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MCP19124 Datasheet(PDF) 110 Page - Microchip Technology |
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MCP19124 Datasheet(HTML) 110 Page - Microchip Technology |
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110 / 236 page  MCP19124/5 DS20005619A-page 110 2016 Microchip Technology Inc. REGISTER 17-3: WPUGPA: WEAK PULL-UP PORTGPA REGISTER (Note 1) U-0 U-0 R/W-1 U-0 R/W-1 R/W-1 R/W-1 R/W-1 — — WPUA5 (2) — WPUA3 WPUA2 WPUA1 WPUA0 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 = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared bit 7-6 Unimplemented: Read as ‘0’ bit 5 WPUA5: Weak Pull-Up Register bit 1 = Pull-up enabled 0 = Pull-up disabled bit 4 Unimplemented: Read as ‘0’ bit 3-0 WPUA<3:0>: Weak Pull-Up Register bits 1 = Pull-up enabled 0 = Pull-up disabled Note 1: The weak pull-up device is enabled only when the global RAPU bit is enabled, the pin is in input mode (TRISGPA = 1) and the individual WPUA bit is enabled (WPUA = 1), and the pin is not configured as an analog input. 2: GPA5 weak pull-up is also enabled when the pin is configured as MCLR in the CONFIG register. REGISTER 17-4: ANSELA: ANALOG SELECT GPA REGISTER U-0 U-0 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 — — — — ANSA3 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 = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared bit 7-4 Unimplemented: Read as ‘0’ bit 3-0 ANSA<3:0>: Analog Select GPA Register bits 1 = Analog input. Pin is assigned as analog input (1). 0 = Digital I/O. Pin is assigned to port or special function. Note 1: Setting a pin to an analog input automatically disables the digital input circuitry, weak pull-ups and interrupt-on-change if available. The corresponding TRISA bit must be set to Input mode in order to allow external control of the voltage on the pin. |
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