MC908AS60ACFU Datasheet, PDF (29/414 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Pin Assignments
1.4.5 Analog Power Supply Pin (V_DDA)
V_DDA is the power supply pin for the analog portion of the Clock Generator Module (CGM). See
Chapter 10 Clock Generator Module (CGM).
1.4.6 Analog Ground Pin (V_SSA)
V_SSA is the ground connection for the analog portion of the Clock Generator Module (CGM). See
Chapter 10 Clock Generator Module (CGM).
1.4.7 External Filter Capacitor Pin (CGMXFC)
CGMXFC is an external filter capacitor connection for the Clock Generator Module (CGM). See
Chapter 10 Clock Generator Module (CGM).
1.4.8 ADC Analog Power Supply Pin (V_DDAREF)
V_DDAREF is the power supply pin for the analog portion of the Analog-to-Digital Converter (ADC). See
Chapter 26 Analog-to-Digital Converter (ADC).
1.4.9 ADC Analog Ground Pin (AV_SS/V_REFL)
The AV_SS/V_REFL pin provides both the analog ground connection and the reference low voltage for the
Analog-to-Digital Converter (ADC). See Chapter 26 Analog-to-Digital Converter (ADC).
1.4.10 ADC Reference High Voltage Pin (V_REFH)
V_REFH provides the reference high voltage for the Analog-to-Digital Converter (ADC). See Chapter 26
Analog-to-Digital Converter (ADC).
1.4.11 Port A Input/Output (I/O) Pins (PTA7–PTA0)
PTA7–PTA0 are general-purpose bidirectional I/O port pins. See Chapter 22 Input/Output Ports.
1.4.12 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 Chapter 26 Analog-to-Digital Converter (ADC) and Chapter 22 Input/Output Ports.
1.4.13 Port C I/O Pins (PTC5–PTC0)
PTC5–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 which has a frequency equivalent to the system
clock. See Chapter 22 Input/Output Ports.
1.4.14 Port D I/O Pins (PTD7–PTD0/ATD8)
Port D is an 8-bit special-function port that shares seven of its pins with the Analog-to-Digital Converter
module (ADC-15), one of its pins with the Timer Interface Module A (TIMA), and one more of its pins with
the Timer Interface Module B (TIMB). See Chapter 25 Timer Interface Module A (TIMA), Chapter 20 Timer
Interface Module B (TIMB), Chapter 26 Analog-to-Digital Converter (ADC) and Chapter 22 Input/Output
Ports.
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
Freescale Semiconductor
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