MC68HC08AS32 Datasheet, PDF (37/394 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

General Description
Pin Assignments
1.5.7 Analog Ground Pin (V_SSA/V_REFL)
The V_SSA/V_REFL analog ground pin is used only for the ground
connections for the analog sections of the circuit and should be
decoupled as per the V_SS digital ground pin. The analog sections consist
of a clock generator module (CGM) and an analog-to-digital converter
(ADC). V_SSA/V_REFL is also the lower reference supply for the ADC. (See
Section 8. Clock Generator Module (CGM) and Section 19. Analog-
to-Digital Converter (ADC).)
1.5.8 External Filter Capacitor Pin (CGMXFC)
CGMXFC is an external filter capacitor connection for the CGM. (See
Section 8. Clock Generator Module (CGM).)
1.5.9 Port A Input/Output (I/O) Pins (PTA7–PTA0)
PTA7–PTA0 are general-purpose bidirectional I/O port pins. (See
Section 15. Input/Output (I/O) Ports.)
1.5.10 Port B I/O Pins (PTB7/ATD7–PTB0/ATD0)
Port B is an 8-bit special function port that shares all eight pins with the
analog-to-digital converter (ADC). (See Section 19. Analog-to-Digital
Converter (ADC) and Section 15. Input/Output (I/O) Ports.)
1.5.11 Port C I/O Pins (PTC4–PTC0)
PTC4–PTC3 and PTC1–PTC0 are general-purpose bidirectional I/O
port pins. PTC2/MCLK is a special function port that shares its pin with
the system clock. (See Section 15. Input/Output (I/O) Ports.)
MC68HC08AS32 — Rev. 3.0
MOTOROLA
General Description
Advance Information
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