Datasheet > HMS1M32M8L

HMS1M32M8L

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
HANBIT		静态存储器
页数	文件大小	规格书
7页	93K
描述
SRAM MODULE 4Mbyte(1Mx32Bit) ,LOW POWER,72Pin SIMM,5V

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HMS1M32M8L 数据手册

HANBit

HMS1M32M8L

SRAM MODULE 4Mbyte(1Mx32Bit) ,LOW POWER,72Pin SIMM,5V

HMS1M32M8L, HMS1M32Z8L

Part No.

GENERAL DESCRIPTION

The HMS1M32M8L is a static random access memory (SRAM) module containing 1,048,576 bits organized in a x32-bit

configuration. The module consists of eight 512K x 8 SRAMs mounted on a 72-pin, double-sided, FR4-printed circuit board.

The HMS1M32M8L also support low data retention voltage for battery back-up operations with low data retention current. Eight

chip enable inputs, (/CE_UU1, /CE_UM1, /CE_LM1, /CE_LL1, /CE_UU2, /CE_UM2, /CE_LM2, /CE_LL2) are used to enable

the module’s 4M bytes independently. Output enable(/OE) and write enable(/WE) can set the memory input and output.

Data is written into the SRAM memory when write enable (/WE) and chip enable (/CE) inputs are both LOW. Reading is

accomplished when /WE remains HIGH and /CE and output enable (/OE) are LOW.

For reliability, this SRAM module is designed as multiple power and ground pin. All module components may be powered from

a single +5V DC power supply and all inputs and outputs are fully TTL-compatible.

FEATURES

w Part identification

PIN ASSIGNMENT

- HMS1M32M8L : SIMM design

PIN SYMBOL PIN

SYMBOL

Vcc

PIN SYMBOL

- HMS1M32Z8L : ZIP design

The both are Pin to Pin Compatible

w Access times : 55ns, 70ns

Vss

DQ17

DQ18

DQ22

DQ21

DQ20

DQ19

Vcc

DQ8

DQ9

DQ10

/CE_LM2

Vcc

w High-density 4MByte design

w High-reliability, low-power design

w Single + 5V ±0.5V power supply

w Low data retention voltage : 2V(min)

w Three state output and TTL-compatible

w FR4-PCB design

Vcc

A11

/CE_LM1

DQ15

DQ14

DQ13

DQ12

DQ11

A18

/OE

A14

A10

A12

Vcc

/CE_LL2

/CE_LL1

DQ7

DQ0

DQ1

DQ2

DQ6

DQ5

DQ4

DQ3

A15

Vcc

w Low profile 72-Pin SIMM

A16

DQ24

DQ25

DQ26

/CE_UU2

/CE_UU1

DQ31

DQ30

DQ29

DQ28

DQ27

Vss

OPTIONS

w Timing

MARKING

Vcc

55ns access

70ns access

-55

-70

Vcc

/CE_UM2

/CE_UM1

DQ23

DQ16

A17

w Packages

72-pin SIMM

72-pin ZIP

/WE

A13

SIMM

TOP VIEW

URL: www.hbe.co.kr

HANBit ElectronicsCo.,Ltd.

Rev. 1.0 (September / 2002)

12 3 4 5 6 7

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