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ST10F273Z4 Datasheet(PDF) 31 Page - STMicroelectronics |
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ST10F273Z4 Datasheet(HTML) 31 Page - STMicroelectronics |
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31 / 188 page  ST10F273Z4 Internal Flash memory 31/188 5.4.3 Flash control register 1 low The Flash Control Register 1 Low (FCR1L), together with Flash Control Register 1 High (FCR1H), is used to select the sectors to Erase or, during any write operation, to monitor the status of each sector and bank. FCR1L (0x0E 0004) FCR Reset value: 0000h SUSP Suspend This bit must be set to suspend the current Program (Word or Double Word) or Sector Erase operation in order to read data in one of the sectors of the bank under modification or to program data in another bank. The Suspend operation resets the Flash bank to normal read mode (automatically resetting bits BSYx). When in Program Suspend, the Flash module accepts only the following operations: Read and Program Resume. When in Erase Suspend the module accepts only the following operations: Read, Erase Resume and Program (Word or Double Word; Program operations cannot be suspended during Erase Suspend). To resume a suspended operation, the WMS bit must be set again, together with the selection bit corresponding to the operation to resume (WPG, DWPG, SER).(1) WMS Write mode start This bit must be set to start every write operation in the Flash module. At the end of the write operation or during a Suspend, this bit is automatically reset. To resume a suspended operation, this bit must be set again. It is forbidden to set this bit if bit ERR of FER is high (the operation is not accepted). It is also forbidden to start a new write (program or erase) operation (by setting WMS high) when bit SUSP of FCR0 is high. Resetting this bit by software has no effect. 1. It is forbidden to start a new Write operation with bit SUSP already set. Table 9. Flash control register 0 high (continued) Bit Function 15 14 13 12 11 10 9876 543210 reserved B0F9 B0F8 B0F7 B0F6 B0F5 B0F4 B0F3 B0F2 B0F1 B0F0 RS RS RS RS RS RS RS RS RS RS Table 10. Flash control register 1 low Bit Function B0F(9:0) Bank 0 IFlash sector 9:0 status These bits must be set during a Sector Erase operation to select the sectors to erase in Bank 0. Besides, during any erase operation, these bits are automatically set and give the status of the 10 sectors of Bank 0 (B0F9-B0F0). The meaning of B0Fy bit for Sector y of Bank 0 is given by the next Table 12 Banks (BxS) and Sectors (BxFy) Status bits meaning. These bits are automatically reset at the end of a Write operation if no errors are detected. |
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