MC68HC705C9ACB MOTOROLA [Motorola, Inc], MC68HC705C9ACB Datasheet - Page 34

• Manufacturer Part Number: MC68HC705C9ACB
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

General Description
1.7.3 IRQ
1.7.4 OSC1 andOSC2
1.7.5 RESET
1.7.6 TCAP
1.7.7 TCMP
Advance Information
34
This interrupt pin has an option that provides two different choices of
interrupt triggering sensitivity. The IRQ pin contains an internal Schmitt
trigger as part of its input to improve noise immunity. Refer to
Section 4. Interrupts
These pins provide control input for an on-chip clock oscillator circuit. A
crystal connected to these pins provides a system clock. The internal
frequency is one-half the crystal frequency.
As an input pin, this active low RESET pin is used to reset the MCU to a
known startup state by pulling RESET low. As an output pin, when in
MC68HC05C9A mode only, the RESET pin indicates that an internal
MCU reset has occurred. The RESET pin contains an internal Schmitt
trigger as part of its input to improve noise immunity. Refer to
Section 5. Resets
This pin controls the input capture feature for the on-chip programmable
timer. The TCAP pin contains an internal Schmitt trigger as part of its
input to improve noise immunity. Refer to
Timer
The TCMP pin provides an output for the output compare feature of the
on-chip programmable timer. Refer to
Timer
Freescale Semiconductor, Inc.
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Go to: www.freescale.com
General Description
for more detail.
for more detail.
Section 8. Capture/Compare
Section 8. Capture/Compare
MC68HC705C9A — Rev. 4.0
MOTOROLA