SMJ27C512 Datasheet, PDF (2/11 Pages) Austin Semiconductor – UV Erasable Programmable Read-Only Memory

Austin Semiconductor, Inc.
UVEPROM
SMJ27C512
FUNCTIONAL BLOCK DIAGRAM*
A0 ¹⁰
A1
A2
A3
9
8
7
A4
A5
A6
6
5
4
A7
A8
A9
3
25
24
21
A10
A11
A12
A13
A14
A15
23
2
26
27
1
E\ ²⁰
22
G\ /V_PP
EPROM 65,536 x 8
0
A
A
A
A0
65,535
A
A
A
A
A
15
[PWR DWN]
&
EN
11
12
13
15
16
17
18
19
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
* 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_PP during programming (13V for SNAP! Pulse), and 12V on A9 for signature mode.
TABLE 1. OPERATION MODES
FUNCTION
(PINS)
MODE*
READ ^OUTPUT STANDBY PROGRAMMING VERIFY ^PROGRAM SIGNATURE MODE
DISABLE
INHIBIT
E\ (20)
V_IL
V_IL
V_IH
V_IL
V_IL
V_IH
V_IL
G\ /V_PP (22)
V_IL
V_IH
X
V_PP
V_IL
V_PP
V_IL
V_CC (28)
V_CC
V_CC
V_CC
V_CC
V_CC
V_CC
V_CC
A9 (24)
X
X
X
X
X
X
V_ID
V_ID
A0 (10)
X
X
DQ0-DQ7
(11-13, 15-19)
Data Out
High-Z
X
High-Z
X
Data In
X
X
Data Out High-Z
V_IL
V_IH
CODE
MFG DEVICE
97h
85h
* X can be V_IL or V_IH
SMJ27512
Rev. 1.0 9/01
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
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