w25x32a Winbond Electronics Corp America, w25x32a Datasheet - Page 4

• Manufacturer Part Number: w25x32a
• Description: 32m-bit Serial Flash Memory With 4kb Sectors And Dual Output Spi
• Manufacturer: Winbond Electronics Corp America

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The W25X32A (32M-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 W25X32A array is organized into 16,384 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 W25X32A has 1,024
erasable sectors and 64 erasable blocks. The small 4KB sectors allow for greater flexibility in applications
that require data and parameter storage. (See figure 2.)
The W25X32A 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 75MHz are supported allowing equivalent clock rates of 150MHz 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.
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• Family of Serial Flash Memories
• SPI with Single or Dual Outputs
• Data Transfer up to 150M-bits / second
• Flexible Architecture with 4KB sectors
– W25X32A: 32M-bit / 4M-byte (4,194,304)
– 256-bytes per programmable page
– Uniform 4K-byte Sectors / 64K-byte Blocks
– Clock, Chip Select, Data I/O, Data Out
– Optional Hold function for SPI flexibility
– Clock operation to 75MHz
– Fast Read Dual Output instruction
– Auto-increment Read capability
– 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
GENERAL DESCRIPTION
FEATURES
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• Low Power Consumption, Wide
• Software and Hardware Write Protection
• Space Efficient Packaging
Temperature Range
– Single 2.7 to 3.6V supply
– 5mA active current, 1µA Power-down (typ)
– -40° to +85°C operating range
– Write-Protect all or portion of memory
– Enable/Disable protection with /WP pin
– Top or bottom array protection
– 8-pin SOIC 208-mil
– 8-pin PDIP 300-mil
– 16-pin SOIC 300-mil
– 8-pad WSON 6x5-mm
W25X32A