MC68HC705X32CFU Freescale Semiconductor, MC68HC705X32CFU Datasheet - Page 59

• Manufacturer Part Number: MC68HC705X32CFU
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC705X32CFU

• Cpu Family: HC05
• Device Core Size: 8b
• Frequency (max): 4MHz
• Interface Type: SCI
• Program Memory Type: EPROM
• Program Memory Size: 32KB
• Total Internal Ram Size: 528Byte
• # I/os (max): 32
• Number Of Timers - General Purpose: 1
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• On-chip Adc: 8-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: PQFP
• Lead Free Status / Rohs Status: Supplier Unconfirmed

4.5.2
Each bit can be configured as input or output via the corresponding data direction bit in the port
data direction register (DDRx).
In addition, bit 2 of port C is used to output the CPU clock if the ECLK bit in the EEPROM
CTL/ECLK register is set (see
The state of the port data registers following reset is not defined.
4.5.3
All the port D bits are input-only and are shared with the A/D converter. The function of each bit is
determined by the ADON bit in the A/D status/control register.
The state of the port data registers following reset is not defined.
4.5.4
ADON — A/D converter on
Reset clears the ADON bit, thus configuring port D as an input only port.
MC68HC05X16
Port C data (PORTC)
Port D data (PORTD)
1 (set)
0 (clear) –
A/D status/control
Port data register C (PORTC)
Port data register D (PORTD)
A/D status/control register
Freescale Semiconductor, Inc.
–
For More Information On This Product,
the A/D converter.
A/D converter is switched on; all port D pins act as analog inputs for
A/D converter is switched off; all port D pins act as input only pins.
Address
Address
Address
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$0002
$0003
$0009
Section
INPUT/OUTPUT PORTS
COCO ADRC ADON
bit 7
bit 7
PD7
bit 7
4.3).
bit 6
bit 6
PD6
bit 6
PD5
bit 5
bit 5
bit 5
bit 4
bit 4
PD4
bit 4
0
PD3
CH3
bit 3
bit 3
bit 3
ECLK
PC2/
PD2
CH2
bit 2
bit 2
bit 2
bit 1
bit 1
PD1
bit 1
CH1
PD0
CH0
bit 0
bit 0
bit 0
0000 0000
Undefined
Undefined
on reset
on reset
on reset
State
State
State
4-5
4