mc68hc908jb8 Freescale Semiconductor, Inc, mc68hc908jb8 Datasheet - Page 210

• Manufacturer Part Number: mc68hc908jb8
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Input/Output Ports (I/O)
12.6.1 Port D Data Register
Technical Data
210
NOTE:
NOTE:
Additional
Function:
Address:
The port D data register contains a data latch for each of the eight port D
pins.
PTD7–PTD2 are not available in the 20-pin PDIP and 20-pin SOIC
packages. PTD7 is not available in the 28-pin SOIC package.
PTD[7:0] — Port D Data Bits
In 20-pin package, PTD1 and PTD0 are bonded together to PTD0/1 pin,
forming a 50mA high current sink pin. When both PTD1 and PTD0 are
configured as output, the values of PTD0 and PTD1 should be written
the same.
Reset:
Read:
Write:
These read/write bits are software programmable. Data direction of
each port D pin is under control of the corresponding bit in data
direction register D. Reset has no effect on port D data.
The LED direct drive bit, PTDLDD, in the port option control register
(POCR) controls the drive options for the PTD5–PTD2 pins. The
infrared LED drive bit, PTDILDD, in the POCR controls the drive
options for the PTD1–PTD0 pins. (See
Open-drain Open-drain Open-drain Open-drain Open-drain Open-drain Open-drain Open-drain
$0003
PTD7
Bit 7
Figure 12-11. Port D Data Register (PTD)
Input/Output Ports (I/O)
PTD6
6
MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
10mA
PTD5
sink
5
Unaffected by reset
10mA
PTD4
sink
4
10mA
PTD3
sink
12.8 Port
3
10mA
PTD2
sink
Freescale Semiconductor
2
Options.)
25mA
PTD1
sink
1
25mA
PTD0
Bit 0
sink