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ꢀ ꢁꢂ ꢃ ꢄ ꢕꢅꢆ ꢇ ꢃ ꢈ ꢆ ꢆ ꢉ ꢈ ꢊ ꢋ ꢌꢍ ꢊ ꢎꢀ
ꢕꢒꢖ ꢗ ꢒꢓꢁ ꢁ ꢓꢊꢔ ꢑ ꢒꢑꢓ ꢘꢍꢖ ꢙꢔꢋ ꢁ ꢑꢁ ꢖ ꢒ ꢎ ꢑꢂ
SMLS512G − NOVEMBER 1985 − REVISED SEPTEMBER 1997
J PACKAGE
(TOP VIEW)
D Organization . . . 65536 by 8 Bits
D Single 5-V Power Supply
D Pin Compatible With Existing 512K MOS
A15
A12
A7
A6
A5
A4
A3
A2
A1
V
CC
1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
ROMs, PROMs, and EPROMs
A14
A13
A8
2
D All Inputs/Outputs Fully TTL Compatible
3
4
D Max Access/Min Cycle Time
A9
5
V
10%
CC
A11
G/V
A10
E
6
’27C/PC512-10
’27C/PC512-12
’27C/PC512-15
’27C/PC512-20
’27C/PC512-25
100 ns
120 ns
150 ns
200 ns
250 ns
7
PP
8
9
A0
DQ7
DQ6
DQ5
DQ4
DQ3
10
11
12
13
14
DQ0
DQ1
DQ2
GND
D Power Saving CMOS Technology
D Very High-Speed SNAP! Pulse
Programming
D 3-State Output Buffers
D 400-mV Minimum DC Noise Immunity With
FM PACKAGE
(TOP VIEW)
Standard TTL Loads
D Latchup Immunity of 250 mA on All Input
and Output Lines
D Low Power Dissipation ( V
= 5.25 V )
CC
4
3 2 1 32 31 30
− Active . . . 158 mW Worst Case
− Standby . . . 1.4 mW Worst Case
(CMOS Input Levels)
5
6
7
8
9
29
A6
A5
A4
A3
A2
A1
A0
NC
DQ0
A8
A9
A11
28
27
D Temperature Range Options
26 NC
D 512K EPROM Available With MIL-STD-883C
Class B High Reliability Processing
(SMJ27C512)
G/V
A10
E
DQ7
DQ6
25
24
23
22
21
PP
10
11
12
13
description
14 15 16 17 18 19 20
The TMS27C512 series are 65536 by 8-bit
(524288-bit), ultraviolet (UV) light erasable,
electrically programmable read-only memories
(EPROMs).
PIN NOMENCLATURE
The TMS27PC512 series are 65536 by 8-bit
(524288-bit), one-time programmable (OTP)
electrically programmable read-only memories
(PROMs).
A0−A15
E
Address Inputs
Chip Enable/Power Down
DQ0−DQ7
Inputs (programming)/Outputs
13-V Programming Power Supply
Ground
G/V
PP
GND
NC
No Internal Connection
Make No External Connection
5-V Power Supply
NU
V
CC
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.
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Copyright 1997, Texas Instruments Incorporated
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1
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