Rainbow Electronics AT93C86 - Manual

1
Features
• Low-voltage and Standard-voltage Operation
– 2.7 (V
CC
= 2.7V to 5.5V)
• User Selectable Internal Organization
– 16K: 2048 x 8 or 1024 x 16
• 3-wire Serial Interface
• Sequential Read Operation
• Schmitt Trigger, Filtered Inputs for Noise Suppression
• 2 MHz Clock Rate (5V) Compatibility
• Self-timed Write Cycle (10 ms max)
• High Reliability
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
• Automotive Grade and Extended Temperature Devices Available
• 8-lead PDIP, 8-lead JEDEC SOIC, and 8-lead TSSOP Packages
Description
The AT93C86 provides 16384 bits of serial electrically erasable programmable read
only memory (EEPROM) organized as 1024 words of 16 bits each when the ORG Pin
is connected to V
CC
and 2048 words of 8 bits each when it is tied to ground. The
device is optimized for use in many industrial and commercial applications where low
power and low voltage operations are essential. The AT93C86 is available in space
saving 8-lead PDIP, 8-lead JEDEC SOIC and 8-lead TSSOP packages.
The AT93C86 is enabled through the Chip Select pin (CS), and accessed via a 3-wire
serial interface consisting of Data Input (DI), Data Output (DO), and Shift Clock (SK).
3-wire Serial
EEPROM
16K (2048 x 8 or 1024 x 16)
AT93C86
Rev. 1237D–SEEPR–08/02
Pin Configurations
Pin Name Function
CS Chip Select
SK Serial Data Clock
DI Serial Data Input
DO Serial Data Output
GND Ground
VCC Power Supply
ORG Internal Organization
DC Don’t Connect
8-lead PDIP
1
2
3
4
8
7
6
5
CS
SK
DI
DO
VCC
DC
ORG
GND
8-lead SOIC
1
2
3
4
8
7
6
5
CS
SK
DI
DO
VCC
DC
ORG
GND
(continued)
8-lead TSSOP
1
2
3
4
8
7
6
5
CS
SK
DI
DO
VCC
DC
ORG
GND