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M27V402-150K5TR 데이터시트(PDF) 1 Page - STMicroelectronics |
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1 / 15 page 1/15 May 1998 M27V402 4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM s LOW VOLTAGE READ OPERATION: 3V to 3.6V s FAST ACCESS TIME: 120ns s LOW POWER CONSUMPTION: – Active Current 15mA at 5MHz – Standby Current 20 µA s PROGRAMMING VOLTAGE: 12.75V ± 0.25V s PROGRAMMING TIME: 100 µs/byte (typical) s ELECTRONIC SIGNATURE – Manufacturer Code: 20h – Device Code: 8Dh DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage as low as 3V. The decrease in op- erating 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 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. 1 40 1 40 FDIP40W (F) PDIP40 (B) PLCC44 (K) TSOP40 (N) 10 x 20 mm Figure 1. Logic Diagram AI01819 18 A0-A17 Q0-Q15 VPP VCC M27V402 VSS 16 G E Table 1. Signal Names A0-A17 Address Inputs Q0-Q15 Data Outputs E Chip Enable G Output Enable VPP Program Supply VCC Supply Voltage VSS Ground |
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