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PIC16C925-S/CL датащи(PDF) 32 Page - Microchip Technology |
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PIC16C925-S/CL датащи(HTML) 32 Page - Microchip Technology |
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32 / 182 page ![]() PIC16C925/926 DS39544A-page 30 Preliminary 2001 Microchip Technology Inc. TABLE 4-1: PORTA FUNCTIONS TABLE 4-2: SUMMARY OF REGISTERS ASSOCIATED WITH PORTA Name Bit# Buffer Function RA0/AN0 bit0 TTL Input/output or analog input. RA1/AN1 bit1 TTL Input/output or analog input. RA2/AN2 bit2 TTL Input/output or analog input. RA3/AN3/VREF bit3 TTL Input/output or analog input or VREF. RA4/T0CKI bit4 ST Input/output or external clock input for Timer0. Output is open drain type. RA5/AN4/SS bit5 TTL Input/output or analog input or slave select input for synchronous serial port. Legend: TTL = TTL input, ST = Schmitt Trigger input Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on Power-on Reset Value on all other RESETS 05h PORTA — — RA5 RA4 RA3 RA2 RA1 RA0 --0x 0000 --0x 0000 85h TRISA — — PORTA Data Direction Control Register --11 1111 --11 1111 9Fh ADCON1 — — — — — PCFG2 PCFG1 PCFG0 ---- -000 ---- -000 Legend: x = unknown, u = unchanged, - = unimplemented locations read as '0'. Shaded cells are not used by PORTA. |
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