Holtek Semiconductor HT27LC020
The HT27LC020 chip family is a low-power, 2048K (2,097,152) bit, +3.3V electrically onetime programmable (OTP) read-only memories (EPROM). This eliminates the need for WAIT states in high-performance microprocessor systems. The HT27LC020 has separate Output Enable (OE) and Chip Enable (CE) controls which eliminate bus contention issues.| Part No. | HT27LC020 |
|---|---|
| Datasheet | HT27LC020 Download |
| Manufacturer |  Holtek Semiconductor |
| Description | OTP CMOS 256Kx 8-Bit EPROM |
| Buy | Stock & Price |
FEATURES
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● 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: 1µA typ. 256K×8-bit organization
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● Fast read access time: -120ns Fast programming algorithm Programming time 75µs typ. Commercial and industrial temperature range Two line controls (OE and CE) Standard product identification code Package type – 32-pin DIP/SOP – 32-pin PLCC Commercial temperature ranges (0°C to +70°C)
GENERAL DESCRIPTION
Organized into 256K words with 8 bits per word, it features a fast single address location programming, typically at 75µs per byte. Any byte can be accessed in less than 120ns with respect to Spec. Block Diagram 1 7th May ’99 HT27LC020 Pin Assignment PinDESCRIPTION
Pin Name A0~A17 DQ0~DQ7 CE OE PGM NC VPP I/O/C/P I I/O C C C — P Address inputs Data inputs/outputs Chip enable Out...
