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PICDEMPIC18 Datasheet(PDF) 33 Page - Microchip Technology |
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PICDEMPIC18 Datasheet(HTML) 33 Page - Microchip Technology |
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33 / 38 page  Hardware Details © 2008 Microchip Technology Inc. DS51721B-page 29 A.1.13 LCD An LCD display with two lines, 16 characters each, is connected to the SPI I/O expander, MCP23S17. The two control lines and eight data lines are connected to the I/O expander. The I/O expander has an SPI interface that connects it to the microcontroller.The I/O expander is disabled or enabled from the SPI by jumper JP3. A.1.14 Sample Devices A sample part programmed with a simple program is included in the PICDEM PIC18 Explorer Demonstration Board Kit. The devices’ I/O features and port connections are listed in Table A-1. TABLE A-1: SAMPLE DEVICE I/O FEATURES AND CONNECTIONS Device LEDs RS-232/ USB S1 S2 S3 LCD Pot R3 EEPROM Temp Sensor ICD/ PICkit™ 2 Y1, Y2 PIC18F8722 RD7:RD0 RC6/RC7 RB0 RA5 MCLR RC3:RC5 RA0 RC3:RC5 RA1 RB6/RB7 Yes PIC18F87J11 RD7:RD0 RC6/RC7 RB0 RA5 MCLR RC3:RC5 RA0 RC3:RC5 RA1 RB6/RB7 Yes |
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