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Part Number: AT45DB041B
Description: The AT45DB041B is a 2.5-volt or 2.7-volt only, serial interface Flash memory ideally suited for a wide variety of digit...
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AT45DB041B
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DataSheet
General Description
AT45DB041B General Description
The AT45DB041B is a 2.5-volt or 2.7-volt only, serial interface Flash memory ideally suited for a wide variety of digital voice-, image-, program code- and data-storage applications. Its 4,325,376 bits of memory are organized as 2048 pages of 264 bytes each. In addition to the main memory, the AT45DB041B also contains two SRAM data buffers of 264 bytes each. The buffers allow receiving of data while a page in the main memory is being reprogrammed, as well as reading or writing a continuous data stream. EEPROM emulation (bit or byte alterability) is easily handled with a self-contained three step Read-Modify-Write operation. Unlike conventional Flash memories that are accessed randomly with multiple address lines and a parallel interface, the DataFlash uses a SPI serial interface to sequentially access its data. DataFlash sup- ports SPI mode 0 and mode 3. The simple serial interface facilitates hardware layout, increases system reliability, minimizes switching noise, and reduces package size and active pin count. The device is optimized for use in many commercial and industrial applications where high density, low pin count, low voltage, and low power are essential. The device operates at clock frequencies up to 20 MHz with a typical active read current consumption of 4 mA.
To allow for simple in-system reprogrammability, the AT45DB041B does not require high input voltages for programming. The device operates from a single power supply, 2.5V to 3.6V or 2.7V to 3.6V, for both the program and read operations. The AT45DB041B is enabled through the chip select pin (CS) and accessed via a three-wire interface consisting of the Serial Input (SI), Serial Output (SO), and the Serial Clock (SCK).
AT45DB041B Features
* Single 2.5V - 3.6V or 2.7V - 3.6V Supply
* Serial Peripheral Interface (SPI) Compatible
* 20 MHz Max Clock Frequency
* Page Program Operation
Single Cycle Reprogram (Erase and Program)
2048 Pages (264 Bytes/Page) Main Memory
* Supports Page and Block Erase Operations
* Two 264-byte SRAM Data Buffers Allows Receiving of Data while Reprogramming of Nonvolatile Memory
* Continuous Read Capability through Entire Array
* Low Power Dissipation
4 mA Active Read Current Typical
2 A CMOS Standby Current Typical
* Hardware Data Protection Feature
* 100% Compatible to AT45DB041 and AT45DB041A
* 5.0V-tolerant Inputs: SI, SCK, CS, RESET, and WP Pins
* Commercial and Industrial Temperature Ranges
* Serial Peripheral Interface (SPI) Compatible
* 20 MHz Max Clock Frequency
* Page Program Operation
Single Cycle Reprogram (Erase and Program)
2048 Pages (264 Bytes/Page) Main Memory
* Supports Page and Block Erase Operations
* Two 264-byte SRAM Data Buffers Allows Receiving of Data while Reprogramming of Nonvolatile Memory
* Continuous Read Capability through Entire Array
* Low Power Dissipation
4 mA Active Read Current Typical
2 A CMOS Standby Current Typical
* Hardware Data Protection Feature
* 100% Compatible to AT45DB041 and AT45DB041A
* 5.0V-tolerant Inputs: SI, SCK, CS, RESET, and WP Pins
* Commercial and Industrial Temperature Ranges
AT45DB041B Connection Diagram
AT45DB041B
PDF/DataSheet Download
- Datasheet: AT45DB041B
- File Size: 239086 KB
- Manufacturer: ATMEL [ATMEL Corporation]
- Click here to Download
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AT45DB041B Relative Products
AT45DB041A-TI
IC DATAFLASH 4M 28TSOP
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AT45DB041A-TC-2.5
IC DATAFLASH 4M 2.5V 28TSOP
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AT45DB041A-TC
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AT45DB041A-RI
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AT45DB041A-RC-2.5
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AT45DB041A-RC
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