参数资料
型号: MC68HC05CT4FN
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.048 MHz, MICROCONTROLLER, PQCC44
封装: PLASTIC, LCC-44
文件页数: 5/142页
文件大小: 624K
代理商: MC68HC05CT4FN
NON-DISCLOSURE
AGREEMENT
REQUIRED
Comparators
General Release Specification
MC68HC05CT4 Rev. 2.0
102
Comparators
MOTOROLA
CM3IE — Comparator 3 Interrupt Enable
This control bit, when set, allows CMP3 to generate an interrupt when
it goes high.
CEN3 — Comparator 3 Enable
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
tCEN before reading the state of the output or enabling the interrupt.
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.
CEN2 — Comparator 2 Enable
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 tCEN before reading the state of the output. Reset clears this bit.
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.
CEN1 — Comparator 1 Enable
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
tCEN before reading the state of the output. Reset clears this bit.
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.
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