smj27c512 Austin Semiconductor, Inc., smj27c512 Datasheet - Page 2

• Manufacturer Part Number: smj27c512
• Description: 512k Uveprom Uv Erasable Programmable Read-only Memory
• Manufacturer: Austin Semiconductor, Inc.

* This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
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 V
* X can be V
SMJ27512
Rev. 1.1 06/05
(11-13, 15-19)
G\ /V
FUNCTION
DQ0-DQ7
V
A9 (24)
A0 (10)
(PINS)
E\ (20)
CC
PP
(28)
(22)
IL
or V
IH
Data Out
READ
V
V
V
X
X
CC
IL
IL
G\ /V
Austin Semiconductor, Inc.
FUNCTIONAL BLOCK DIAGRAM*
DISABLE
A10
A11
A12
A13
A14
A15
OUTPUT
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
High-Z
PP
E\
V
V
V
PP
X
X
CC
IH
IL
during programming (13V for SNAP! Pulse), and 12V on A9 for signature mode.
TABLE 1. OPERATION MODES
22
24
21
23
2
27
1
20
10
8
5
25
26
9
7
6
4
3
STANDBY PROGRAMMING VERIFY
High-Z
V
V
X
X
X
CC
IH
15
[PWR DWN]
0
&
EPROM 65,536 x 8
EN
A
Data In
2
V
65,535
V
V
X
X
PP
CC
IL
0
MODE*
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
Data Out
A
A
A
A
A
A
A
A
V
V
V
X
X
CC
IL
IL
PROGRAM
INHIBIT
High-Z
11
12
13
15
16
18
19
17
V
V
V
X
X
CC
PP
IH
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
UVEPR
UVEPR
UVEPR OM
UVEPR
UVEPR
SMJ27C512
SIGNATURE MODE
MFG
97h
V
V
ID
IL
CODE
V
V
V
CC
IL
IL
DEVICE
OM
OM
OM
OM
85h
V
V
ID
IH