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TMS27PC020-25 Datasheet

  • TMS27PC020-25

  • READ-ONLY MEMORIES

  • 195.72KB

  • 15頁

  • TI

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TMS27C020 262144 BY 8-BIT UV ERASABLE
TMS27PC020 262144 BY 8-BIT
PROGRAMMABLE READ-ONLY MEMORIES
SMLS020C 鈥?NOVEMBER 1990 鈥?REVISED SEPTEMBER 1997
D
D
D
D
D
D
D
Organization . . . 262 144 by 8 Bits
Single 5-V Power Supply
Operationally Compatible With Existing
Megabit EPROMs
Industry Standard 32-Pin Dual-In-line
Package and 32-Lead Plastic Leaded Chip
Carrier
All Inputs / Outputs Fully TTL Compatible
鹵10%
V
CC
Tolerance
Max Access / Min Cycle Time
V
CC
鹵
10%
鈥?7C/ PC020-10
100 ns
鈥?7C/ PC020-12
120 ns
鈥?7C/ PC020-15
150 ns
鈥?7C/ PC020-20
200 ns
鈥?7C/ PC020-25
250 ns
8-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 Pins
No Pullup Resistors Required
Low Power Dissipation (V
CC
= 5.5 V)
鈥?Active . . . 165 mW Worst Case
鈥?Standby . . . 0.55 mW Worst Case
(CMOS-Input Levels)
Temperature Range Options
J PACKAGE
( TOP VIEW )
D
D
D
D
D
D
D
D
D
V
PP
A16
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
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
V
CC
PGM
A17
A14
A13
A8
A9
A11
G
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
TMS27PC020
FM PACKAGE
( TOP VIEW )
VCC
PGM
A16
VPP
A12
A15
A17
4
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
5
6
7
8
9
10
11
12
13
3 2 1 32 31 30
29
28
27
26
25
24
23
22
21
A14
A13
A8
A9
A11
G
A10
E
DQ7
14 15 16 17 18 19 20
DQ1
DQ2
GND
DQ3
DQ4
DQ5
DQ6
description
The TMS27C020 series are 262 144 by 8-bit
(2 097 152-bit), ultraviolet (UV) light erasable,
electrically programmable read-only memories
(EPROMs).
The TMS27PC020 series are one-time program-
mable (OTP) electrically programmable read-only
memories (PROMs).
PIN NOMENCLATURE
A0 鈥?A17
DQ0 鈥?DQ7
E
G
GND
PGM
VCC
VPP
Address Inputs
Inputs (programming) / Outputs
Chip Enable
Output Enable
Ground
Program
5-V Power Supply
13-V Power Supply 鈥?/div>
鈥?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.
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
1

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