HN58V65A Datasheet, PDF (17/27 Pages) Hitachi Semiconductor – 64 k EEPROM (8-kword x 8-bit) Ready/Busy function, RES function (HN58V66A)

HN58V65A Series, HN58V66A 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 begining 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