature -40 to +85 oC

Timing VCCQ > or = VCC

Item Symbol

VCC = 1.4 - 2.3 V VCC = 1.7 - 2.3 V

Units

Min. Max. Min. Max.

Read Cycle Time tRC 150 85 ns

Address Access Time tAA 150 85 ns

Chip Enable to Valid Output tCO 150 85 ns

Output Enable to Valid Output tOE 50 40 ns

Chip Enable to Low-Z output tLZ 20 10 ns

Output Enable to Low-Z Output tOLZ 20 5 ns

Chip Disable to High-Z Output tHZ 030015ns

Output Disable to High-Z Output tOHZ 030015ns

Output Hold from Address Change tOH 20 10 ns

Write Cycle Time tWC 150 85 ns

Chip Enable to End of Write tCW 75 50 ns

Address Valid to End of Write tAW 75 50 ns

Write Pulse Width tWP 50 40 ns

Address Setup Time tAS 00ns

Write Recovery Time tWR 00ns

Write to High-Z Output tWHZ 30 15 ns

Data to Write Time Overlap tDW 50 40 ns

Data Hold from Write Time tDH 00

End Write to Low-Z Output tOW 10 5 ns

Stock No. 23211-01 11/01/02 6

The specifications of this device are subject to change without notice. For latest documentation see http://www.nanoamp.com.

NanoAmp Solutions, Inc. N08M1618L1A

Timing of Read Cycle (CE1 = OE = VIL, WE = CE2 = VIH)

Timing Waveform of Read Cycle (WE=VIH)

Address

Data Out

tRC

tAA

tOH

Data ValidPrevious Data Valid

Address

LB#, UB#

OE#

Data Valid

tRC

tAA

tCO

tHZ(1,2)

tOHZ(1)

tLBHZ, tUBHZ

tOLZ

tOE

tLZ(2)

High-Z

Data Out

tLB, tUB

tLBLZ, tUBLZ

CE1#

CE2

Stock No. 23211-01 11/01/02 7

The specifications of this device are subject to change without notice. For latest documentation see http://www.nanoamp.com.

NanoAmp Solutions, Inc. N08M1618L1A

Timing Waveform of Write Cycle (WE control)

Timing Waveform of Write Cycle (CE1 Control)

Address

Data In

CE1#

CE2

LB#, UB#

Data Valid

tWC

tAW

tCW

tWR

tWHZ

tDH

High-Z

WE#

Data Out

High-Z

tOW

tAS tWP

tDW

tLBW, tUBW

Address

WE#

Data Valid

tWC

tAW

tCW

tWR

tDH

LB#, UB#

Data In

High-Z

tAS

tWP

tLZ

tDW

tLBW, tUBW

Data Out

tWHZ

CE1#

(for CE2 Control, use

inverted signal)

Stock No. 23211-01 11/01/02 8

The specifications of this device are subject to change without notice. For latest documentation see http://www.nanoamp.com.

NanoAmp Solutions, Inc. N08M1618L1A

Ball Grid Array Package

Ordering Information

NanoAmp Solutions, Inc. ("NanoAmp") reserves the right to change or modify the information contained in this data sheet and the products described therein, without prior notice.

NanoAmp does not convey any license under its patent rights nor the rights of others. Charts, drawings and schedules contained in this data sheet are provided for illustration pur-

poses only and they vary depending upon specific applications.

NanoAmp makes no warranty or guarantee regarding suitability of these products for any particular purpose, nor does NanoAmp assume any liability arising out of the application

or use of any product or circuit described herein. NanoAmp does not authorize use of its products as critical components in any application in which the failure of the NanoAmp

product may be expected to result in significant injury or death, including life support systems and critical medical instruments.

Revision History

Revision # Date Change Description

01 11/01/02 Initial Release

8 mm

6 mm

0.75 mm

BOTTOM VIEW

N08M1618L1AX-XX X

I = Industrial, -40°C to 85°C

85 = 85ns @ 1.7V

B = 48-ball BGA

D = Known Good Die

Temperature

Performance

Package Type