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ETC - HT23C256

Numéro de référence 23C256
Description HT23C256
Fabricant ETC 
Logo ETC 





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23C256 fiche technique
HT23C256
CMOS 32K×8-Bit Mask ROM
Features
Operating voltage 2.7V~5.5V
Low power consumption
Operation: 25mA max. (VCC=5V)
10mA max. (VCC=3V)
Standby: 30µA max. (VCC=5V)
10µA max. (VCC=3V)
Access time:150ns max. (VCC=5V)
250ns max. (VCC=3V)
General Description
The HT23C256 is a read-only memory with
high performance CMOS storage device whose
256K of memory is arranged into 32768 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-
32768×8 bits of mask ROM
Mask options: chip enable CE/CE/OE1/OE1 and
output enable OE/OE/NC
TTL compatible inputs and outputs
Tristate outputs
Fully static operation
Package type: 28-pin DIP/SOP
essors, but also eliminates bus contention in
multiple bus microprocessor systems. An addi-
tional feature of the HT23C256 is its ability to
enter the standby mode whenever the chip en-
able (CE/CE) is inactive, thus reducing current
consumption to below 30µA. The combination of
these functions makes the chip suitable for high
density low power memory applications.
Block Diagram
1 24th Aug ’98

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