mc68hc708mp16 Freescale Semiconductor, Inc, mc68hc708mp16 Datasheet - Page 326

• Manufacturer Part Number: mc68hc708mp16
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Input/Output (I/O) Ports
15.6 Port D
Technical Data
326
Address:
When bit DDRCx is a logic 1, reading address $0002 reads the PTCx
data latch. When bit DDRCx is a logic 0, reading address $0002 reads
the voltage level on the pin. The data latch can always be written,
regardless of the state of its data direction bit.
the operation of the port C pins.
Port D is a 7-bit input only port that shares its pins with the pulse width
modulator for motor control module (PWMMC).
The port D data register (PTD) contains a data latch for each of the
seven port pins.
PTD[6:0] — Port D Data Bits
Reset:
DDRC
1. X = don’t care
2. Hi-Z = high impedance
3. Writing affects data register, but does not affect input.
Read:
Write:
These read/write bits are software programmable. Reset has no
effect on port D data.
Bit
0
1
$0003
Bit 7
PTC Bit
0
X
X
(1)
Figure 15-11. Port D Data Register (PTD)
Input/Output (I/O) Ports
= Unimplemented
PTD6
6
Table 15-3. Port C Pin Functions
I/O Pin Mode
Input, Hi-Z
Output
PTD5
5
(2)
Unaffected by reset
PTD4
4
Accesses to
Read/Write
DDRC[6:0]
DDRC[6:0]
DDRC
PTD3
3
MC68HC708MP16
Table 15-3
PTD2
PTC[6:0]
Freescale Semiconductor
2
Read
Accesses to PTC
Pin
PTD1
summarizes
1
PTC[6:0]
PTC[6:0]
—
Write
Rev. 3.1
PTD0
Bit 0
(3)