描述 Description

The AT27BV400 is a high performance low-power, low-voltage 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 only one supply in the range of 2.7 to 3.6V in normal read mode operation. The by-16 organization makes this part ideal for portable and hand held 16- and 32-bit microprocessor systems using either regulated or unregulated battery power.

特性 Features

? Fast Read Access Time - 120 ns

? Word-wide or Byte-wide Configurable

? Dual Voltage Range Operation

– Unregulated Battery Power Supply Range, 2.7V to 3.6V or Standard 5V ± 10 Supply Range

? 4-Megabit Flash and Mask ROM Compatable

? Low Power CMOS Operation

– 20 μA Maximum Standby

– 10 mA Max. Active at 5 MHz for VCC = 3.6V

? JEDEC Standard Packages

– 44-Lead PLCC

– 44-Lead SOIC (SOP)

– 48-Lead TSOP (12 mm x 20 mm)

? High Reliability CMOS Technology

– 2,000 ESD Protection

– 200 mA Latchup Immunity

? Rapid? Programming Algorithm - 50 μs/word (typical)

? CMOS and TTL Compatible Inputs and Outputs

– JEDEC Standard for LVTTL and LVBO

? Integrated Product Identification Code

? Commercial and Industrial Temperature Ranges