CHAPTER 2 PIN FUNCTION
14
(2) Non-Port Pins (1/2)
Input/
Output
After
Reset
Alternate
Function
Pin
Pin Name
Function
INTP0
Input
External interrupt request inputs with specifiable valid edges
(rising edge, falling edge, both rising and falling edges).
Input
P00/TI0
INTP1
P01
INTP2
P02
INTP3
External interrupt input with falling edge detection.
P03/CI0
SI0
Input
Serial interface serial data input.
Input
P25/SB0
SI1
P20
SO0
Output
Serial interface serial data output.
Input
P26/SB1
SO1
P21
SB0
Input/
output
Serial interface serial data input/output.
Input
P25/SI0
SB1
P26/SO0
SCK0
Input/
output
Serial interface serial clock input/output.
Input
P27
SCK1
P22
STB
Output
Serial interface automatic transmit/receive strobe output.
Input
P23
BUSY
Input
Serial interface automatic transmit/receive busy input.
Input
P24
TI0
Input
Input of external count clock to 16-bit timer (TM0).
Input
P00/INTP0
TI1
Input of external count clock to 8-bit timer (TM1).
P33
TI2
Input of external count clock to 8-bit timer (TM2).
P34
TO0
Output
16-bit timer (TM0) output (alternate function as 14-bit PWM output).
Input
P30
TO1
8-bit timer (TM1) output.
P31
TO2
8-bit timer (TM2) output.
P32
CI0
Input
6-bit up/down counter clock input.
Input
P03/INTP3
PCL
Output
Clock output (for main system clock and subsystem clock trimming).
Input
P35
BUZ
Output
Buzzer output.
Input
P36
FIP0, FIP1
Output
High breakdown voltage and high current output for FIP controller/
driver digit output.
Output
P80, P81
FIP2 to FIP9
P90 to P97
FIP10 to FIP15 Output
High breakdown voltage and high current output for FIP controller/
driver digit/segment output.
Output
P100 to P105
FIP16, FIP17
Output
High breakdown voltage output for FIP controller/driver segment
output.
Output
P106, P107
FIP18 to FIP25
Input
P110 to P117
FIP26 to FIP33
P120 to P127
V
LOAD
—
Pull-down resistor connection for FIP controller/driver.
—
—
ANI0 to ANI7
Input
A/D converter analog input.
Input
P10 to P17
AV
REF
Input
A/D converter reference voltage input.
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