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HT27LC040 Datasheet(PDF) 1 Page - Holtek Semiconductor Inc

Part No. HT27LC040
Description  CMOS 512K 8-Bit OTP EPROM
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Maker  HOLTEK [Holtek Semiconductor Inc]
Homepage  http://www.holtek.com
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HT27LC040 Datasheet(HTML) 1 Page - Holtek Semiconductor Inc

 
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HT27LC040
CMOS 512K´8-Bit OTP EPROM
Block Diagram
Rev. 1.30
1
December 8, 2003
Features
· Operating voltage: +3.3V
· Programming voltage
- VPP=12.5V±0.2V
- VCC=6.0V±0.2V
· High-reliability CMOS technology
· Latch-up immunity to 100mA from -1.0V to
VCC+1.0V
· CMOS and TTL compatible I/O
· Low power consumption
- Active: 15mA max.
- Standby: 1mA typ.
· 512K´8-bits organization
· Fast read access time: 90ns
· Fast programming algorithm
· Programming time 75ms typ.
· Two line controls (OE and CE)
· Standard product identification code
· Commercial temperature range (0°Cto+70°C)
· 32-pin DIP/SOP/TSOP/PLCC package
General Description
The HT27LC040 chip family is a low-power, 4096K
(4,194,304) bits, +3.3V electrically one-time program-
mable (OTP) read-only memories (EPROM). Organized
into 512K words with 8 bits per word, it features a fast
single address location programming, typically at 75
ms
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 HT27LC040 has separate Output Enable (OE) and
Chip Enable (CE) controls which eliminate bus conten-
tion issues.
X - D e c o d e r
Y - D e c o d e r
C e l l A r r a y
S A C K T
&
O u t p u t B u f f e r
C o l u m n
A d d r e s s
R o w
A d d r e s s
Y - G a t i n g
V C C
D Q 0 ~ D Q 7
V S S
C E
O E
V P P
C E & O E &
T E S T
C o n t r o l L o g i c


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