HT27LC512
CMOS 64K´8-Bit OTP 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
·
Fast programming algorithm
·
Read access time: 90ns
·
Programming time 75ms 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
·
Commercial temperature ranges (0°C to +70°C)
·
28-pin DIP/SOP/TSOP, 32-pin PLCC package
·
Low power consumption
-
Active: 15mA max.
-
Standby: 1mA typ.
·
Fast read access time: 120ns
·
CMOS and TTL compatible I/O
·
Commercial and industrial temperature range
General Description
The HT27LC512 chip family is a low-power, 512K bit,
+3.3V electrically one-time programmable (OTP)
read-only memories (EPROM). Organized into 64K
words with 8 bits per word, it features a fast single ad-
dress location programming, typically at 75ms per byte.
Any byte can be accessed in less than 90ns 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 is-
sues.
Block Diagram
R o w
A d d re s s
C o lu m n
A d d re s s
C E
O E /V P P
X -D e c o d e r
C e ll A r r a y
V C C
Y -D e c o d e r
Y - G a tin g
G N D
C E & O E &
P G M & T E S T
C o n tr o l L o g ic
S A C K T
&
O u tp u t B u ffe r
D Q 0 ~ D Q 7
Rev. 1.10
1
February 6, 2002
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
