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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ANSELA датащи(PDF) 189 Page - Microchip Technology |
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ANSELA датащи(HTML) 189 Page - Microchip Technology |
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189 / 222 page  2013 Microchip Technology Inc. DS22331A-page 189 MCP19111 28.0 IN-CIRCUIT SERIAL PROGRAMMING™ (ICSP™) ICSP programming allows customers to manufacture circuit boards with unprogrammed devices. Programming can be done after the assembly process, allowing the device to be programmed with the most recent firmware or a custom firmware. Five pins are needed for ICSP programming: • ICSPCLK • ICSPDAT • MCLR •VDD •VSS In Program/Verify mode the Program Memory, User IDs and the Configuration Words are programmed through serial communications. The ICSPDAT pin is a bidirectional I/O used for transferring the serial data and the ICSPCLK pin is the clock input. The device is placed into a Program/Verify mode by holding the ICSPDAT and ICSPCLK pins low, while raising the MCLR pin from VIL to VIHH. 28.1 Common Programming Interfaces Connection to a target device is typically done through an ICSP header. A commonly found connector on development tools is the RJ-11 in the 6P6C (6 pin, 6 connector) configuration. See Figure 28-1. FIGURE 28-1: ICD RJ-11 STYLE CONNECTOR INTERFACE Another connector often found in use with the PICkit™ programmers is a standard 6-pin header with 0.1 inch spacing. Refer to Figure 28-2. FIGURE 28-2: PICkit-STYLE CONNECTOR INTERFACE 1 2 3 4 5 6 Target Bottom Side PC Board MCLR VSS ICSPCLK VDD ICSPDAT NC Pin Description 1 = 1 = MCLR 2= 2 = VDDTarget 3= 3 = VSS (ground) 4 = 4 = ICSPDAT 5 = 5 = ICSPCLK 6 = 6 = No Connect 1 2 3 4 5 6 * The 6-pin header (0.100" spacing) accepts 0.025" square pins. Pin Description* 1 = 1 = MCLR 2= 2 = VDDTarget 3= 3 = VSS (ground) 4= 4 = ICSPDAT 5= 5 = ICSPCLK 6 = 6 = No Connect Pin 1 Indicator |
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