MCP47CMB02 datasheet(57/124 Pages) MICROCHIP

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 2018-2019 Microchip Technology Inc.

DS20006089B-page 57

MCP47CXBXX

Control and Slave Address register. Each DAC has

one bit to control the gain of the DAC. I2C devices also

have seven bits that are the I2C Slave address.

GAIN CONTROL AND SLAVE ADDRESS REGISTER (1Ah)

(NONVOLATILE)

U-0

U-0 U-0 U-0 U-0 U-0 R/W-n R/W-n U-0 R/W-n R/W-n R/W-n R/W-n R/W-n R/W-n R/W-n

Single

—

ADD6

ADD5

ADD4

ADD3 ADD2 ADD1

ADD0

Dual

—

ADD6

ADD5

ADD4

ADD3 ADD2 ADD1

ADD0

bit 15

bit 0

Legend:

R = Readable bit

W = Writable bit

C = Clearable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

= Single-channel device

= Dual-channel device

Single

Dual

bit 15-10

Unimplemented: Read as ‘0’

bit 9-8

Gx: DAC Output Driver Gain Control bits(1)

1 = 2x gain

0 = 1x gain

bit 7

Unimplemented: Read as ‘0’

bit 6-0

ADD6:ADD0: I2C 7-Bit Slave Address bits(2)

Note 1: When the DAC voltage reference is selected as VDD (VRxB:VRxA = 00), the DAC’s Gain bit is ignored and

the gain is forced to 1x (Gx = 0).

2: For I2C devices that have the A1 and A0 pins, the 7-bit Slave address is ADD6:ADD2 + A1:A0. For devices

without the A1 and A0 pins, the 7-bit Slave address is ADD6:ADD0.

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