參數(shù)資料
型號(hào): μPD789407
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機(jī)微控制器(8位單片微控制器)
文件頁數(shù): 60/128頁
文件大?。?/td> 607K
代理商: ΜPD789407
60
μ
PD789405, 789406, 789407
5.8 Comparator
5.8.1 Comparator functions
The comparator has the following functions.
(1) Input voltage comparison
The comparator compares an input voltage at the reference voltage input pin (CMPREF0) with an input voltage
at the comparator input pin (CMPIN0). The comparison result can be read using memory manipulation
instructions.
(2) Interrupt generation
The comparator output (selectable with a rising and/or falling edge) is used to generate an interrupt request
signal (INTCMP).
(3) Clock output
When CMPREF0 > CMPIN0, the output of 8-bit timer counter 2 (TM2) is directed to the CMPTOUT0 pin.
(4) Open-drain output selection
The comparator mode register (CMPRM0) is used to specify a port as an open-drain output.
5.8.2 Comparator configuration
The comparator consists of the following hardware.
(1) CMPIN0
This is the comparator input pin.
(2) CMPTOUT0
This is the comparator output pin.
(3) CMPREF0
This is the comparator reference voltage input pin.
Figure 5-28 is a block diagram of the comparator.
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