AT28C16-T

16K (2K x 8)

PCMCIA

Nonvolatile

Attribute

Memory

TSOP

Top View

Pin Name

Function

A0 - A10

Addresses

CE

Chip Enable

OE

Output Enable

WE

Write Enable

I/O0 - I/O7

Data Inputs/Outputs

RDY/BSY

Ready/Busy Output

NC

No Connect

Pin Configurations

Features

Self-Timed Byte Writes

On-chip Address and Data Latch for SRAM-like Write Operation

Fast Write Cycle Time - 1 ms

5-Volt-Only Nonvolatile Writes

RDY/BUSY Output

DATA Polling

Endurance: 100,000 Write Cycles

Data Retention: 10 Years Minimum

30 mA Active Current

100

µA Standby Current

Description

The AT28C16-T is the ideal nonvolatile attribute memory: it is a low power, 5-volt-only

100

µΑ. The AT28C16-T is written like a Static RAM, eliminating complex program-

ming algorithms. The fast write cycle times of 1 ms, allow quick card reconfiguration

in-system. Data retention is specified as 10 years minimum, precluding the necessity

for batteries. Three access times have been specified to allow for varying layers of

buffering between the memory and the PCMCIA interface.

The AT28C16-T is accessed like a Static RAM for read and write operations. During

a byte write, the address and data are latched internally. Following the initiation of a

write cycle, the device will go to a busy state and automatically write the latched data

using an internal control timer. The device provides two methods for detecting the end

0285C

AT28C16-T

2-175