PAC2514x Users Guide Preview
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any form without Qorvo’s prior written consent
Rev. 1.3 12 December 2023 © 2023 Qorvo US, Inc.
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0d to 7d. Refer to Section 34.1.6 for more information on available wake up timing periods. A
configuration setting equal to 0d will in effect disable the Wake Up Timer. Settings from 1d to 7d
will enable the Wake Up Timer with periods ranging from as low as 125 ms to as large as 8
seconds.
The Wake Up Timer method is selected by configuring the SOC. HIBCTL.WAKESRC to 2d.
Power Manager Faults
The power manager monitors all of the power supplies and LDOs for faults during operation.
During a power management fault condition such as under-voltage or over-current each of the
power supplies will set a fault bit and certain power supplies can be disabled as a result of the
fault. The device may be reset and power rails restarted. To determine the fault condition, fault
registers can be read. The corresponding fault bit(s) should be written to a 1b to clear the fault
flag.
Temperature Warnings and Faults
The PAC2514X has an integrated temperature sensor that is used for temperature warnings
and faults and can also be sampled by the MCU ADC through the AFE MUX using the VPTAT
MUX channel.
This value has a compensation coefficient available in INFO FLASH that can be used to obtain
an accurate temperature. The parameter VT300K will be stored in INFO FLASH and will
indicate the compensation factor.
The die temperature in degrees Kelvin can then be calculated by the following formula:
TKELVIN = 300 * (VPTAT + 0.075) / ( 0.075)
The PAC2514X contains two warning thresholds and one fault threshold:
•
Warn 1: 120°C
•
Warn 2: 140°C
•
Fault: 155°C
If the internal temperature (VPTAT) rises above the Warn 1 threshold, the device will indicate
this through a latched register bit. The user may enable a mask-able interrupt to the MCU to
announce this condition.
If the internal temperature (VPTAT) rises above the Warn 2 threshold, the device will indicate
this through a separate latched register bit. The user may enable an interrupt to the MCU to
announce this condition. This will be the same interrupt as the Warn 1 threshold.
If the internal temperature (VPTAT) rises above the Fault threshold, the Charge pump, DC/DC
and gate drivers will be disabled. The device will indicate this through a latched register bit.
