MCP4017 datasheet(32/66 Pages) MICROCHIP

32 / 66 page

MCP4017/18/19

DS22147A-page 32

TABLE 4-1:

DEVICE FUNCTIONALITY AT EACH VDD REGION (NOTE 1)

FIGURE 4-1:

Power-up and Brown-out.

VDD Level

Serial

Interface

Potentiometer

Terminals

Wiper Setting

Comment

VDD < VBOR < 1.8V Ignored

“unknown”

Unknown

VBOR ≤ VDD < 1.8V “Unknown” Operational with

reduced electrical

specs

Wiper Register loaded

with POR/BOR value

1.8V

≤ VDD < 2.7V Accepted Operational with

reduced electrical

specs

Wiper Register

determines Wiper

Setting

Electrical performance may not

meet the data sheet specifications.

2.7V

≤ VDD ≤ 5.5V Accepted Operational

Wiper Register

determines Wiper

Setting

Meets the data sheet specifications

Note 1: For system voltages below the minimum operating voltage, the customer will be recommended to use a

voltage supervisor to hold the system in reset. This will ensure that MCP4017/18/19 commands are not

attempted out of the operating range of the device.

VPOR/BOR

VSS

VDD

2.7V

Outside Specified

Normal Operation Range

Device’s Serial

Wiper Forced to Default POR/BOR setting

VBOR Delay

Normal Operation Range

1.8V

Interface is

“Not Operational”

AC/DC Range

Analog

Characteristics

not specified

Analog

Characteristics not specified

VRAM

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