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NRF52820-QDAA-R Datasheet(PDF) 243 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) 243 Page - Nordic Semiconductor

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Peripherals
6.14.10.15 CC[n] (n=0..3)
Address offset: 0x540 + (n × 0x4)
Compare register n
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 A A A A A A A A A A A A A A A A A A A A A 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
RW COMPARE
Compare value
6.14.11 Electrical specification
6.15 SPI — Serial peripheral interface master
The SPI master provides a simple CPU interface which includes a TXD register for sending data and an RXD
register for receiving data. This section is added for legacy support for now.
RXD
READY
MISO
MOSI
PSEL.MISO
RXD-1
TXD
TXD+1
PSEL.SCK
PSEL.MOSI
Figure 95: SPI master
RXD-1 and TXD+1 illustrate the double buffered version of RXD and TXD respectively.
6.15.1 Functional description
The TXD and RXD registers are double-buffered to enable some degree of uninterrupted data flow in and
out of the SPI master.
The SPI master does not implement support for chip select directly. Therefore, the CPU must use available
GPIOs to select the correct slave and control this independently of the SPI master. The SPI master supports
SPI modes 0 through 3.
4463_156 v1.0
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