A63P83361 datasheet(2/16 Pages) AMICC

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A63P83361

256K X 36 Bit Synchronous High Speed SRAM with

Preliminary

Burst Counter and Flow-through Data Output

PRELIMINARY

(July, 2005, Version 0.0)

AMIC Technology, Corp.

Features

Fast access times: 6.5/7.5/8.0 ns(153/133/117 MHz)

Single 2.5V±5% power supply

Synchronous burst function

Individual Byte Write control and Global Write

Three separate chip enables allow wide range of

options for CE control, address pipelining

Selectable BURST mode

SLEEP mode (ZZ pin) provided

Available in 100-pin LQFP package

Industrial operating temperature range: -45

°C to

+125

°C for -I series

General Description

The A63P83361 is a high-speed SRAM containing 9M

bits of bit synchronous memory, organized as 256K

words by 36 bits.

The

A63P83361

combines

advanced

synchronous

peripheral circuitry, 2-bit burst control, input registers,

output buffer and a 256K X 36 SRAM core to provide a

wide range of data RAM applications.

The positive edge triggered single clock input (CLK)

controls all synchronous inputs passing through the

registers. Synchronous inputs include all addresses (A0 -

A17), all data inputs (I/O1 - I/O36 ), active LOW chip

enable (

CE ), two additional chip enables (CE2, CE2 ),

burst control inputs ( ADSC , ADSP , ADV ), byte write

enables ( BWE , BW1 , BW2 , BW3 , BW4 ) and Global

Write ( GW ). Asynchronous inputs include output enable

( OE ), clock (CLK), BURST mode (MODE) and SLEEP

mode (ZZ).

Burst operations can be initiated with either the address

status processor ( ADSP ) or address status controller

( ADSC ) input pin. Subsequent burst sequence burst

addresses can be internally generated by the A63P83361

and controlled by the burst advance ( ADV ) pin. Write

cycles are internally self-timed and synchronous with the

rising edge of the clock (CLK).

This feature simplifies the write interface. Individual Byte

enables allow individual bytes to be written. BW1 controls

I/O1 - I/O9, BW2 controls I/O10 - I/O18, BW3 controls

I/O19 - I/O27, and BW4 controls I/O28 - I/O36, all on the

condition that BWE is LOW. GW LOW causes all bytes

to be written.

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