M27V201 Datasheet | STMicroelectronics

The M27V201 is a low voltage 2 Mbit EPROM offered 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 262,144 by 8 bits. The M27V201 operates in the read mode with a supply voltage as low as 3V. 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 allow the user to expose the chip to ultraviolet light to erase the bit pattern. Table 1. Signal Names A0-A17 Q0-Q7 E G P VPP VCC VSS Address Inputs Data Outputs Chip Enable Output Enable Program Program Supply Supply Voltage Ground PLCC32 (K) TSOP32 (N) 8 x 20 mm Figure 1. Logic Diagram 18 A0-A17 8 Q0-Q7 AI00693B May 1998 1/15 Figure 2A. DIP Pin Connections Figure 2B. LCC Pin 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 M27V201 9 24 10 23 11 22 12 21 13 20 14 19 15 18 16 17 AI01901 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 M27V201 25 17 VSS Q3 Q4 Q5 Q6 AI00694 Figure 2C. TSOP Pin Connections A11 A9 A8 A13 A14 A17 P VCC VPP A16 A15 A12 A7 A6 A5 A4 8 9 M27V201 (Normal) 25 24 AI01154B G A10 E Q7 Q6 Q5 Q4 Q3 VSS Q2 Q1 Q0 A0 A1 A2 A3 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 M27V201 is offered in PDIP32, PLCC32 and TSOP32 (8 x 20 mm) packages. DEVICE OPERATION The operating modes of the M27V201 are listed in the Operating Modes table. A single power supply is required in the read mode. All inputs are TTL levels except for VPP and 12V on A9 for Electronic Signature. Read...