Datasheet > HMD4M72D18EV-5

HMD4M72D18EV-5

更新时间： 2022-12-28 04:28:59

品牌	Logo	应用领域
HANBIT		/
页数	文件大小	规格书
16页	524K
描述
32Mbyte(4Mx72) EDO Mode 4K Ref. 3.3V, DIMM 168 pin

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HMD4M72D18EV-5 数据手册

HANBit

HMD4M72D18EV

32Mbyte(4Mx72) EDO Mode 4K Ref. 3.3V, DIMM 168 pin

Part No. HMD4M72D18EV-6

GENERAL DESCRIPTION

The HMD4M72D18EV is a 4Mx72bits Dynamic RAM high density memory module. The HMD4M72D18EV consists of

eighteen CMOS 4Mx4bits DRAMs in SOJ/TSOPІІ 400mil packages mounted on a 168-pin glass-epoxy substrate. A 0.1 or

0.22uF decoupling capacitor is mounted on the printed circuit board for each DRAM. The HMD4M72D18EV is a Dual In-

line Memory Module and is intended for mounting into 168 pin edge connector sockets

FEATURES

PERFORMANCE RANGE

w Part Identification

SPEED

t_RAC

50ns

60ns

t_CAC

15ns

17ns

t_RC

t_HPC

20ns

25ns

HMD4M72D18EV --- 4KCycles/64ms Ref, Gold Plate Lead

-5

-6

84ns

104ns

w High-density 32MByte design

w New JEDEC standard proposal without buffer

w CAS-before-RAS Refresh capability

w RAS-only and Hidden refresh capability

w Single +3.3± 0.3V power supply

w EDO mode operation.

w Timing

50ns access

60ns access

w Packages

168-pin DIMM

-5

w LVTTL compatible inputs and outputs

w FR4-PCB design

-6

w Access times : 50, 60ns

PIN NAMES

Pin Name

A0-A11

Function

Pin Name

Function

Pin Name

Function

Address Input (4k ref)

Address Input (8k ref)

/RAS0, /RAS2 Row Address Strobe

Vss

Ground

A0-A12

/CAS0 -

/CAS7

SCL

Column Address Strobe

No Connection

/W0,/W2

Read/Write Enable

Serial Clock

Don't use

Vcc

Power (+3.3V)

/OE0,/OE2 Output Enable

SDA

Serial Address /Data

I/O

SA0 – SA2 Address in EEPROM

CB0 - CB7

Check Bit

DQ0-DQ63 Data In/Out

URL:www.hbe.co.kr

REV.1.0. (August.2002)

- 1 ^-

HANBit Electronics Co.,Ltd.

12 3 4 5 6 7...16

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