TMS27C020 is a 262144 by 8-bit UV erasable EPROM, and TMS27PC020 is a one-time programmable EPROM. They feature high-speed programming, low power consumption, and compatibility with existing megabit EPROMs.
The TMS27C020 series are 262144 by 8-bit ultraviolet (UV) light erasable, electrically programmable read-only memories (EPROMs). The TMS27PC020 series are one-time programmable (OTP) electrically programmable read-only memories (PROMs). Both devices are fabricated using power-saving CMOS technology for high speed and simple interface with MOS and bipolar circuits.
| Memory Size | 262144 x 8 bits |
|---|---|
| Technology | CMOS |
| Operating Voltage | 5 V |
| Programming Voltage | 13 V |
| Access Time | 100 ns to 250 ns |
| Latchup Immunity | 250 mA |
| Active Supply Current | 165 mW |
| Standby Supply Current | 0.55 mW |
The signature code is 9732, where 97 is the manufacturer code and 32 is the device code.
A typical 12-mW/cm2 filterless UV lamp erases the device in 21 minutes.
The SNAP! Pulse programming algorithm programs the device in a nominal time of twenty-six seconds.