M27W402 Datasheet | STMicroelectronics

M27W402 4 Mbit (256Kb x16) Low Voltage UV EPROM and OTP EPROM s 2.7V to 3.6V SUPPLY VOLTAGE in READ OPERATION ACCESS TIME: - 80ns at VCC = 3.0V to 3.6V - 100ns at VCC = 2.7V to 3.6V 40 40 s s s PIN PATIBLE with M27C4002 LOW POWER CONSUMPTION: - 15µA max Standby Current - 15mA max Active Current at 5MHz 1 1 FDIP40W (F) PDIP40 (B) s s PROGRAMMING TIME 100µs/word HIGH RELIABILITY CMOS TECHNOLOGY - 2,000V ESD Protection - 200mA Latchup Protection Immunity PLCC44 (K) TSOP40 (N) 10 x 20 mm s ELECTRONIC SIGNATURE - Manufacturer Code: 0020h - Device Code: 0044h Figure 1. Logic Diagram DESCRIPTION The M27W402 is a low voltage 4 Mbit EPROM offered in the two range UV (Ultra Violet Erase) and OTP (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 262,144 by 16 bits. The M27W402 operates in the read mode with a supply voltage as low as 2.7V at - 40 to 85°C temperature range. The decrease in operating power allows either a reduction of the size of the battery or an increase in the time between battery recharges. The FDIP40W (window ceramic frit-seal package) has a transparent lids which allow the user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can then be written to the device by following the programming procedure. For applications where the content is programmed only one time and erasure is not required, the M27W402 is offered in PDIP40, PLCC44 and TSOP40 (10 x 20 mm) packages. VCC VPP 18 A0-A17 16 Q0-Q15 E G M27W402 VSS AI01863...