mcf51ac256a Freescale Semiconductor, Inc, mcf51ac256a Datasheet - Page 114

• Manufacturer Part Number: mcf51ac256a
• Description: Mcf51ac Flexis
• Manufacturer: Freescale Semiconductor, Inc

Parallel Input/Output Control
6.5.3.2
6.5.3.3
6.5.3.4
6-10
Reset:
Reset:
Reset:
PTCDDn
PTCPEn
Field
Field
6–0
6–0
W
W
W
R
R
R
Data Direction for Port C Bits — These read/write bits control the direction of port C pins and what is read for
PTCD reads.
0 Input (output driver disabled) and reads return the pin value.
1 Output driver enabled for port C bit n and PTCD reads return the contents of PTCDn.
Internal Pull Enable for Port C Bits — Each of these control bits determines if the internal pullup device is
enabled for the associated PTC pin. For port C pins that are configured as outputs, these bits have no effect and
the internal pull devices are disabled.
0 Internal pullup device disabled for port C bit n.
1 Internal pullup device enabled for port C bit n.
Port C Data Direction Register (PTCDD)
0
0
Port C Pull Enable Register (PTCPE)
0
0
Port C Slew Rate Enable Register (PTCSE)
0
0
7
7
7
MCF51AC256 ColdFire Integrated Microcontroller Reference Manual, Rev. 5
PTCDD6
PTCPE6
PTCSE6
Figure 6-14. Internal Pull Enable for Port C Register (PTCPE)
Figure 6-15. Slew Rate Enable for Port C Register (PTCSE)
0
0
0
6
6
6
Figure 6-13. Port C Data Direction Register (PTCDD)
Table 6-12. PTCDD Register Field Descriptions
Table 6-13. PTCPE Register Field Descriptions
PTCDD5
PTCPE5
PTCSE5
0
0
0
5
5
5
PTCDD4
PTCPE4
PTCSE4
0
0
0
4
4
4
Description
Description
PTCDD3
PTCPE3
PTCSE3
3
0
3
0
3
0
PTCDD2
PTCPE2
PTCSE2
0
0
0
2
2
2
PTCDD1
PTCPE1
PTCSE1
Freescale Semiconductor
0
0
0
1
1
1
PTCDD0
PTCPE0
PTCSE0
0
0
0
0
0
0