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Table 9.1
Port Functions
Port
Description
Port 1 General I/O port
also functioning
as PPG outputs*
TPU I/Os, and
2
DMAC I/Os*
Port 2 General I/O port
also functioning
as PPG outputs*
TPU I/Os, and
TMR I/Os
Port 3 General I/O port
also functioning
2
as SCI I/Os, I
C
I/Os, and bus
2
control I/Os*
Port 4 General I/O port
also functioning
as A/D converter
analog inputs and
D/A converter
analog outputs
Rev. 2.00, 05/03, page 300 of 820
1
Mode 1*
Mode 2*
2
P17/PO15*
/TIOCB2/TCLKD
2
P16/PO14*
/TIOCA2
2
,
2
P15/PO13*
/TIOCB1/TCLKC/DACK1*
2
P14/PO12*
/TIOCA1/DACK0*
2
P13/PO11*
/TIOCD0/TCLKB/TEND1*
2
P12/PO10*
/TIOCC0/TCLKA/TEND0*
2
P11/PO9*
/TIOCB0/DREQ1*
2
P10/PO8*
/TIOCA0/DREQ0*
2
P27/PO7*
/TIOCB5
2
P26/PO6*
/TIOCA5
2
,
2
P25/PO5*
/TIOCB4/TMO1
2
P24/PO4*
/TIOCA4/RxD4/TMO0
2
P23/PO3*
/TIOCD3/TxD4/TMCI1
2
P22/PO2*
/TIOCC3/TMCI0
2
P21/PO1*
/TIOCB3/TMRI1
2
P20/PO0*
/TIOCA3/TMIR0
P35/SCK1/SCL0/(OE)*
P34/SCK0/SCK4/SDA0
P33/RxD1/SCL1
P32/RxD0/IrRxD/SDA1
P31/TxD1
P30/TxD0/IrTxD
P47/AN7/(IRQ7)
P46/AN6/(IRQ6)
P45/AN5/(IRQ5)
P44/AN4/(IRQ4)
P43/AN3/(IRQ3)
P42/AN2/(IRQ2)
P41/AN1/(IRQ1)
P40/AN0/(IRQ0)
Mode 7
1
EXPE = 1
Mode 4
2
2
2
2
2
2
2
P35/SCK1/
SCL0(OE)*
Input/
Output
EXPE = 0
Type
Schmitt-
triggered
input
Schmitt-
triggered
input
P35/SCK1/
Open-
2
SCL0
drain
output
capability
Schmitt-
triggered
input when
used as
IRQ input
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