M27512
M27512 is NMOS 512K 64K x 8 UV EPROM manufactured by STMicroelectronics.
NMOS 512K (64K x 8) UV EPROM
FAST ACCESS TIME: 200ns EXTENDED TEMPERATURE RANGE SINGLE 5V SUPPLY VOLTAGE LOW STANDBY CURRENT: 40m A max TTL PATIBLE DURING READ and PROGRAM FAST PROGRAMMING ALGORITHM ELECTRONIC SIGNATURE PROGRAMMING VOLTAGE: 12V
FDIP28W (F)
DESCRIPTION The M27512 is a 524,288 bit UV erasable and electrically programmable memory EPROM. It is organized as 65,536 words by 8 bits. The M27512 is housed in a 28 Pin Window Ceramic Frit-Seal Dual-in-Line package. The transparent lid 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.
Figure 1. Logic Diagram
16 A0-A15
8 Q0-Q7
Table 1. Signal Names
A0
- A15 Q0
- Q7 E GVPP VCC VSS Address Inputs Data Outputs Chip Enable
GVPP
Output Enable / Program Supply Supply Voltage Ground
AI00765B
March 1995
1/11
Table 2....
