PAC1921 datasheet(22/56 Pages) MICROCHIP

tên linh kiện	PAC1921

Giải thích chi tiết về linh kiện	High-Side Current/Power Sensor

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PAC1921 High-Side Current/Power Sensor Evaluation Board User’s Guide

DS50002376A-page 22

 2015 Microchip Technology Inc.

3.3

OPERATING MODE

3.3.1

SMBus Mode

By default, the evaluation board is configured so that the PAC1921 operates in SMBus

mode with an SMBus address of, 1001_100xb (98h). The address can be changed to

1001_101xb (9Ah) by moving jumper J8 to position 2-3. Cycle power to the evaluation

board in order for the change to take effect.

3.4

LED INDICATORS

LED locations are indicated in Figure 3-1.

FIGURE 3-1:

LED Indicator Locations.

LEDs indicate the status of the signals, as described in Table 3-1:

TABLE 3-1:

LED STATUS INDICATORS

LED

Signal

OFF

Green

Red

LD1

VDD Power

VDD is not present

N/A

VDD is present

LD2

+5V USB Power

USB power is not present

N/A

+5V USB power is

present

LD6

READ/INT

Pin is not asserted

(Read State)

Pin is asserted

(Integrate State)

N/A

LED 1

VDD Power

LED 2

USB Power

LED 6

READ/INT

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