
TMS27C512 65536 BY 8BIT UV ERASABLE
TMS27PC512 65536 BY 8BIT
PROGRAMMABLE READONLY MEMORIES
SMLS512G NOVEMBER 1985 REVISED SEPTEMBER 1997
1
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
D Organization ...65536 by 8 Bits
D Single 5-V Power Supply
D Pin Compatible With Existing 512K MOS
ROMs, PROMs, and EPROMs
D All Inputs/Outputs Fully TTL Compatible
D Max Access/Min Cycle Time
VCC ± 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
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
Standard TTL Loads
D Latchup Immunity of 250 mA on All Input
and Output Lines
D Low Power Dissipation ( VCC = 5.25 V )
Active . . . 158 mW Worst Case
Standby . . . 1.4 mW Worst Case
(CMOS Input Levels)
D Temperature Range Options
D 512K EPROM Available With MIL-STD-883C
Class B High Reliability Processing
(SMJ27C512)
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).
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.
32 1 32 31
14
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
430
15 16 17 18 19 20
PIN NOMENCLATURE
A0 A15
Address Inputs
E
Chip Enable/Power Down
DQ0 DQ7
Inputs (programming) / Outputs
G /VPP
13-V Programming Power Supply
GND
Ground
NC
No Internal Connection
NU
Make No External Connection
VCC
5-V Power Supply
J PACKAGE
( TOP VIEW )
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
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
VCC
A14
A13
A8
A9
A11
G /VPP
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
A8
A9
A11
NC
G /VPP
A10
E
DQ7
DQ6
A6
A5
A4
A3
A2
A1
A0
NC
DQ0
DQ1
DQ2
NU
DQ3
DQ4
A7
A12
A15
NU
V
A14
A13
FM PACKAGE
( TOP VIEW )
DQ5
CC
GND
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.
Copyright
1997, Texas Instruments Incorporated