PAC1921 datasheet(32/56 Pages) MICROCHIP

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

DS50002376A-page 32

 2015 Microchip Technology Inc.

4.2.3

Overflow Status Panel

The Overflow Status section, shown in Figure 4-9, represents the three bits in the

Overflow Status Register 1Ch. When an indicator turns red, it indicates an overflow.

FIGURE 4-9:

Overflow Status.

4.2.4

Rsense Panel

The Rsense section, shown in Figure 4-10, needs to reflect the value of the RSENSE

resistor in use on the evaluation board. This value is used in calculations done by the

GUI. In Demo mode, select the 1 Ohm - Demo button. In Sys mode, select the

0.005 Ohm - System button. If another resistor is used, check the Custom option

button and fill the corresponding value in the spin box underneath the option.

FIGURE 4-10:

Rsense Configuration Panel.

4.2.5

Panel and Integration Control Panel

The Panel and Integration Control section, shown in Figure 4-11, contains GUI controls

which set and clear the INT_EN bit. When using these controls, check the “READ/INT

OVR” box in the Main Configuration section to allow the INT_EN bit to override the

READ/INT pin state.

FIGURE 4-11:

Panel and Integration Control.

Note: Read Period (ms) is always enabled.

“READ/INT OVR” Box is Checked

PAC1921 数据表(PDF) 32 Page - Microchip Technology