DSPIC33FJ64GS606-IPT Datasheet, PDF (343/456 Pages) Microchip Technology – 16-Bit Digital Signal Controllers with High-Speed PWM, ADC and Comparators

dsPIC33FJ32GS406/606/608/610 and dsPIC33FJ64GS406/606/608/610
REGISTER 23-1: CMPCONx: COMPARATOR CONTROL x REGISTER
R/W-0
U-0
R/W-0
U-0
U-0
U-0
CMPON
—
CMPSIDL
r
r
r
bit 15
U-0
R/W-0
r
DACOE
bit 8
R/W-0
R/W-0
R/W-0
U-0
R/W-0
U-0
INSEL<1:0>
EXTREF
r
CMPSTAT
r
bit 7
R/W-0
CMPPOL
R/W-0
RANGE
bit 0
Legend:
R = Readable bit
-n = Value at POR
r = Reserved bit
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
bit 14
bit 13
bit 12-9
bit 8
bit 7-6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
CMPON: Comparator Operating Mode bit
1 = Comparator module is enabled
0 = Comparator module is disabled (reduces power consumption)
Unimplemented: Read as ‘0’
CMPSIDL: Comparator Stop in Idle Mode bit
1 = Discontinues module operation when device enters Idle mode.
0 = Continues module operation in Idle mode
If a device has multiple comparators, any CMPSIDL bit set to ‘1’ disables ALL comparators while in
Idle mode.
Reserved: Read as ‘0’
DACOE: DAC Output Enable
1 = DAC analog voltage is output to DACOUT pin⁽¹⁾
0 = DAC analog voltage is not connected to DACOUT pin
INSEL<1:0>: Input Source Select for Comparator bits
11 = Selects CMPxD input pin
10 = Selects CMPxC input pin
01 = Selects CMPxB input pin
00 = Selects CMPxA input pin
EXTREF: Enable External Reference bit
1 = External source provides reference to DAC (maximum DAC voltage determined by external
voltage source)
0 = Internal reference sources provide reference to DAC (maximum DAC voltage determined by
RANGE bit setting)
Reserved: Read as ‘0’
CMPSTAT: Current State of Comparator Output Including CMPPOL Selection bit
Reserved: Read as ‘0’
CMPPOL: Comparator Output Polarity Control bit
1 = Output is inverted
0 = Output is non-inverted
RANGE: Selects DAC Output Voltage Range bit
1 = High Range: Max DAC Value = AVDD/2, 1.65V at 3.3V AVDD
0 = Low Range: Max DAC Value = INTREF
Note 1: DACOUT can be associated only with a single comparator at any given time. The software must ensure
that multiple comparators do not enable the DAC output by setting their respective DACOE bit.
 2009-2012 Microchip Technology Inc.
DS70591E-page 343