AK6420B データシートの表示（PDF） - Asahi Kasei Microdevices

部品番号

コンポーネント説明

メーカー

AK6420B

2K / 4K / 8Kbit Serial CMOS EEPROM

Asahi Kasei Microdevices 

ASAHI KASEI

[AK6420B/40B/80B]

WREN / WRDS ( Write Enable and Write Disable )

When Vcc is applied to the part, it powers up in the programming disable (WRDS) state.

Programming must be preceded by a programming enable (WREN) instruction. Programming

remains enabled until a programming disable (WRDS) instruction is executed or Vcc is removed

from the part. The programming disable instruction is provided to protect against accidental data

disturb. Execution of a read instruction is not affected by both WREN and WRDS instructions.

DAS03E-00

-8-

1999/05

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