MC68HC908GP32CP Freescale Semiconductor, MC68HC908GP32CP Datasheet - Page 225

• Manufacturer Part Number: MC68HC908GP32CP
• Description: IC MCU 8MHZ 32K FLASH 40-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GP32CP

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 33
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• For Use With: M68EVB908GP32 - BOARD EVALUATION FOR HC908GP32
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

16.5.2 Data Direction Register C
MC68HC908GP32
MOTOROLA
NOTE:
NOTE:
•
MC68HC08GP32
Address:
Data direction register C (DDRC) determines whether each port C pin is
an input or an output. Writing a logic 1 to a DDRC bit enables the output
buffer for the corresponding port C pin; a logic 0 disables the output
buffer.
DDRC6–DDRC0 — Data Direction Register C Bits
Avoid glitches on port C pins by writing to the port C data register before
changing data direction register C bits from 0 to 1.
Figure 16-11
For those devices packaged in a 40-pin dual in-line package and 42-pin
shrink dual in-line package, PTC5 and PTC6 are connected to ground
internally. DDRC5 and DDRC6 should be set to a 0 to configure PTC5
and PTC6 as inputs.
Reset:
Read:
Write:
These read/write bits control port C data direction. Reset clears
DDRC6–DDRC0, configuring all port C pins as inputs.
1 = Corresponding port C pin configured as output
0 = Corresponding port C pin configured as input
—
$0006
Bit 7
Figure 16-10. Data Direction Register C (DDRC)
Rev. 6
0
0
shows the port C I/O logic.
Input/Output (I/O) Ports
= Unimplemented
DDRC6
6
0
DDRC5
5
0
DDRC4
4
0
DDRC3
3
0
DDRC2
2
0
Input/Output (I/O) Ports
DDRC1
1
0
Technical Data
DDRC0
Bit 0
Port C
0
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