IP2022 Data Sheet www.ubicom.com 9 RB5 18 I/O 8 mA 8 mA I/O Port, External Interrupt, Parallel Slave Peripheral HOLD RB6 19 I/O 8 mA 8 mA I/O Port, External Interrupt, Parallel Slave Peripheral R/W RB7 20 I/O 8 mA 8 mA I/O Port, External Interrupt, Parallel Slave Peripheral CS RC0 21 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RC1 22 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RC2 23 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RC3 24 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RC4 25 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RC5 26 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RC6 27 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RC7 28 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RD0 29 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RD1 30 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RD2 35 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RD3 36 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RD4 37 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RD5 38 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RD6 39 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RD7 40 I/O 4 mA 4 mA I/O Port, Parallel Slave Peripheral Data RE0 41 I/O 8 mA 8 mA I/O Port, Serial 1 CLK RE1 42 I/O 8 mA 8 mA I/O Port, Serial 1 RXP RE2 43 I/O 8 mA 8 mA I/O Port, Serial 1 RXM RE3 44 I/O 8 mA 8 mA I/O Port, Serial 1 RXD RE4 45 I/O 8 mA 8 mA I/O Port, Serial 1 TXPE RE5 46 I/O 24 mA 24 mA I/O Port, High Power Output, Serial 1 TXP RE6 47 I/O 24 mA 24 mA I/O Port, High Power Output, Serial 1 TXM RE7 48 I/O 8 mA 8 mA I/O Port, Serial 1 TXME RF0 49 I/O 8 mA 8 mA I/O Port, Serial 2 TXPE RF1 50 I/O 24 mA 24 mA I/O Port, High Power Output, Serial 2 TXP RF2 51 I/O 24 mA 24 mA I/O Port, High Power Output, Serial 2 TXM RF3 52 I/O 8 mA 8 mA I/O Port, Serial 2 TXME RF4 57 I/O 8 mA 8 mA I/O Port, Serial 2 CLK RF5 58 I/O 8 mA 8 mA I/O Port, Serial 2 RXP RF6 59 I/O 8 mA 8 mA I/O Port, Serial 2 RXM Table 2-1  Signal Descriptions (continued) Name Pin Type   Sink
@ 3.3V
IOVDD Source
@ 3.3V IOVDD Function