NRF52811-QCAA-R7 datasheet(290/444 Pages) NORDIC

tên linh kiện	NRF52811-QCAA-R7

Giải thích chi tiết về linh kiện	nRF52811

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Peripherals

Symbol

Description

Min.

Typ.

Max.

Units

tSPI,RSCK,HD

SCK rise time, high drivea

tHRF,25pF

tSPI,FSCK,LD

SCK fall time, standard drivea

tRF,25pF

tSPI,FSCK,HD

SCK fall time, high drivea

tHRF,25pF

tSPI,WHSCK

SCK high timea

(tCSCK/2)

– tRSCK

tSPI,WLSCK

SCK low timea

(tCSCK/2)

– tFSCK

tSPI,SUMI

MISO to CLK edge setup time

tSPI,HMI

CLK edge to MISO hold time

tSPI,VMO

CLK edge to MOSI valid

tSPI,HMO

MOSI hold time after CLK edge

tHMO

MSb

LSb

MSb

LSb

MOSI (out)

MISO (in)

CPOL=0

CPHA=0

tSUMI

tHMI

tRSCK

tFSCK

tCSCK

tWHSCK

tWLSCK

tVMO

CPOL=1

CPHA=0

CPOL=0

CPHA=1

CPOL=1

CPHA=1

Figure 114: SPI master timing diagram

6.19 SPIM — Serial peripheral interface master with

EasyDMA

The SPI master can communicate with multiple slaves using individual chip select signals for each of the

slave devices attached to a bus.

Listed here are the main features for the SPIM

• SPI mode 0-3

• EasyDMA direct transfer to/from RAM for both SPI Slave and SPI Master

• Individual selection of IO pin for each SPI signal

4454_140 v1.0

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