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AK6440A

Asahi Kasei Microsystems
Part Number AK6440A
Manufacturer Asahi Kasei Microsystems
Description 2K / 4K / 8Kbit Serial CMOS EEPROM
Published Mar 23, 2005
Detailed Description ASAHI KASEI [AK6420A/40A/80A] AK6420A / 40A / 80A 2K / 4K / 8Kbit Serial CMOS EEPROM Features † ADVANCED CMOS EEPROM ...
Datasheet PDF File AK6440A PDF File

AK6440A
AK6440A

Overview
ASAHI KASEI [AK6420A/40A/80A] AK6420A / 40A / 80A 2K / 4K / 8Kbit Serial CMOS EEPROM Features † ADVANCED CMOS EEPROM TECHNOLOGY † Wide Vcc (1.
8V ∼ 5.
5V) operation † AK6420A • • 2048 bits: 128 × 16 organization AK6440A • • 4096 bits: 256 × 16 organization AK6480A • • 8192 bits: 512 × 16 organization † ONE CHIP MICROCOMPUTER INTERFACE - Interface with one chip microcomputer's serial communication port directly † LOW POWER CONSUMPTION - 0.
75mA Max (Read operation) - 0.
8µA Max (Standby mode) † HIGH RELIABILITY -Endurance -Data Retention : 100K cycles : 10 years † SPECIAL FEATURES - High speed operation ( fMAX=1MHz: Vcc=2.
5V ) - Automatic write cycle time-out with auto-ERASE - Automatic address increment (READ) - Ready/Busy status signal - Software and Hardware controlled write protection † IDEAL FOR LOW DENSITY DATA STORAGE - Low cost, space saving, 8-pin package (SOP , SSOP) Block diagram DAS01E-00 -1- 1999/05 ASAHI KASEI [AK6420A/40A/80A] General Description The AK6420A/40A/80A is a 2048/4096/8192bit, serial, read/write, non-volatile memory device fabricated using an advanced CMOS EEPROM technology.
The AK6420A has 2048bits of memory organized into 128 registers of 16 bits each.
The AK6440A has 4096bits of memory organized into 256 registers of 16 bits each.
The AK6480A has 8192bits of memory organized into 512 registers of 16 bits each.
The AK6420A/40A/80A can operate full function under wide operating voltage range from 1.
8V to 5.
5V.
The charge up circuit is integrated for high voltage generation that is used for write operation.
The AK6420A/40A/80A can connect to the serial communication port of popular one chip microcomputer directly (3 line negative clock synchronous interface).
At write operation, AK6420A/40A/80A takes in the write data from data input pin (DI) to a register synchronously with rising edge of input pulse of serial clock pin (SK).
And at read operation, AK6420A/40A/80A takes out the read data from a register to data output pin (DO) synch...


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