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PIC24FJ64GA 数据表(PDF) 36 Page - Microchip Technology |
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PIC24FJ64GA 数据表(HTML) 36 Page - Microchip Technology |
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36 / 52 page  PIC24FJXXXGA0XX DS39768D-page 36 © 2008 Microchip Technology Inc. TABLE 5-1: PROGRAMMING EXECUTIVE COMMAND SET 5.2.4 COMMAND DESCRIPTIONS All commands supported by the programming executive are described in Section 5.2.5 “SCHECK Command” through Section 5.2.12 “QVER Command”. 5.2.5 SCHECK COMMAND The SCHECK command instructs the programming executive to do nothing but generate a response. This command is used as a “Sanity Check” to verify that the programming executive is operational. Expected Response (2 words): 1000h 0002h Opcode Mnemonic Length (16-bit words) Time-out Description 0h SCHECK 1 1 ms Sanity check. 1h READC 3 1 ms Read an 8-bit word from the specified Device ID register. 2h READP 4 1 ms/row Read N 24-bit instruction words of code memory starting from the specified address. 3h RESERVED N/A N/A This command is reserved. It will return a NACK. 4h PROGC 4 5 ms Write an 8-bit word to the specified Device ID registers. 5h PROGP 99 5 ms Program one row of code memory at the specified address, then verify.(1) 7h RESERVED N/A N/A This command is reserved. It will return a NACK. 8h RESERVED N/A N/A This command is reserved. It will return a NACK. 9h RESERVED N/A N/A This command is reserved. It will return a NACK. Ah QBLANK 3 TBD Query if the code memory is blank. Bh QVER 1 1 ms Query the programming executive software version. Dh PROGW 4 5 ms Program one instruction word of code memory at the specified address, then verify. Legend: TBD = To Be Determined Note 1: One row of code memory consists of (64) 24-bit words. Refer to Table 2-3 for device-specific information. 15 12 11 0 Opcode Length Field Description Opcode 0h Length 1h Note: This instruction is not required for programming but is provided for development purposes only. |
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