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HT23C020 Datasheet

  • HT23C020

  • CMOS 256Kx 8-Bit Mask ROM

  • 264.51KB

  • 8頁(yè)

  • HOLTEK

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HT23C020
CMOS 256K
脳
8-Bit Mask ROM
Features
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Operating voltage 2.7V~5.5V
Low power consumption
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Operation: 25mA max. (V
CC
=5V)
10mA max. (V
CC
=3V)
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Standby: 30
碌
A max. (V
CC
=5V)
10
碌
A max. (V
CC
=3V)
Access time:150ns max. (V
CC
=5V)
250ns max. (V
CC
=3V)
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262144
脳
8 bits of mask ROM
Mask options: chip enable CE/CE/OE1/OE1,
CE1/CE1/OE2/OE2/NC and output enable
OE/OE/NC
TTL compatible inputs and outputs
Tristate outputs
Fully static operation
Package type: 32-pin DIP/SOP/PLCC
General Description
The HT23C020 is a read-only memory with
high performance CMOS storage device whose
2048K of memory is arranged into 262144
words by 8 bits.
For application flexibility, the chip enable and
output enable control pins can be selected as
active high or active low. This flexibility not
only allows easy interface with most microproc-
essors, but also eliminates bus contention in
multiple bus microprocessor systems. An addi-
tional feature of the HT23C020 is its ability to
enter the standby mode whenever the chip en-
able (CE/CE or CE1/CE1) is inactive, thus re-
ducing current consumption to below 30
碌
A. The
combination of these functions make the chip
suitable for high density low power memory
applications.
Block Diagram
1
21st Aug 鈥?8

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