Reference Manual ADuCM356
SLEEP AND WAKE-UP TIMER
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2. Set the TMRCON register, Bit 0 to enable the timer wake-up
function.
3. Set the AFE PWRMOD register, Bits[3:1] and the SEQSLP-
LOCK register to 0xA47E5 to enable the sequencer to trigger
sleep.
4. Set the final sequence in the CON register, Bits[3:1]. If only one
sequence is used, select that sequence.
5. Write the sleep time and wake-up time to the SEQxSLEEPH,
SEQxSLEEPL, SEQxWUPH, and SEQxWUPL registers.
6. Use the SEQORDER register to configure the order in which
sequences are triggered.
7. Write 1 to the CON register, Bit 0, to enable the timer.
When Bit 0 of the CON register = 1, the timer loads the values from
the SEQxWUPH and SEQxWUPL registers and begins counting
down. When the timer reaches zero, the device wakes up and
executes sequences in the order specified in the SEQORDER reg-
ister, Bits[1:0]. The timer loads the values from the SEQxSLEEPH
and SEQxSLEEPL registers and begins counting down again when
the sequencer is running. When the timer elapses, the ADuCM356
returns to sleep mode if the TMRCON register, Bit 0 = 1. If the AFE
PWRMOD register, Bit 3 = 1, the ADuCM356 returns to sleep mode
at the end of the last sequence.
The maximum hibernate time is 32 seconds when using the internal
32 kHz oscillator.
To calculate the code for the SEQxWUPx and SEQxSLEEPx regis-
ters, use the following equation:
Code = ClkFreq × Time
where:
Code is the code value for the SEQxWUPx register.
ClkFreq is the frequency of the internal oscillator in Hz.
Time is the required timeout duration in seconds.
SLEEP AND WAKE-UP TIMER REGISTERS
Table 180. Sleep and Wake-Up Timer Registers Summary
Address Name Description Reset Access
0x400C0800 CON Timer control register 0x0000 R/W
0x400C0804 SEQORDER Order control register 0x0000 R/W
0x400C0808 SEQ0WUPL Sequence 0 wake-up time register (LSB) 0xFFFF R/W
0x400C0818 SEQ1WUPL Sequence 1 wake-up time register (LSB) 0xFFFF R/W
0x400C0828 SEQ2WUPL Sequence 2 wake-up time register (LSB) 0xFFFF R/W
0x400C0838 SEQ3WUPL Sequence 3 wake-up time register (LSB) 0xFFFF R/W
0x400C080C SEQ0WUPH Sequence 0 wake-up time register (MSB) 0x000F R/W
0x400C081C SEQ1WUPH Sequence 1 wake-up time register (MSB) 0x000F R/W
0x400C082C SEQ2WUPH Sequence 2 wake-up time register (MSB) 0x000F R/W
0x400C083C SEQ3WUPH Sequence 3 wake-up time register (MSB) 0x000F R/W
0x400C0810 SEQ0SLEEPL Sequence 0 sleep time register (LSB) 0xFFFF R/W
0x400C0820 SEQ1SLEEPL Sequence 1 sleep time register (LSB) 0xFFFF R/W
0x400C0830 SEQ2SLEEPL Sequence 2 sleep time register (LSB)) 0xFFFF R/W
0x400C0840 SEQ3SLEEPL Sequence 3 sleep time register (LSB) 0xFFFF R/W
0x400C0814 SEQ0SLEEPH Sequence 0 sleep time register (MSB) 0x000F R/W
0x400C0824 SEQ1SLEEPH Sequence 1 sleep time register (MSB) 0x000F R/W
0x400C0834 SEQ2SLEEPH Sequence 2 sleep time register (MSB) 0x000F R/W
0x400C0844 SEQ3SLEEPH Sequence 3 sleep time register (MSB) 0x000F R/W
0x400C0A1C TMRCON Timer wake-up configuration register 0x0000 R/W
Timer Control Register
Address: 0x400C0800, Reset: 0x0000, Name: CON
The CON register is the wake-up timer control register.
Table 181. Bit Descriptions for CON Register
Bits Bit Name Settings Description Reset Access
[15:7] Reserved Reserved. 0x0 R
6 MSKTRG Mask Sequence Trigger From Sleep and Wake-Up Timer. This bit masks the sequence trigger from
the sleep and wake-up timer. When the trigger is masked, it does not go to the sequencer.
0x0 R/W
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