RM0091 Comparator (COMP)
Doc ID 018940 Rev 1 219/742
14.4 COMP registers
14.4.1 COMP control and status register (COMP_CSR)
Address offset : 0x1C
Reset value: 0x0000 0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
COMP
2LOCK
COMP
2OUT
COMP2HYST
[1:0]
COMP
2POL
COMP2OUTSEL[2:0]
WNDW
EN
COMP2INSEL[2:0]
COMP2MODE
[1:0]
Res.
COMP2
EN
rwo r rw/r rw/r rw/r rw/r rw/r rw/r rw/r rw/r rw/r rw/r rw/r rw/r rw/r
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
COMP
1LOCK
COMP
1OUT
COMP1HYST
[1:0]
COMP
1POL
COMP1OUTSEL[2:0] Res. COMP1INSEL[2:0]
COMP1MODE
[1:0]
COMP1
SW1
COMP1
EN
rwo r rw/r rw/r rw/r rw/r rw/r rw/r rw/r rw/r rw/r rw/r rw/r rw/r rw/r
Bit 31 COMP2LOCK: Comparator 2 lock
This bit is write-once. It is set by software. It can only be cleared by a system reset.
It allows to have all control bits of comparator 2 as read-only.
0 : COMP_CSR[31:16] bits are read-write.
1 : COMP_CSR[31:16] bits are read-only.
Bit 30 COMP2OUT: Comparator 2 output
This read-only bit is a copy of comparator 2 output state.
0 : Output is low (non-inverting input below inverting input).
1 : Output is high (non-inverting input above inverting input).
Bits 29:28 COMP2HYST[1:0] Comparator 2 hysteresis
These bits control the hysteresis level.
00 : No hysteresis
01 : Low hysteresis
10 : Medium hysteresis
11 : High hysteresis
Please refer to the electrical characteristics for the hysteresis values.
Bit 27 COMP2POL: Comparator 2 output polarity
This bit is used to invert the comparator 2 output.
0 : Output is not inverted
1 : Output is inverted
Bits 26:24 COMP2OUTSEL[2:0]: Comparator 2 output selection
These bits select the destination of the comparator output.
000: No selection
001: Timer 1 break input
010: Timer 1 Input capture 1
011: Timer 1 OCrefclear input
100: Timer 2 input capture 4
101: Timer 2 OCrefclear input
110: Timer 3 input capture 1
111: Timer 3 OCrefclear input
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