ISD91200 Series Technical Reference Manual
Release Date: Sep 16, 2019
- 217 -
Revision 2.4
RTC Time-Tick Register (RTC_TICK)
Register
Offset
R/W
Description
Reset Value
RTC_TICK
0x030 R/W
RTC Time Tick Register
0x0000_0000
7
6
5
4
3
2
1
0
Reserved
TWKEN
TICKSEL
Table 5-90 RTC Time-Tick Register (RTC_TICK, address 0x4000_8030).
Bits
Description
[31:4]
Reserved
Reserved.
[3]
TWKEN
RTC Timer Wakeup CPU Function Enable Bit
If TWKE is set before CPU is in power-down mode, when a RTC Time-Tick or Alarm
Match occurs, CPU will wake up.
0= Disable Wakeup CPU function.
1= Enable the Wakeup function.
[2:0]
TICKSEL
Time Tick Period Select
The RTC time tick period for Periodic Time-Tick Interrupt request.
Time Tick (second) : 1 / (2^TTR)
Note: This register can be read back after the RTC is active.