Datasheet > HMD4M72D18G

HMD4M72D18G

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) Fast Page Mode 4K Ref. 5V, DIMM 168 pin

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HMD4M72D18G 数据手册

HANBit

HMD4M72D18G

32Mbyte(4Mx72) Fast Page Mode 4K Ref. 5V, DIMM 168 pin

Part No. HMD4M72D18G

GENERAL DESCRIPTION

The HMD4M72D18G is a 4Mx72bits Dynamic RAM high density memory module. The HMD4M72D18G 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 HMD4M72D18 is a Dual In-line

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

FEATURES

PERFORMANCE RANGE

SPEED

t_RAC

50ns

60ns

t_CAC

18ns

20ns

t_RC

t_HPC

35ns

40ns

w Part Identification

-5

-6

90ns

110ns

HMD4M72D18G --- 4KCycles/64ms Ref, Gold Plate Lead

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 +5± 0.5V power supply

w Fast Page mode operation.

w Timing

50ns access

60ns access

w Packages

168-pin DIMM

-5

-6

w LVTTL compatible inputs and outputs

w FR4-PCB design

w Access times : 50, 60ns

PIN NAMES

Pin Name

A0-A11

Function

Pin Name

Function

Row Address Strobe

Pin Name

Vss

Function

Ground

Address Input (4k ref)

Address Input (8k ref)

Read/Write Enable

Output Enable

/RAS0, /RAS2

A0-A12

/CAS0 - /CAS7 Column Address Strobe

No Connection

Power (+5V)

/W0,/W2

/OE0,/OE2

SCL

Serial Clock

Don't use

Vcc

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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