Please refer to data sheets for detailed information. To select how PB3 and PB4 should be used, the jumpers labeled PB3 and PB4 must be set correctly. Description. The AT45DBD is a volt, dual-interface sequential access Flash memory ideally suited for a wide variety of digital voice-, image-, program. Explore the latest datasheets, compare past datasheet revisions, and confirm part Datasheet for AT45DBD-CNUReel AT45DBD-CNU-SL

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Main Memory Page to Buffer 1 dataasheet 2 Compare 7. The entire main memory can be erased at one time by using the Chip Erase command. Manufacturer ID codes that are two, three or even four bytes long with the first byte s in the sequence being 7FH. Command Resume from Deep Power-down Figure Command Sector Lockdown Figure Low-power applications may choose to wait until 10, cumulative page erase and program operations have accumulated before rewriting all pages of the sector.

Page 13 Software Datasheett Protection 8. PUW Changed t from max The algorithm will be repeated sequentially for each page within the entire array.

Elcodis is a trademark of Elcodis Company Ltd. Configuration Register is a user-programmable nonvolatile regis- ter that allows the page size of the main memory to be configured for binary page size bytes or standard DataFlash page size bytes.

VCSL Changed t from max. The at45db642f in this document is provided in connection with Atmel products. Page 35 Table To allow for simple in-system reprogrammability, the AT45DBD does not require high input voltages for programming.

The device operates from a single power supply, 2. Use Block Erase opcode 50H alternative.


Datashet Sector Protection 8. Page 53 Packaging Information Download datasheet 2Mb Share this page. The status of whether or not sector protection has been enabled or disabled by either the software or the hardware controlled methods can be deter- mined by checking the Status Register. To perform a contin- uous read with the page size set to bytes, the opcode, 03H, must be clocked into the device followed by three address bytes A22 – A Since the entire memory array erased, no address bytes need ay45db642d be clocked into the device, and any data clocked in after the opcode will be ignored Being able to reprogram the Sector Protection Register with the sector protection enabled allows the user to temporarily disable the sector protection to an individual sector rather than dis- abling sector protection completely.


Copy your embed code and put on your site: Parts will have a or SL marked on them Master clocks in BYTE h last output byte.

Memory Array To provide optimal flexibility, the memory array of the AT45DBD is divided into three levels of granularity comprising of sectors, blocks, and pages.

The shipping carrier option is not marked on the devices.

Parts ordered with suffix SL are shipped in bulk with the page size set to bytes. This type of at45db624d is used for applications in which the entire array is datashet sequentially, filling the array page-by- page page can be written using either a Main Memory Page Program operation or a Buffer Write operation followed by a Buffer to Main Memory Page Program operation. Main Memory Page Read Opcode: The algorithm above shows the programming of a single page.

AT45DBD datasheet & applicatoin notes – Datasheet Archive

Utilizing the RapidS To take advantage of the RapidS function’s ability to operate at higher clock frequencies, a full clock cycle must be used to transmit data back and forth across the serial bus. Unless otherwise specified tolerance: Standard parts are shipped with the page size set to bytes.


For the AT45DBD, the four datasheer are The decimal value of these four binary bits does not equate to the device density; the four bits represent a combinational code relating to differing densities of DataFlash devices For Atmel and some other manufacturersthe Manufacturer ID data is comprised of only one byte. Page 31 Table No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products.

The device density is indicated using bits and at45eb642d of the status register. All other trademarks are the property of their respective owners. AC Waveforms Six different timing waveforms are shown below. The first 13 bits PA12 – PA0 of the bit address sequence specify which page of the main memory array to read, and the last 11 bits BA10 – BA0 of the bit address sequence specify the starting byte address within the page.

Page 39 Utilizing the RapidS To take advantage of the RapidS function’s ability to operate at higher clock frequencies, a full clock cycle must be used to transmit data back and forth across the serial bus.


Please contact Atmel for the estimated availability of devices with the fix. To perform a buffer to main memory page program with built-in erase for the Output Test Load Sector Lockdown com- mand if necessary.

Reading the Sector Lockdown Register The Sector Lockdown Register can be read to determine which sectors in the memory array are permanently locked datashwet.