Silicon Laboratories C8051F343 Manuel D’Utilisation

The ADC Programmable Window Detector continuously compares the ADC0 conversion results to 
user-programmed limits, and notifies the system when a desired condition is detected. This is especially 
effective in an interrupt-driven system, saving code space and CPU bandwidth while delivering faster sys-
tem response times. The window detector interrupt flag (AD0WINT in register ADC0CN) can also be used 
in polled mode. The ADC0 Greater-Than (ADC0GTH, ADC0GTL) and Less-Than (ADC0LTH, ADC0LTL) 
registers hold the comparison values. The window detector flag can be programmed to indicate when mea-
sured data is inside or outside of the user-programmed limits, depending on the contents of the ADC0 
Less-Than and ADC0 Greater-Than registers.

The Window Detector registers must be written with the same format (left/right justified, signed/unsigned) 
as that of the current ADC configuration (left/right justified, single-ended/differential).

Bits7–0: High byte of ADC0 Greater-Than Data Word.

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

Reset Value

11111111

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

SFR Address:

0xC4

Bits7–0: Low byte of ADC0 Greater-Than Data Word.

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

Reset Value

11111111

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

SFR Address:

0xC3