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C8051F041-GQ

Part #	C8051F041-GQ
Description	MCU 8BIT CISC 64KB FLASH 3V 64TQFP - Trays
Category	IC
Availability	In Stock
Qty	2

Qty	Price
1 +	$20.05559

Manufacturer	Available	Qty
SILICON LABORATORIES Date Code: 0903	Freelance Stock: 2 Ships Immediately

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Technical Document

DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

C8051F040/1/2/3/4/5/6/7

Rev. 1.5 85

SFR Definition 6.12. ADC0LTL: ADC0 Less-Than Data Low Byte

Figure 6.8. 10-Bit ADC0 Window Interrupt Example:

Right Justified Single-Ended Data

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

R/W R/W R/W R/W R/W R/W R/W R/W Reset Value

00000000

Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0

SFR Address:

SFR Page:

0xC6

0

Given:

AMX0SL = 0x00, AMX0CF = 0x00, ADLJST = 0,

ADC0LTH:ADC0LTL = 0x0200,

ADC0GTH:ADC0GTL = 0x0100.

An ADC End of Conversion will cause an ADC

Window Compare Interrupt (ADWINT=1) if the

resulting ADC Data Word is < 0x0200 and

> 0x0100.

Given:

AMX0SL = 0x00, AMX0CF = 0x00, ADLJST = 0,

ADC0LTH:ADC0LTL = 0x0100,

ADC0GTH:ADC0GTL = 0x0200.

An ADC End of Conversion will cause an ADC

Window Compare Interrupt (ADWINT=1) if the

resulting ADC Data Word is > 0x0200 or

< 0x0100.

0x03FF

0x0201

0x0200

0x01FF

0x0101

0x0100

0x00FF

0x0000

AD0WINT=1

AD0WINT

not affected

AD0WINT

not affected

ADC Data

Word

0x03FF

0x0201

0x0200

0x01FF

0x0101

0x0100

0x00FF

0x0000

AD0WINT=1

AD0WINT

not affected

AD0WINT=1

ADC0LTH:ADC0LTL

ADC0GTH:ADC0GTL

ADC Data

Word

ADC0GTH:ADC0GTL

ADC0LTH:ADC0LTL

0

Input Voltage

(AD0 - AGND)

REF x (1023/1024)

REF x (256/1024)

REF x (512/1024)

0

Input Voltage

(AD0 - AGND)

REF x (1023/1024)

REF x (256/1024)

REF x (512/1024)

C8051F040/1/2/3/4/5/6/7

86 Rev. 1.5

Figure 6.9. 10-Bit ADC0 Window Interrupt Example:

Right Justified Differential Data

Given:

AMX0SL = 0x00, AMX0CF = 0x01, ADLJST = 0,

ADC0LTH:ADC0LTL = 0x0100,

ADC0GTH:ADC0GTL = 0xFFFF.

An ADC End of Conversion will cause an ADC

Window Compare Interrupt (ADWINT=1) if the

resulting ADC Data Word is < 0x0100 and

> 0xFFFF. (In two’s-complement math,

0xFFFF = -1.)

Given:

AMX0SL = 0x00, AMX0CF = 0x01, ADLJST = 0,

ADC0LTH:ADC0LTL = 0xFFFF,

ADC0GTH:ADC0GTL = 0x0100.

An ADC End of Conversion will cause an ADC

Window Compare Interrupt (ADWINT=1) if the

resulting ADC Data Word is < 0xFFFF or

> 0x0100. (In two’s-complement math,

0xFFFF = -1.)

0x01FF

0x0101

0x0100

0x00FF

0x0000

0xFFFF

0xFFFE

0xFE00

AD0WINT=1

AD0WINT

not affected

AD0WINT

not affected

0x01FF

0x0101

0x0100

0x00FF

0x0000

0xFFFF

0xFFFE

0xFE00

AD0WINT=1

AD0WINT

not affected

-REF

Input Voltage

(AD0 - AD1)

AD0WINT=1

REF x (511/512)

ADC0LTH:ADC0LTL

ADC0GTH:ADC0GTL

ADC Data

Word

ADC Data

Word

ADC0LTH:ADC0LTL

ADC0GTH:ADC0GTL

REF x (256/512)

REF x (-1/512)

-REF

Input Voltage

(AD0 - AD1)

REF x (511/512)

REF x (256/512)

REF x (-1/512)

C8051F040/1/2/3/4/5/6/7

Rev. 1.5 87

Figure 6.10. 10-Bit ADC0 Window Interrupt Example:

Left Justified Single-Ended Data

Given:

AMX0SL = 0x00, AMX0CF = 0x00, ADLJST = 1,

ADC0LTH:ADC0LTL = 0x8000,

ADC0GTH:ADC0GTL = 0x4000.

An ADC End of Conversion will cause an ADC

Window Compare Interrupt (ADWINT=1) if the

resulting ADC Data Word is < 0x8000 and

> 0x4000.

Given:

AMX0SL = 0x00, AMX0CF = 0x00, ADLJST = 1,

ADC0LTH:ADC0LTL = 0x4000,

ADC0GTH:ADC0GTL = 0x8000.

An ADC End of Conversion will cause an ADC

Window Compare Interrupt (ADWINT=1) if the

resulting ADC Data Word is < 0x4000 or

> 0x8000.

0xFFC0

0x8040

0x8000

0x7FC0

0x4040

0x4000

0x3FC0

0x0000

AD0WINT=1

AD0WINT

not affected

AD0WINT

not affected

ADC Data

Word

0xFFC0

0x8040

0x8000

0x7FC0

0x4040

0x4000

0x3FC0

0x0000

AD0WINT=1

AD0WINT

not affected

AD0WINT=1

ADC0LTH:ADC0LTL

ADC0GTH:ADC0GTL

ADC Data

Word

ADC0GTH:ADC0GTL

ADC0LTH:ADC0LTL

0

Input Voltage

(AD0 - AGND)

REF x (1023/1024)

REF x (256/1024)

REF x (512/1024)

0

Input Voltage

(AD0 - AGND)

REF x (1023/1024)

REF x (256/1024)

REF x (512/1024)

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