MC68HC908LJ12CPB FREESCALE [Freescale Semiconductor, Inc], MC68HC908LJ12CPB Datasheet - Page 350

• Manufacturer Part Number: MC68HC908LJ12CPB
• Description: 8-bit microcontroller units
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

17.5 Port C
17.5.1 Port C Data Register (PTC)
MC68HC908LJ12
Freescale Semiconductor
Alternative Function:
—
Rev. 2.1
Address:
Port C is an 8-bit special function port that shares all of its port pins with
the liquid crystal display (LCD) driver module.
The port C data register contains a data latch for each of the eight port C
pins.
PTC[7:0] — Port C Data Bits
FP[26:19] — LCD Driver Frontplanes 26–19
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.
FP[26:19] are pins used for the frontplane output of the LCD driver
module. The enable bits, PCEH and PCEL, in the CONFIG2 register,
determine whether the PTC7/FP26–PTC4/FP23 and
PTC3/FP22–PTC0/FP19 pins are LCD frontplane driver pins or
general-purpose I/O pins. See
Driver
$0002
PTC7
FP26
Bit 7
Figure 17-9. Port C Data Register (PTC)
(LCD).
Input/Output (I/O) Ports
PTC6
FP25
6
PTC5
FP24
5
Unaffected by reset
PTC4
FP23
Section 16. Liquid Crystal Display
4
PTC3
FP22
3
PTC2
FP21
2
Input/Output (I/O) Ports
PTC1
FP20
1
Technical Data
PTC0
FP19
Bit 0
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