W25P20-VNI View Datasheet(PDF) - Winbond

Part Name

Description

Manufacturer

W25P20-VNI

1M-BIT, 2M-BIT AND 4M-BIT SERIAL FLASH MEMORY WITH 40MHZ SPI

Winbond 

W25P10, W25P20 AND W25P40

1. GENERAL DESCRIPTION

The W25P10 (1M-bit), W25P20 (2M-bit) and W25P40 (4M-bit) Serial Flash memories provide a

storage solution for systems with limited space, pins and power. They are ideal for code download

applications as well as storing voice, text and data. The devices operate on a single 2.7V to 3.6V

power supply with current consumption as low as 4mA active and 1µA for power-down. All devices are

offered in space-saving 8-pin SOIC type packages as shown below. Contact Winbond for availability

of alternate packages. As part of a family of Serial Flash products, Winbond also provides a

compatible migration path to 8M/16M/32M-bit densities.

The W25P10/20/40 array is organized into 512/1024/2048 programmable pages of 256-bytes each. A

single byte or, up to 256 bytes, can be programmed at a time using the Page Program instruction.

Pages are grouped into 2/4/8 erasable sectors of 256 pages (64K-byte) each as shown in figure 2.

Both Sector Erase and Chip (full chip) Erase instructions are supported.

The Serial Peripheral Interface (SPI) consists of four pins (Serial Clock, Chip Select, Serial Data In

and Serial Data Out) that support high speed serial data transfers up to 40MHz. A Hold pin, Write

Protect pin and programmable write protect features provide further control flexibility. Additionally, the

device can be queried for manufacturer and device ID. Special customer ID (for copy authentication)

and factory programming is available, contact Winbond for more information.

The Winbond W25P10/20/40 are fully compatible with the previous NexFlash NX25P10/20/40 Serial

Flash memories.

2. FEATURES

• 1M / 2M / 4M-bit Serial Flash Memories

• Family of Serial Flash Memories

– W25P10: 1M-bit/128K-byte (131,072)

– W25P20: 2M-bit/256K-byte (262,144)

– W25P40: 4M-bit/512K-byte (524,288)

– 256-bytes per programmable page

– Migration path to 8M/16M/32M-bit

• 4-pin SPI Serial Interface

– Clock, Chip Select, Data In, Data Out

– Easily interfaces to popular microcontrollers

– Compatible with SPI Modes 0 and 3

– Bottom Boot organization (standard)

– Optional Hold function for SPI flexibility

• Low Power Consumption, Wide

Temperature Range

– Single 2.7 to 3.6V supply

– 4mA active current, 1µA Power-down (typ)

– -40° to +85°C operating range

• Fast and Flexible Serial Data Access

– 40MHz Fast Read, 33MHz Standard Read

– Byte-addressable Read and Program

– Auto-increment Read capability

– Manufacturer and Device ID

• Programming Features

– Page program up to 256 bytes <2ms

– Sector Erase (64K-byte) 2 seconds

– Chip erase: 3 seconds (25P10/20),

5 seconds (25P40)

– 100,000 erase/write cycles

– Twenty-year data retention

• Software and Hardware Write Protection

– Write-Protect all or portion of memory

– Enable/Disable protection with /WP pin

• Space Saving Package

– Tiny 8-pin SOIC 150mil

• Ideal for systems with limited pins, space,

and power

– Controller-based serial code-download

– µC systems storing data, text or voice

– Battery-operated and portable products

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