This document is the manual of 262144 by 8-bit (2097152-bit)，ultraviolet (UV) light erasable, electrically programmable read-only memories (EPROMs) products.
This document describes the TMS27C020 series of ultraviolet (UV) light erasable, electrically programmable read-only memories (EPROMs) and the TMS27PC020 series of one-time programmable (OTP) PROMs. Both devices feature a 262144-bit capacity organized as 262144 by 8 bits and utilize power-saving CMOS technology for high-speed operation and simple interfacing with MOS and bipolar circuits.
The datasheet details the electrical characteristics, pin configurations, and operating modes for these devices. It specifies that the TMS27C020 is available in a 32-pin dual-in-line ceramic package (J suffix) with temperature ranges of 0°C to 70°C (JL suffix) or -40°C to 85°C (JE suffix). The TMS27PC020 is offered in a 32-lead plastic leaded chip carrier (FM suffix) with temperature ranges of 0°C to 70°C (FML suffix) or -40°C to 85°C (FME suffix).
| Capacity | 262144 by 8 bits |
|---|---|
| Technology | CMOS |
| Supply Voltage (Read) | 5 V |
| Programming Voltage | 13 V |
| Access Time (100 ns) | TMS27C/PC020-10 |
| Access Time (200 ns) | TMS27C/PC020-20 |
| Active Power Dissipation | 165 mW |
| Standby Power Dissipation | 0.55 mW |
| Latchup Immunity | 250 mA |
The signature code is 9732, with 97 representing the manufacturer and 32 representing the device.
Using a typical 12-mW/cm2 filterless UV lamp, the device is erased in about 21 minutes.
The SNAP! Pulse programming algorithm programs the device in a nominal time of twenty-six seconds.