Electronic Components Datasheet Search |
|
AM29F004BT-90JE Datasheet(PDF) 4 Page - SPANSION |
|
AM29F004BT-90JE Datasheet(HTML) 4 Page - SPANSION |
4 / 37 page 2 Am29F004B Am29F004B_00_E4 May 9, 2006 D A TA SH EE T GENERAL DESCRIPTION The Am29F004B is a 4 Mbit, 5.0 volt-only Flash memory device organized as 524,288 bytes. The data appears on DQ0–DQ7. The device is offered in a 32-pin PLCC package. This device is designed to be programmed in-system with the standard system 5.0 volt VCC supply. A 12.0 volt VPP is not required for program or erase operations. The device can also be programmed in standard EPROM programmers. The device offers access times of up to 70 ns, allowing high speed microprocessors to operate without wait states. To eliminate bus contention each device has separate chip enable (CE#), write enable (WE#) and output enable (OE#) controls. Each device requires only a single 5.0 volt power supply for both read and write functions. Internally generated and regu- lated voltages are provided for the program and erase operations. The Am29F004B is entirely command set compatible with the JEDEC single-power-supply Flash standard. Commands are written to the command register using standard micropro- cessor write timing. Register contents serve as inputs to an internal state-machine that controls the erase and program- ming circuitry. Write cycles also internally latch addresses and data needed for the programming and erase operations. Reading data out of the device is similar to reading from other Flash or EPROM devices. Device programming occurs by executing the program command sequence. This initiates the Embedded Program algorithm-an internal algorithm that automatically times the program pulse widths and verifies proper cell margin. Device erasure occurs by executing the erase command sequence. This initiates the Embedded Erase algorithm–an internal algorithm that automatically preprograms the array (if it is not already programmed) before executing the erase opera- tion. During erase, the device automatically times the erase pulse widths and verifies proper cell margin. The host system can detect whether a program or erase operation is complete by reading the DQ7 (Data# Polling), or DQ6 (toggle) status bits. After a program or erase cycle is completed, the device is ready to read array data or accept another command. The sector erase architecture allows memory sectors to be erased and reprogrammed without affecting the data con- tents of other sectors. The device is fully erased when shipped from the factory. Hardware data protection measures include a low VCC detector that automatically inhibits write operations during power transitions. The hardware sector protection feature dis- ables both program and erase operations in any combination of sectors of memory. This can be achieved in-system or via programming equipment. The Erase Suspend feature enables the user to put erase on hold for any period of time to read data from, or program data to, any sector that is not selected for erasure. True back- ground erase can thus be achieved. The device offers a standby mode as a power-saving fea- ture. Once the system places the device into the standby mode power consumption is greatly reduced. AMD’s Flash technology combines years of Flash memory manufacturing experience to produce the highest levels of quality, reliability and cost effectiveness. The device electri- cally erases all bits within a sector simultaneously via Fowler- Nordheim tunnelling. The data is programmed using hot elec- tron injection. |
Similar Part No. - AM29F004BT-90JE |
|
Similar Description - AM29F004BT-90JE |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |