HT27LC512
OTP CMOS 64K
×
8-Bit EPROM
Features
•
•
•
•
•
•
•
•
64K
×
8-bit organization
Single +3.3V power supply
Programming voltage
–
V
PP
=12.2V
±
0.2V
–
V
CC
=5.8V
±
0.2V
Low power consumption
–
Active: 15mA max.
–
Standby: 1
µ
A typ.
Fast read access time: 120ns
CMOS and TTL compatible I/O
Commercial and industrial temperature range
Fast programming algorithm
•
•
•
•
•
•
•
•
Read access time: –120ns
Programming time 75
µ
s typ.
High-reliability CMOS technology
Latch-up immunity to 100mA from -1.0V to
V
CC
+1.0V
Two line control (OE & CE)
Standard product identification code
Package type
–
28-pin DIP/SOP
–
32-pin PLCC
Commercial temperature ranges
(0
°
C to +70
°
C)
General Description
The HT27LC512 chip family is a low-power,
512K bit, +3.3V electrically one-time pro-
grammable (OTP ) read-only memories
(EPROM). Organized into 64K words with 8
bits per word, it features a fast single address
location programming, typically at 75
µ
s per
byte. Any byte can be accessed in less than 120ns
with respect to Spec. This eliminates the need for
WAIT states in high-performance microprocessor
systems. The HT27LC512 has separate Output Enable
(OE) and Chip Enable (CE) controls which
eliminate bus contention issues.
Block Diagram
1
6th May ’99