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PIC24FJ64GA Datasheet(PDF) 39 Page - Microchip Technology |
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PIC24FJ64GA Datasheet(HTML) 39 Page - Microchip Technology |
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39 / 52 page  © 2008 Microchip Technology Inc. DS39768D-page 39 PIC24FJXXXGA0XX 5.2.10 PROGW COMMAND The PROGW command instructs the programming executive to program one word of code memory (3 bytes) to the specific memory address. After the word has been programmed to code memory, the programming executive verifies the programmed data against the data in the command. Expected Response (2 words): 1600h 0002h 5.2.11 QBLANK COMMAND The QBLANK command queries the programming executive to determine if the contents of code memory and code-protect Configuration bits (GCP and GWRP) are blank (contain all ‘1’s). The size of code memory to check must be specified in the command. The Blank Check for code memory begins at 0h and advances toward larger addresses for the specified number of instruction words. QBLANK returns a QE_Code of F0h if the specified code memory and code-protect bits are blank; otherwise, QBLANK returns a QE_Code of 0Fh. Expected Response (2 words for blank device): 1AF0h 0002h Expected Response (2 words for non-blank device): 1A0Fh 0002h 15 12 11 8 7 0 Opcode Length Data_MSB Addr_MSB Addr_LS Data_LS Field Description Opcode Dh Length 4h Reserved 0h Addr_MSB MSB of 24-bit destination address Addr_LS Least Significant 16 bits of 24-bit destination address Data_MSB MSB of 24-bit data Data_LS Least Significant 16 bits of 24-bit data 15 12 11 0 Opcode Length PSize_MSW PSize_LSW Field Description Opcode Ah Length 3h PSize Length of program memory to check in 24-bit words plus one (max. of 49152) Note: QBLANK does not check the system operation Configuration bits, since these bits are not set to ‘1’ when a Chip Erase is performed. |
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