XC858CA
General Device Information
2.4
Pin Definitions and Functions
The functions and default states of the XC858 external pins are provided in Table 2.
Table 2
Pin Definitions and Functions
Symbol Pin Number Type Reset Function
(LQFP-64)
State
P0
I/O
Port 0
Port 0 is an 8-bit bidirectional general purpose
I/O port. It can be used as alternate functions
for the JTAG, UART, UART1, T2CCU,
Timer 21, MultiCAN, SSC and External
Interface.
P0.0 17
Hi-Z TCK_0
JTAG Clock Input
CLKOUT_0 Clock Output
RXDO_1 UART Transmit Data Output
P0.1 21
Hi-Z TDI_0
JTAG Serial Data Input
RXD_1
UART Receive Data Input
RXDC1_0 MultiCAN Node 1 Receiver Input
EXF2_1 Timer 2 External Flag Output
P0.2 18
PU TDO_0
JTAG Serial Data Output
TXD_1
UART Transmit Data
Output/Clock Output
TXDC1_0 MultiCAN Node 1 Transmitter
Output
P0.3 63
Hi-Z SCK_1
SSC Clock Input/Output
RXDO1_0 UART1 Transmit Data Output
A17
Address Line 17 Output
P0.4 64
Hi-Z MTSR_1
TXD1_0
A18
SSC Master Transmit Output/
Slave Receive Input
UART1 Transmit Data
Output/Clock Output
Address Line 18 Output
P0.5 1
Hi-Z MRST_1 SSC Master Receive Input/Slave
Transmit Output
EXINT0_0 External Interrupt Input 0
T2EX1_1 Timer 21 External Trigger Input
RXD1_0 UART1 Receive Data Input
A19
Address Line 19 Output
Data Sheet
7
V1.0, 2010-03