MC68HC908AS60CFN Freescale Semiconductor, MC68HC908AS60CFN Datasheet - Page 324

• 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

Input/Output (I/O) Ports
20.10.2 Data Direction Register H
Technical Data
NOTE:
Address:
Data direction register H (DDRH) determines whether each port H pin is
an input or an output. Writing a logic 1 to a DDRH bit enables the output
buffer for the corresponding port H pin; a logic 0 disables the output
buffer.
DDRH[1:0] — Data Direction Register H Bits
Avoid glitches on port H pins by writing to the port H data register before
changing data direction register H bits from 0 to 1.
Figure 20-25
Reset:
Read:
Write:
These read/write bits control port H data direction. Reset clears
DDRG[1:0], configuring all port H pins as inputs.
Freescale Semiconductor, Inc.
For More Information On This Product,
1 = Corresponding port H pin configured as output
0 = Corresponding port H pin configured as input
READ DDRH ($000F)
WRITE DDRH ($000F)
WRITE PTH ($000B)
READ PTH ($000B)
$000F
Bit 7
Figure 20-24. Data Direction Register H (DDRH)
R
R
0
0
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shows the port H I/O logic.
Input/Output (I/O) Ports
= Reserved
R
6
0
0
Figure 20-25. Port H I/O Circuit
RESET
R
5
0
0
DDRHx
PTHx
R
4
0
0
R
3
0
0
MC68HC908AS60 — Rev. 1.0
R
2
0
0
DDRH1
1
0
DDRH0
Bit 0
0
PTHx