Holtek Semiconductor HT23C020
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 microprocessors, but also eliminates bus contention in multiple bus microprocessor systems.| Part No. | HT23C020 |
|---|---|
| Datasheet | HT23C020 Download |
| Manufacturer |  Holtek Semiconductor |
| Description | CMOS 256Kx 8-Bit Mask ROM |
| Buy | Stock & Price |
FEATURES
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● Operating voltage 2.7V~5.5V Low power consumption – Operation: 25mA max. (V CC=5V) 10mA max. (VCC=3V) – Standby: 30µA max. (VCC=5V) 10µA max. (VCC=3V) Access time:150ns max. (VCC=5V) 250ns max. (VCC=3V)
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● 262144×8 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
An additional feature of the HT23C020 is its ability to enter the standby mode whenever the chip enable (CE/CE or CE1/CE1) is inactive, thus reducing current consumption to below 30µA. The combination of these functions make the chip suitable for high density low power memory applications. Block Diagram 1 21st Aug ’98 HT23C020 Pin Assignment PinDESCRIPTION
Pin Name A0~A17 D0~D7 CE/CE/OE1/OE1 CE1/CE1/OE2/OE2/NC VSS VCC OE/OE/NC NC I/O I O I I I I I — Address inputs Data outputsDESCRIPTION
Chip enable, output enable input C...
