MC68HC908GZ8VFA Freescale Semiconductor, MC68HC908GZ8VFA Datasheet - Page 163

• Manufacturer Part Number: MC68HC908GZ8VFA
• Description: IC MCU 8K FLASH 8MHZ CAN 48-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GZ8VFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: CAN, LIN, SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 37
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

DDRC6–DDRC0 — Data Direction Register C Bits
Figure 13-11
When bit DDRCx is a logic 1, reading address $0002 reads the PTCx data latch. When bit DDRCx is a
logic 0, reading address $0002 reads the voltage level on the pin. The data latch can always be written,
regardless of the state of its data direction bit.
Freescale Semiconductor
1. X = Don’t care
2. I/O pin pulled up to V
3. Writing affects data register, but does not affect input.
4. Hi-Z = High impedance
PTCPUE
These read/write bits control port C data direction. Reset clears DDRC6–DDRC0, configuring all port
C pins as inputs.
Bit
X
1 = Corresponding port C pin configured as output
0 = Corresponding port C pin configured as input
1
0
shows the port C I/O logic.
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.
DDRC
Bit
0
0
1
DD
READ DDRC ($0006)
WRITE DDRC ($0006)
WRITE PTC ($0002)
READ PTC ($0002)
PTCPUEx
by internal pullup device.
PTC
X
Bit
X
X
(1)
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
Input, Hi-Z
Input, V
RESET
Table 13-4. Port C Pin Functions
Figure 13-11. Port C I/O Circuit
I/O Pin
Output
Mode
V
DD
DD
INTERNAL
PULLUP
DEVICE
(2)
(4)
Table 13-4
NOTE
DDRCx
Accesses to DDRC
PTCx
DDRC6–DDRC0
DDRC6–DDRC0
DDRC6–DDRC0
Read/Write
summarizes the operation of the port C pins.
PTC6–PTC0
Read
Pin
Pin
Accesses to PTC
PTCx
PTC6–PTC0
PTC6–PTC0
PTC6–PTC0
Write
Port C
(3)
(3)
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