Programmable ROM
TMS27C128 131 072-BIT UV ERASABLE PROGRAMMABLE READ-ONLY MEMORY TMS27PC128 131 072-BIT PROGRAMMABLE READ-ONLY MEMORY
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Description
TMS27C128 131 072-BIT UV ERASABLE PROGRAMMABLE READ-ONLY MEMORY TMS27PC128 131 072-BIT PROGRAMMABLE READ-ONLY MEMORY
This Data Sheet is Applicable to All TMS27C128s and TMS27PC128s Symbolized with Code “B” as Described on Page 12.
Organization . . . 16K × 8
Single 5-V Power Supply
Pin Compatible With Existing 128K MOS
ROMs, PROMs, and EPROMs
All Inputs/Outputs Fully TTL Compatible
Max Access/Min Cycle Times
VCC ± 10%
’27C128-12 ’27C/PC128-15 ’27C/PC128-20 ’27C/PC128-25
120 ns 150 ns 200 ns 250 ns
Power Saving CMOS Technology
Very High-Speed SNAP! Pulse Programming
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
Low Power Dissipation ( VCC = 5.25 V )
– Active . . . 158 mW Worst Case – Standby . . . 1.4 mW Worst Case
(CMOS Input Levels)
PEP4 Version Available With 168-Hour
Burn-In and Choices of Operating
Temperature Ranges
128K EPROM Available With MIL-STD-883C
Class B High-Reliability Processing
(SMJ27C128)
description
The TMS27C128 series are 131 072-bit,
ultraviolet-light
erasable,
electrically
programmable read-only memories.
The TMS27PC128 series are 131 072-bit, one time electrically programmable read-only memories.
SMLS128E–OCTOBER 1984–REVISED JANUARY 1993
J AND N PACKAGES (TOP VIEW)
VPP 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
28 VCC 27 PGM 26 A13 25 A8 24 A9 23 A11 22 G 21 A10 20 E 19 DQ7 18 ...
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