ACE93C46.56.66
Three-wire Serial EEPROM
Description
The ACE93C46/56/66 provides 1024/2048/4096 bits of serial electrically erasable programmable read only memory
(EEPROM) organized as 64/128/256 words of 16 bits each, when the ORG pin is connected to VCC and 128/256/512
words of 8 bits each when it is tied to ground. The ACE93C46/56/66 is available in space-saving 8-lead PDIP, 8-lead
TSSOP and 8-lead JEDEC SOIC packages. The ACE93C46/56/66 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). Upon
receiving a Read instruction at DI, the address is decoded and the data is clocked out serially on the data output pin DO.
The WRITE cycle is completely self-timed and no separate erase cycle is required before write. The Write cycle is only
enabled when it is in the Erase/Write Enable state. When CS is brought “high” following the initiation of a write cycle, the
DO pin outputs the Ready/Busy status.
Features
Low-voltage operation – 1.8 (VCC=1.8V to 5.5V)
Three-wire serial Interface
2MHz clock rate(5V) compatibility
Self-timed write cycle (5 ms max)
High-reliability – Endurance: 1 Million write cycles
Data retention: 100 Years
Packaging Type
DIP-8
SOP-8
TSSOP-8
Pin Configurations
Pin Name
CS
SK
DI
DO
GND
Vcc
ORG
DC
Function
Chip select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
Internal Organization
Don’t Connect
VER 1.5
1
ACE [ ACE TECHNOLOGY CO., LTD. ]
