Register Descriptions; Exti Interrupt Configuration Register N - Exticfgrn, N = 0 ~ 15 - Holtek HT32F12345 User Manual

32-Bit Arm ® Cortex ® -M3 MCU
HT32F12345

Register Descriptions

EXTI Interrupt Configuration Register n – EXTICFGRn, n = 0 ~ 15
This register is used to specify the de-bounce function and select the trigger type.
Offset: 0x000 (0) ~ 0x03C (15)
Reset value: 0x0000_0000
31
DBnEN
Type/Reset RW 0 RW
23
Type/Reset
15
Type/Reset RW 0 RW
7
Type/Reset RW 0 RW
Bits Field
[31] DBnEN
[30:28] SRCnTYPE
[15:0] DBnCNT
Rev. 1.10
30 29 28
SRCnTYPE
0 RW 0 RW
22 21 20
14 13 12
0 RW 0 RW
6 5 4
0 RW 0 RW
Descriptions
EXTIn De-bounce Circuit Enable Bit (n = 0 ~ 15)
0: De-bounce circuit is disabled
1: De-bounce circuit is enabled
EXTIn Interrupt Source Trigger Type (n = 0 ~ 15)
SRCnTYPE [2:0]
0 0 0 Low-level Sensitive
0 0 1 High-level Sensitive
0 1 0 Negative-edge Triggered
0 1 1 Positive-edge Triggered
1 X X Both-edge Triggered
EXTIn De-bounce Counter (n = 0 ~ 15)
The de-bounce time is calculated with DBnCNT × APB clock (EXTI_PCLK) period
and should be long enough to take effect on the input signal.
175 of 590
27 26
Reserved
0
19 18
Reserved
11 10
DBnCNT
0 RW 0 RW 0 RW
3 2
DBnCNT
0 RW 0 RW 0 RW
Interrupt Source Type
25 24
17 16
9 8
0 RW 0
1 0
0 RW 0
November 28, 2018