C8051F020 View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

Manufacturer

C8051F020

8K ISP FLASH MCU Family

Silicon Laboratories 

C8051F020/1

Figure 5.19. 12-Bit ADC0 Window Interrupt Example: Left Justified Differential Data

Input Voltage

(AD0 - AD1)

REF x (2047/2048)

ADC Data

Word

0x7FF0

AD0WINT

not affected

REF x (256/2048)

REF x (-1/2048)

0x1010

0x1000

0x0FF0

0x0000

0xFFF0

0xFFE0

ADC0LTH:ADC0LTL

AD0WINT=1

ADC0GTH:ADC0GTL

Input Voltage

(AD0 - AD1)

REF x (2047/2048)

ADC Data

Word

0x7FF0

AD0WINT=1

REF x (256/2048)

REF x (-1/2048)

0x1010

0x1000

0x0FF0

0x0000

0xFFF0

0xFFE0

ADC0GTH:ADC0GTL

AD0WINT

not affected

ADC0LTH:ADC0LTL

AD0WINT

not affected

-REF

0x8000

Given:

AMX0SL = 0x00, AMX0CF = 0x01,

AD0LJST = ‘1’,

ADC0LTH:ADC0LTL = 0x1000,

ADC0GTH:ADC0GTL = 0xFFF0.

An ADC0 End of Conversion will cause an ADC0

Window Compare Interrupt (AD0WINT = ‘1’) if

the resulting ADC0 Data Word is < 0x1000 and

> 0xFFF0. (Two’s-complement math.)

AD0WINT=1

-REF

0x8000

Given:

AMX0SL = 0x00, AMX0CF = 0x01,

AD0LJST = ‘1’,

ADC0LTH:ADC0LTL = 0xFFF0,

ADC0GTH:ADC0GTL = 0x1000.

An ADC0 End of Conversion will cause an ADC0

Window Compare Interrupt (AD0WINT = ‘1’) if

the resulting ADC0 Data Word is < 0xFFF0 or

> 0x1000. (Two’s-complement math.)

Rev. 1.4

57

Share Link: