mc68hc08qa24 Freescale Semiconductor, Inc, mc68hc08qa24 Datasheet - Page 195

• Manufacturer Part Number: mc68hc08qa24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

16.5 Port C
16.5.1 Port C Data Register
MC68HC08QA24
Freescale Semiconductor
Functions:
Address:
Alternate
Port C is a 5-bit, general-purpose, bidirectional I/O port that shares one
of its pins with the bus clock (MCLK).
The port C data register contains a data latch for each of the five port C
pins.
PTC[4:0] — Port C Data Bits
MCLK — T12 System Bus Clock Bit
Reset:
Read:
Write:
These read/write bits are software-programmable. Data direction of
each port C pin is under the control of the corresponding bit in data
direction register C. Reset has no effect on port C data.
The bus clock (MCLK) is driven out of PTC2 when enabled by the
MCLKEN bit in PTCDDR7.
$0002
Bit 7
R
R
0
Figure 16-8. Port C Data Register (PTC)
Input/Output (I/O) Ports
= Reserved
R
6
0
R
5
0
Unaffected by reset
PTC4
4
PTC3
3
MCLK
PTC2
2
Input/Output (I/O) Ports
PTC1
Technical Data
1
PTC0
Bit 0
193