Electronic Components Datasheet Search |
|
AM29F400AB-70SI Datasheet(PDF) 2 Page - Advanced Micro Devices |
|
AM29F400AB-70SI Datasheet(HTML) 2 Page - Advanced Micro Devices |
2 / 35 page 2 Am29F400AT/Am29F400AB PRELIMINARY 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 12.0 Volt Flash or EPROM devices. The Am29F400A is programmed by executing the pro- gram command sequence. This will invoke the Embed- ded Program Algorithm which is an internal algorithm that automatically times the program pulse widths and verifies proper cell margin. Erase is accomplished by executing the erase command sequence. This will invoke the Embedded Erase Algorithm which is an internal algorithm that automatically preprograms the array if it is not already programmed before executing the erase operation. During erase, the device automat- ically times the erase pulse widths and verifies proper cell margin. This device also features a sector erase architecture. This allows for sectors of memory to be erased and re- programmed without affecting the data contents of other sectors. A sector is typically erased and verified within 1.5 seconds. The Am29F400A is erased when shipped from the factory. The Am29F400A device also features hardware sector protection. This feature will disable both program and erase operations in any combination of eleven sectors of memory. AMD has implemented an Erase Suspend feature that enables the user to put erase on hold for any period of time to read data from a sector that was not being erased. Thus, true background erase can be achieved. The device features single 5.0 Volt power supply oper- ation for both read and write functions. Internally gen- erated and regulated voltages are provided for the program and erase operations. A low VCC detector au- tomatically inhibits write operations during power tran- sitions. The end of program or erase is detected by the RY/BY pin. Data Polling of DQ7, or by the Toggle Bit (DQ6). Once the end of a program or erase cycle has been completed, the device automatically resets to the read mode. The Am29F400A also has a hardware RESET pin. When this pin is driven low, execution of any Embed- ded Program Algorithm or Embedded Erase Algorithm will be terminated. The internal state machine will then be reset into the read mode. The RESET pin may be tied to the system reset circuitry. Therefore, if a system reset occurs during the Embedded Program Algorithm or Embedded Erase Algorithm, the device will be auto- matically reset to the read mode and will have errone- ous data stored in the address locations being operated on. These locations will need rewriting after the Reset. Resetting the device will enable the sys- tem’s microprocessor to read the boot-up firmware from the Flash memory. AMD’s Flash technology combines years of Flash memory manufacturing experience to produce the highest levels of quality, reliability and cost effective- ness. The Am29F400A memory electrically erases all bits within a sector simultaneously via Fowler-Nordhiem tunneling. The bytes/words are pro- grammed one byte/word at a time using the EPROM programming mechanism of hot electron injection. Flexible Sector-Erase Architecture s One 16 Kbyte, two 8 Kbytes, one 32 Kbyte, and seven 64 Kbyte sectors s Individual-sector or multiple-sector erase capability s Sector protection is user definable Am29F400AT Sector Architecture Am29F400AB Sector Architecture 16 Kbyte 8 Kbyte 8 Kbyte 32 Kbyte 64 Kbyte 64 Kbyte 64 Kbyte 64 Kbyte 64 Kbyte 64 Kbyte 64 Kbyte SA10 SA9 SA8 SA7 SA6 SA5 SA4 SA3 SA2 SA1 SA0 20380B-1 7FFFFh 3FFFFh 7BFFFh 3DFFFh 79FFFh 3CFFFh 77FFFh 3BFFFh 6FFFFh 37FFFh 5FFFFh 2FFFFh 4FFFFh 27FFFh 3FFFFh 1FFFFh 2FFFFh 17FFFh 1FFFFh 0FFFFh 0FFFFh 07FFFh 00000h 00000h (x8) (x16) 64 Kbyte 64 Kbyte 64 Kbyte 64 Kbyte 64 Kbyte 64 Kbyte 64 Kbyte 32 Kbyte 8 Kbyte 8 Kbyte 16 Kbyte SA10 SA9 SA8 SA7 SA6 SA5 SA4 SA3 SA2 SA1 SA0 20380B-2 7FFFFh 3FFFFh 6BFFFh 37FFFh 5FFFFh 2FFFFh 4FFFFh 27FFFh 3FFFFh 1FFFFh 2FFFFh 17FFFh 1FFFFh 0FFFFh 0FFFFh 07FFFh 07FFFh 03FFFh 05FFFh 02FFFh 03FFFh 01FFFh 00000h 00000h (x8) (x16) |
Similar Part No. - AM29F400AB-70SI |
|
Similar Description - AM29F400AB-70SI |
|
|
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 |