W25R256JV集成電路（IC）的存儲器規(guī)格書PDF中文資料

1. GENERAL DESCRIPTIONS

The W25R256JV (256M-bit) Serial Flash memory provides a storage solution for systems with limited

space, pins and power. The W25R series offers flexibility and performance well beyond ordinary Serial

Flash devices. They are ideal for code shadowing to RAM, executing code directly from Dual/Quad SPI

(XIP) and storing voice, text and data. All devices are offered in space-saving packages.

The W25R256JV support the standard Serial Peripheral Interface (SPI), Dual/Quad I/O SPI: Serial Clock,

Chip Select, Serial Data I/O0 (DI), I/O1 (DO), I/O2, and I/O3. SPI clock frequencies of up to 133MHz are

supported allowing equivalent clock rates of 266MHz (133MHz x 2) for Dual I/O and 532MHz (133MHz x

4) for Quad I/O when using the Fast Read Dual/Quad I/O instructions. These transfer rates can

outperform standard Asynchronous 8 and 16-bit Parallel Flash memories.

The device supports JEDEC standard manufacturer and device ID and SFDP Register, a 64-bit Unique

Serial Number and three 256-bytes Security Registers.

The W25R series is also equipped with an enhanced authentication security feature by Replay Protection

Monotonic Counter (RPMC). It provides a high level secured communication between the flash device and

the controller to reduce the system vulnerabilities to hardware attacks

2. FEATURES

New Family of SpiFlash Memories

– W25R256JV: 256M-bit / 32M-byte

– Standard SPI: CLK, /CS, DI, DO

– Dual SPI: CLK, /CS, IO0, IO1

– Quad SPI: CLK, /CS, IO0, IO1, IO2, IO3

– 3 or 4-Byte Addressing Mode

– Software Reset

Highest Performance Serial Flash

– 133MHz Standard/Dual/Quad SPI clocks

– 266/532MHz equivalent Dual/Quad SPI

– 60MB/S continuous data transfer rate

– More than 100,000 erase/program cycles

– More than 20-year data retention

Low Power, Wide Temperature Range

– Single 2.7 to 3.6V supply

– -40°C to +85°C operating range

Flexible Architecture with 4KB sectors

– Uniform Sector/Block Erase (4K/32K/64K-Byte)

– Program 1 to 256 byte per programmable page

– Erase/Program Suspend & Resume

Advanced Security Features

– Power Supply Lock-Down and OTP protection

– Top/Bottom, Complement array protection

– Individual Block/Sector array protection

– 64-Bit Unique ID for each device

– Discoverable Parameters (SFDP) Register

– 3X256-Bytes Security Registers with OTP locks

– Replay Protection Monotonic Counter (RPMC)

– Volatile & Non-volatile Status Register Bits

Space Efficient Packaging

– 8-pad WSON 8x6-mm

– Contact Winbond for other options