参数资料
型号: PIC12F683T-I/MD
厂商: Microchip Technology
文件页数: 129/176页
文件大小: 0K
描述: IC PIC MCU FLASH 2KX14 8DFN
产品培训模块: Asynchronous Stimulus
Digi-Key 应用说明: AN0005 PWM Example with Microchip's CCP Module
AN0005 Example Code
标准包装: 3,300
系列: PIC® 12F
核心处理器: PIC
芯体尺寸: 8-位
速度: 20MHz
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 5
程序存储器容量: 3.5KB(2K x 14)
程序存储器类型: 闪存
EEPROM 大小: 256 x 8
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 2 V ~ 5.5 V
数据转换器: A/D 4x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 8-VDFN 裸露焊盘
包装: 带卷 (TR)
配用: AC164326-ND - MODULA SKT PM3 20QFN
I3-DB12F683-ND - BOARD DAUGHTER ICEPIC3
PIC12F683
DS41211D-page 54
2007 Microchip Technology Inc.
8.4
Comparator Control
The CMCON0 register (Register 8-1) provides access
to the following comparator features:
Mode selection
Output state
Output polarity
Input switch
8.4.1
COMPARATOR OUTPUT STATE
The Comparator state can always be read internally via
the COUT bit of the CMCON0 register. The comparator
state may also be directed to the COUT pin in the
following modes:
CM<2:0> = 001
CM<2:0> = 011
CM<2:0> = 101
When one of the above modes is selected, the associ-
ated TRIS bit of the COUT pin must be cleared.
8.4.2
COMPARATOR OUTPUT POLARITY
Inverting the output of the comparator is functionally
equivalent to swapping the comparator inputs. The
polarity of the comparator output can be inverted by
setting the CINV bit of the CMCON0 register. Clearing
CINV results in a non-inverted output. A complete table
showing the output state versus input conditions and
the polarity bit is shown in Table 8-1.
TABLE 8-1:
OUTPUT STATE VS. INPUT
CONDITIONS
8.4.3
COMPARATOR INPUT SWITCH
The inverting input of the comparator may be switched
between two analog pins in the following modes:
CM<2:0> = 101
CM<2:0> = 110
In the above modes, both pins remain in analog mode
regardless of which pin is selected as the input. The
CIS bit of the CMCON0 register controls the comparator
input switch.
8.5
Comparator Response Time
The comparator output is indeterminate for a period of
time after the change of an input source or the selection
of a new reference voltage. This period is referred to as
the response time. The response time of the
comparator differs from the settling time of the voltage
reference. Therefore, both of these times must be
considered when determining the total response time
to a comparator input change. See the Comparator and
Voltage Reference Specifications in Section 15.0
Input Conditions
CINV
COUT
VIN- > VIN+
00
VIN- < VIN+
01
VIN- > VIN+
11
VIN- < VIN+
10
Note:
COUT refers to both the register bit and
output pin.
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