M27C4002 is a 4Mbit EPROM available in both UV (ultra violet erase) and OTP (one time programmable) versions. It is ideally suited for microprocessor systems requiring large programs and is organised as 262,144 words of 16 bits.
The M27C4002 is a 4 Mbit EPROM offered in UV (ultraviolet erase) and OTP (one‑time programmable) versions. It is organized as 262,144 words of 16 bits and is supplied in FDIP40W, JLCC44W, PDIP40, PLCC44 and TSOP40 packages. The device features a fast access time of 45 ns, low active current (70 mA at 10 MHz) and a standby current of about 100 µA.
The datasheet details electrical characteristics, absolute maximum ratings, and programming procedures. Programming requires a 12.75 V ± 0.25 V supply (Vpp) and typical programming time of 100 µs per byte. The document also provides timing diagrams for read, program, verify and standby modes, as well as recommended decoupling practices for system designers.
| Fast Access Time | 45 ns |
|---|---|
| Active Current (10 MHz) | 70 mA |
| Standby Current | ≈100 µA |
| Programming Voltage (Vpp) | 12.75 V ± 0.25 V |
| Programming Time | 100 µs per byte (typical) |
| Supply Voltage (Read Mode) | 5 V ± 10 % |
| Ambient Operating Temperature | -40 °C to 125 °C |
The programming voltage (Vpp) is 12.75 V ± 0.25 V.
It provides 4 Mbit of memory, organized as 262,144 words of 16 bits.
The active current is 70 mA when operating at 10 MHz.