PRELIMINARY
SPECIFICATION
EEPROM
AS8ERLC128K32
Austin Semiconductor, Inc.
TOGGLE BIT
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
4Next Mode
Address
3
tCE
CE\
WE\
3
tOE
OE\
tOES
tOEH
1
2
2
Dout
Dout
Dout
Din
I/O6
Dout
tDW
tWC
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 PROTECTIONTIMINGWAVEFORM (In protection mode)
VCC
CE\
WE\
tBLC
tBLC
tBLC
tWC
Address
5555
AA
AAAA or
2AAA
55
5555
A0
Write Address*
Write Data
Data (each byte)
* During this write cycle, data is physically written to the address provided.
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
AS8ERLC128K32
Rev. 1.9 06/06
9
AUSTIN [ AUSTIN SEMICONDUCTOR ]
