
General Description
Functional Pin Description
MC68HC(7)05H12
—
Rev. 1.0
General Release Specification
MOTOROLA
General Description
23
L
G
R
1.6.9 PD0–PD3/AN0–AN3
These four input only lines comprise port D. See
Section 7 Input/Output Ports
for more details on the I/O ports. When
the A/D converter is active, one of the 4 input lines may be selected by
the A/D multiplexer for conversion. See
Section 12 Analog to Digital
Converter
for more details on the operation of the A/D subsystem.
1.6.10 VREFH
This pin provides the positive reference voltage for the A/D converter.
VSS provides the negative reference voltage for the A/D converter.
1.6.11 PE0–PE7
These eight output only lines comprise port E. See
Section 7 Input/Output Ports
for more details on the I/O ports. The
eight lines are shared with four PWM H-bridge driver pairs. The outputs
are formed by special power drivers. See
Section 14 Pulse Width
Modulator (PWM)
for more details on the PWM subsystem.
1.6.12 PF0–PF3
These four output only lines comprise port F. See
Section 7 Input/Output Ports
for more details on the I/O ports. The
four lines are shared with four PWM channels. The outputs are formed
by special power drivers. See
Section 14 Pulse Width Modulator
(PWM)
for more details on the PWM subsystem.
1.6.13 PVDD1, PVSS1, PVDD2, PVSS2
Power is supplied to the power drivers through PVDD and PVSS.
PVDD1 and PVSS1 are the supply pins for PE0–3 and PF0–1 and
PVDD2 and PVSS2 are the supply pins for PE4–7 and PF2–3.
The VSS pin and the PVSS1 and PVSS2 pins are connected internally.