ACE93C46A Datasheet, PDF (1/16 Pages) ACE Technology Co., LTD. – Three-wire Serial EEPROM

ACE93C46A/56A/66A
Three-wire Serial EEPROM
Description
The ACE93C46A/56A/66A series are 1024/2048/4096 bits of serial Electrical Erasable and
Programmable Read Only Memory, commonly known as EEPROM. They are organized as
64/128/256 words of 16 bits each when the ORG pin is connected to VCC (or unconnected) and
128/256/512 words of 8 bits (1 byte) each when the ORG pin is tied to ground. The devices are
fabricated with proprietary advanced CMOS process for low power and low voltage applications.
These devices are available in standard 8-lead DIP, 8-lead JEDEC SOP, 8-lead TSSOP and 8-lead
DFN packages. Our extended VCC range (1.8V to 5.5V) devices enables wide spectrum of
applications.
The ACE93C46A/56A/66A 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 (SCL). 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 the part is in the ERASE/WRITE ENABLE
state. Once a device begins its self-timed program procedure, the data out pin (DO) can indicate the
READY/BUSY status by rising chip select (CS).
Features
 Standard Voltage and Low Voltage Operation:
ACE 93C46A/56A/66A: VCC = 1.8V to 5.5V
 User Selectable Internal Organization:
ACE 93C46A:128 x 8 or 64 x 16
ACE 93C56A:256 x 8 or 128 x 16
ACE 93C66A:512 x 8 or 256 x 16
 2 MHz Clock Rate (5V) Compatibility.
 Industry Standard 3-wire Serial Interface.
 Self-Timed ERASE/WRITE Cycles (5ms max including auto-erase).
 Automatic ERAL before WRAL.
 Sequential READ Function.
 High Reliability: Typical 1 Million Erase/Write Cycle Endurance.
 100 Years Data Retention.
 Industrial Temperature Range (-40o C to 85o C).
 Standard 8-pin DIP/SOP/TSSOP/DFN Pb-free Packages
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