SM55161A Austin Semiconductor, SM55161A Datasheet

SM55161A

Manufacturer Part Number

SM55161A

Description

262144 x 16 BIT VRAM MULTIPORT VIDEO RAM

Manufacturer

Austin Semiconductor

Datasheet

1.SM55161A.pdf (64 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

SM55161A-75HKCM

Manufacturer:

TI/ASI

Quantity:

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262144 x 16 BIT VRAM

MULTIPORT VIDEO RAM

AVAILABLE AS MILITARY

• Military Processing Flow(SM Level)

• -55C to 125C temperature

FEATURES

• Organization:

• Dual-Port Accessibility – Simultaneous and Asynchronous

Access From the DRAM and SAM Ports

• Bidirectional Data-Transfer Function From the DRAM to

the Serial-Data Register, and from Serial Data Register to DRAM

• (8 x 8) x 2 Block Write feature for fast area fill

• Write-Per-Bit Feature for Selective Write to Each RAM I/O; Two

Write-Per-Bit Modes to Simplify System Design

• Byte-Write Control (CASL, CASU) Provides Flexibility

• Extended Data Output for Faster System Cycle Time

• Enhanced Page-Mode Operation for Faster Access

• CAS-Before-RAS (CBR) and Hidden-Refresh Modes

• Long Refresh Period: Every 8 ms (Maximum)

• Up to 50-MHz Uninterrupted Serial-Data Streams

• 512 Selectable Serial-Register Starting Locations

• SE-Controlled Register-Status QSF

• Split-Register-Transfer Read for Simplified Real-Time Register

Load

• Programmable Split-Register Stop Point

• 3-State Serial Outputs Allow Easy Multiplexing of Video-Data

Streams

• Pin-out Compatible upgrade from SM55161

• Compatible With JEDEC Standards

OPTIONS

• Timing

• Package

• Operating Temperature Ranges

SMJ55161A

Rev. 1.6 03/05

SPECIFICATIONS

70ns access

75ns access

80ns access

68 pin PGA

64 pin Flatpack

- Military (-55

- Industrial (-40

– DRAM: 262 144 by 16 Bits

– SAM: 512 by 16 Bits

C to +125

C to +85

Austin Semiconductor, Inc.

MARKING

-70

-75

-80

HKC

M suffix

I suffix

PIN DESCRIPTIONS

A0-A8

CASL\, CASU\

DQ0-DQ15

DSF

NC/GND

QSF

RAS\

SE\

SQ0-SQ15

TRG\

WE\

Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.

For more products and information

www.austinsemiconductor.com

64-Pin Ceramic Flatpack (HKC)

Address inputs

Column-Address Strobe/Byte Selects

DRAM Data I/O, Write Mask Data

Special Function Select

Special-Function Select

No Connect/Ground (NOTE: Not

connected internally to V

Special-Function Output

Row-Address Strobe

Serial Clock

Serial Enable

Serial-Data Output

Output Enable, Transfer Select

5V Supply (TYP)

Ground

DRAM Write-Enable Select

please visit our web site at

PIN ASSIGNMENT

(Top View)

DESCRIPTION

Production

SM55161A

)

VRAM

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