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NRF51422-QFAC-R7 Datasheet(PDF) 44 Page - Nordic Semiconductor

Part # NRF51422-QFAC-R7
Description  Multiprotocol ANT™/Bluetooth® low energy System on Chip
PDF  115 Pages
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Manufacturer  NORDIC [Nordic Semiconductor]
Direct Link  https://www.nordicsemi.com/
Logo NORDIC - Nordic Semiconductor

NRF51422-QFAC-R7 Datasheet(HTML) 44 Page - Nordic Semiconductor

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Page 44
nRF51422 Product Specification v3.1
8.2
Power management
Table 28 Power Fail Comparator
Table 29 Pin Reset
Symbol
Description
Note
Min.
Typ.
Max.
Units
Test
level
VPOF
Nominal power level warning
thresholds (falling supply voltage).
Accuracy as defined by VTOL
2.1
2.3
2.5
2.7
V2
VTOL
Threshold voltage tolerance.
±5
%
3
VHYST
Threshold voltage hysteresis.
VPOF = 2.1 V
VPOF = 2.3 V
VPOF = 2.5 V
VPOF = 2.7 V
46
62
79
100
mV
3
Symbol
Description
Min.
Typ.
Max.
Units
Test
level
tHOLDRESETNORMAL
Hold time for reset pin when doing a pin reset.1
1. SWDCLK pin must be kept low during reset.
0.2
μs
1
tHOLDRESETDEBUG
Hold time for reset pin when doing a pin reset
during debug.1,2
2. Bit 0 in the RESET register in the power management module must be set to 1 to enable reset during debug.
100
μs
1



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