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8XC196NT USER'S MANUAL
Port Pin
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
P5.0
P5.1
P5.2
P5.3
P5.4
P5.5
P5.6
P5.7
P6.0
P6.1
P6.2
P6.3
P6.4
P6.5
P6.6
P6.7
Table 6-5 lists the registers associated with the bidirectional ports. Each port has three control reg-
isters (Px_MODE, Px_DIR, and Px_REG); they can be both read and written. The Px_PIN regis-
6-4
Table 6-4. Bidirectional Port Pins
Special-function
Special-function
Signal(s)
Signal Type
EPA0
T2CLK
EPA1
EPA2
T2DIR
EPA3
EPA4
EPA5
EPA6
EPA7
TXD
RXD
EXTINT
BREQ#
INTOUT#
HOLD#
HLDA#
CLKOUT
ALE/ADV#
SLPALE
INST
SLPCS#
WR#/WRL#
SLPWR#
RD#
SLPRD#
SLPINT
BHE#/WRH#
READY
BUSWIDTH
EPA8
EPA9
T1CLK
T1DIR
SC0
SD0
SC1
SD1
Associated
Peripheral
I/O
EPA
I
Timer 2
I/O
EPA
I/O
EPA
I
Timer 2
I/O
EPA
I/O
EPA
I/O
EPA
I/O
EPA
I/O
EPA
O
SIO
I/O
SIO
I
Interrupts
O
Bus controller
O
Interrupts
I
Bus controller
O
Bus controller
O
Clock generator
O
Bus controller
I
Slave port
O
Bus controller
I
Slave port
O
Bus controller
I
Slave port
O
Bus controller
I
Slave port
O
Slave port
O
Bus controller
I
Bus controller
I
Bus controller
I/O
EPA
I/O
EPA
I
Timer 1
I
Timer 1
I/O
SSIO0
I/O
SSIO0
I/O
SSIO1
I/O
SSIO1
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