STMicroelectronics M27C400
The M27C400 is an 4 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. It is organised as either 512 Kwords of 8 bit or 256 Kwords of 16 bit.| Part No. | M27C400 |
|---|---|
| Datasheet | M27C400 Download |
| Manufacturer |  STMicroelectronics |
| Description | 4 Mbit 512Kb x8 or 256Kb x16 UV EPROM and OTP EPROM |
| Buy | Stock & Price |
DESCRIPTION
The pin-out is compatible with the most common 8 Mbit Mask ROM. 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 rapidly to the device by following the programming procedure. For applications where the content is programmed only one time and erasure is not required, the M27C400 is offered in PDIP40 package. VCC 18 A0-A17 15 Q15A–1 Q0-Q14 E G BYTEVPP M27C400 VSS AI01634 May 1999 1/14 M27C400 Figure 2. DIP 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 M27C400 30 11 29 12 28 13 27 14 26 15 25 16 17 24 18 23 19 22 20 21 AI01635 Table 1. Signal Names A0-A17 Address Inputs Data Outputs Data Outputs Data Output / Address Input Chip Enable Output Enable Byte Mode / Program Supply Supply Voltage Ground A8 A9 A10 A11 A12 A13 A14 A15 A16 BYTEVPP VSS Q15A–1 Q7 Q14 Q6 Q...
