M27512

M27512 NMOS 512K (64K x 8) UV EPROM FAST ACCESS TIME: 200ns EXTENDED TEMPERATURE RANGE SINGLE 5V SUPPLY VOLTAGE LOW STANDBY CURRENT: 40mA max TTL COMPATIBLE DURING READ and PROGRAM FAST PROGRAMMING ALGORITHM ELECTRONIC SIGNATURE PROGRAMMING VOLTAGE: 12V 28 1 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 VCC 16 A0-A15 8 Q0-Q7 E M27512 Table 1. Signal Names A0 - A15 Q0 - Q7 E GVPP VCC VSS Address Inputs Data Outputs Chip Enable GVPP VSS Output Enable / Program Supply Supply Voltage Ground AI00765B March 1995 1/11 M27512 Table 2. Absolute Maximum Ratings Symbol TA TBIAS TSTG VIO VCC VA9 VPP Parameter Ambient Operating Temperature Temperature Under Bias Storage Temperature Input or Output Voltages Supply Voltage A9 Voltage Program Supply Grade 1 Grade 6 Grade 1 Grade 6 Value 0 to 70 –40 to 85 –10 to 80 –50 to 95 –65 to 125 –0.6 to 6.5 –0.6 to 6.5 –0.6 to 13.5 –0.6 to 14 Unit °C °C °C V V V V Note: Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings" may cause permanent damage to the device. These are stre...