C8051F02X Datasheet, PDF (73/272 Pages) Silicon Laboratories – 8K ISP FLASH MCU Family

C8051F022/3
Figure 6.19. 10-Bit ADC0 Window Interrupt Example: Left Justified Differential Data
Input Voltage
(AD0 - AD1)
REF x (511/512)
ADC Data
Word
0x7FC0
ADWINT
not affected
REF x (128/512)
REF x (-1/512)
0x2040
0x2000
0x1FC0
0x0000
0xFFC0
0xFF80
ADC0LTH:ADC0LTL
ADWINT=1
ADC0GTH:ADC0GTL
Input Voltage
(AD0 - AD1)
REF x (511/512)
ADC Data
Word
0x7FC0
ADWINT=1
REF x (128/512)
REF x (-1/512)
0x2040
0x2000
0x1FC0
0x0000
0xFFC0
0xFF80
ADC0GTH:ADC0GTL
ADWINT
not affected
ADC0LTH:ADC0LTL
ADWINT
not affected
-REF
0x8000
Given:
AMX0SL = 0x00, AMX0CF = 0x01, ADLJST = 1,
ADC0LTH:ADC0LTL = 0x2000,
ADC0GTH:ADC0GTL = 0xFFC0.
An ADC End of Conversion will cause an ADC
Window Compare Interrupt (ADWINT=1) if the
resulting ADC Data Word is < 0x2000 and
> 0xFFC0. (Two’s-complement math.)
ADWINT=1
-REF
0x8000
Given:
AMX0SL = 0x00, AMX0CF = 0x01, ADLJST = 1,
ADC0LTH:ADC0LTL = 0xFFC0,
ADC0GTH:ADC0GTL = 0x2000.
An ADC End of Conversion will cause an ADC
Window Compare Interrupt (ADWINT=1) if the
resulting ADC Data Word is < 0xFFC0 or
> 0x2000. (Two’s-complement math.)
Rev. 1.4
73