TMS27C040 Datasheet, PDF (1/12 Pages) Texas Instruments – PROGRAMMABLE READ-ONLY MEMORY

D Organization . . . 524288 by 8 Bits
D Single 5-V Power Supply
D Industry Standard 32-Pin Dual In-Line
Package and 32-Lead Plastic Leaded Chip
Carrier
D All Inputs / Outputs Fully TTL Compatible
D Static Operation (No Clocks, No Refresh)
D Max Access / Min Cycle Time
V_CC ± 10%
’27C/ PC040-10 100 ns
’27C/ PC040-12 120 ns
’27C/ PC040-15 150 ns
D 8-Bit Output For Use in
Microprocessor-Based Systems
D Power-Saving CMOS Technology
D 3-State Output Buffers
D 400-mV Assured DC Noise Immunity With
Standard TTL Loads
D Latchup Immunity of 250 mA on All Input
and Output Pins
D No Pullup Resistors Required
D Low Power Dissipation (V_CC = 5.5 V)
– Active . . . 275 mW Worst Case
– Standby . . . 0.55 mW Worst Cas E
(CMOS-Input Levels)
D Temperature Range Options
description
The TMS27C040 devices are 524 288 by 8-bit
(4 194 304-bit), ultraviolet (UV) light erasable,
electrically programmable read-only memories
(EPROMs).
The TMS27PC040 devices are 524 288 by 8-bit
(4 194 304-bit), one-time programmable (OTP)
electrically programmable read-only memories
(PROMs).
These devices are fabricated using CMOS
technology for high speed and simple interface
with MOS and bipolar circuits. All inputs ( including
program data inputs) can be driven by the Series
74 TTL circuits. Each output can drive one Series
74 TTL circuit without external resistors.
TMS27C040 524288 BY 8-BIT UV ERASABLE
TMS27PC040 524288 BY 8-BIT
PROGRAMMABLE READ-ONLY MEMORY
SMLS040F – NOVEMBER 1990 – REVISED SEPTEMBER 1997
TMS27C040
J PACKAGE
( TOP VIEW )
V_{PP 1}
A16 ₂
A15 ₃
A12 ₄
A7 ₅
A6 6
A5 7
A4 8
A3 9
A2 10
A1 11
A0 12
DQ0 13
DQ1 14
DQ2 15
GND 16
32 ^V_CC
31 ^A18
30 ^A17
29 ^A14
28 ^A13
27 ^A8
26 A9
25 A11
24 G
23 A10
22 E
21 DQ7
20 DQ6
19 DQ5
18 DQ4
17 DQ3
TMS27PC040
FM PACKAGE
( TOP VIEW )
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
4 3 2 1 32 31 30
5
29
6
28
7
27
8
26
9
25
10
24
11
23
12
22
13
21
14 15 16 17 18 19 20
A14
A13
A8
A9
A11
G
A10
E
DQ7
PIN NOMENCLATURE
A0 – A18
DQ0 – DQ7
E
G
GND
VCC
VPP
Address Inputs
Inputs (programming) / Outputs
Chip Enable
Output Enable
Ground
5-V Supply
13-V Power Supply†
† _{Only in program mode.}
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.
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
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443
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