W25X16A Datasheet, PDF (4/48 Pages) Winbond – 16M-BIT SERIAL FLASH MEMORY WITH 4KB SECTORS AND DUAL OUTPUT SPI

W25X16A
1 GENERAL DESCRIPTION
The W25X16A (16M-bit) Serial Flash memory provide a storage solution for systems with limited
space, pins and power. The 25X series offers flexibility and performance well beyond ordinary Serial
Flash devices. 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 5mA
active and 1µA for power-down. All devices are offered in space-saving packages.
The W25X16A array is organized into 8,192 programmable pages of 256-bytes each. Up to 256 bytes
can be programmed at a time using the Page Program instruction. Pages can be erased in groups of
16 (sector erase), groups of 256 (block erase) or the entire chip (chip erase). The W25X16A has 512
erasable sectors and 32 erasable blocks. The small 4KB sectors allow for greater flexibility in
applications that require data and parameter storage. (See figure 2.)
The W25X16A supports the standard Serial Peripheral Interface (SPI), and a high performance dual
output SPI using four pins: Serial Clock, Chip Select, Serial Data I/O and Serial Data Out. SPI clock
frequencies of up to 100MHz are supported allowing equivalent clock rates of 200MHz when using the
Fast Read Dual Output instruction. These transfer rates are comparable to those of 8 and 16-bit
Parallel Flash memories.
A Hold pin, Write Protect pin and programmable write protect, with top or bottom array control
features, provide further control flexibility. Additionally, the device supports JEDEC standard
manufacturer and device identification.
2 FEATURES
 Family of Serial Flash Memories
– W25X16A: 16M-bit / 2M-byte (2,097,152)
– 256-bytes per programmable page
– Uniform 4K-byte Sectors / 64K-byte Blocks
 SPI with Single or Dual Outputs
– Clock, Chip Select, Data I/O, Data Out
– Optional Hold function for SPI flexibility
 Data Transfer up to 200M-bits / second
– Clock operation to 100MHz
– Fast Read Dual Output instruction
– Auto-increment Read capability
 Flexible Architecture with 4KB sectors
– Sector Erase (4K-bytes)
– Block Erase (64K-byte)
– Page program up to 256 bytes <2ms
– More than 100,000 erase/write cycles
– More than 20-year data retention
 Low Power Consumption, Wide
Temperature Range
– Single 2.7 to 3.6V supply
– 5mA active current, 1µA Power-down (typ)
– -40° to +85°C operating range
 Software and Hardware Write Protection
– Write-Protect all or portion of memory
– Enable/Disable protection with /WP pin
– Top or bottom array protection
 Space Efficient Packaging
– 8-pin SOIC 150-mil⁽¹⁾
– 8-pin SOIC 208-mil
– 8-pin PDIP 300-mil
– 16-pin SOIC 300-mil
– 8-pad WSON 6x5-mm
Note 1: Package type SN (SOIC8 150mil) is a special order package, please contact Winbond for ordering information.
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