HN58C256A Datasheet, PDF (15/25 Pages) Hitachi Semiconductor – 256k EEPROM (32-kword x 8-bit) Ready/Busy and RES function (HN58C257A)

HN58C256A Series, HN58C257A Series
Software Data Protection Timing Waveform (1) (in protection mode)
V_CC
CE
WE
Address
Data
5555
AA
2AAA
55
t_BLC
t_WC
5555 Write address
A0
Write data
Software Data Protection Timing Waveform (2) (in non-protection mode)
V_CC
t_WC
Normal active
mode
CE
WE
Address
Data
5555 2AAA 5555 5555 2AAA 5555
AA 55 80 AA 55 20
15