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參數(shù)資料
型號: W79E804A
廠商: WINBOND ELECTRONICS CORP
元件分類: 8位微控制器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁數(shù): 84/115頁
文件大小: 1456K
代理商: W79E804A
W79E804A/803A/802A
- 84 -
19. ANALOG COMPARATORS
The W79E804 series are provided two Comparators. Input and output options allow use of the
comparators in a number of different Configurations. The Comparator output is a logical one when its
positive input is greater than its negative input. Otherwise, the output is a zero. Each Comparator can
be configured to cause to an interrupt when the output value change. The block diagram is as below.
Each Comparator has a control register (CMP1 and CMP2), Both Inputs are CINnA, CINnB, CMPREF
and internal reference voltage, and outputs are CMP1 and CMP2 by setting OEn bit. After enable
Comparators the Comparator need waited stable time to guarantee Comparator output. If programmer
used internal reference voltage, it will be set OEn bit to “1”. The value of internal reference voltage
(Vref) is 1.19V +/- 10%.
-
+
CMF1
CMP1(P0.6)
Interrupt
CN1
CP1
Vref
CO1
OE1
Change Detect
Comparator1
(P0.4) CIN1A
(P0.3) CIN1B
(P0.5) CMPREF
-
+
CMF2
CMP2(P0.0)
Interrupt
CN2
CP2
CO2
OE2
Change Detect
Comparator2
(P0.2) CIN2A
(P0.1) CIN2B
CMP1 Analog Circuit
CMP2 Analog Circuit
Vref
CE1
CE2
Enable CMP1
Enable CMP2
En
Figure
19-1: Analog Comparators
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