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PIC16F1507-E/SS. 数据表(PDF) 99 Page - Microchip Technology |
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PIC16F1507-E/SS. 数据表(HTML) 99 Page - Microchip Technology |
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99 / 278 page  2011-2015 Microchip Technology Inc. DS40001586D-page 99 PIC16(L)F1507 REGISTER 11-4: LATA: PORTA DATA LATCH REGISTER U-0 U-0 R/W-x/u R/W-x/u U-0 R/W-x/u R/W-x/u R/W-x/u — —LATA5 LATA4 — LATA2 LATA1 LATA0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ u = Bit is unchanged x = Bit is unknown -n/n = Value at POR and BOR/Value at all other Resets ‘1’ = Bit is set ‘0’ = Bit is cleared bit 7-6 Unimplemented: Read as ‘0’ bit 5-4 LATA<5:4> : RA<5:4> Output Latch Value bits(1) bit 3 Unimplemented: Read as ‘0’ bit 2-0 LATA<2:0> : RA<2:0> Output Latch Value bits(1) Note 1: Writes to PORTA are actually written to corresponding LATA register. Reads from PORTA register is return of actual I/O pin values. REGISTER 11-5: ANSELA: PORTA ANALOG SELECT REGISTER U-0 U-0 U-0 R/W-1/1 U-0 R/W-1/1 R/W-1/1 R/W-1/1 — — — ANSA4 — ANSA2 ANSA1 ANSA0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ u = Bit is unchanged x = Bit is unknown -n/n = Value at POR and BOR/Value at all other Resets ‘1’ = Bit is set ‘0’ = Bit is cleared bit 7-5 Unimplemented: Read as ‘0’ bit 4 ANSA4 : Analog Select between Analog or Digital Function on pins RA4, respectively 1 = Analog input. Pin is assigned as analog input(1). Digital input buffer disabled. 0 = Digital I/O. Pin is assigned to port or digital special function. bit 3 Unimplemented: Read as ‘0’ bit 2-0 ANSA<2:0> : Analog Select between Analog or Digital Function on pins RA<2:0>, respectively 1 = Analog input. Pin is assigned as analog input(1). Digital input buffer disabled. 0 = Digital I/O. Pin is assigned to port or digital special function. Note 1: When setting a pin to an analog input, the corresponding TRIS bit must be set to Input mode in order to allow external control of the voltage on the pin. |
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