AK6416AM 데이터 시트보기 (PDF) - Asahi Kasei Microdevices

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AK6416AM

16Kbit Serial CMOS EEPROM

Asahi Kasei Microdevices 

ASAHI KASEI

„ Pin Description

[AK6416A]

CS (Chip Select)

When SK is high level and CS is changed from high level to low level, AK6416A can receive the instructions.

CS should be kept low level while receiving op-code, address and data and while outputting data. If CS is

changed to high level during the above period, AK6416A stops the instruction execution. When SK is low and

CS is changed from high level to low level, AK6416A will be in status output mode. The CS need not be low

level during the automatic write time-out period (BUSY status).

SK (Serial Clock)

The SK clock pin is the synchronous clock input for input/output data. At write operation, AK6416A takes in

the write data from data input pin (DI) synchronously with rising edge of input pulse of serial clock pin (SK).

And at read operation, AK6416A takes out the read data to data output pin (DO) synchronously with falling

edge of SK. The SK clock is not needed during the automatic write time-out period (BUSY status), the status

output period and when the device isn't selected (CS = high level).

DI (Data Input)

The op-code, address and write data is input to the DI pin.

DO (Data Output)

The DO pin outputs the read data and status signal and will be high impedance except for this timing.

RDY/BUSY (Ready/Busy status)

This pin outputs the internal programming status. When the AK6416A is in the automatic write time-out

period, this pin outputs the low level (BUSY status), and outputs the high level except for this timing.

RESET (Reset)

The AK6416A stops executing the write instruction when the RESET pin is high level. The RESET pin should

be low level while the write instruction input period and the automatic write time-out period. If the RESET pin

is high level while the automatic write time-out period, the AK6416A stops execution of internal programming

and the device returns to ready status. In this case the word data of the specified address will be incomplete.

When inputting the new instruction after RESET, the CS pin should be set to high level. The read, write enable

and write disable instructions are not affected by RESET pin status.

Vcc (Power Supply)

GND (Ground)

DAS02E-00

-4-

1999/05

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