Bit7: AD2EN: ADC2 Enable Bit.
0: ADC2 Disabled. ADC2 is in low-power shutdown.
1: ADC2 Enabled. ADC2 is active and ready for data conversions.
Bit6: AD2TM: ADC2 Track Mode Bit.
0: Normal Track Mode: When ADC2 is enabled, tracking is continuous unless a conversion is in
process.
1: Low-power Track Mode: Tracking defined by AD2CM2-0 bits (see below).
Bit5: AD2INT: ADC2 Conversion Complete Interrupt Flag.
This flag must be cleared by software.
0: ADC2 has not completed a data conversion since the last time this flag was cleared.
1: ADC2 has completed a data conversion.
Bit4: AD2BUSY: ADC2 Busy Bit.
Read:
0: ADC2 Conversion is complete or a conversion is not currently in progress. AD2INT is set to
logic 1 on the falling edge of AD2BUSY.
1: ADC2 Conversion is in progress.
Write:
0: No Effect.
1: Initiates ADC2 Conversion if AD2CM2-0 = 000b
Bits3-1: AD2CM2-0: ADC2 Start of Conversion Mode Select.
AD2TM = 0:
000: ADC2 conversion initiated on every write of ‘1’ to AD2BUSY.
001: ADC2 conversion initiated on overflow of Timer 3.
010: ADC2 conversion initiated on rising edge of external CNVSTR2 or CNVSTR0.
011: ADC2 conversion initiated on overflow of Timer 2.
1xx: ADC2 conversion initiated on write of ‘1’ to AD0BUSY (synchronized with ADC0 software-
commanded conversions).
AD2TM = 1:
000: Tracking initiated on write of ‘1’ to AD2BUSY and lasts 3 SAR2 clocks, followed by conver-
sion.
001: Tracking initiated on overflow of Timer 3 and lasts 3 SAR2 clocks, followed by conversion.
010: ADC2 tracks only when CNVSTR2 (or CNVSTR0, See Section 7.2.1) input is logic low; con-
version starts on rising CNVSTR2 edge.
011: Tracking initiated on overflow of Timer 2 and lasts 3 SAR2 clocks, followed by conversion.
1xx: Tracking initiated on write of ‘1’ to AD0BUSY and lasts 3 SAR2 clocks, followed by conver-
sion.
Bit0: AD2WINT: ADC2 Window Compare Interrupt Flag.
0: ADC2 window comparison data match has not occurred since this flag was last cleared.
1: ADC2 window comparison data match has occurred. This flag must be cleared in software.
An important note about external convert start (CNVSTR0 and CNVSTR2)
: If CNVSTR2 is enabled in
the digital crossbar (
Section “17.1. Ports 0 through 3 and the Priority Crossbar Decoder”
on page 204
), CNVSTR2 will be the external convert start signal for ADC2. However, if only
CNVSTR0 is enabled in the digital crossbar and CNVSTR2 is not enabled, then CNVSTR0 may
serve as the start of conversion for both ADC0 and ADC2.
R/W R/W R/W R/W R/W R/W R/W R/W Reset Value
AD2EN AD2TM AD2INT AD2BUSY AD2CM2 AD2CM1 AD2CM0 AD2WINT 00000000
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
SFR Address:
SFR Page:
0xE8
2
