mc68hc05ct4fn Freescale Semiconductor, Inc, mc68hc05ct4fn Datasheet - Page 102

• Manufacturer Part Number: mc68hc05ct4fn
• Description: Mc68hc05 Family Of Microcontrollers Mcus
• Manufacturer: Freescale Semiconductor, Inc

Comparators
General Release Specification
CM3IE — Comparator 3 Interrupt Enable
CEN3 — Comparator 3 Enable
CEN2 — Comparator 2 Enable
CEN1 — Comparator 1 Enable
This control bit, when set, allows CMP3 to generate an interrupt when
it goes high.
This control bit, when set, powers up the voltage comparator 3 on
PD0. The user must set this bit to allow any functionality of the
comparator. After enabling the comparator, the user should delay for
t
Reset clears this bit.
PD0 remains under control of its DDR bit to enable the user to drive
CMP3+ to a desired level. When CEN3 is cleared, the comparator is
disabled and consumes negligible power.
This control bit, when set, powers up the voltage comparator 2 on
PD2 and PD3. The user must set this bit to allow any functionality of
the comparator. After enabling the comparator, the user should delay
for t
PD2 and PD3 remain under control of their DDR bits to enable the
user to drive CMP2– and CMP12+ to desired levels. When CEN2 is
cleared, the comparator is disabled and consumes negligible power.
This control bit, when set, powers up voltage comparator 1 on PD1
and PD2. The user must set this bit to allow any functionality of the
comparator. After enabling the comparator, the user should delay for
t
PD1 and PD2 remain under control of their DDR bits to enable the
user to drive CMP1– and CMP12+ to desired levels. When CEN1 is
cleared, the comparator is disabled and consumes negligible power.
Freescale Semiconductor, Inc.
CEN
CEN
For More Information On This Product,
CEN
before reading the state of the output or enabling the interrupt.
before reading the state of the output. Reset clears this bit.
before reading the state of the output. Reset clears this bit.
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Comparators
MC68HC05CT4
—
Rev. 2.0