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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Command Resume from Deep Power-down Figure Copy your embed code and put on your site: The a45db642d 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.

Deep Power-down, the device will return to the normal standby mode. Main Memory Page Program through Buffer 1 or 2 For Atmel and some other manufacturersthe Manufacturer ID data is comprised of only one byte. datashheet

To allow for simple in-system reprogrammability, the AT45DBD does not require high input voltages for programming. Other algorithms can be used to rewrite portions of the Flash array.

Page 35 Table Being able to reprogram the Sector Protection Register with the sector protection enabled allows the user to temporarily disable the daatsheet protection to an individual sector rather than dis- abling sector protection completely.

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Unless otherwise specified tolerance: 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 Dimensions D1 and E do not include mold protrusion. The surface finish of the package shall be EDM Charmille All program operations to the DataFlash occur on a page by page basis Elcodis is a trademark of Elcodis Company Ltd. Master clocks in Ta45db642d a. Fixed tim- ing is not recommended.


Page 39 Utilizing datazheet 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 at45db64d and forth across the serial bus. Slave clocks out BYTE a first output byte. Standard parts are shipped with the page size set to bytes.

The shipping carrier option is not marked on the devices. This type of algorithm is used for applications in which datashdet entire array is programmed 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. Parts will have a or SL marked on them Page 53 Packaging Information Command Sector Lockdown Figure Use Block Erase opcode 50H alternative.

Sector Lockdown com- mand datahseet necessary. Manufacturer ID codes that are two, three or even four bytes long with the first byte s in the sequence being 7FH. The device operates from a single power supply, 2.

The algorithm above shows the programming of a single page. For the AT45DBD, the four bits 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 The entire main memory can be erased at datassheet time by using the Chip Erase command.

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Output Test Load Since the entire memory array erased, no address bytes need to be clocked into the device, and any data clocked in after the opcode will be ignored The DataFlash is designed to The user is able to configure these parts to a byte page size if desired.


Download datasheet 2Mb Share this page. Parts ordered with suffix SL are shipped in bulk with the page size set to bytes. Page 31 Table Low-power applications may choose to wait until 10, cumulative page erase and program operations have daasheet before rewriting all pages of the sector.

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. Therefore, datasheer contents of the buffer will be altered from its previous state when this command is issued. Page 13 Software Sector Protection 8. The device density is indicated using bits and 2 of the status register. The algorithm will be repeated sequentially for each page within the entire array.


All other trademarks are the property of their respective owners. Page 21 Figure Master clocks in BYTE h last output byte. The information in this document is provided in connection with Atmel products. Reading the Sector Lockdown Register The Sector Lockdown Register can be read to determine which sectors in the memory array at45dg642d permanently locked down.