23.11.8 Count
The RTC.CNTL and RTC.CNTH register pair represents the 16-bit value, RTC.CNT. The low byte [7:0] (suffix L) is accessible at the original offset. The high byte [15:8] (suffix H) can be accessed at offset + 0x01. For more details on reading and writing 16-bit registers, refer to 8.5.6 Accessing 16-bit Registers.
Due to synchronization between the RTC clock and system clock domains, there is a latency of two RTC clock cycles from updating the register until this has an effect. Application software needs to check that the STATUS.CNTBUSY flag is cleared before writing to this register.
| Name: | CNT |
| Offset: | 0x08 |
| Reset: | 0x00 |
| Property: | - |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| CNT[15:8] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| CNT[7:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Bits 15:8 – CNT[15:8] Counter high byte
These bits hold the MSB of the 16-bit counter register.
Bits 7:0 – CNT[7:0] Counter low byte
These bits hold the LSB of the 16-bit counter register.