參數(shù)資料
型號(hào): PIC16C432T-I/SS
廠商: Microchip Technology
文件頁數(shù): 31/70頁
文件大小: 0K
描述: IC MCU CMOS 8BIT 20MHZ 2K 20SSOP
標(biāo)準(zhǔn)包裝: 1,600
系列: PIC® 16C
核心處理器: PIC
芯體尺寸: 8-位
速度: 20MHz
連通性: LIN(本地互連網(wǎng)絡(luò))
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,WDT
輸入/輸出數(shù): 12
程序存儲(chǔ)器容量: 3.5KB(2K x 14)
程序存儲(chǔ)器類型: OTP
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-SSOP(0.209",5.30mm 寬)
包裝: 帶卷 (TR)
配用: AC164029-ND - MODULE SKT PROMATEII 20DIP/SSOP
2002 Microchip Technology Inc.
Preliminary
DS41140B-page 35
PIC16C432
The code example in Example 7-1 depicts the steps
required to configure the comparator module. RA3 and
RA4 are configured as digital output. RA0 and RA1 are
configured as the V- inputs and RA2 as the V+ input to
both comparators.
EXAMPLE 7-1:
INITIALIZING
COMPARATOR MODULE
7.2
Comparator Operation
A single comparator is shown in Figure 7-2, along with
the relationship between the analog input levels and
the digital output. When the analog input at VIN+ is less
than the analog input VIN-, the output of the comparator
is a digital low level. When the analog input at VIN+ is
greater than the analog input VIN-, the output of the
comparator is a digital high level. The shaded areas of
the output of the comparator in Figure 7-2 represent
the uncertainty due to input offsets and response time.
7.3
Comparator Reference
An external or internal reference signal may be used,
depending on the Comparator Operating mode. The
analog signal that is present at VIN- is compared to the
signal at VIN+, and the digital output of the comparator
is adjusted accordingly (Figure 7-2).
FLAG_REG EQU
0X20
CLRF
FLAG_REG
;Init flag register
CLRF
PORTA
;Init PORTA
MOVF
CMCON,W
;Move comparator contents to W
ANDLW
0xC0
;Mask comparator bits
IORWF
FLAG_REG,F
;Store bits in flag register
MOVLW
0x03
;Init comparator mode
MOVWF
CMCON
;CM<2:0> = 011
BSF
STATUS,RP0
;Select Bank1
MOVLW
0x07
;Initialize data direction
MOVWF
TRISA
;Set RA<2:0> as inputs
;RA<4:3> as outputs
;TRISA<7:5> always read ‘0’
BCF
STATUS,RP0
;Select Bank 0
CALL
DELAY 10
;10ms delay
MOVF
CMCON,F
;Read CMCON toend change condition
BCF
PIR1,CMIF
;Clear pending interrupts
BSF
STATUS,RP0
;Select Bank 1
BSF
PIE1,CMIE
;Enable comparator interrupts
BCF
STATUS,RP0
;Select Bank 0
BSF
INTCON,PEIE
;Enable peripheral interrupts
BSF
INTCON,GIE
;Global interrupt enable
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