DESCRIPTION

The A25D40 is 4M-bit Serial Peripheral Interface (SPI) Flash memory, and supports the Dual SPI: Serial Clock, Chip Select, Serial Data I/O0 (SI), I/O1 (SO). The Dual Output data is transferred with speed of 108Mbits/s. The device uses a single low voltage power supply, ranging from 2.7 Volt to 3.6 Volt.

Additionally, the device supports JEDEC standard manufacturer and device ID.

The A25D40 is available in SOP8 TSSOP8 and

DFN8 ( packages.

FEATURES

 Serial Peripheral Interface (SPI)

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Standard SPI: SCLK, /CS, SI, SO, /WP

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Dual SPI: SCLK, /CS, IO0, IO1, /WP

 Read

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Normal Read (Serial): 55MHz clock rate

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Fast Read (Serial): 108MHz clock rate

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Dual Read: 108MHz clock rate

 Program

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Serial input Page Program up to 256bytes

 Erase

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Block erase (64/32 k B)

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Sector erase (4 k B)

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Chip erase

 Program/Erase Speed

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Page Program time: 0.7ms typical

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Sector Erase time: 100ms typical

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Block Erase time: 0.3/0.5s typical

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Chip Eras e time: 3 s typical

 Flexible Architecture

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Sector of 4k byte

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Block of 32/64k byt e

 Low Power Consumption

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20mA maximum active current

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5uA maximum power down current

 Software/Hardware Write Protection

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Enable/Disable protection with WP Pin

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Write protect all/portion of memory via software

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Top or Bottom, Sector or Block selection

 Single Supply Voltage

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Full voltage range: 2.7~3.6V

 Temperature Range

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Commercial (0 to +70 ℃℃)

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Industrial ( 40 to +85 ℃℃)

 Cycling Endurance/Data Retention

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Typical 100k Program Erase cycles on any

sector

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Typical 20 year data retention at +55

 Available in S OP8 , TSSOP8 and DFN8 (

p ackage s