STMicroelectronics M27W400
The M27W400 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. It is organised as either 512 Kwords of 8 bit or 256 Kwords of 16 bit.| Part No. | M27W400 |
|---|---|
| Datasheet | M27W400 Download |
| Manufacturer |  STMicroelectronics |
| Description | 4 Mbit 512Kb x8 or 256Kb x16 Low Voltage UV EPROM and OTP EPROM |
| Buy | Stock & Price |
DESCRIPTION
The pinout is compatible with the most common 4 Mbit Mask ROM. The M27W400 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 FDIP40W (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 M27W400 is offered in PDIP40 and PLCC44 packages. VCC 18 A0-A17 15 Q15A–1 Q0-Q14 E G BYTEVPP M27W400 VSS AI03096 January 2000 1/15 M27W400 Figure 2A. DIP Connections Figure 2B. LCC Connections A17 A7 A6 A5 A4 A3 A2 A1 A0 E VSS G Q0 Q8 Q1 Q9 Q2 Q10 Q3 Q11 1 40 2 39 3 38 4 37 5 36 6 35 7 34 33 8 32 9 31 10 M27W400 30 11 29 12 28 13 27 14...
