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ST10F272Z2 Datasheet(PDF) 31 Page - STMicroelectronics |
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ST10F272Z2 Datasheet(HTML) 31 Page - STMicroelectronics |
31 / 189 page ST10F272Z2 Internal Flash memory 31/189 5.4.2 Flash control register 0 high The Flash Control Register 0 High (FCR0H) together with the Flash Control Register 0 Low (FCR0L) is used to enable and to monitor all the write operations on the IFLASH. The user has no access in write mode to the Test-Flash (B0TF). Besides, Test-Flash block is seen by the user in Bootstrap Mode only. FCR0H (0x08 0002) FCR Reset value: 0000h 15 14 13 12 11 10 987 65432 10 WMS SUSP WPG DWPG SER reserved SPR reserved RW RW RW RW RW RW Table 9. Flash control register 0 high Bit Function SPR Set Protection This bit must be set to select the Set Protection operation. The Set Protection operation allows to program 0s in place of 1s in the Flash Non-Volatile Protection Registers. The Flash Address in which to program must be written in the FARH/L registers, while the Flash Data to be programmed must be written in the FDR0H/L before starting the execution by setting bit WMS. A sequence error is flagged by bit SEQER of FER if the address written in FARH/L is not in the range 0x0E8FB0- 0x08DFBF. SPR bit is automatically reset at the end of the Set Protection operation. SER Sector Erase This bit must be set to select the Sector Erase operation in the Flash modules. The Sector Erase operation allows to erase all the Flash locations to value 0xFF. From 1 to all the sectors of the same Bank (excluded Test-Flash for Bank B0) can be selected to be erased through bits BxFy of FCR1H/L registers before starting the execution by setting bit WMS. It is not necessary to pre-program the sectors to 0x00, because this is done automatically. SER bit is automatically reset at the end of the Sector Erase operation. DWPG Double Word Program This bit must be set to select the Double Word (64 bits) Program operation in the Flash module. The Double Word Program operation allows to program 0s in place of 1s. The Flash Address in which to program (aligned with even words) must be written in the FARH/L registers, while the 2 Flash Data to be programmed must be written in the FDR0H/L registers (even word) and FDR1H/L registers (odd word) before starting the execution by setting bit WMS. DWPG bit is automatically reset at the end of the Double Word Program operation. WPG Word Program This bit must be set to select the Word (32 bits) Program operation in the Flash module. The Word Program operation allows to program 0s in place of 1s. The Flash Address to be programmed must be written in the FARH/L registers, while the Flash Data to be programmed must be written in the FDR0H/L registers before starting the execution by setting bit WMS. WPG bit is automatically reset at the end of the Word Program operation. |
Similar Part No. - ST10F272Z2_08 |
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Similar Description - ST10F272Z2_08 |
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