8 www.ubicom.com IP2022 Data Sheet 2.1 Signal Descriptions I = Digital Input, AI = Analog Input, O/DO = Digital Output, HiZ = High Impedance, P = Power, PLP = On-Chip Pullup,
ST = Schmitt Trigger Table 2-1  Signal Descriptions Name Pin Type   Sink
@ 3.3V
IOVDD Source
@ 3.3V IOVDD Function AVDD 70 P Analog Supply AVSS 71 P Analog Ground DVDD  9, 31,
56, 72 P Logic Supply DVSS 10, 32, 55, 73 P Logic Ground GVDD 65 P I/O Port G supply IOVDD 12, 34, 53 P I/O Supply (except Port G) IOVSS 11, 33, 54 P I/O Ground (all ports) XVDD 76 P PLL Supply XVSS 77 P PLL Ground OSC1 78 I Clock/Crystal/Resonator Input OSC2 79 O Crystal/Resonator Output RST 80 I/ST/PLP Reset Input RTCLK1 74 I Real-Time Clock/Crystal Input RTCLK2 75 O Real-Time Crystal Output TSCK 2 I/ST/PLP Target SPI Clock TSI 3 I/ST/PLP Target SPI Serial Data Input TSO 4 O/HiZ Target SPI Serial Data output TSS 1 I/ST/PLP Target SPI Slave Select RA0 5 I/O 24 mA 24 mA I/O Port, High Power Output, Timer 1 Capture 1 Input RA1 6 I/O 24 mA 24 mA I/O Port, High Power Output, Timer 1 Capture 2 Input RA2 7 I/O 24 mA 24 mA I/O Port, High Power Output, Timer 1 Clock Input RA3 8 I/O 24 mA 24 mA I/O Port, High Power Output, Timer 1 Output RB0 13 I/O 8 mA 8 mA I/O Port, External Interrupt, Timer 2 Capture 1 Input RB1 14 I/O 8 mA 8 mA I/O Port, External Interrupt, Timer 2 Capture 2 Input RB2 15 I/O 8 mA 8 mA I/O Port, External Interrupt, Timer 2 Clock Input RB3 16 I/O 8 mA 8 mA I/O Port, External Interrupt, Timer 2 Output RB4 17 I/O 8 mA 8 mA I/O Port, External Interrupt