mc68hc908jw32 Freescale Semiconductor, Inc, mc68hc908jw32 Datasheet - Page 180

• Manufacturer Part Number: mc68hc908jw32
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Input/Output (I/O) Ports
13.7 Port Options
All pins of port B have programmable pullup resistors and LED drive capability. Port pins have
programmable high current drive capability.
13.7.1 Port Option Control Register 1
LEDB[5,1,0] — Port B LED Drive Enable Bits
13.7.2 Port Option Control Register 2
The port option control register controls the pullup options for port E.
PTD7PD — Pin PTD7 Pullup Disable
PTD3PD — Pin PTD3 Pullup Disable
PTD2PD — Pin PTD2 Pullup Disable
180
These read/write bits are software programmable to enable the direct LED drive on an output port pin.
This read/write bit disables the pullup option for pin PTD7. The pullup resistor is default enabled after
reset.
This read/write bit disables the pullup option for pin PTD3. The pullup resistor is default enabled after
reset.
This read/write bit disables the pullup option for pin PTD2. The pullup resistor is default enabled after
reset.
1 = Corresponding port B pin configured for direct LED drive: high current sinking capability
0 = Corresponding port B pin configured for standard drive
1 = Pullup option disabled
0 = Pullup option enabled
1 = Pullup option disabled
0 = Pullup option enabled
1 = Pullup option disabled
0 = Pullup option enabled
Address:
Address:
Reset:
Reset:
Read:
Write:
Read:
Write:
$001A
$001B
Bit 7
Bit 7
Table 13-10. port Option Control Register 1 (POCR1)
Table 13-11. Port Option Control Register 2 (POCR2)
0
0
0
= Unimplemented
= Unimplemented
6
0
6
0
0
MC68HC908JW32 Data Sheet, Rev. 5
PTD7PD
LEDB5
5
0
5
0
PTD3PD
4
0
4
0
PTD2PD DPPULLEN
3
0
3
0
2
0
2
0
LEDB1
PTE3P
1
0
1
0
Freescale Semiconductor
LEDB0
PTE2P
Bit 0
Bit 0
0
0