TMS27C512 65536 BY 8-BIT UV ERASABLE
TMS27PC512 65536 BY 8-BIT
PROGRAMMABLE READ-ONLY MEMORIES
SMLS512G – NOVEMBER 1985 – REVISED SEPTEMBER 1997
D
D
D
D
D
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D
D
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D
D
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D
Organization . . . 65 536 by 8 Bits
Single 5-V Power Supply
Pin Compatible With Existing 512K MOS
ROMs, PROMs, and EPROMs
All Inputs/Outputs Fully TTL Compatible
Max Access/Min Cycle Time
V
CC
±
10%
’27C/PC512-10
100 ns
’27C/PC512-12
120 ns
’27C/PC512-15
150 ns
’27C/PC512-20
200 ns
’27C/PC512-25
250 ns
Power Saving CMOS Technology
Very High-Speed SNAP! Pulse
Programming
3-State Output Buffers
400-mV Minimum DC Noise Immunity With
Standard TTL Loads
Latchup Immunity of 250 mA on All Input
and Output Lines
Low Power Dissipation ( V
CC
= 5.25 V )
– Active . . . 158 mW Worst Case
– Standby . . . 1.4 mW Worst Case
(CMOS Input Levels)
Temperature Range Options
512K EPROM Available With MIL-STD-883C
Class B High Reliability Processing
(SMJ27C512)
J PACKAGE
( TOP VIEW )
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
CC
A14
A13
A8
A9
A11
G / V
PP
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
FM PACKAGE
( TOP VIEW )
description
The TMS27C512 series are 65 536 by 8-bit
(524 288-bit), ultraviolet (UV) light erasable,
electrically programmable read-only memories
(EPROMs).
The TMS27PC512 series are 65 536 by 8-bit
(524 288-bit), one-time programmable (OTP)
electrically programmable read-only memories
(PROMs).
A6
A5
A4
A3
A2
A1
A0
NC
DQ0
A7
A12
A15
NU
VCC
A14
A13
4
5
6
7
8
9
10
11
12
13
14 15 16 17 18 19 20
3 2 1 32 31 30
29
28
27
26
25
24
23
22
21
A8
A9
A11
NC
G / V
PP
A10
E
DQ7
DQ6
PIN NOMENCLATURE
A0 – A15
E
DQ0 – DQ7
G / VPP
GND
NC
NU
VCC
Address Inputs
Chip Enable/Power Down
Inputs (programming) / Outputs
13-V Programming Power Supply
Ground
No Internal Connection
Make No External Connection
5-V Power Supply
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright
©
1997, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 1443
•
HOUSTON, TEXAS 77251–1443
DQ1
DQ2
GND
NU
DQ3
DQ4
DQ5
1
TI [ TEXAS INSTRUMENTS ]
