MC68HC908AB32CFU Freescale Semiconductor, MC68HC908AB32CFU Datasheet - Page 316

• Manufacturer Part Number: MC68HC908AB32CFU
• Description: IC MCU 8MHZ 32K FLASH 64-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908AB32CFU

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM
• Number Of I /o: 51
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Input/Output (I/O) Ports
17.3 Port A
17.3.1 Port A Data Register (PTA)
17.3.2 Data Direction Register A (DDRA)
Technical Data
316
Address:
Address:
Port A is an 8-bit general-purpose bidirectional I/O port.
The port A data register contains a data latch for each of the eight port
A pins.
PTA[7:0] — Port A Data Bits
Data direction register A determines whether each port A pin is an input
or an output. Writing a logic 1 to a DDRA bit enables the output buffer for
the corresponding port A pin; a logic 0 disables the output buffer.
Reset:
Reset:
Read:
Read:
Write:
Write:
These read/write bits are software programmable. Data direction of
each port A pin is under the control of the corresponding bit in data
direction register A. Reset has no effect on port A data.
DDRA7
$0000
$0004
PTA7
Bit 7
Bit 7
Figure 17-2. Port A Data Register (PTA)
0
Figure 17-3. Data Direction Register A (DDRA)
Input/Output (I/O) Ports
DDRA6
PTA6
6
6
0
DDRA5
PTA5
5
5
0
Unaffected by Reset
DDRA4
PTA4
4
4
0
DDRA3
PTA3
3
3
0
MC68HC908AB32
DDRA2
PTA2
Freescale Semiconductor
2
2
0
DDRA1
PTA1
1
1
0
—
Rev. 1.1
DDRA0
PTA0
Bit 0
Bit 0
0