SN8P2318 Series
C-type LCD, RFC 8-Bit Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 58
Version 1.5
Example: In power down mode (sleep mode), the system is waked up. After the wakeup time, the system
goes into normal mode. The wakeup time is as the following.
The wakeup time = 1/Flosc * (2
14
+256 ) = 0.52 sec (32KHz crystal)
The total wakeup time = 0.52 sec + oscillator start-up time
The wake-up time of the internal high-speed PLL 16MHz oscillator is as the following.
The Wakeup time of 32KHz RC type oscillator mode = 1/Flosc * 288 (sec) + clock start-up time
The Wakeup time of 32KHz crystal type oscillator mode = 1/Flosc * (2
14
+256) (sec) + clock start-up time
Example: In power down mode (sleep mode), the system is waked up. After the wakeup time, the system
goes into normal mode. The wakeup time is as the following.
The wakeup time = 1/Flosc * 288 = 9 ms (32KHz RC)
The total wakeup time = 9 ms + oscillator start-up time
The wakeup time = 1/Flosc * (2
14
+256) = 0.52 sec (32KHz crystal)
The total wakeup time = 0.52 sec + oscillator start-up time
Note: The high clock start-up time is depended on the VDD and oscillator type of high clock.