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NRF52820-QDAA-R Datasheet(PDF) 141 Page - Nordic Semiconductor

Part # NRF52820-QDAA-R
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-R Datasheet(HTML) 141 Page - Nordic Semiconductor

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Peripherals
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
E
D D
B B B B 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
Toggle
3
Task mode: Toggle pin from OUT[n]. Event mode: Generate
IN[n] when any change on pin.
E
RW OUTINIT
When in task mode: Initial value of the output when the
GPIOTE channel is configured. When in event mode: No
effect.
Low
0
Task mode: Initial value of pin before task triggering is low
High
1
Task mode: Initial value of pin before task triggering is high
6.9.5 Electrical specification
6.10 PPI — Programmable peripheral interconnect
The programmable peripheral interconnect (PPI) enables peripherals to interact autonomously with each
other using tasks and events independent of the CPU. The PPI allows precise synchronization between
peripherals when real-time application constraints exist and eliminates the need for CPU activity to
implement behavior which can be predefined using PPI.
Peripheral 1
Peripheral 2
Peripheral 1
Peripheral 2
Event 1
Event 2
Event 1
Event 2
Event 3
Task 1
Task 2
Task 3
Task 1
CH[0].EEP
CH[1].EEP
CH[n].EEP
CH[0].TEP
CHEN
16MHz
FORK[0].TEP
0
1
n
CHG[0]
0
1
n
CHG[m]
0
1
n
...
Figure 44: PPI block diagram
The PPI system has, in addition to the fully programmable peripheral interconnections, a set of channels
where the event end point (EEP) and task end points (TEP) are fixed in hardware. These fixed channels can
be individually enabled, disabled, or added to PPI channel groups (see CHG[n] registers), in the same way
as ordinary PPI channels.
4463_156 v1.0
141



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