Datasheet > HMN1288J-70I

HMN1288J-70I

更新时间： 2024-09-23 21:54:47

品牌	Logo	应用领域
其他 - ETC		静态存储器
页数	文件大小	规格书
8页	161K
描述
Non-Volatile SRAM MODULE 1Mbit (128K x 8-Bit),34Pin-JLCC, 5V

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HMN1288J-70I 数据手册

HANBit

HMN1288J

Non-Volatile SRAM MODULE 1Mbit (128K x 8-Bit),34Pin-JLCC, 5V

Part No. HMN1288J

GENERAL DESCRIPTION

The HMN1288J Nonvolatile SRAM is a 1,048,576-bit static RAM organized as 131,072 bytes by 8 bits.

The HMN1288J has a self-contained lithium energy source provide reliable non-volatility coupled with the unlimited write

cycles of standard SRAM and integral control circuitry which constantly monitors the single 5V supply for an out-of-

tolerance condition. When such a condition occurs, the lithium energy source is automatically switched on to sustain the

memory until after Vcc returns valid and write protection is unconditionally enabled to prevent garbled data. In addition the

SRAM is unconditionally write-protected to prevent an inadvertent write operation. At this time the integral energy source is

switched on to sustain the memory until after V_CCreturns valid.

The HMN1288J uses extremely low standby current CMOS SRAM’s, coupled with small lithium coin cells to provide non-

volatility without long write-cycle times and the write-cycle limitations associated with EEPROM.

PIN ASSIGNMENT

FEATURES

w Access time : 55, 70 ns

/NBW

A(15)

A(16)

/RST

VCC

/WE

/OE

w High-density design : 4Mbit Design

w Battery internally isolated until power is applied

w Industry-standard 34-pin 128K x 8 pinout

w Unlimited write cycles

A(14)

A(13)

A(12)

A(11)

A(10)

A(9)

A(8)

A(7)

A(6)

A(5)

A(4)

A(3)

A(2)

A(1)

A(0)

/CE

w Data retention in the absence of V_CC

w 10-years minimum data retention in absence of power

w Automatic write-protection during power-up/power-down

cycles

D(7)

D(6)

D(5)

D(4)

D(3)

D(2)

D(1)

D(0)

VSS

w Data is automatically protected during power loss

w Conventional SRAM operation; unlimited write cycles

JLCC

TOP VIEW

OPTIONS

w Timing

55 ns

MARKING

-55

-70

70 ns

URL: www.hbe.co.kr

HANBit Electronics Co.,Ltd.

Rev.0.0 (FEBRUARY/ 2002)

12 3 4 5 6 7 8

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