收藏本站
PIC16F87XA
DS39582B-page 136
2003 Microchip Technology Inc.
12.1
Comparator Configuration
There are eight modes of operation for the compara-
tors. The CMCON register is used to select these
modes. Figure 12-1 shows the eight possible modes.
The TRISA register controls the data direction of the
comparator pins for each mode. If the Comparator
mode is changed, the comparator output level may not
be valid for the specified mode change delay shown in
Section 17.0 “Electrical Characteristics”.
FIGURE 12-1:
COMPARATOR I/O OPERATING MODES
Note:
Comparator interrupts should be disabled
during
a
Comparator
mode
change.
Otherwise, a false interrupt may occur.
C1
RA0/AN0
VIN-
VIN+
RA3/AN3
Off (Read as ‘0’)
Comparators Reset
A
CM2:CM0 = 000
C2
RA1/AN1
VIN-
VIN+
RA2/AN2
Off (Read as ‘0’)
A
C1
RA0/AN0
VIN-
VIN+
RA3/AN3
C1OUT
Two Independent Comparators
A
CM2:CM0 = 010
C2
RA1/AN1
VIN-
VIN+
RA2/AN2
C2OUT
A
C1
RA0/AN0
VIN-
VIN+
RA3/AN3
C1OUT
Two Common Reference Comparators
A
CM2:CM0 = 100
C2
RA1/AN1
VIN-
VIN+
RA2/AN2
C2OUT
A
D
C2
RA1/AN1
VIN-
VIN+
RA2/AN2
Off (Read as ‘0’)
One Independent Comparator with Output
D
CM2:CM0 = 001
C1
RA0/AN0
VIN-
VIN+
RA3/AN3
C1OUT
A
C1
RA0/AN0
VIN-
VIN+
RA3/AN3
Off (Read as ‘0’)
Comparators Off (POR Default Value)
D
CM2:CM0 = 111
C2
RA1/AN1
VIN-
VIN+
RA2/AN2
Off (Read as ‘0’)
D
C1
RA0/AN0
VIN-
VIN+
RA3/AN3
C1OUT
Four Inputs Multiplexed to Two Comparators
A
CM2:CM0 = 110
C2
RA1/AN1
VIN-
VIN+
RA2/AN2
C2OUT
A
From Comparator
CIS = 0
CIS = 1
CIS = 0
CIS = 1
C1
RA0/AN0
VIN-
VIN+
RA3/AN3
C1OUT
Two Common Reference Comparators with Outputs
A
CM2:CM0 = 101
C2
RA1/AN1
VIN-
VIN+
RA2/AN2
C2OUT
A
D
A = Analog Input, port reads zeros always. D = Digital Input. CIS (CMCON<3>) is the Comparator Input Switch.
CVREF
C1
RA0/AN0
VIN-
VIN+
RA3/AN3
C1OUT
Two Independent Comparators with Outputs
A
CM2:CM0 = 011
C2
RA1/AN1
VIN-
VIN+
RA2/AN2
C2OUT
A
RA4/T0CKI/C1OUT
RA5/AN4/SS/C2OUT
RA4/T0CKI/C1OUT
RA5/AN4/SS/C2OUT
RA4/T0CKI/C1OUT
VREF Module
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
AT87C51RD2-3CSUM IC 8051 MCU 64K OTP 40MHZ 40DIP
DSPIC33FJ64MC802-I/SO IC DSPIC MCU/DSP 64K 28-SOIC
DSPIC33FJ64GP802-I/MM IC DSPIC MCU/DSP 64K 28-QFN
AT87C51RD2-3CSUL IC 8051 MCU 64K OTP 30MHZ 40DIP
PIC18F2431-I/SP IC PIC MCU FLASH 8KX16 28DIP
AT87C51RC2-SLSUM IC 8051 MCU 32K OTP 40MHZ 44PLCC
PIC18F2520-I/ML IC PIC MCU FLASH 16KX16 28QFN
AT87C51RC2-SLSUL IC 8051 MCU 32K OTP 30MHZ 44PLCC
相关代理商/技术参数
PIC16F876A-I/SP 制造商:Microchip Technology Inc 功能描述:IC 8BIT FLASH MCU 16F876 SDIL28
PIC16F876A-I/SPG 功能描述:8位微控制器 -MCU 14KB 368 RAM 22 I/O RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC16F876A-I/SS 功能描述:8位微控制器 -MCU 14KB 368 RAM 22 I/O RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC16F876A-I/SS 制造商:Microchip Technology Inc 功能描述:8BIT FLASH MCU SMD 16F876 SSOP28
PIC16F876A-I/SSG 功能描述:8位微控制器 -MCU 14KB 368 RAM 22 I/O RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC16F876AISP 制造商:Microchip Technology Inc 功能描述:
PIC16F876AISS 制造商:MICROCHIP 功能描述:IC, MICRO CONTROLLER SSOP28
PIC16F876AT-E/ML 功能描述:8位微控制器 -MCU 20MHz 8K Flash RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT