ATSAML21J17B AC registers

The 15 registers of AC (Analog Comparators), from 0x43001000, with their reset value and every field. The ATSAML21J17B has 1323 registers in 42 peripherals, one page each.

AC Analog Comparators

CTRLAControl A

Address
0x43001000
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2–
  7. 1ENABLE
  8. 0SWRST
2 fields
FieldBitsWhat it does
ENABLE1Enable
SWRST0Software Reset

CTRLBControl B

Address
0x43001001
Reset
0x00
Access
write only
  1. 7–
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2–
  7. 1START1
  8. 0START0
2 fields
FieldBitsWhat it does
START11Comparator 1 Start Comparison
START00Comparator 0 Start Comparison

EVCTRLEvent Control

Address
0x43001002
Reset
0x0000
Access
read/write
Size
16-bit
7 fields
FieldBitsWhat it does
INVEI113Comparator 1 Input Event Invert Enable
INVEI012Comparator 0 Input Event Invert Enable
COMPEI19Comparator 1 Event Input Enable
COMPEI08Comparator 0 Event Input Enable
WINEO04Window 0 Event Output Enable
COMPEO11Comparator 1 Event Output Enable
COMPEO00Comparator 0 Event Output Enable

INTENCLRInterrupt Enable Clear

Address
0x43001004
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4WIN0
  5. 3–
  6. 2–
  7. 1COMP1
  8. 0COMP0
3 fields
FieldBitsWhat it does
WIN04Window 0 Interrupt Enable
COMP11Comparator 1 Interrupt Enable
COMP00Comparator 0 Interrupt Enable

INTENSETInterrupt Enable Set

Address
0x43001005
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4WIN0
  5. 3–
  6. 2–
  7. 1COMP1
  8. 0COMP0
3 fields
FieldBitsWhat it does
WIN04Window 0 Interrupt Enable
COMP11Comparator 1 Interrupt Enable
COMP00Comparator 0 Interrupt Enable

INTFLAGInterrupt Flag Status and Clear

Address
0x43001006
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4WIN0
  5. 3–
  6. 2–
  7. 1COMP1
  8. 0COMP0
3 fields
FieldBitsWhat it does
WIN04Window 0
COMP11Comparator 1
COMP00Comparator 0

STATUSAStatus A

Address
0x43001007
Reset
0x00
Access
read only
  1. 7–
  2. 6–
  3. 5WSTATE01
  4. 4WSTATE00
  5. 3–
  6. 2–
  7. 1STATE1
  8. 0STATE0
3 fields
FieldBitsWhat it does
WSTATE05:4Window 0 Current State
  • 0 Signal is above window
  • 1 Signal is inside window
  • 2 Signal is below window
STATE11Comparator 1 Current State
STATE00Comparator 0 Current State

STATUSBStatus B

Address
0x43001008
Reset
0x00
Access
read only
  1. 7–
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2–
  7. 1READY1
  8. 0READY0
2 fields
FieldBitsWhat it does
READY11Comparator 1 Ready
READY00Comparator 0 Ready

DBGCTRLDebug Control

Address
0x43001009
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2–
  7. 1–
  8. 0DBGRUN
1 field
FieldBitsWhat it does
DBGRUN0Debug Run

WINCTRLWindow Control

Address
0x4300100A
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5–
  4. 4–
  5. 3–
  6. 2WINTSEL01
  7. 1WINTSEL00
  8. 0WEN0
2 fields
FieldBitsWhat it does
WINTSEL02:1Window 0 Interrupt Selection
  • 0 Interrupt on signal above window
  • 1 Interrupt on signal inside window
  • 2 Interrupt on signal below window
  • 3 Interrupt on signal outside window
WEN00Window 0 Mode Enable

SCALER0Scaler n

Address
0x4300100C
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5VALUE5
  4. 4VALUE4
  5. 3VALUE3
  6. 2VALUE2
  7. 1VALUE1
  8. 0VALUE0
1 field
FieldBitsWhat it does
VALUE5:0Scaler Value

SCALER1Scaler n

Address
0x4300100D
Reset
0x00
Access
read/write
  1. 7–
  2. 6–
  3. 5VALUE5
  4. 4VALUE4
  5. 3VALUE3
  6. 2VALUE2
  7. 1VALUE1
  8. 0VALUE0
1 field
FieldBitsWhat it does
VALUE5:0Scaler Value

COMPCTRL0Comparator Control n

Address
0x43001010
Reset
0x00000000
Access
read/write
Size
32-bit
12 fields
FieldBitsWhat it does
OUT29:28Output
  • 0 The output of COMPn is not routed to the COMPn I/O port
  • 1 The asynchronous output of COMPn is routed to the COMPn I/O port
  • 2 The synchronous output (including filtering) of COMPn is routed to the COMPn I/O port
FLEN26:24Filter Length
  • 0 No filtering
  • 1 3-bit majority function (2 of 3)
  • 2 5-bit majority function (3 of 5)
HYST21:20Hysteresis Level
  • 0 50mV
  • 1 70mV
  • 2 90mV
  • 3 110mV
HYSTEN19Hysteresis Enable
SPEED17:16Speed Selection
  • 0 Low speed
  • 1 Medium low speed
  • 2 Medium high speed
  • 3 High speed
SWAP15Swap Inputs and Invert
MUXPOS14:12Positive Input Mux Selection
  • 0 I/O pin 0
  • 1 I/O pin 1
  • 2 I/O pin 2
  • 3 I/O pin 3
  • 4 VDD Scaler
MUXNEG10:8Negative Input Mux Selection
  • 0 I/O pin 0
  • 1 I/O pin 1
  • 2 I/O pin 2
  • 3 I/O pin 3
  • 4 Ground
  • 5 VDD scaler
  • 6 Internal bandgap voltage
  • 7 DAC output
RUNSTDBY6Run in Standby
INTSEL4:3Interrupt Selection
  • 0 Interrupt on comparator output toggle
  • 1 Interrupt on comparator output rising
  • 2 Interrupt on comparator output falling
  • 3 Interrupt on end of comparison (single-shot mode only)
SINGLE2Single-Shot Mode
ENABLE1Enable

COMPCTRL1Comparator Control n

Address
0x43001014
Reset
0x00000000
Access
read/write
Size
32-bit
12 fields
FieldBitsWhat it does
OUT29:28Output
  • 0 The output of COMPn is not routed to the COMPn I/O port
  • 1 The asynchronous output of COMPn is routed to the COMPn I/O port
  • 2 The synchronous output (including filtering) of COMPn is routed to the COMPn I/O port
FLEN26:24Filter Length
  • 0 No filtering
  • 1 3-bit majority function (2 of 3)
  • 2 5-bit majority function (3 of 5)
HYST21:20Hysteresis Level
  • 0 50mV
  • 1 70mV
  • 2 90mV
  • 3 110mV
HYSTEN19Hysteresis Enable
SPEED17:16Speed Selection
  • 0 Low speed
  • 1 Medium low speed
  • 2 Medium high speed
  • 3 High speed
SWAP15Swap Inputs and Invert
MUXPOS14:12Positive Input Mux Selection
  • 0 I/O pin 0
  • 1 I/O pin 1
  • 2 I/O pin 2
  • 3 I/O pin 3
  • 4 VDD Scaler
MUXNEG10:8Negative Input Mux Selection
  • 0 I/O pin 0
  • 1 I/O pin 1
  • 2 I/O pin 2
  • 3 I/O pin 3
  • 4 Ground
  • 5 VDD scaler
  • 6 Internal bandgap voltage
  • 7 DAC output
RUNSTDBY6Run in Standby
INTSEL4:3Interrupt Selection
  • 0 Interrupt on comparator output toggle
  • 1 Interrupt on comparator output rising
  • 2 Interrupt on comparator output falling
  • 3 Interrupt on end of comparison (single-shot mode only)
SINGLE2Single-Shot Mode
ENABLE1Enable

SYNCBUSYSynchronization Busy

Address
0x43001020
Reset
0x00000000
Access
read only
Size
32-bit
5 fields
FieldBitsWhat it does
COMPCTRL14COMPCTRL 1 Synchronization Busy
COMPCTRL03COMPCTRL 0 Synchronization Busy
WINCTRL2WINCTRL Synchronization Busy
ENABLE1Enable Synchronization Busy
SWRST0Software Reset Synchronization Busy