AT45DB642D DATASHEET PDF
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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VCSL Changed t from max. Output Test Load Page 21 Figure To enable the sector protection using the 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.
Datasheet: AT45DBD : Free Download, Borrow, and Streaming : Internet Archive
Fixed tim- ing is not recommended. The information in this document is provided in connection with Atmel products. Download datasheet 2Mb Share this page. The shipping carrier option is not marked on the devices.
Page 37 Output Test Load at45db64d2 The DataFlash is designed to The user is able to configure these parts to a byte page size if desired. Command Resume from Deep Power-down Figure 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. Master clocks in BYTE a. Main Memory Page Read Opcode: Therefore not possible to only program the first datashheet bytes of the register and then pro- gram the at45db624d 62 bytes at a later time.
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. Reading the Sector Lockdown Register The Sector Lockdown Register can be read to determine which sectors in the memory datadheet are permanently locked down. AC Waveforms Six different timing waveforms are shown below. Slave clocks out BYTE a first output byte.
Master clocks in At54db642d h last output byte. To allow for simple in-system reprogrammability, the AT45DBD does not require high input voltages for programming. The algorithm will be repeated sequentially for each page within the entire array. Read Operations The following block diagram and waveforms illustrate the various read sequences available.
Use Block Erase opcode 50H alternative. Parts ordered with suffix SL are shipped in bulk with the page size set to bytes. The entire main memory can be erased at one time ta45db642d using the Chip Erase command.
The Block Erase function is not affected by the Chip Erase issue. Deep Power-down, the device will return to the normal standby mode. Dimensions D1 and E do not include mold protrusion. Parts will have a or SL marked on vatasheet The Sector Protection Register can be reprogrammed while the sector protection enabled or dis- abled.
Main Memory Page to Buffer 1 or 2 Transfer 6.
AT45DBD-TU | ATMEL | DATASHEET | PHOTO
The status of whether or not sector protection has been enabled or disabled by either the software or the dataaheet controlled methods can be deter- mined by checking the Status Register. Therefore, the contents of the buffer will be altered from its previous state when this command is issued.
Page 31 Table 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.
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. Page 13 Software Sector Protection 8. Being able to reprogram the Sector Protection Register with the sector protection enabled allows the user to at45sb642d disable the sector protection to an individual sector rather than dis- abling sector protection completely.
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. Command Sector Lockdown Figure The surface finish of the package shall be EDM Charmille Main Memory Page Program through Buffer 1 or 2