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PIC16F010-E/MCSQTP Datenblatt(PDF) 72 Page - Microchip Technology |
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PIC16F010-E/MCSQTP Datenblatt(HTML) 72 Page - Microchip Technology |
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72 / 116 page ![]() PIC12F510/16F506 DS41268C-page 70 Preliminary © 2007 Microchip Technology Inc. 10.12 In-Circuit Serial Programming™ (ICSP™) The PIC12F510/16F506 microcontrollers can be serially programmed while in the end application circuit. This is simply done with two lines for clock and data, and three other lines for power, ground and the programming voltage. This allows customers to manu- facture boards with unprogrammed devices and then program the microcontroller just before shipping the product. This also allows the most recent firmware, or a custom firmware, to be programmed. The devices are placed into a Program/Verify mode by holding the GP1/RB1 and GP0/RB0 pins low while rais- ing the MCLR (VPP) pin from VIL to VIHH (see program- ming specification). GP1/RB1 becomes the programming clock and GP0/RB0 becomes the programming data. Both GP1/RB1 and GP0/RB0 are Schmitt Trigger inputs in this mode. After Reset, a 6-bit command is supplied to the device. Depending on the command and if the command was a Load or a Read, 14 bits of program data are then sup- plied to or from the device. For complete details of serial programming, please refer to the PIC12F510/16F506 Programming Specifications. A typical In-Circuit Serial Programming connection is shown in Figure 10-16. FIGURE 10-16: TYPICAL IN-CIRCUIT SERIAL PROGRAMMING CONNECTION External Connector Signals To Normal Connections To Normal Connections PIC12F510 VDD VSS MCLR/VPP GP1/RB1 GP0/RB0 +5V 0V VPP CLK Data I/O VDD PIC16F506 |
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