HN58C257A function equivalent, 256k eeprom (32-kword x 8-bit) ready/busy and res function.
* Single 5 V supply: 5 V ±10%
* Access time: 85 ns/100 ns (max)
* Power dissipation
Active: 20 mW/MHz, (typ) Standby: 110 µW (max)
* On-chip latches: .
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