MC68HC908AS60CFN Freescale Semiconductor, MC68HC908AS60CFN Datasheet - Page 321

• Manufacturer Part Number: MC68HC908AS60CFN
• Description: IC MCU 60K FLASH 8MHZ 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908AS60CFN

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8.4MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 40
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 15x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

20.9.2 Data Direction Register G
MC68HC908AS60 — Rev. 1.0
NOTE:
Address:
PTG[2:0] — Port G Data Bits
Data direction register G (DDRG) determines whether each port G pin is
an input or an output. Writing a logic 1 to a DDRG bit enables the output
buffer for the corresponding port G pin; a logic 0 disables the output
buffer.
DDRG[2:0] — Data Direction Register G Bits
Avoid glitches on port G pins by writing to the port G data register before
changing data direction register G bits from 0 to 1.
Figure 20-22
Reset:
Read:
Write:
These read/write bits are software programmable. Data direction of
each port G pin is under the control of the corresponding bit in data
direction register G. Reset has no effect on PTG[2:0].
These read/write bits control port G data direction. Reset clears
DDRG[2:0], configuring all port G pins as inputs.
Freescale Semiconductor, Inc.
For More Information On This Product,
1 = Corresponding port G pin configured as output
0 = Corresponding port G pin configured as input
$000E
Bit 7
Figure 20-21. Data Direction Register G (DDRG)
R
R
0
0
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shows the port G I/O logic.
Input/Output (I/O) Ports
= Reserved
R
6
0
0
R
5
0
0
R
4
0
0
R
3
0
0
DDRG2
2
0
Input/Output (I/O) Ports
DDRG1
1
0
Technical Data
DDRG0
Port G
Bit 0
0