HN58S65A Datasheet, PDF (12/18 Pages) Hitachi Semiconductor – 64 k EEPROM (8-kword x 8-bit) Ready/Busy function

HN58S65A Series
Toggle Bit
This device provide another function to determine the internal programming cycle. If the EEPROM is
set to read mode during the internal programming cycle, I/O6 will charge from “1” to “0” (toggling) for
each read. When the internal programming cycle is finished, toggling of I/O6 will stop and the device
can be accessible for next read or program.
Toggle Bit Waveform
Notes: 1. I/O6 beginning state is “1”.
2. I/O6 ending state will vary.
3. See AC read characteristics.
4. Any address location can be used, but the address must be fixed.
Address
CE
t_CE ^*3
Next mode
*4
WE
OE
I/O6
t_OEH
Din
t_OE^*3
*1
Dout
Dout
t_WC
*2
Dout
t_OES
*2
Dout
t_DW