SC9S12XS256J1MAA FREESCALE [Freescale Semiconductor, Inc], SC9S12XS256J1MAA Datasheet - Page 73
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SC9S12XS256J1MAA
Manufacturer Part Number
SC9S12XS256J1MAA
Description
HCS12 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.SC9S12XS256J1MAA.pdf
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2.3.3
2.3.4
Freescale Semiconductor
Address 0x0000 (PRR)
Address 0x0001 (PRR)
Read: Anytime. The data source depends on the data direction value.
Write: Anytime.
Read: Anytime. The data source depends on the data direction value.
Write: Anytime.
Field
Field
Reset
Reset
7-0
7-0
PB
PA
W
W
R
R
Port A general purpose input/output data—Data Register
The associated pin can be used as general purpose I/O. In general purpose output mode the register bit value is
driven to the pin.
If the associated data direction bit is set to 1, a read returns the value of the port register bit, otherwise the buffered
pin input state is read.
Port B general purpose input/output data—Data Register
The associated pin can be used as general purpose I/O. In general purpose output mode the register bit value is
driven to the pin.
If the associated data direction bit is set to 1, a read returns the value of the port register bit, otherwise the buffered
pin input state is read.
Port A Data Register (PORTA)
Port B Data Register (PORTB)
PB7
PA7
0
0
7
7
PB6
PA6
0
0
6
6
Table 2-5. PORTB Register Field Descriptions
Table 2-4. PORTA Register Field Descriptions
Figure 2-1. Port A Data Register (PORTA)
Figure 2-2. Port B Data Register (PORTB)
S12XS Family Reference Manual, Rev. 1.09
PB5
PA5
0
0
5
5
PB4
PA4
0
0
4
4
Description
Description
PB3
PA3
3
0
3
0
PB2
PA2
0
0
Port Integration Module (S12XSPIMV1)
2
2
Access: User read/write
Access: User read/write
PA1
PB1
0
0
1
1
PA0
PB0
0
0
0
0
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