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NRF52820-QDAA-R7 Datasheet(PDF) 80 Page - Nordic Semiconductor

Part # NRF52820-QDAA-R7
Description  nRF52820
PDF  437 Pages
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Manufacturer  NORDIC [Nordic Semiconductor]
Direct Link  https://www.nordicsemi.com/
Logo NORDIC - Nordic Semiconductor

NRF52820-QDAA-R7 Datasheet(HTML) 80 Page - Nordic Semiconductor

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Power and clock management
Bit number
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID
B
A
Reset 0x00000000
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ID
Access
Field
Value ID
Value
Description
A
R
SRC
Source of HFCLK
RC
0
64 MHz internal oscillator (HFINT)
Xtal
1
64 MHz crystal oscillator (HFXO)
B
R
STATE
HFCLK state
NotRunning
0
HFCLK not running
Running
1
HFCLK running
5.4.3.18 LFCLKRUN
Address offset: 0x414
Status indicating that LFCLKSTART task has been triggered
Bit number
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID
A
Reset 0x00000000
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ID
Access
Field
Value ID
Value
Description
A
R
STATUS
LFCLKSTART task triggered or not
NotTriggered
0
Task not triggered
Triggered
1
Task triggered
5.4.3.19 LFCLKSTAT
Address offset: 0x418
LFCLK status
Bit number
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID
B
A A
Reset 0x00000000
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ID
Access
Field
Value ID
Value
Description
A
R
SRC
Source of LFCLK
RC
0
32.768 kHz RC oscillator (LFRC)
Xtal
1
32.768 kHz crystal oscillator (LFXO)
Synth
2
32.768 kHz synthesized from HFCLK (LFSYNT)
B
R
STATE
LFCLK state
NotRunning
0
LFCLK not running
Running
1
LFCLK running
5.4.3.20 LFCLKSRCCOPY
Address offset: 0x41C
Copy of LFCLKSRC register, set when LFCLKSTART task was triggered
4463_156 v1.0
80



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