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3. Building and running project
3.5.3
How to enter Sleep Mode
1.
When entering Sleep Mode from Fast Mode (Active Mode), make sure to disable Fast Mode
first and then, enable Sleep Mode.
A.
Fast Mode Disable: CTRL1 &= (~0x80);
B.
Sleep Mode Enable: CTRL2 = 0x04;
2.
When entering Sleep Mode from Fast Mode, the required Delay Time can be adjusted by
configuring the STOP_DELAY register (Default value is 2sec). If a Touch Event is generated
in Sleep Mode, Fast Mode is maintained for the time set in the STOP_DELAY register.
3.
Idle Duty time in Sleep Mode can be adjusted by configuring the PMOD register (Default value
is 300ms).
4.
To the STOP_WAKECL and STOP_WAKEL registers, a basic setting rule is applied. A level
of the STOP_WAKEL register (100%) must be set always higher than the setting level of the
STOP_WAKECL register (50%).
Figure 22. Timing Diagram of Delay Time in Sleep Mode (Snap Mode)
22
AT3108U Demo board quick start guide
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