HT27C4096
OTP CMOS 256K´16-Bit EPROM
Features
·
Operating voltage: +5.0V
·
Programming voltage
-
V
PP
=12.5V±0.2V
-
V
CC
=6.0V±0.2V
·
256K´16-bits organization
·
Fast read access time: 70ns
·
Fast programming algorithm
·
Programming time 75ms typ.
·
Two line controls (OE and CE)
·
Standard product identification code
·
Commercial temperature range
·
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: 1mA typ.
(0°C to +70°C)
·
40-pin plastic DIP package
44-pin PLCC package
General Description
The HT27C4096 chip family is a low-power, 4096K
(4,194,304) bits, +5V electrically one-time programma-
ble (OTP) read-only memories (EPROM). Organized
into 256K words with 16 bits per word, it features a fast
single address location programming, typically at 75ms
per word. Any word can be accessed in less than 70ns
with respect to spec. This eliminates the need for WAIT
states in high-performance microprocessor systems.
The HT27C4096 has separate Output Enable (OE) and
Chip Enable (CE) controls which eliminate bus conten-
tion issues.
Block Diagram
R o w
A d d re s s
C o lu m n
A d d re s s
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
V P P
C E
O E
C E & O E &
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 1 5
Rev. 1.00
1
August 6, 2001
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
