STMicroelectronics M27V401
The M27V401 is a low voltage 4 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 524,288 by 8 bits. The M27V401 operates in the read mode with a supply voltage as low as 3V.| Part No. | M27V401 |
|---|---|
| Datasheet | M27V401 Download |
| Manufacturer |  STMicroelectronics |
| Description | 4 Mbit 512Kb x8 Low Voltage UV EPROM and OTP EPROM |
| Buy | Stock & Price |
DESCRIPTION
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. A new pattern can then be written to the device by following the programming procedure. Table 1. Signal Names A0-A18 Q0-Q7 E G VPP VCC VSS Address Inputs Data Outputs Chip Enable Output Enable Program Supply Supply Voltage Ground PLCC32 (K) TSOP32 (N) 8 x 20 mm Figure 1. Logic Diagram VCC VPP 19 A0-A18 8 Q0-Q7 E G M27V401 VSS AI00695B May 1998 1/15 M27V401 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 M27V401 9 24 10 23 11 22 12 21 13 20 14 19 15 18 16 17 AI01861 VCC A18 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 A18 A17 1 32 A14 A13 A8 A9 A11 G A10 E Q7 9 M27V401 25 17 VSS Q3 Q4 Q5 Q6 AI00696 Figure 2C.
