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PIC24HJ12GP201E/ML Datasheet(PDF) 171 Page - Microchip Technology |
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PIC24HJ12GP201E/ML Datasheet(HTML) 171 Page - Microchip Technology |
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171 / 234 page  © 2007 Microchip Technology Inc. Preliminary DS70282B-page 169 PIC24HJ12GP201/202 18.7 In-Circuit Serial Programming PIC24HJ12GP201/202 family digital signal controllers can be serially programmed while in the end application circuit. This is done with two lines for clock and data and three other lines for power, ground and the programming sequence. Serial programming allows customers to manufacture boards with unprogrammed devices and then program the digital signal controller just before shipping the product. Serial programming also allows the most recent firmware or a custom firmware to be programmed. Refer to the “dsPIC30F/33F Flash Programming Specification” (DS70152) document for details about In-Circuit Serial Programming (ICSP). Any of the three pairs of programming clock/data pins can be used: • PGC1/EMUC1 and PGD1/EMUD1 • PGC2/EMUC2 and PGD2/EMUD2 • PGC3/EMUC3 and PGD3/EMUD3 18.8 In-Circuit Debugger When MPLAB® ICD 2 is selected as a debugger, the in- circuit debugging functionality is enabled. This function allows simple debugging functions when used with MPLAB IDE. Debugging functionality is controlled through the EMUCx (Emulation/Debug Clock) and EMUDx (Emulation/Debug Data) pin functions. Any of the three pairs of debugging clock/data pins can be used: • PGC1/EMUC1 and PGD1/EMUD1 • PGC2/EMUC2 and PGD2/EMUD2 • PGC3/EMUC3 and PGD3/EMUD3 To use the in-circuit debugger function of the device, the design must implement ICSP connections to MCLR, VDD, VSS, PGC, PGD and the EMUDx/EMUCx pin pair. In addition, when the feature is enabled, some of the resources are not available for general use. These resources include the first 80 bytes of data RAM and two I/O pins. |
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