STMicroelectronics Memory IC M27C1001-90C1

The M27C1001-90C1 is a 1 Mbit (128Kb x 8) EPROM memory device from Quarktwin Technology Ltd., available in both UV (ultraviolet erase) and OTP (one-time programmable) versions. It operates with a supply voltage of 5V ± 10% during read operations and features an access time of 90 ns. The device consumes low power, with an active current of 30 mA at 5 MHz and a standby current of 100 µA. Programming requires a voltage of 12.75V ± 0.25V, with a programming time of 100 µs per word. The M27C1001 is organized as 131,072 words of 8 bits, making it suitable for microprocessor systems that require large programs. It is offered in various packages, including FDIP32W, PDIP32, PLCC32, and TSOP32, with transparent lids for UV erasure in the first two package types. The device also includes an electronic signature with a manufacturer code of 20h and a device code of 05h, which can be used for identification purposes.