Holtek Semiconductor HT27LC512
The HT27LC512 chip family is a low-power, 512K bit, +3.3V electrically one-time programmable (OTP) read-only memories (EPROM). This eliminates the need for WAIT states in high-performance microprocessor systems. The HT27LC512 has separate Output Enable (OE) and Chip Enable (CE) controls which eliminate bus contention issues.| Part No. | HT27LC512 |
|---|---|
| Datasheet | HT27LC512 Download |
| Manufacturer |  Holtek Semiconductor |
| Description | CMOS 64K x 8-Bit OTP EPROM |
| Buy | Stock & Price |
FEATURES
● 64K´8-bit organization● Single +3.3V power supply
● Programming voltage - VPP=12.2V±0.2V - VCC=5.8V±0.2V
● Low power consumption - Active: 15mA max. - Standby: 1mA typ.
● Fast read access time: 120ns
● CMOS and TTL compatible I/O
● Commercial and industrial temperature range
● Fast programming algorithm
● Read access time: 90ns
● Programming time 75ms typ.
● High-reliability CMOS technology
● Latch-up immunity to 100mA from -1.0V to VCC+1.0V
● Two line control (OE & CE)
● Standard product identification code
● Commercial temperature ranges (0°C to +70°C)
● 28-pin DIP/SOP/TSOP, 32-pin PLCC package
GENERAL DESCRIPTION
Organized into 64K words with 8 bits per word, it features a fast single address location programming, typically at 75ms per byte. Any byte can be accessed in less than 90ns with respect to Spec. Block Diagram R ow A d d re s s C o lu m n A d d re s s CE O E /V P P X -D e c o d e r Y -D e c o d e r CE & OE & PG M & TEST C o n tr o l L o g ic C e ll A r r a y Y - G a tin g SA CKT & O u tp u t B u ffe r VCC GND D Q 0~D Q 7 Rev.
