MCP3461RT-ESLASHST datasheet(94/118 Pages) MICROCHIP

94 / 118 page

MCP3461/2/4R

DS20006404C-page 94

 2020-2021 Microchip Technology Inc.

8.5

CONFIG3 REGISTER

Name

Bits

Address

Cof

CONFIG3

0x4

R/W

CONFIG3: CONFIGURATION REGISTER 3

R/W-0

CONV_MODE[1:0]

DATA_FORMAT[1:0]

CRC_FORMAT

EN_CRCCOM

EN_OFFCAL

EN_GAINCAL

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7-6

CONV_MODE[1:0]: Conversion Mode Selection

11 = Continuous Conversion mode or continuous conversion cycle in Scan mode

10 = One-shot conversion or one-shot cycle in Scan mode; it sets ADC_MODE[1:0] to ‘10’ (standby) at

the end of the conversion or at the end of the conversion cycle in Scan mode

0x = One-shot conversion or one-shot cycle in Scan mode’ it sets ADC_MODE[1:0] to ‘0x’ (ADC

shutdown) at the end of the conversion or at the end of the conversion cycle in Scan mode (default)

bit 5-4

DATA_FORMAT[1:0]: ADC Output Data Format Selection

11 = 32-bit (17-bit right justified data + Channel ID): CHID[3:0] + SGN extension (12 bits) + 16-bit ADC

data; it allows overrange with the SGN extension

10 = 32-bit (17-bit right justified data): SGN extension (8-bit) + 16-bit ADC data; it allows overrange with

the SGN extension

01 = 32-bit (16-bit left justified data): 16-bit ADC data + 0x0000 (16 bit); it does not allow overrange (ADC

code locked to 0xFFFF or 0x8000)

00 = 16-bit (default ADC coding): 16-bit ADC data; it does not allow overrange (ADC code locked to

0xFFFF or 0x8000)

bit 3

CRC_FORMAT: CRC Checksum Format Selection on Read Communications

(it does not affect CRCCFG coding)

1 = 32-bit wide (CRC-16 followed by 16 zeros)

0 = 16-bit wide (CRC-16 only) (default)

bit 2

EN_CRCCOM: CRC Checksum Selection on Read Communications

(it does not affect CRCCFG calculations)

1 = CRC on communications enabled

0 = CRC on communications disabled (default)

bit 1

EN_OFFCAL: Enable Digital Offset Calibration

1 = Enabled

0 = Disabled (default)

bit 0

EN_GAINCAL: Enable Digital Gain Calibration

1 = Enabled

0 = Disabled (default)

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