MC68HC908JG16FA MOTOROLA [Motorola, Inc], MC68HC908JG16FA Datasheet - Page 273
MC68HC908JG16FA
Manufacturer Part Number
MC68HC908JG16FA
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908JG16FA.pdf
(324 pages)
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14.8.1 Port Option Control Register
MC68HC908JG16
MOTOROLA
—
Rev. 1.0
Address:
The port option control register controls the pullup options for port A,
port B, port C, and port E pins. It also controls the drive configuration on
port D.
PTE20P — Pins PTE[2:0] Pullup Enable
PTDLDD — LED Direct Drive Control
PTDILDD — Infrared LED Drive Control
Reset:
Read:
Write:
This read/write bit controls the pullup option for the PTE2–PTE0 pins,
regardless whether the pins are configured as input or output.
This read/write bit controls the output current capability of
PTD5–PTD2 pins. When set, each port pin has 10mA current sink
limit. An LED can be connected directly between the pin and V
without the need of a series resistor.
This read/write bit controls the output current capability of PTD1 and
PTD0 pins. When set, each port pin has 25mA current sink capability.
An infrared LED can be connected directly between the pin and V
Freescale Semiconductor, Inc.
For More Information On This Product,
1 = Configure PTE2–PTE0 to have internal pullups
0 = Disconnect PTE2–PTE0 internal pullups
1 = PTD5–PTD2 configured for direct LED drive capability;
0 = PTD5–PTD2 configured as standard I/O port pins
1 = PTD1 and PTD0 configured for infrared LED drive capability;
0 = PTD1 and PTD0 configured as standard I/O port pins
PTE20P
Figure 14-17. Port Option Control Register (POCR)
$001D
Bit 7
when a pin is set as an output, the pin is an open-drain pin with
10mA current sink limit
when a pin is set as an output, the pin is an open-drain pin with
25mA current sink capability
0
Go to: www.freescale.com
Input/Output (I/O) Ports
PTDLDD PTDILDD
6
0
5
0
PTE4P
4
0
PTE3P
3
0
PCP
2
0
Input/Output (I/O) Ports
PBP
1
0
Technical Data
Port Options
DD
Bit 0
PAP
0
DD
273
.
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