19.7.2 SHDWC Mode Register
| Name: | SHDW_MR |
| Offset: | 0x04 |
| Reset: | 0x00000000 |
| Property: | Read/Write |
This register can only be written if the WPEN bit is cleared in the System Controller Write Protection Mode register (SYSC_WPMR).
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| WKUPDBC[2:0] | |||||||||
| Access | R/W | R/W | R/W | ||||||
| Reset | 0 | 0 | 0 | ||||||
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| RTCWKEN | RTTWKEN | ||||||||
| Access | R/W | R/W | |||||||
| Reset | 0 | 0 |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| Access | |||||||||
| Reset |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| Access | |||||||||
| Reset |
Bits 26:24 – WKUPDBC[2:0] Wake-up Inputs Debouncer Period
| Value | Name | Description |
|---|---|---|
| 0 | IMMEDIATE | Immediate, no debouncing, detected active at least on one MD_SLCK edge |
| 1 | 3_SLCK | WKUP shall be in its active state for at least 3 MD_SLCK periods |
| 2 | 32_SLCK | WKUP shall be in its active state for at least 32 MD_SLCK periods |
| 3 | 512_SLCK | WKUP shall be in its active state for at least 512 MD_SLCK periods |
| 4 | 4096_SLCK | WKUP shall be in its active state for at least 4,096 MD_SLCK periods |
| 5 | 32768_SLCK | WKUP shall be in its active state for at least 32,768 MD_SLCK periods |
Bit 17 – RTCWKEN Real-time Clock Wake-up Enable
| Value | Description |
|---|---|
| 0 | The RTC Alarm signal has no effect on the SHDWC. |
| 1 | The RTC Alarm signal forces the de-assertion of the SHDN pin. |
Bit 16 – RTTWKEN Real-time Timer Wake-up Enable
| Value | Description |
|---|---|
| 0 | The RTT Alarm signal has no effect on the SHDWC. |
| 1 | The RTT Alarm signal forces the de-assertion of the SHDN pin. |