Datasheet

XC167CI-16F
Derivatives
Functional Description
Data Sheet 51 V1.3, 2006-08
Table 7 Summary of the XC167’s Parallel Ports
Port Control Alternate Functions
PORT0 Pad drivers Address/Data lines or data lines
1)
1) For multiplexed bus cycles.
PORT1 Pad drivers Address lines
2)
2) For demultiplexed bus cycles.
Capture inputs or compare outputs,
Serial interface lines
Port 2 Pad drivers,
Open drain,
Input threshold
Capture inputs or compare outputs,
Timer control signal,
Fast external interrupt inputs
Port 3 Pad drivers,
Open drain,
Input threshold
Timer control signals, serial interface lines,
Optional bus control signal BHE
/WRH,
System clock output CLKOUT (or FOUT)
Port 4 Pad drivers,
Open drain,
Input threshold
Segment address lines
3)
3) For more than 64 Kbytes of external resources.
CAN interface lines
4)
4) Can be assigned by software.
Port 5 – Analog input channels to the A/D converter,
Timer control signals
Port 6 Open drain,
Input threshold
Capture inputs or compare outputs,
Bus arbitration signals BREQ
, HLDA, HOLD,
Optional chip select signals
Port 7 Open drain,
Input threshold
Capture inputs or compare outputs,
CAN interface lines
4)
Port 9 Pad drivers,
Open drain,
Input threshold
Capture inputs or compare outputs
CAN interface lines
4)
,
IIC bus interface lines
4)
Port 20 Pad drivers,
Open drain
Bus control signals RD, WR/WRL, READY, ALE,
External access enable pin EA
,
Reset indication output RSTOUT