PRELIMINARY
SPECIFICATION
Austin Semiconductor, Inc.
TOGGLE BIT
EEPROM
AS8ERLC128K32
This device provides 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 pro-
gramming cycle is finished, toggling of I/O6 will stop and the device can be accessible for next read or program.
TOGGLE BIT WAVEFORM
Address
CE\
t
CE3
4
Next Mode
WE\
OE\
t
OEH
I/O6
Din
Dout
1
t
OE3
t
OES
Dout
Dout
2
Dout
2
t
DW
t
WC
NOTES:
1) I/O6 beginning state is "1".
2) I/O6 ending state will vary.
3) See AC read characteristics.
4) Any locations can be used, but the address must be fixed.
SOFTWARE DATA PROTECTION TIMING WAVEFORM (In protection mode)
V
CC
CE\
WE\
Address
Data (each byte)
5555
AA
AAAA or
2AAA
55
5555
A0
* During this write cycle, data is physically written to the address provided.
AS8ERLC128K32
Rev. 1.9 06/06
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
9
{
Write Data
t
BLC
t
BLC
t
BLC
t
WC
Write Address*
AUSTIN [ AUSTIN SEMICONDUCTOR ]
