HMD4M72D18EG

HANBit HMD4M72D18EG 32Mbyte(4Mx72) EDO Mode 4K Ref. 5V, DIMM 168 pin Part No. HMD4M72D18EG-6 GENERAL DESCRIPTION The HMD4M72D18EG is a 4Mx72bits Dynamic RAM high density memory module. The HMD4M72D18EG 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 HMD4M72D18EG is a Dual Inline Memory Module and is intended for mounting into 168 pin edge connector sockets www.DataSheet4U.com FEATURES PERFORMANCE RANGE w Part Identification HMD4M72D18EG --- 4KCycles/64ms Ref, Gold Plate Lead SPEED -5 -6 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 EDO mode operation. w LVTTL compatible inputs and outputs w FR4-PCB design w Access times : 50, 60ns w Timing 50ns access 60ns access w Packages 168-pin DIMM D -5 -6 tRAC 50ns 60ns tCAC 15ns 17ns tRC 84ns 104ns tHPC 20ns 25ns PIN NAMES Pin Name A0-A11 A0-A12 Function Address Input (4k ref) Address Input (8k ref) Pin Name /RAS0, /RAS2 /CAS0 /CAS7 /W0,/W2 /OE0,/OE2 Read/Write Enable Output Enable SCL DU Serial Clock Don't use Vcc SDA Power (+5V) Serial Address /Data I/O SA0 – SA2 Address in EEPROM CB0 - CB7 Check Bit DQ0-DQ63 Data In/Out Function Row Address Strobe Column Address Strobe Pin Name Vss NC Function Ground No Connection URL:www.hbe.co...