Overview

The LE28F4001 Series ICs are 524288-word × 8-bit flash memory products that support on-board reprogramming and feature 5 V single-voltage power supply operation. CMOS peripheral circuits were adopted for high speed, low power, and ease of use. These products support a sector (256 bytes) erase function for fast data rewriting.

Features

• Fabricated in a highly reliable 2-layer polysilicon CMOS flash EEPROM process.

• Read and write operation from a 5 V single-voltage power supply

• Sector erase function: 256 bytes per sector

• Fast access time: 150/200 ns

• Low power

   — Operating current (read): 25 mA (maximum)

   — Standby current: 20 µA (maximum)

• Highly reliable read and write operations

   — Sector write cycles: 104 cycles

   — Data retention time: 10 years

• Address and data latches

• Self-timer erase and programming

• Byte programming time: 35 µs (maximum)

• Write complete detection: Toggle bit and data polling

• Hardware and software data protection

• Pin assignment conforms to the JEDEC byte-wide EEPROM standard

• Packages

   SOP 32-pin (525 mil) plastic package :LE28F4001M

   TSOP 40-pin (10 × 14 mm) plastic package:LE28F4001T

   TSOP 40-pin (10 × 14 mm) plastic package:LE28F4001R