HT27C512
OTP CMOS 64K
×
8-Bit EPROM
Features
•
•
•
•
•
•
Operating voltage: +5.0V
Programming voltage
–
V
PP
=12.2V
±
0.2V
–
V
CC
=5.8V
±
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
–
Active: 30mA max.
–
Standby: 1
µ
A typ.
•
•
•
•
•
•
•
•
64K
×
8-bit organization
Fast read access time: 70ns, 90ns and 120ns
Fast programming algorithm
Programming time 75
µ
s typ.
Two line control (OE & CE)
Standard product identification code
Package type
–
28-pin DIP/SOP
–
32-pin PLCC
Commercial temperature range
(0
°
C to +70
°
C)
General Description
The HT27C512 chip family is a low-power,
512K bit, +5V electrically one-time programma-
ble (OTP) read-only memories (EPROM). Or-
ganized into 64K words with 8 bits per word, it
features a fast single address location program-
ming, typically at 75
µ
s per byte. Any byte can
be accessed in less than 70ns/90ns with respect
to Spec. This eliminates the need for WAIT
states in high-performance microprocessor sys-
tems. The HT27C512 has separate Output En-
able (OE) and Chip Enable (CE) controls which
eliminate bus contention issues.
Block Diagram
1
6th May ’99
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
