Oscillator Pins (Osc1 And Osc2); External Reset Pin (Rst); External Interrupt Pin (Irq); Analog Power Supply Pin (Vdda ) - Motorola MC68HC908AB32 Technical Data Manual

1.6.2 Oscillator Pins (OSC1 and OSC2)

1.6.3 External Reset Pin (RST)

1.6.4 External Interrupt Pin (IRQ)

1.6.5 Analog Power Supply Pin (V
1.6.6 Analog Ground Pin (V
1.6.7 Analog Ground Pin (A
MC68HC908AB32 Rev. 1.0
—
MOTOROLA
The OSC1 and OSC2 pins are the connections for the on-chip oscillator
circuit. See Section 9. Clock Generator Module
A logic 0 on the RST pin forces the MCU to a known start-up state. RST
is bidirectional, allowing a reset of the entire system. It is driven low when
any internal reset source is asserted. This pin contains an internal pullup
resistor. See Section 8. System Integration Module
IRQ is an asynchronous external interrupt pin. This pin contains an
internal pullup resistor. See
)
DDA
V is the power supply pin for the clock generator module (CGM).
DDA
)
SSA
The V analog ground pin is used only for the ground connections for
SSA
the clock generator module (CGM) section of the circuit and should be
decoupled as per the V
Generator Module
/VREFL)
VSS
The A analog ground pin is used only for the ground connections for
VSS
the analog to digital convertor (ADC) and should be decoupled as per
the V digital ground pin.
SS
General Description
Section 18. External Interrupt
digital ground pin. See
SS
(CGM).
General Description
Pin Functions
(CGM).
(SIM).
(IRQ).
Section 9. Clock
Technical Data
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