Rtc Tamper And Alternate Function Configuration Register; (Rtc_Tafcr) - ST STM32F207 Series Reference Manual

RM0033
22.6.13

RTC tamper and alternate function configuration register

(RTC_TAFCR)

Address offset: 0x40
Backup domain reset value: 0x0000 0000
System reset: not affected
31 30 29 28
15 14 13 12
Bits 31:19 Reserved. Always read as 0.
Bit 18 ALARMOUTTYPE: AFO_ALARM output type
Bit 17 TSINSEL: TIMESTAMP mapping
Bit 16 TAMP1INSEL: TAMPER1 mapping
Note: TAMP1E must be reset when TAMP1INSEL is changed to avoid unwanted setting of
Bit 15:3 Reserved. Always read as 0.
Bit 2 TAMPIE: Tamper interrupt enable
Bit 1 TAMP1TRG: Active level for tamper 1
Bit 0 TAMP1E: Tamper 1 detection enable
27 26 25
Reserved
11 10 9
Reserved
0: ALARM_AF0 is an open-drain output
1: ALARM_AF0 is a push-pull output
0: RTC_AF1 used as TIMESTAMP
1: RTC_AF2 used as TIMESTAMP
0: RTC_AF1 used as TAMPER
1: RTC_AF2 used as TAMPER
TAMP1F.
0: Tamper interrupt disabled
1: Tamper interrupt enabled
if TAMPFLT = 000: TAMPER1 rising edge triggers a tamper detection event.
1: TAMPER1 falling edge triggers a tamper detection event.
0: Tamper 1 detection disabled
1: Tamper 1 detection enabled
24 23 22 21
8 7 6 5
RM0033 Rev 9
Real-time clock (RTC)
20 19 18
ALARMOUT
TYPE
rw
4 3 2
TAMP1
TAMPIE
rw
17 16
TSIN TAMP1
SEL INSEL
rw rw
1 0
TAMP1
TRG E
rw rw
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