M27W201 Datasheet | STMicroelectronics

DESCRIPTION The M27W201 is a low voltage 2 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 8 bits. The M27W201 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 FDIP32W (window ceramic frit-seal package) has a transparent lid which allows 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 application where the content is programmed only one time and erasure is not required, the M27W201 is offered in PDIP32, PLCC32 and TSOP32 (8 x 20 mm) packages. 18 A0-A17 8 Q0-Q7 AI01359 April 2000 1/15 Figure 2A. DIP Connections Figure 2B. LCC Connections VPP A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 Q0 Q1 Q2 VSS 1 32 2 31 3 30 4 29 5 28 6 27 7 26 8 25 M27W201 9 24 10 23 11 22 12 21 13 20 14 19 15 18 16 17 AI02675 VCC P A17 A14 A13 A8 A9 A11 G A10 E Q7 Q6 Q5 Q4 Q3 A7 A6 A5 A4 A3 A2 A1 A0 Q0 A12 A15 A16 VPP VCC P A17 1 32 A14 A13 A8 A9 A11 G A10 E Q7 9 M27W201 25 17 VSS Q3 Q4 Q5 Q6 AI01360 Figure 2C. TSOP Connections Table 1. Signal Names A0-A17 Address Inputs Data Outputs Chip Enable Output Enable Program Program Supply Supply Voltage Ground A11 A9 A8 A13 A14 A17 P VCC VPP A16 A15 A12 A7 A6 A5 A4 8 9 M27W201 (Normal) 25 24 AI01361 G A10 E Q7 Q6 Q5 Q4 Q3 VSS Q2 Q1 Q0 A0 A1 A2 A3 Q0-Q7 E G P VPP VCC VSS 2/15 Q1 Q2 Table 2. Absolute Maximum Ratings (1) Symbol TA TBIAS TSTG VIO (2) VCC VA9 (2) VPP Parameter Ambient Operating Temperature (3) Temperature Under Bias Storage Temperature Input or Output Voltage (except A9) Supply Voltage A9 Voltage...