TQFP Pin Descriptions

Symbol

Type

Description

In

Burst Address Inputs; Preload the burst counter

A

In

Address Inputs

CK

In

Clock Input Signal

In

In

In

In

W

In

Write Enable; active low

In

Chip Enable; active low

In

Chip Enable; Active High. For self decoded depth expansion

In

Chip Enable; Active Low. For self decoded depth expansion

G

In

Output Enable; active low

ADV

In

Advance/Load; Burst address counter control pin

CKE

In

Clock Input Buffer Enable; active low

I/O

Byte A Data Input and Output pins

I/O

Byte B Data Input and Output pins

I/O

Byte C Data Input and Output pins

I/O

Byte D Data Input and Output pins

ZZ

In

Power down control; active high

FT

In

Pipeline/Flow Through Mode Control; active low

LBO

In

Linear Burst Order; active low

In

Core power supply

In

Ground

In

Output driver power supply

NC

—

No Connect

NU

—

Not Used—There is an internal chip connection to these pins, but they are unused by the device. They may

GS81280Z18/36GT-400/333/250/200

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

Rev: 1.01 5/2017

4/22

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