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PIC18F258-E/LSQTP датащи(PDF) 97 Page - Microchip Technology |
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PIC18F258-E/LSQTP датащи(HTML) 97 Page - Microchip Technology |
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97 / 402 page ![]() © 2006 Microchip Technology Inc. DS41159E-page 95 PIC18FXX8 TABLE 9-1: PORTA FUNCTIONS TABLE 9-2: SUMMARY OF REGISTERS ASSOCIATED WITH PORTA Name Bit# Buffer Function RA0/AN0/CVREF bit 0 TTL Input/output, analog input or analog comparator voltage reference output. RA1/AN1 bit 1 TTL Input/output or analog input. RA2/AN2/VREF- bit 2 TTL Input/output, analog input or VREF-. RA3/AN3/VREF+ bit 3 TTL Input/output, analog input or VREF+. RA4/T0CKI bit 4 ST/OD Input/output, external clock input for Timer0, output is open-drain type. RA5/AN4/SS/LVDIN bit 5 TTL Input/output, analog input, slave select input for synchronous serial port or Low-Voltage Detect input. OSC2/CLKO/RA6 bit 6 TTL Oscillator clock output or input/output. Legend: TTL = TTL input, ST = Schmitt Trigger input, OD = Open-Drain Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on POR, BOR Value on all other Resets PORTA — RA6 RA5 RA4 RA3 RA2 RA1 RA0 -00x 0000 -uuu uuuu LATA — Latch A Data Output Register -xxx xxxx -uuu uuuu TRISA — PORTA Data Direction Register -111 1111 -111 1111 ADCON1 ADFM ADCS2 — — PCFG3 PCFG2 PCFG1 PCFG0 00-- 0000 uu-- uuuu Legend: x = unknown, u = unchanged, - = unimplemented locations read as ‘0’. Shaded cells are not used by PORTA. |
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