mc9s08ac16 Freescale Semiconductor, Inc, mc9s08ac16 Datasheet - Page 96

• Manufacturer Part Number: mc9s08ac16
• Description: Hcs08 Microcontrollers 8-bit Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

1
1
Chapter 6 Parallel Input/Output
6.7.6
In addition to the I/O control, port C pins are controlled by the registers listed below.
96
PTCPE[5:0]
PTCSE[5:0]
Bit 6 is a reserved bit that must always be written to 0.
Bit 6 is a reserved bit that must always be written to 0.
Reset
Reset
Field
Field
5:0
5:0
W
W
R
R
Port C Pin Control Registers (PTCPE, PTCSE, PTCDS)
Internal Pullup 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 pullup devices are disabled.
0 Internal pullup device disabled for port C bit n.
1 Internal pullup device enabled for port C bit n.
Output Slew Rate Control Enable for Port C Bits — Each of these control bits determine whether output slew
rate control is enabled for the associated PTC pin. For port C pins that are configured as inputs, these bits have
no effect.
0 Output slew rate control disabled for port C bit n.
1 Output slew rate control enabled for port C bit n.
0
0
0
0
7
7
Figure 6-23. Output Slew Rate Control Enable for Port C (PTCSE)
Figure 6-22. Internal Pullup Enable for Port C (PTCPE)
R
R
0
0
6
6
Table 6-13. PTCPE Register Field Descriptions
Table 6-14. PTCSE Register Field Descriptions
PTCPE5
PTCSE5
MC9S08AC16 Series Data Sheet, Rev. 0
0
0
5
5
PRELIMINARY
PTCPE4
PTCSE4
0
0
4
4
Description
Description
PTCPE3
PTCSE3
3
0
3
0
PTCPE2
PTCSE2
0
0
2
2
1
PTCPE1
PTCSE1
Freescale Semiconductor
1
0
0
1
1
PTCPE0
PTCSE0
0
0
0
0