PAC1721 datasheet(37/92 Pages) MICROCHIP

Part #	PAC1721

Description	Single-Channel Power Monitor with Accumulator, 9V Full Scale Range

PDF	92 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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37 / 92 page

 2026 Microchip Technology Inc. and its subsidiaries

DS-20007088A-page 37

PAC1721

6.1

Reading Data Bytes

Data represented by the data registers becomes read-

able 1 µs after a conversion cycle completes and a

Refresh (any) command is issued.

When new data is written to a configuration register

and the host reads it back, the new data is read back

even if no Refresh (any) command was issued to

trigger the new data to take effect.

Check the following registers to ensure that the active

and latched configurations are known:

• CONTROL_ACT

• NEG_PWR_FSR_ACT

• CONTROL_LAT

• NEG_PWR_FSR_LAT

6.2

The PAC1721 registers can be categorized as follows:

• Data Registers:

◦ ACC_COUNT

◦ VACC

◦ VBUS

◦ VSENSE

◦ VBUS_AVG

◦ VSENSE_AVG

◦ VPOWER

◦ VBUS_MIN

◦ VBUS_MAX

◦ VSENSE_MIN

◦ VSENSE_MAX

◦ VPOWER_MIN

◦ VPOWER_MAX

• Configuration Registers:

◦ CONTROL

◦ NEG_PWR_FSR

◦ SLOW

◦ SLOW_ALERT0

◦ GPIO_ALERT1

◦ ACC_FULL_LIMIT

◦ ALERT_ENABLE

◦ ACC_COUNT_PRESET

◦ VACC_PRESET

PAC1721 Datasheet(PDF) 37 Page - Microchip Technology

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