参数资料
型号: PIC16C620A-04/P301
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 4 MHz, RISC MICROCONTROLLER, PDIP18
封装: 0.300 INCH, PLASTIC, DIP-18
文件页数: 40/108页
文件大小: 674K
代理商: PIC16C620A-04/P301
1998 Microchip Technology Inc.
Preliminary
DS30235G-page 37
PIC16C62X
7.0
COMPARATOR MODULE
The
comparator
module
contains
two
analog
comparators. The inputs to the comparators are
multiplexed with the RA0 through RA3 pins. The
on-chip Voltage Reference (Section 8.0) can also be an
input to the comparators.
The CMCON register, shown in Figure 7-1, controls the
comparator input and output multiplexers. A block
diagram of the comparator is shown in Figure 7-2.
FIGURE 7-1:
CMCON REGISTER (ADDRESS 1Fh)
R-0
U-0
R/W-0
C2OUT
C1OUT
CIS
CM2
CM1
CM0
R = Readable bit
W = Writable bit
U = Unimplemented bit,
read as ‘0’
- n =Value at POR reset
bit7
bit0
bit 7:
C2OUT: Comparator 2 output
1 = C2 VIN+ > C2 VIN
0 = C2 VIN+ < C2 VIN
bit 6:
C1OUT: Comparator 1 output
1 = C1 VIN+ > C1 VIN
0 = C1 VIN+ < C1 VIN
bit 5-4:
Unimplemented: Read as '0'
bit 3:
CIS: Comparator Input Switch
When CM<2:0>: = 001:
1 = C1 VIN– connects to RA3
0 = C1 VIN– connects to RA0
When CM<2:0> = 010:
1 = C1 VIN– connects to RA3
C2 VIN– connects to RA2
0 = C1 VIN– connects to RA0
C2 VIN– connects to RA1
bit 2-0:
CM<2:0>: Comparator mode
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