DESCRIPTION
It is organized as 65,536 words by 8 bits. 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.
STMicroelectronics
