MCP19116 datasheet(68/246 Pages) MICROCHIP

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MCP19116/7

DS20005479B-page 68

 2015-2016 Microchip Technology Inc.

9.12

Calibration Word 12

The ADCCAL<13:0> bits at memory location 208Bh

contain the calibration bits for the A/D Converter.

Calibration Word 12 (ADCCAL<13:0>) contains the

factory measurement of the full-scale ADC Reference.

The value represents the number of A/D converter

counts per volt. ADCC<4:0> bits represent the fraction

of an A/D converter count, which can provide additional

precision when oversampling the ADC for enhanced

resolution. This calibration word can be used to

calibrate signals read by the Analog-to-Digital

Converter.

CALWD12: CALIBRATION WORD 12 REGISTER

R/P-1

ADCC13

ADCC12

ADCC11

ADCC10

ADCC9

ADCC8

bit 13

bit 8

R/P-1

ADCC7

ADCC6

ADCC5

ADCC4

ADCC3

ADCC2

ADCC1

ADCC0

bit 7

bit 0

Legend:

R = Readable bit

P = Programmable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 13-5

ADCC<13:5>: Whole number of A/D converter count

111111111 = 511

•

000000000 = 0

bit 4-0

ADCC<4:0>: Fraction number of A/D converter count

11111 = 0.96875

•

00001 = 0.03125

00000 = 0.00000

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