24.7.3 Event Control in COUNT32 mode (CTRLA.MODE = 0)

Table 24-6. Register Bit Attribute Legend
SymbolDescriptionSymbolDescriptionSymbolDescription
RReadable bitHCCleared by Hardware(Grey cell)Unimplemented
WWritable bitHSSet by HardwareXBit is unknown at Reset
KWrite to clearSSoftware settable bit
Name: EVCTRL
Offset: 0x04
Reset: 0x00000000
Property: PAC Write-Protection, Enable-Protected

Bit 3130292827262524 
        PERDEO 
Access R/W 
Reset 0 
Bit 2322212019181716 
        TAMPEVEI 
Access R/W 
Reset 0 
Bit 15141312111098 
 OVFEOTAMPEREO    CMPEOn[1:0] 
Access R/WR/WR/WR/W 
Reset 0000 
Bit 76543210 
 PEREO7PEREO6PEREO5PEREO4PEREO3PEREO2PEREO1PEREO0 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 

Bit 24 – PERDEO Periodic Interval Daily Event Output Enable

ValueDescription
0Periodic Daily event is disabled and will not be generated.
1

Periodic Daily event is enabled and will be generated.

The event occurs at the overflow of the RTC counter (i.e., when the RTC counter goes from 0xFFFF to 0x0000).

Bit 16 – TAMPEVEI Tamper Event Input Enable

ValueDescription
0Tamper event input is disabled and incoming events will be ignored.
1Tamper event input is enabled and incoming events will capture the COUNT value.

Bit 15 – OVFEO Overflow Event Output Enable

ValueDescription
0Overflow event is disabled and will not be generated.
1Overflow event is enabled and will be generated for every overflow.

Bit 14 – TAMPEREO Tamper Event Output Enable

ValueDescription
0Tamper event output is disabled and will not be generated.
1Tamper event output is enabled and will be generated for every tamper input.

Bits 9:8 – CMPEOn[1:0] Compare n Event Output Enable [n = 1..0]

ValueDescription
0Compare n event is disabled and will not be generated.
1Compare n event is enabled and will be generated for every compare match.

Bits 0, 1, 2, 3, 4, 5, 6, 7 – PEREOn Periodic Interval n Event Output Enable [n = 7..0]

ValueDescription
0Periodic Interval n event is disabled and will not be generated.
1Periodic Interval n event is enabled and will be generated.