AT27C400

AT27C400 Features Fast Read Access Time - 70 ns Word-wide or Byte-wide Configurable 4 Megabit Flash and Mask ROM Compatible Low Power CMOS Operation – 100 µA Maximum Standby – 50 mA Maximum Active at 5 MHz Wide Selection of JEDEC Standard Packages – 40-Lead 600 mil PDIP – 40-Lead SOIC (SOP) – 48-Lead TSOP (12 mm x 20 mm) 5V ± 10% Power Supply High Reliability CMOS Technology – 2,000V ESD Protection – 200 mA Latchup Immunity Rapid™Programming Algorithm - 50 µs/word (typical) CMOS and TTL Compatible Inputs and Outputs Integrated Product Identification Code Commercial and Industrial Temperature Ranges 4-Megabit (256K x 16 or 512K x 8) OTP EPROM AT27C400 Preliminary Description The AT27C400 is a low-power, high-performance 4,194,304-bit one-time programmable read only memory (OTP EPROM) organized as either 256K by 16 or 512K by 8 bits. It requires a single 5V power supply in normal read mode operation. Any word can be accessed in less than 70 ns, eliminating the need for speed-reducing WAIT states. The by-16 organization makes this part ideal for high-performance 16- and 32bit microprocessor systems. PDIP Top View SOIC (SOP) Pin Configurations Pin Name A0 - A17 O0 - O15 O15/A-1 BYTE/VPP CE OE NC Function Addresses Outputs Output/Address Byte Mode/ Program Supply Chip Enable Output Enable No Connect A17 A7 A6 A5 A4 A3 A2 A1 A0 CE GND OE O0 O8 O1 O9 O2 O10 O3 O11 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 ...