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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC16F684 датащи(PDF) 35 Page - Microchip Technology |
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PIC16F684 датащи(HTML) 35 Page - Microchip Technology |
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35 / 192 page  © 2007 Microchip Technology Inc. DS41202F-page 33 PIC16F684 REGISTER 4-4: WPUA: WEAK PULL-UP PORTA REGISTER U-0 U-0 R/W-1 R/W-1 U-0 R/W-1 R/W-1 R/W-1 — — WPUA5 WPUA4 — WPUA2 WPUA1 WPUA0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 7-6 Unimplemented: Read as ‘0’ bit 5-4 WPUA<5:4>: Weak Pull-up Control bits 1 = Pull-up enabled 0 = Pull-up disabled bit 3 Unimplemented: Read as ‘0’ bit 2-0 WPUA<2:0>: Weak Pull-up Control bits 1 = Pull-up enabled 0 = Pull-up disabled Note 1: Global RAPU must be enabled for individual pull-ups to be enabled. 2: The weak pull-up device is automatically disabled if the pin is in Output mode (TRISA = 0). 3: The RA3 pull-up is enabled when configured as MCLR and disabled as an I/O in the Configuration Word. 4: WPUA<5:4> always reads ‘1’ in XT, HS and LP OSC modes. REGISTER 4-5: IOCA: INTERRUPT-ON-CHANGE PORTA REGISTER U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 — — IOCA5 IOCA4 IOCA3 IOCA2 IOCA1 IOCA0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 7-6 Unimplemented: Read as ‘0’ bit 5-0 IOCA<5:0>: Interrupt-on-change PORTA Control bit 1 = Interrupt-on-change enabled 0 = Interrupt-on-change disabled Note 1: Global Interrupt Enable (GIE) must be enabled for individual interrupts to be recognized. 2: IOCA<5:4> always reads ‘1’ in XT, HS and LP OSC modes. |
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