datasheet using the terminology BFA9 – BFA0 to denote the 10 address bits required to Added AT45DBD-SU to ordering information and corresponding. Explore the latest datasheets, compare past datasheet revisions, and confirm part lifecycle. AT45DBD-SU Datasheet, 45DB 32M Flash Memory Datasheet, buy AT45DBD-SU.

Author: Tatilar Dazahn
Country: Netherlands
Language: English (Spanish)
Genre: Spiritual
Published (Last): 16 November 2004
Pages: 235
PDF File Size: 6.25 Mb
ePub File Size: 5.42 Mb
ISBN: 534-6-94113-710-6
Downloads: 64159
Price: Free* [*Free Regsitration Required]
Uploader: Dasar

Write Operations The following block diagram and waveforms illustrate the various write sequences available. If the device P The “power of 2” page size is a One-time Programmable OTP register and once the device is configured for “power of 2” page size, it cannot be reconfigured again.

PIC32 -> Atmel SPI Flash Memory (AT45DBD) | Microchip

Table details the values read from the Sector Lockdown Register. Deep Power-down After initial power-up, the device will default in standby mode.

After the last bit of the opcode sequence has been clocked in, the CS pin must be deasserted to initiate the internally self-timed erase cycle. E-July Corrected typographical errors. To perform a page erase in the binary page size bytesthe opcode 81 H must be loaded into the device, followed by three address bytes consist of 2 don’t care bits, 13 page address bits A21 – A9 that specify the page in the main memory to be erased and 9 don’t care bits.

The Chip Erase command will not affect sectors that are protected or locked down; the contents of those sectors will remain unchanged.

Haven’t received registration validation E-mail? Dafasheet the last bit in the main memory array has been read, the device will con- tinue reading back at the beginning of the first page of memory. This pin is used to provide a clock to the device and is used to control the flow of data to and from the device. Unless otherwise specified tolerance: Exposure to absolute maximum rating conditions for extended periods may affect device reliability.


Following the don’t care bytes, additional pulses on SCK result in data being output on the SO serial output pin. Determines the true geometric position. Data is first clocked into buffer 1 or buffer 2 from the input pin SI and then programmed into a specified page in the main memory. A key element of any voltage regulation scheme is its current sourcing capability. To load data into the DataFlash standard buffer bytesa 1-byte opcode, 84H for buffer 1 or 87H for buffer 2, must be clocked into the device, followed by three address bytes comprised of 14 don’t care bits and 10 buffer address bits BFA9 – BFAO.

PIC32 -> Atmel SPI Flash Memory (AT45DB321D)

To perform a main memory page program through buffer for the DataFlash standard page size bytesa 1-byte opcode, 82H for buffer 1 or 85H for buffer 2, must first be clocked into the device, followed by three address bytes. Main memory addressing is referenced using the terminology A21 – AO, where A21 – A9 denotes the 13 address bits required to desig- nate a page address and A8 – AO denotes the 9 address bits required to designate a byte address within a page.

Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. For instance, if 65 bytes of data are clocked in, then the 65th byte will be stored at byte location 0 at45dn321d-su the Security Register. Sector Number Protected Unprotected Table After the last bit of the opcode and dummy bytes have been clocked in, the data for the contents of the Sector Lockdown Register will be clocked out on the SO pin.


If this pin and feature are not utilized it is recommended that the RESET pin be driven high externally. Mismatch of the upper and lower dies and resin burrs are at45db321d-u included.

Once the CS pin has been asserted, the appropriate 4-byte opcode sequence must be clocked into the device in the correct order.

After the last bit of the opcode sequence has been clocked in, the CS pin can be deas- serted to start the erase process. The algorithm above shows the programming of a single at45rb321d-su.


Main Memory Page to Buffer 1 or 2 Compare 7. Input SO Serial Output: Asserting the CS pin selects the device. A logic 1 indicates that sector protection has been enabled and logic 0 indicates that sector protection has been disabled. Most of them seem to be misspelled words.

AT45DB321D-SU – 45DB321 32M Flash Memory Datasheet

TSOP package is not recommended for new designs. Dagasheet with cross- ing over page boundaries, no delays will be at45db321d-wu when wrapping around from the end of the array to the beginning of the array. Essentials Only Full Version. D – April Arlrlprl fi y ft mm Ml F n? Elcodis is a trademark of Elcodis Company Ltd.

CC voltages may produce spurious results and should not be attempted. When the end of a page in main memory is reached, the device will continue reading back at the beginning of the same page.