参数资料
型号: RFPIC12F675F-I/SS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 20 MHz, RISC MICROCONTROLLER, PDSO20
封装: 0.209 INCH, PLASTIC, MO-150, SSOP-20
文件页数: 55/123页
文件大小: 5438K
代理商: RFPIC12F675F-I/SS
2003 Microchip Technology Inc.
Preliminary
DS70091A-page 35
rfPIC12F675
6.2
Comparator Configuration
There are eight modes of operation for the comparator.
The CMCON register, shown in Register 6-1, is used to
select the mode. Figure 6-2 shows the eight possible
modes. The TRISIO 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 a specified period of time.
Refer to the specifications in Section 13.0.
FIGURE 6-2:
COMPARATOR I/O OPERATING MODES
Note:
Comparator interrupts should be disabled
during a Comparator mode change. Other-
wise, a false interrupt may occur.
Comparator Reset (POR Default Value - low power)
Comparator Off (Lowest power)
CM2:CM0 = 000
CM2:CM0 = 111
Comparator without Output
Comparator w/o Output and with Internal Reference
CM2:CM0 = 010
CM2:CM0 = 100
Comparator with Output and Internal Reference
Multiplexed Input with Internal Reference and Output
CM2:CM0 = 011
CM2:CM0 = 101
Comparator with Output
Multiplexed Input with Internal Reference
CM2:CM0 = 001
CM2:CM0 = 110
A = Analog Input, ports always reads ‘0’
D = Digital Input
CIS = Comparator Input Switch (CMCON<3>)
GP1/CIN-
GP0/CIN+
Off (Read as '0')
A
GP2/COUT
D
GP1/CIN-
GP0/CIN+
Off (Read as '0')
D
GP2/COUT
D
GP1/CIN-
GP0/CIN+
COUT
A
GP2/COUT
D
GP1/CIN-
GP0/CIN+
COUT
A
D
GP2/COUT
D
From CV
REF Module
GP1/CIN-
GP0/CIN+
COUT
A
D
GP2/COUT
D
From CV
REF Module
GP1/CIN-
GP0/CIN+
COUT
A
GP2/COUT
D
From CV
REF Module
CIS = 0
CIS = 1
GP1/CIN-
GP0/CIN+
COUT
A
GP2/COUT
D
GP1/CIN-
GP0/CIN+
COUT
A
GP2/COUT
D
From CV
REF Module
CIS = 0
CIS = 1
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