UVEPROM
SMJ27C512
AS27C512
Austin Semiconductor, Inc.
OPERATION
The seven modes of operation for the SMJ27C512 are listed in Table 1. The read mode requires a single 5V supply. All
inputs are TTL level except for VPP during programming (13V for SNAP! Pulse), and 12V on A9 for signature mode.
TABLE 1. OPERATION MODES
MODE*
FUNCTION
OUTPUT
DISABLE
PROGRAM
INHIBIT
SIGNATURE MODE
(PINS)
READ
STANDBY PROGRAMMING VERIFY
VIL
VIL
E\
G\ /VPP
VCC
A9
VIL
VIL
VCC
X
VIL
VIH
VCC
X
VIH
X
VIL
VPP
VCC
X
VIL
VIL
VCC
X
VIH
VPP
VCC
X
VCC
VCC
X
VID
VIL
VID
VIH
A0
X
X
X
X
X
X
CODE**
DQ0-DQ7
Data Out
High-Z
High-Z
Data In
Data Out
High-Z
MFG
97h
DEVICE
85h
NOTES:
* X can be VIL or VIH
** Die is Texas Instruments. User can program on benchtop programmer by selecting either TMS27C512 or SMJ27C512 from the device
type selection menu.
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
SMJ27C512/AS27C512
Rev. 2.5 10/03
3
MICROSS [ MICROSS COMPONENTS ]
