Winbond Electronics Corporation W25B40A
W25B40A is fully compatible with the previous NexFlash NX25B40 Serial Flash memory. The W25B40 / W25B40A is packaged in an 8-pin SOIC 150-mil and is compatible with the standard W25P40 specification with the following exceptions. GENERAL DESCRIPTION The W25B40 / W25B40A is a 4Mb (512KB) Serial Flash Memory with erasable sectors that allows for boot code and parameter storage.| Part No. | W25B40A |
|---|---|
| Datasheet | W25B40A Download |
| Manufacturer |  Winbond Electronics Corporation |
| Description | 4M-BIT SERIAL FLASH MEMORY |
| Buy | Stock & Price |
FEATURES
● W25B40 / W25B40A 4M-bit Serial Flash – 4M-bit /512K-byte (524,288) – 256-bytes per programmable page● Compatible with W25P40 with special features – Small Boot and Parameter Sectors – Write protection of Boot/Parameter area
● Variable Sector Sizes for Boot Code and Parameter Storage – Seven sectors of 64KB – One sector each of 32KB, 16Kb and 8KB – Two sectors of 4KB – Bottom Boot organization (standard) – Top Boot organization (special order)
● 4-pin SPI Serial Interface – Clock, Chip Select, Data In, Data Out – Easily interfaces to popular microcontrollers – Compatible with SPI Modes 0 and 3 – Optional Hold function for SPI flexibility
● Low Power Consumption, Wide Temperature Range – Single 2.7 to 3.6V supply – 5mA active current, <1µA Power-down – -40° to +85°C operating range
● Fast and Flexible Serial Data Access – Clock operation to 40MHz – Byte-addressable Read and Program – Auto-increment Read capability – Manufacturer and Device ID
● Programming
FEATURES
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