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M27W800-120F6TR Datasheet(PDF) 1 Page - STMicroelectronics |
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M27W800-120F6TR Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 15 page 1/15 March 2000 M27W800 8 Mbit (1Mb x 8 or 512Kb x 16) Low Voltage UV EPROM and OTP EPROM s 2.7V to 3.6V LOW VOLTAGE in READ OPERATION s ACCESS TIME: –90ns at VCC = 3.0V to 3.6V – 100ns at VCC = 2.7V to 3.6V s BYTE-WIDE or WORD-WIDE CONFIGURABLE s 8 Mbit MASK ROM REPLACEMENT s LOW POWER CONSUMPTION – Active Current 30mA at 8MHz – Standby Current 15µA s PROGRAMMING VOLTAGE: 12.5V ± 0.25V s PROGRAMMING TIME: 50µs/word s ELECTRONIC SIGNATURE – Manufacturer Code: 20h – Device Code: B2h DESCRIPTION The M27W800 is a low voltage 8 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. It is organised as either 1 Mbit words of 8 bit or 512 Kbit words of 16 bit. The pin- out is compatible with a 8 Mbit Mask ROM. The M27W800 operates in the read mode with a supply voltage as low as 2.7V. The decrease in operating power allows either a reduction of the size of the battery or an increase in the time be- tween battery recharges. The FDIP42W (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 rapidly to the device by following the programming proce- dure. For applications where the content is programmed only one time and erasure is not required, the M27W800 is offered in PDIP42 and PLCC44 pack- age. 1 42 1 42 FDIP42W (F) PDIP42 (B) PLCC44 (K) Figure 1. Logic Diagram AI03601 19 A0-A18 BYTEVPP Q0-Q14 VCC M27W800 G E VSS 15 Q15A–1 |
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