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DSPIC33FJMC202ESS 数据表(PDF) 57 Page - Microchip Technology |
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DSPIC33FJMC202ESS 数据表(HTML) 57 Page - Microchip Technology |
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57 / 330 page  © 2007-2012 Microchip Technology Inc. DS70283K-page 57 dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304 REGISTER 5-1: NVMCON: FLASH MEMORY CONTROL REGISTER R/SO-0(1) R/W-0(1) R/W-0(1) U-0 U-0 U-0 U-0 U-0 WR WREN WRERR — — — — — bit 15 bit 8 U-0 R/W-0(1) U-0 U-0 R/W-0(1) R/W-0(1) R/W-0(1) R/W-0(1) — ERASE — —NVMOP<3:0>(2) bit 7 bit 0 Legend: SO = Settable Only bit R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 15 WR: Write Control bit 1 = Initiates a Flash memory program or erase operation. The operation is self-timed and the bit is cleared by hardware once operation is complete 0 = Program or erase operation is complete and inactive bit 14 WREN: Write Enable bit 1 = Enable Flash program/erase operations 0 = Inhibit Flash program/erase operations bit 13 WRERR: Write Sequence Error Flag bit 1 = An improper program or erase sequence attempt or termination has occurred (bit is set automatically on any set attempt of the WR bit) 0 = The program or erase operation completed normally bit 12-7 Unimplemented: Read as ‘0’ bit 6 ERASE: Erase/Program Enable bit 1 = Perform the erase operation specified by NVMOP<3:0> on the next WR command 0 = Perform the program operation specified by NVMOP<3:0> on the next WR command bit 5-4 Unimplemented: Read as ‘0’ bit 3-0 NVMOP<3:0>: NVM Operation Select bits(2) If ERASE = 1: 1111 = Memory bulk erase operation 1101 = Erase General Segment 1100 = Erase Secure Segment 0011 = No operation 0010 = Memory page erase operation 0001 = No operation 0000 = Erase a single Configuration register byte If ERASE = 0: 1111 = No operation 1101 = No operation 1100 = No operation 0011 = Memory word program operation 0010 = No operation 0001 = Memory row program operation 0000 = Program a single Configuration register byte Note 1: These bits can only be Reset on a POR. 2: All other combinations of NVMOP<3:0> are unimplemented. |
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