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HT27C020 Datasheet(PDF) 1 Page - Holtek Semiconductor Inc

Part # HT27C020
Description  OTP CMOS 256Kx 8-Bit EPROM
PDF  11 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT27C020 Datasheet(HTML) 1 Page - Holtek Semiconductor Inc

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HT27C020
OTP CMOS 256K
×8-Bit EPROM
Block Diagram
Features
•
Operating voltage: +5.0V
•
Programming voltage
–
VPP=12.5V
±0.2V
–
VCC=6.0V
±0.2V
•
High-reliability CMOS technology
•
Latch-up immunity to 100mA from -1.0V to
VCC+1.0V
•
CMOS and TTL compatible I/O
•
Low power consumption
–
Active: 30mA max.
–
Standby: 1
µA typ.
•
256K
×8-bit organization
•
Fast read access time: -70ns, -90ns
and -120ns
•
Fast programming algorithm
•
Programming time 75
µs typ.
•
Two line controls (OE and CE)
•
Standard product identification code
•
Package type
–
32-pin DIP/SOP
–
32-pin PLCC
•
Commercial temperature range
(0
°C to +70°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
µs 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.
1
10th May ’99


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