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TMS27C240 Datasheet

  • TMS27C240

  • 16-BIT PROGRAMMABLE READ-ONLY MEMORIES

  • 192.90KB

  • 15頁

  • TI

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TMS27C240 262144 BY 16-BIT UV ERASABLE
TMS27PC240 262144 BY 16-BIT
PROGRAMMABLE READ-ONLY MEMORIES
SMLS240D鈥?NOVEMBER 1990 鈥?REVISED SEPTEMBER 1997
D
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Organization . . . 262 144 by 16 Bits
Single 5-V Power Supply
All Inputs / Outputs Fully TTL Compatible
Static Operations (No Clocks, No Refresh)
Max Access / Min Cycle Time
V
CC
鹵
10%
鈥?7C/ PC240-10
100 ns
鈥?7C/ PC240-12
120 ns
鈥?7C/ PC240-15
150 ns
16-Bit Output For Use in
Microprocessor-Based Systems
Very High Speed SNAP! Pulse
Programming
Power-Saving CMOS Technology
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
No Pullup Resistors Required
Low Power Dissipation ( V
CC
= 5.5 V )
鈥?Active . . . 275 mW Worst Case
鈥?Standby . . . 0.55 mW Worst Case
(CMOS-Input Levels)
Temperature Range Options
TMS27PC240 FN PACKAGE
( TOP VIEW )
DQ13
DQ14
DQ15
E
V PP
NC
V CC
A17
A16
A15
A14
6 5
4
3
2 1 44 43 42 41 40
39
38
37
36
35
34
33
32
31
30
29
18 19 20 21 22 23 24 25 26 27 28
DQ12
DQ11
DQ10
DQ9
DQ8
GND鈥?/div>
NC
DQ7
DQ6
DQ5
DQ4
7
8
9
10
11
12
13
14
15
16
17
A13
A12
A11
A10
A9
GND鈥?/div>
NC
A8
A7
A6
A5
A0 鈥?A17
DQ0 鈥?DQ15
E
G
GND
NC
VCC
VPP
鈥?Pins 11 and 30 (J package) and pins 12 and 34
(FN package) must be connected externally to
ground.
鈥?Only in program mode
description
The TMS27C240 series are 262 144 by 16-bit (4 194 304-bit), ultraviolet-light erasable, electrically
programmable read-only memories (EPROMs).
The TMS27PC240 series are 262 144 by 16-bit (4 194 304-bit), one-time programmable (OTP) electrically
programmable read-only memories (PROMs).
These devices are fabricated using power-saving CMOS technology for high speed and simple interface with
MOS and bipolar circuits. All inputs (including program data inputs) can be driven by Series 74 TTL circuits
without the use of external pull-up resistors. Each output can drive one Series 74 TTL circuit without external
resistors.
The TMS27C240 EPROM is offered in a dual-in-line ceramic package (J suffix) designed for insertion in
mounting hole rows on 15,2-mm (600-mil) centers. The TMS27C240 is offered with two choices of temperature
ranges of 0擄C to 70擄C (JL suffix) and 鈥?40擄C to 85擄C (JE suffix). See Table 1.
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
漏
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
鈥?/div>
HOUSTON, TEXAS 77251鈥?443
DQ3
DQ2
DQ1
DQ0
G
NC
A0
A1
A2
A3
A4
PIN NOMENCLATURE
Address Inputs
Inputs (programming) / Outputs
Chip Enable
Output Enable
Ground
No Connection
5-V Supply
13-V Power Supply 鈥?/div>
1

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