IP2022 User’s Manual—Peripherals www.ubicom.com 233 Table 4-1  I/O Port Pin Alternate Functions Name Pin Alternate Function RA0 5 High Power Output, Timer 1 Capture 1 Input (T1CPI1 pin) RA1 6 High Power Output, Timer 1 Capture 2 Input (T1CPI2 pin) RA2 7 High Power Output, Timer 1 Clock Input (T1CLK pin) RA3 8 High Power Output, Timer 1 Output (T1OUT pin) RB0 13 External Interrupt, Timer 2 Capture 1 Input (T2CPI1 pin) RB1 14 External Interrupt, Timer 2 Capture 2 Input (T2CPI2 pin) RB2 15 External Interrupt, Timer 2 Clock Input (T2CLK pin) RB3 16 External Interrupt, Timer 2 Output (T2OUT pin) RB4 17 External Interrupt RB5 18 External Interrupt, Parallel Slave Peripheral HOLD output RB6 19 External Interrupt, Parallel Slave Peripheral R/W input RB7 20 External Interrupt, Parallel Slave Peripheral CS input RC0 21 Parallel Slave Peripheral Data RC1 22 Parallel Slave Peripheral Data RC2 23 Parallel Slave Peripheral Data RC3 24 Parallel Slave Peripheral Data RC4 24 Parallel Slave Peripheral Data RC5 26 Parallel Slave Peripheral Data RC6 27 Parallel Slave Peripheral Data RC7 28 Parallel Slave Peripheral Data RD0 29 Parallel Slave Peripheral Data RD1 30 Parallel Slave Peripheral Data RD2 35 Parallel Slave Peripheral Data RD3 36 Parallel Slave Peripheral Data