30.5.7 ASI Control A

Name: ASI_CTRLA
Offset: 0x09
Reset: 0x03
Property: -

Bit 76543210 
       UPDICLKSEL[1:0] 
Access R/WR/W 
Reset 11 

Bits 1:0 – UPDICLKSEL[1:0] UPDI Clock Divider Select

Writing these bits selects the UPDI clock output frequency. The default setting after Reset and enable is 4 MHz. Any other clock output selection is only recommended when the BOD is at the highest level. For all other BOD settings, the default 4 MHz selection is recommended.

ValueDescription
0x0 Reserved
0x1 16 MHz UPDI clock
0x2 8 MHz UPDI clock
0x3 4 MHz UPDI clock (Default Setting)