mc68hc705v12 Freescale Semiconductor, Inc, mc68hc705v12 Datasheet - Page 33

• Manufacturer Part Number: mc68hc705v12
• Description: M68hc05-based Mcu Hc05 Freescale Semiconductor
• Manufacturer: Freescale Semiconductor, Inc

1.7.10 PC0–PC7
1.7.11 PD0–PD4/AD0–AD4
1.7.12 TXP and RXP
1.7.13 I
MC68HC705V12
MAX
—
Rev. 3.0
PB4 and PB5 are shared with the PWM output pins (PWMA and
PWMB). See
details on the operation of the PWMs.
These eight I/O lines comprise port C. The state of any pin is software
programmable and all port C lines are configured as inputs during
power-on or reset. All eight pins are connected via an internal gate to the
IRQ interrupt function. When the IRQ interrupt function is enabled, all the
port C pins will act as negative edge-sensitive IRQ sources. See
Section 7. Parallel Input/Output (I/O)
When the A/D converter is disabled, PD0–PD4 are general-purpose
input pins. The A/D converter is disabled upon exiting from reset. When
the A/D converter is enabled, one of these pins is the analog input to the
A/D converter. The A/D control register contains control bits to direct
which of the analog inputs are to be converted at any one time. A digital
read of this pin when the A/D converter is enabled results in a read of
logical 0 from the selected analog pin. A digital read of the remaining
pins gives their correct (digital) values. See
Analog-to-Digital (A/D) Converter
the A/D subsystem.
These pins provide the I/O interface for the byte data link controller
(BDLC) subsystem. See
Digital (BDLC–D)
This pin is used to define the maximum coil current in the gauges by
connecting a resistor from this pin (R
15.7 Coil Sequencer and
Freescale Semiconductor, Inc.
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Section 11. Pulse Width Modulators (PWMs)
General Description
for more details on the operation of the BDLC.
Section 14. Byte Data Link Controller –
Control.
for more details on the operation of
MAX
for more details on the I/O ports.
) to ground as shown in
Section 13.
Functional Pin Descriptions
Advance Information
General Description
for more