PIC16F688-I/P Microchip Technology Inc., PIC16F688-I/P Datasheet - Page 60
PIC16F688-I/P
Manufacturer Part Number
PIC16F688-I/P
Description
14 PIN, 7 KB FLASH, 256 RAM, 12 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F688-IP.pdf
(202 pages)
Specifications of PIC16F688-I/P
A/d Inputs
8-Channel, 10-Bit
Comparators
2
Cpu Speed
5 MIPS
Eeprom Memory
256 Bytes
Input Output
12
Interface
USART
Memory Type
Flash
Number Of Bits
8
Package Type
14-pin PDIP
Programmable Memory
7K Bytes
Ram Size
256 Bytes
Speed
20 MHz
Timers
1-8-bit, 1-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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PIC16F688
7.3
The CMCON0 register (Register 7-1) provides access
to the following comparator features:
• Mode selection
• Output state
• Output polarity
• Input switch
7.3.1
Each comparator state can always be read internally
via the associated CxOUT bit of the CMCON0 register.
The comparator outputs are directed to the CxOUT
pins when CM<2:0> = 110. When this mode is
selected, the TRIS bits for the associated CxOUT pins
must be cleared to enable the output drivers.
7.3.2
Inverting the output of a comparator is functionally
equivalent to swapping the comparator inputs. The
polarity of a comparator output can be inverted by set-
ting the CxINV bits of the CMCON0 register. Clearing
CxINV results in a non-inverted output. A complete
table showing the output state versus input conditions
and the polarity bit is shown in Table 7-1.
TABLE 7-1:
DS41203C-page 58
Note:
Input Conditions
V
V
V
V
IN
IN
IN
IN
Comparator Control
- > V
- < V
- > V
- < V
COMPARATOR OUTPUT STATE
COMPARATOR OUTPUT POLARITY
CxOUT refers to both the register bit and
output pin.
IN
IN
IN
IN
+
+
+
+
OUTPUT STATE VS. INPUT
CONDITIONS
CxINV
0
0
1
1
CxOUT
0
1
1
0
© 2006 Microchip Technology Inc.
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