AK6480BH

AK6480BH Datasheet

[AK6420B/40B/80B]

Part	Datasheet
AK6480BH	AK6480BH (pdf)

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ASAHI KASEI [AK6420B/40B/80B] AK6420B / 40B / 80B 2K / 4K / 8Kbit Serial CMOS EEPROM ADVANCED CMOS EEPROM TECHNOLOGY Wide Vcc 1.8V ~ 5.5V operation AK6420B • • 2048 bits 128 16 organization AK6440B • • 4096 bits 256 16 organization AK6480B • • 8192 bits 512 16 organization ONE CHIP MICROCOMPUTER INTERFACE - Interface with one chip microcomputer's serial communication port directly LOW POWER CONSUMPTION - 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 - Software and Hardware controlled write protection IDEAL FOR LOW DENSITY DATA STORAGE - Low cost, space saving, 8-pin package MSOP DAS03E-00 1999/05 ASAHI KASEI [AK6420B/40B/80B] General Description The AK6420B/40B/80B is a 2048/4096/8192bit, serial, read/write, non-volatile memory device fabricated using an advanced CMOS E2PROM technology. The AK6420B has 2048bits of memory organized into 128 registers of 16 bits each. The AK6440B has 4096bits of memory organized into 256 registers of 16 bits each. The AK6480B has 8192bits of memory organized into 512 registers of 16 bits each. The AK6420B/40B/80B 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 AK6420B/40B/80B can connect to the serial communication port of popular one chip microcomputer directly 3 line negative clock synchronous interface . At write operation, AK6420B/40B/80B 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, AK6420B/40B/80B takes out the read data from a register to data output pin DO synchronously with falling edge of SK. The AK6420B/40B/80B has 4 instructions such as READ, WRITE, WREN write enable and WRDS write disable . Each instruction is organized by op-code block 8bits , address block 8bits and data 8bits When input level of SK pin is high level and input level of chip select CS pin is changed from high level to low level, AK6420B/40B/80B can receive the instructions. Special features of the AK6420B/40B/80B include automatic write time-out with auto-ERASE, Ready/Busy status signal output and ultra-low standby power mode when deselected CS=high . • Software and Hardware controlled write protection The AK6420B/40B/80B has 2 hardware and software write protection functions. After power on or after execution of WRDS write disable instruction, execution of WRITE instruction will be disabled. This write protection condition continues until WREN instruction is executed or Vcc is removed from the part. Execution of READ instruction is independent of both WREN and WRDS instructions. Reset pin should be low level when WRITE instruction is executed. When the Reset pin is high level, the WRITE instruction is not executed. • Ready/Busy status signal The DO pin indicates the Busy status. When input level of SK pin is low level and input level of CS pin is changed from high level to low level, the AK6420B/40B/80B is in the status output mode and the DO pin indicates the Ready/Busy status. The Ready/ Busy status outputs on DO pin until CS pin is changed from low level to high level, or first bit "1" of op-code of next instruction is given to the part. Except when the device is in the status output mode or outputs data, the DO pin is in the high impedance state. - Type of Products Model AK6420BH AK6440BH AK6480BH Memory size 2Kbits 4Kbits 8Kbits Temp.Range -40°C~85°C -40°C~85°C -40°C~85°C Vcc 1.8V~5.5V 1.8V~5.5V 1.8V~5.5V Package 8pin Plastic MSOP 8pin Plastic MSOP 8pin Plastic MSOP DAS03E-00 1999/05 ASAHI KASEI Pin arrangement [AK6420B/40B/80B] Pin Name Function Chip Select Serial Data Clock Serial Data Input Serial Data Output RESET Input Power Supply

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ASAHI KASEI
[AK6420B/40B/80B]

AK6420B / 40B / 80B
2K / 4K / 8Kbit Serial CMOS EEPROM

ADVANCED CMOS EEPROM TECHNOLOGY

Wide Vcc 1.8V ~ 5.5V operation AK6420B
•
• 2048 bits 128 16 organization

AK6440B
•
• 4096 bits 256 16 organization AK6480B
•
• 8192 bits 512 16 organization

ONE CHIP MICROCOMPUTER INTERFACE - Interface with one chip microcomputer's serial communication port directly

LOW POWER CONSUMPTION - 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 - Software and Hardware controlled write protection

IDEAL FOR LOW DENSITY DATA STORAGE - Low cost, space saving, 8-pin package MSOP

DAS03E-00
1999/05

ASAHI KASEI
[AK6420B/40B/80B]

General Description The AK6420B/40B/80B is a 2048/4096/8192bit, serial, read/write, non-volatile memory device fabricated using an advanced CMOS E2PROM technology. The AK6420B has 2048bits of memory organized into 128 registers of 16 bits each. The AK6440B has 4096bits of memory organized into 256 registers of 16 bits each. The AK6480B has 8192bits of memory organized into 512 registers of 16 bits each. The AK6420B/40B/80B 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 AK6420B/40B/80B can connect to the serial communication port of popular one chip microcomputer directly 3 line negative clock synchronous interface . At write operation, AK6420B/40B/80B 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, AK6420B/40B/80B takes out the read data from a register to data output pin DO synchronously with falling edge of SK. The AK6420B/40B/80B has 4 instructions such as READ, WRITE, WREN write enable and WRDS write disable . Each instruction is organized by op-code block 8bits , address block 8bits and data 8bits When input level of SK pin is high level and input level of chip select CS pin is changed from high level to low level, AK6420B/40B/80B can receive the instructions. Special features of the AK6420B/40B/80B include automatic write time-out with auto-ERASE, Ready/Busy status signal output and ultra-low standby power mode when deselected CS=high .
• Software and Hardware controlled write protection

The AK6420B/40B/80B has 2 hardware and software write protection functions. After power on or after execution of WRDS write disable instruction, execution of WRITE instruction will be disabled. This write protection condition continues until WREN instruction is executed or Vcc is removed from the part. Execution of READ instruction is independent of both WREN and WRDS instructions. Reset pin should be low level when WRITE instruction is executed. When the Reset pin is high level, the WRITE instruction is not executed.
• Ready/Busy status signal

The DO pin indicates the Busy status. When input level of SK pin is low level and input level of CS pin is changed from high level to low level, the AK6420B/40B/80B is in the status output mode and the DO pin indicates the Ready/Busy status. The Ready/ Busy status outputs on DO pin until CS pin is changed from low level to high level, or first bit "1" of op-code of next instruction is given to the part. Except when the device is in the status output mode or outputs data, the DO pin is in the high impedance state.
- Type of Products

Model AK6420BH AK6440BH AK6480BH

Memory size 2Kbits 4Kbits 8Kbits

Temp.Range -40°C~85°C -40°C~85°C -40°C~85°C

Vcc 1.8V~5.5V 1.8V~5.5V 1.8V~5.5V

Package 8pin Plastic MSOP 8pin Plastic MSOP 8pin Plastic MSOP

DAS03E-00
1999/05

ASAHI KASEI

Pin arrangement
[AK6420B/40B/80B]

Pin Name

Function

Chip Select

Serial Data Clock

Serial Data Input

Serial Data Output

RESET Input

Power Supply

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Datasheet ID: AK6480BH 515915