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ST10F272Z2T3 Datasheet(PDF) 38 Page - STMicroelectronics |
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ST10F272Z2T3 Datasheet(HTML) 38 Page - STMicroelectronics |
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38 / 189 page  Internal Flash memory ST10F272Z2 38/189 5.5.3 Flash non-volatile access protection register 0 5.5.4 Flash non-volatile access protection register 1 low FNVAPR0 (0x08 DFB8) NVR Reset value: ACFFh 15 14 13 12 11 10 987 65432 10 reserved DBGP ACCP RW RW Table 21. Flash non-volatile access protection register 0 Bit Function ACCP Access Protection This bit, if programmed at 0, disables any access (read/write) to data mapped inside IFlash Module address space, unless the current instruction is fetched from IFlash. DBGP Debug Protection This bit, if erased at 1, allows to by-pass all the protections using the Debug features through the Test Interface. If programmed at 0, on the contrary, all the debug features, the Test Interface and all the Flash Test Modes are disabled. Even STMicroelectronics will not be able to access the device to run any eventual failure analysis. FNVAPR1L (0x08 DFBC) NVR Delivery value:: FFFFh 15 14 13 12 11 10 987 65432 10 PDS15 PDS14 PDS13 PDS12 PDS11 PDS10 PDS9 PDS8 PDS7 PDS6 PDS5 PDS4 PDS3 PDS2 PDS1 PDS0 RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW Table 22. Flash non-volatile access protection register 1 low Bit Function PDS(15:0) Protections Disable 15-0 If bit PDSx is programmed at 0 and bit PENx is erased at 1, the action of bit ACCP is disabled. Bit PDS0 can be programmed at 0 only if both bits DBGP and ACCP have already been programmed at 0. Bit PDSx can be programmed at 0 only if bit PENx-1 has already been programmed at 0. |
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