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M27W401-120XF6TR Datasheet(PDF) 1 Page - STMicroelectronics |
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M27W401-120XF6TR Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 15 page 1/15 March 2000 M27W401 4 Mbit (512Kb x 8) Low Voltage UV EPROM and OTP EPROM s 2.7V to 3.6V LOW VOLTAGE in READ OPERATION s ACCESS TIME: –70ns at VCC = 3.0V to 3.6V –80ns at VCC = 2.7V to 3.6V s PIN COMPATIBLE with M27C4001 s LOW POWER CONSUMPTION: –15 µA max Standby Current – 15mA max Active Current at 5MHz s PROGRAMMING TIME 100 µs/byte s HIGH RELIABILITY CMOS TECHNOLOGY – 2,000V ESD Protection – 200mA Latchup Protection Immunity s ELECTRONIC SIGNATURE – Manufacturer Code: 20h – Device Code: 41h DESCRIPTION The M27W401 is a low voltage 4 Mbit EPROM of- fered in the two ranges 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 524,288 by 8 bits. The M27W401 operates in the read mode with a supply voltage as low as 2.7V at –40 to 85 °C tem- perature range. The decrease in operating power allows either a reduction of the size of the battery or an increase in the time between battery re- charges. The FDIP32W (window ceramic frit-seal package) has a transparent lid which allows the user to ex- pose the chip to ultraviolet light to erase the bit pat- tern. A new pattern can then be written to the device by following the programming procedure. For application where the content is programmed only one time and erasure is not required, the M27W401 is offered in PDIP32, PLCC32 and TSOP32 (8 x 20 mm) packages. Figure 1. Logic Diagram AI01590 19 A0-A18 Q0-Q7 VPP VCC M27W401 G VSS 8 E FDIP32W (F) PLCC32 (K) TSOP32 (N) 8 x 20 mm 1 32 32 1 PDIP32 (B) |
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