 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
TMP92FD54AI 数据表(PDF) 21 Page - Toshiba Semiconductor |
|
|
|||||||||||||||||||||||||||||
TMP92FD54AI 数据表(HTML) 21 Page - Toshiba Semiconductor |
|
|
21 / 84 page  2006-01-27 92FD54AI-21 TMP92FD54AI (1-B) Example procedure for when the rewrite routine is transferred from an external source. (Step 1) First, the condition (e.g. the pin status) under which the program will enter User Boot Mode must be set and the I/O bus which the program will use to transfer data must be selected. Then a circuit must be designed and a corresponding program written. Before mounting this device on the board, the following two programs must be written into one of the blocks of the flash memory using a programmer or similar device. (a) Mode judgment routine: Code to determine when rewriting of the device will commence (b) Transfer routine: Program for reading the rewrite program from an external source In addition, the programs shown below should be present in the host: (c) Rewrite routine: Program for rewriting the flash memory (d) Copy routine-1: Code to copy (a) to (d) into the internal RAM or to the external ROM. (e) Copy routine-2 Code to copy (a) to (d) into the flash memory from the internal RAM or the external ROM (Step 2) The following explanation of the proceeding step assumes that the routines described above have been included in the Reset processing program. After reset the Reset-processing program must first determine whether or not the device should enter User Boot Mode. If the condition for entering User Boot Mode is true, the program must put the device into User Boot Mode, the mode in which to the flash memory can be rewritten. (Once the device has entered User Boot Mode, no interrupts ⎯ not even NMIs ⎯ should be used.) (TMP92FD54AI) Flash memory RAM [Reset-processing program] (a) Mode judgment routine Old user application program (Controller) (I/O) (b) Transfer routine New user application program (c) Rewrite routine (d) Copy routine-1 (e) Copy routine-2 (TMP92FD54AI) (Controller) (I/O) 0 → 1 RESET Condition for determining whether or not the device should be put into User Boot Mode (set exclusively by the user) Flash memory RAM [Reset-processing program] (a) Mode judgment routine Old user application program (b) Transfer routine New user application program (c) Rewrite routine (d) Copy routine-1 (e) Copy routine-2 |
|
链接网址 |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 数据表链接 | 链接交换 | 制造商名单 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 |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
