General Description

The HT27C512 chip family is a low-power, 512K bit, +5V electrically one-time programmable (OTP) read-only memories (EPROM). Or ganized into 64K words with 8 bits per word, it features a fast single address location programming, typically at 75µs per byte.

Features

• Operating voltage: +5.0V

• Programming voltage

  – VPP=12.2V±0.2V

  – VCC=5.8V±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: 30mA max.

  – Standby: 1µA typ.

• 64K×8-bit organization

• Fast read access time: 70ns, 90ns and 120ns

• Fast programming algorithm

• Programming time 75µs typ.

• Two line control (OE & CE)

• Standard product identification code

• Package type

  – 28-pin DIP/SOP

  – 32-pin PLCC

• Commercial temperature range(0°C to +70°C)