ATtiny1624/1626/1627

CTRLA

Control A

  0x00 8 - 0x00    

Control A

Bit  7 6 5 4 3 2 1 0  
            SMODE[1:0] SEN  
Access  R R R R R R/W R/W R/W  
Reset  0 0 0 0 0 0 0 0  

Bits 2:1 – SMODE[1:0]: Sleep Mode

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

Sleep Enable

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