Extended interrupts and event controller (EXTI) RM0453
514/1461 RM0453 Rev 1
16.6.2 EXTI falling trigger selection register (EXTI_FTSR1)
Address offset: 0x004
Reset value: 0x0000 0000
Contains only register bits for configurable events.
Bits 31:23 Reserved, must be kept at reset value.
Bit 22 RT22: rising trigger event configuration bit of configurable event input 22
0: Rising trigger disabled (for event and interrupt) for input line
1: Rising trigger enabled (for event and interrupt) for input line
Note: The configurable event inputs are edge triggered. No glitch must be generated on
these inputs. If a rising edge on the configurable event input occurs while writing to the
register, the associated pending bit is not set.
Rising and falling edge triggers can be set for the same configurable event input. In this
case, both edges generate a trigger.
Bit 21 RT21: rising trigger event configuration bit of configurable event input 21
Bits 20:17 Reserved, must be kept at reset value.
Bit 16 RT16: rising trigger event configuration bit of configurable event input 16
Bit 15 RT15: rising trigger event configuration bit of configurable event input 15
Bit 14 RT14: rising trigger event configuration bit of configurable event input 14
Bit 13 RT13: rising trigger event configuration bit of configurable event input 13
Bit 12 RT12: rising trigger event configuration bit of configurable event input 12
Bit 11 RT11: rising trigger event configuration bit of configurable event input 11
Bit 10 RT10: rising trigger event configuration bit of configurable event input 10
Bit 9 RT9: rising trigger event configuration bit of configurable event input 9
Bit 8 RT8: rising trigger event configuration bit of configurable event input 8
Bit 7 RT7: rising trigger event configuration bit of configurable event input 7
Bit 6 RT6: rising trigger event configuration bit of configurable event input 6
Bit 5 RT5: rising trigger event configuration bit of configurable event input 5
Bit 4 RT4: rising trigger event configuration bit of configurable event input 4
Bit 3 RT3: rising trigger event configuration bit of configurable event input 3
Bit 2 RT2: rising trigger event configuration bit of configurable event input 2
Bit 1 RT1: rising trigger event configuration bit of configurable event input 1
Bit 0 RT0: rising trigger event configuration bit of configurable event input 0
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. Res. Res. Res. Res. Res. FT22 FT21 Res. Res. Res. Res. FT16
rw rw rw
1514131211109876543210
FT15 FT14 FT13 FT12 FT11 FT10 FT9 FT8 FT7 FT6 FT5 FT4 FT3 FT2 FT1 FT0
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
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