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參數(shù)資料
| 型號： | EM78450 |
| 英文描述： | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0°C to 70°C; Package: 16-QFN |
| 中文描述： | 8位微控制器的通用產(chǎn)品 |
| 文件頁數(shù)： | 35/57頁 |
| 文件大?。?/td> | 854K |
| 代理商： | EM78450 |
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EM78458/459
MASK ROM
This specification is subject to change without prior notice.
2002/03/01
40
The compared result is stored in the CMPOUT of R3.
The comparator outputs is output to P57 by programming bit5<COE> of the AD-CMPCON register
to 1.
P57 must be defined as an output if implemented as the comparator output.
Fig. 17 shows the comparator output block diagram.
Q
EN
D
To C0
To CPIF
To CMPOUT
CMRD
From other
comparator
RESET
From OP I/O
Fig. 17 The Output Configuration of a Comparator
3. Using as An Operation Amplifier
The comparator can be used as an operation amplifier if a feedback resistor is connected from the
input to the output externally. In this case, the Schmitt trigger can be disabled for power saving by
setting CE to 1 and COE to 0.
4. Interrupt
CMPIE (IOCF0.6) must be enabled.
Interrupt occurs at the rising edge of the comparator output pin.
The actual change on the pin can be determined by reading the Bit CMPOUT, R3<7>.
CMPIF (RF.6), the comparator interrupt flag, can only be cleared by software.
5. Wake-up from SLEEP Mode
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