HN58S256AT-20 HITACHI [Hitachi Semiconductor], HN58S256AT-20 Datasheet - Page 10
![no-image](/images/no-image-200.jpg)
HN58S256AT-20
Manufacturer Part Number
HN58S256AT-20
Description
256 k EEPROM (32-kword x 8-bit)
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet
1.HN58S256AT-20.pdf
(17 pages)
HN58S256A 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”.
Address
I/O6
WE
OE
CE
2. I/O6 ending state will vary.
3. See AS read characteristics.
4. Any address location can be used, but the address must be fixed.
Din
t
OEH
t
t
CE
OE
*3
*3
Dout
*1
Dout
t
WC
Dout
*2
Dout
*2
t
DW
*4
t
OES
Next mode