HT27C512
CMOS 64K´8-Bit OTP 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
·
64K´8-bit organization
·
Fast read access time: 70ns
·
Fast programming algorithm
·
Programming time 75ms typ.
·
Two line control (OE & CE)
·
Standard product identification code
·
Commercial temperature range (0°C to +70°C)
·
28-pin DIP/SOP, 32-pin PLCC package
V
CC
+1.0V
·
CMOS and TTL compatible I/O
·
Low power consumption
-
Active: 30mA max.
-
Standby: 1mA typ.
General Description
The HT27C512 chip family is a low-power, 512K bit, +5V
electrically one-time programmable (OTP) read-only
memories (EPROM). Organized into 64K words with 8
bits per word, it features a fast single address location
programming, typically at 75ms per byte. Any byte can
be accessed in less than 70ns with respect to Spec. This
eliminates the need for WAIT states in
high-performance microprocessor systems. The
HT27C512 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
V S S
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. 1.40
1
December 8, 2003
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
