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PY291A-20DM Datasheet(PDF) 1 Page - Pyramid Semiconductor Corporation |
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PY291A-20DM Datasheet(HTML) 1 Page - Pyramid Semiconductor Corporation |
1 / 9 page 1 Document # EPROM101 REV OR Revised June 2007 PY291A 2K X 8 REPROGRAMMABLE PROM DESCRIPTION The PY291A is a 2Kx8 CMOS PROM. The device is available in windowed packages which when exposed to UV light, the memory content in the PROM is erased and can be reprogrammed. EPROM technology is used in the memory cells for programming. The EPROM re- quires a 12.5V for programming. Devices are tested to insure that performance of the device meets the DC and AC specification limits after customer programming. To perform a read operation from the device, CS 1 is LOW and CS 2 and CS3 are HIGH. The memory contents in the address established by the Address pins (A 0 to A10) will become available on the outputs (O 0 to O7). The PY291A is available in 24-pin 300 mil Ceramic DIPs (CERDIP, Windowed and Non-Windowed) and Plastic DIPs (Non-Windowed). FUNCTIONAL BLOCK DIAGRAM PIN CONFIGURATION FEATURES EPROM Technology for reprogramming High Speed – 20/25/35/50 ns (Commercial) – 35/50 ns (Military) Low Power Operation: 660 mW Single 5V±10% Power Supply Windowed devices for reprogramming Fully TTL Compatible Inputs and Outputs Standard Pinout (JEDEC Approved) – 24-Pin 300 mil DIP – Windowed CERDIP – Non-Windowed CERDIP – Non-Windowed Plastic DIP DIP (P4, D4, WD1) Note: Window on WD1 package only |
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