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HT27C020 Datasheet

  • HT27C020

  • OTP CMOS 256Kx 8-Bit EPROM

  • 11頁

  • HOLTEK

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HT27C020
OTP CMOS 256K
脳
8-Bit EPROM
Features
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Operating voltage: +5.0V
Programming voltage
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V
PP
=12.5V
鹵
0.2V
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V
CC
=6.0V
鹵
0.2V
High-reliability CMOS technology
Latch-up immunity to 100mA from -1.0V to
V
CC
+1.0V
CMOS and TTL compatible I/O
Low power consumption
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Active: 30mA max.
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Standby: 1
碌
A typ.
256K
脳
8-bit organization
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Fast read access time: -70ns, -90ns
and -120ns
Fast programming algorithm
Programming time 75
碌
s typ.
Two line controls (OE and CE)
Standard product identification code
Package type
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32-pin DIP/SOP
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32-pin PLCC
Commercial temperature range
(0
擄
C to +70
擄
C)
General Description
The HT27C020 chip family is a low-power,
2048K (2,097,152) bit, +5V electrically one-time
programmable (OTP) read-only memories
(EPROM). Organized into 256K words with 8
bits per word, it features a fast single address
location programming, typically at 75
碌
s per
byte. Any byte can be accessed in less than
70ns/90ns/120ns with respect to Spec. This
eliminates the need for WAIT states in high-
performance microprocessor systems. The
HT27C020 has separate Output Enable (OE)
and Chip Enable (CE) controls which eliminate
bus contention issues.
Block Diagram
1
10th May 鈥?9

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