11.5.1 Control A

Name: CTRLA
Offset: 0x00
Reset: 0x00
Property: -

Bit 76543210 
 SMODE[1:0]SEN 
Access RRRRRR/WR/WR/W 
Reset 00000000 

Bits 2:1 – SMODE[1:0] Sleep Mode

Writing these bits selects which sleep mode to enter when the Sleep Enable (SEN) bit is written to ‘1’ and the SLEEP instruction is executed.
ValueNameDescription
0x0 IDLE Idle sleep mode enabled
0x1 STANDBY Standby sleep mode enabled
0x2 PDOWN Power-Down sleep mode enabled
other - Reserved

Bit 0 – SEN Sleep Enable

This bit must be written to ‘1’ before the SLEEP instruction is executed to make the MCU enter the selected Sleep mode.