MCP47CMB02 datasheet(55/124 Pages) MICROCHIP

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 2018-2019 Microchip Technology Inc.

DS20006089B-page 55

MCP47CXBXX

Control register. Each DAC has two bits to control the

power-down state of the DAC. This register is for the

volatile memory locations and the nonvolatile memory

locations. The width of this register is two times the

number of DACs for the device.

POWER-DOWN CONTROL REGISTERS (09h/19h)

(VOLATILE/NONVOLATILE)

U-0

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

Single

—

———

——

—(1)

—(1) PD0B PD0A

Dual

—

PD1B PD1A PD0B PD0A

bit 15

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

= Single channel device

= Dual channel device

Single

Dual

bit 15-2

bit 15-4

Unimplemented: Read as ‘0’

bit 1-0

bit 3-0

PDxB:PDxA: DAC Power-Down Control bits(2)

11 = Powered down – VOUT is open circuit

10 = Powered down – VOUT is loaded with a 100 k resistor to ground

01 = Powered down – VOUT is loaded with a 1 k resistor to ground

00 = Normal operation (not powered down)

Note 1: Unimplemented bit, read as ‘0’.

2: See Table 5-5 for more details.

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