HT23C512(1998) Ver la hoja de datos (PDF) - Holtek Semiconductor
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HT23C512 Datasheet PDF : 8 Pages
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HT23C512
CMOS 64K×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)
• 65536×8 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
General Description
The HT23C512 is a read-only memory with high
performance CMOS storage device whose 512K
of memory is arranged into 65536 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 microproces-
sors, but also eliminates bus contention in mul-
tiple bus microprocessor systems. An additional
feature of the HT23C512 is its ability to enter
the standby mode whenever the chip enable
(CE/CE) is inactive, thus reducing current con-
sumption 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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