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NRF51822-CFAC-R Fiches technique(PDF) 45 Page - Nordic Semiconductor

No de pièce NRF51822-CFAC-R
Description  Multiprotocol Bluetooth® low energy/2.4 GHz RF System on Chip
PDF  130 Pages
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Fabricant  NORDIC [Nordic Semiconductor]
Site Internet  https://www.nordicsemi.com/
Logo NORDIC - Nordic Semiconductor

NRF51822-CFAC-R Fiches technique(HTML) 45 Page - Nordic Semiconductor

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Page 45
nRF51822 Product Specification v3.3
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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