IC42S16800-8TG datasheet(5/69 Pages) ICSI

Part #	IC42S16800-8TG

Description	4(2)M x 8(16) Bits x 4 Banks (128-MBIT) SYNCHRONOUS DYNAMIC RAM

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Manufacturer	ICSI [Integrated Circuit Solution Inc]

Direct Link	http://www.icsi.com.tw

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5 / 69 page

IC42S81600/IC42S81600L

IC42S16800/IC42S16800L

Integrated Circuit Solution Inc.

5

DR023-0E 6/11/2004

PIN FUNCTIONS

Symbol

Type

Function (In Detail)

CLK

Input Pin

Master Clock: Other inputs signals are referenecd to the CLK rising edge

CKE

Input Pin

Clock Enable: CKE HIGH activates, and CKE LOW deactivates internal

clock signals,device input buffers and output drivers. Deactivating the clock

provides PRECHARGE POWER-DOWN and SELF REFRESH operation

(all banks idle), or ACTIVE POWER-DOWN (row ACTIVE in any bank).

CS

Input Pin

Chip Select: CS enables (registered LOW) and disables (registered HIGH)

the command decoder. All commands are masked when CS is registered

HIGH. CS provides for external bank selection on systems with multiple

banks. CS is considered part of the command code.

RAS, CAS, WE

Input Pin

Command Inputs:

RAS, CAS and WE (along with CS) define the command

being entered.

A0-A11

Input Pin

Address Inputs: Provide the row address for ACTIVE commands, and the

column address and AUTO PRECHARGE bit for READ/WRITE

commands, to select one location out of the memory array in the respective

bank. The row address is specified by A0-A11. The column address is

specified by A0-A9 (IC42S81600) / A0-A8 (IC42S16800)

BA0,BA1

Input Pin

Bank Address Inputs: BA0 and BA1 define to which bank an ACTIVE,

READ, WRITE or PRECHARGE command is being applied.

DQM, UDQM ,LDQM

Input Pin

Din Mask / Output Disable: When DQM is high in burst write, Din for the

current cycle is masked. When DQM is is high in burst read, Dout is

disable at the next but one cycle.

DQ0 to DQ15

I/O Pin

Data Input / Output: Data bus.

VDD, VSS

Power Supply Pin

Power Supply for the memory array and peripheral circuitry.

VDDQ, VSSQ

Power Supply Pin

Power Supply are supplied to the output buffers only.

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IC42S16800-8TG Datasheet(PDF) 5 Page - Integrated Circuit Solution Inc

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