Product Specs
Table Of Contents
- 1Revision history
- 2About this document
- 3Block diagram
- 4Pin assignments
- 5Absolute maximum ratings
- 6Recommended operating conditions
- 7CPU
- 8Memory
- 9AHB multilayer
- 10EasyDMA
- 11NVMC — Non-volatile memory controller
- 12BPROT — Block protection
- 13FICR — Factory information configuration registers
- 14UICR — User information configuration registers
- 14.1Registers
- Table 18: Instances
- 14.1.2NRFFW[1]
- 14.1.3NRFFW[2]
- 14.1.4NRFFW[3]
- 14.1.5NRFFW[4]
- 14.1.6NRFFW[5]
- 14.1.7NRFFW[6]
- 14.1.8NRFFW[7]
- 14.1.9NRFFW[8]
- 14.1.10NRFFW[9]
- 14.1.11NRFFW[10]
- 14.1.12NRFFW[11]
- 14.1.13NRFFW[12]
- 14.1.14NRFFW[13]
- 14.1.15NRFFW[14]
- 14.1.16NRFHW[0]
- 14.1.17NRFHW[1]
- 14.1.18NRFHW[2]
- 14.1.19NRFHW[3]
- 14.1.20NRFHW[4]
- 14.1.21NRFHW[5]
- 14.1.22NRFHW[6]
- 14.1.23NRFHW[7]
- 14.1.24NRFHW[8]
- 14.1.25NRFHW[9]
- 14.1.26NRFHW[10]
- 14.1.27NRFHW[11]
- 14.1.60PSELRESET[0]
- 14.1.61PSELRESET[1]
- 14.1.63NFCPINS
- 14.1Registers
- 15Peripheral interface
- 16Debug and trace
- 17Power and clock management
- 18POWER — Power supply
- 18.1Regulators
- 18.2System OFF mode
- 18.3System ON mode
- 18.4Power supply supervisor
- 18.5RAM sections
- 18.6Reset
- 18.7Retained registers
- 18.8Reset behavior
- 18.9Registers
- Table 23: Instances
- 18.9.6POFCON
- 18.9.7GPREGRET
- 18.9.8GPREGRET2
- 18.9.9RAMON ( Deprecated )
- 18.9.10RAMONB ( Deprecated )
- 18.9.12RAM[0].POWER
- 18.9.13RAM[0].POWERSET
- 18.9.14RAM[0].POWERCLR
- 18.9.15RAM[1].POWER
- 18.9.16RAM[1].POWERSET
- 18.9.17RAM[1].POWERCLR
- 18.9.18RAM[2].POWER
- 18.9.19RAM[2].POWERSET
- 18.9.20RAM[2].POWERCLR
- 18.9.21RAM[3].POWER
- 18.9.22RAM[3].POWERSET
- 18.9.23RAM[3].POWERCLR
- 18.9.24RAM[4].POWER
- 18.9.25RAM[4].POWERSET
- 18.9.26RAM[4].POWERCLR
- 18.9.27RAM[5].POWER
- 18.9.28RAM[5].POWERSET
- 18.9.29RAM[5].POWERCLR
- 18.9.30RAM[6].POWER
- 18.9.31RAM[6].POWERSET
- 18.9.32RAM[6].POWERCLR
- 18.9.33RAM[7].POWER
- 18.9.34RAM[7].POWERSET
- 18.9.35RAM[7].POWERCLR
- 18.10Electrical specification
- 19CLOCK — Clock control
- 20GPIO — General purpose input/output
- 21GPIOTE — GPIO tasks and events
- 22PPI — Programmable peripheral interconnect
- 23RADIO — 2.4 GHz Radio
- Figure 29: RADIO block diagram
- 23.1EasyDMA
- 23.2Packet configuration
- 23.3Maximum packet length
- 23.4Address configuration
- 23.5Data whitening
- 23.6CRC
- 23.7Radio states
- 23.8Transmit sequence
- 23.9Receive sequence
- 23.10Received Signal Strength Indicator (RSSI)
- 23.11Interframe spacing
- 23.12Device address match
- 23.13Bit counter
- 23.14Registers
- 23.15Electrical specification
- 24TIMER — Timer/counter
- 25RTC — Real-time counter
- 26RNG — Random number generator
- 27TEMP — Temperature sensor
- 28ECB — AES electronic codebook mode encryption
- 29CCM — AES CCM mode encryption
- Figure 59: Key-stream generation followed by encry
- 29.1Shared resources
- 29.2Encryption
- 29.3Decryption
- 29.4AES CCM and RADIO concurrent operation
- 29.5Encrypting packets on-the-fly in radio transmit mo
- 29.6Decrypting packets on-the-fly in radio receive mod
- 29.7CCM data structure
- 29.8EasyDMA and ERROR event
- 29.9Registers
- 30AAR — Accelerated address resolver
- 31SPIM — Serial peripheral interface master with Eas
- 32SPIS — Serial peripheral interface slave with Easy
- Figure 73: SPI slave
- 32.1Shared resources
- 32.2EasyDMA
- 32.3SPI slave operation
- 32.4Pin configuration
- 32.5Registers
- Table 71: Instances
- 32.5.8PSELMISO ( Deprecated )
- 32.5.9PSELMOSI ( Deprecated )
- 32.5.10PSELCSN ( Deprecated )
- 32.5.13PSEL.MOSI
- 32.5.15RXDPTR ( Deprecated )
- 32.5.16MAXRX ( Deprecated )
- 32.5.17AMOUNTRX ( Deprecated )
- 32.5.19RXD.MAXCNT
- 32.5.20RXD.AMOUNT
- 32.5.21TXDPTR ( Deprecated )
- 32.5.22MAXTX ( Deprecated )
- 32.5.23AMOUNTTX ( Deprecated )
- 32.5.25TXD.MAXCNT
- 32.5.26TXD.AMOUNT
- 32.5.28DEF
- 32.6Electrical specification
- 33TWIM — I2C compatible two-wire interface master wi
- 34TWIS — I2C compatible two-wire interface slave wit
- Figure 86: TWI slave with EasyDMA
- Figure 87: A typical TWI setup comprising one mast
- Figure 88: TWI slave state machine
- 34.1Shared resources
- 34.2EasyDMA
- 34.3TWI slave responding to a read command
- 34.4TWI slave responding to a write command
- 34.5Master repeated start sequence
- 34.6Terminating an ongoing TWI transaction
- 34.7Low power
- 34.8Slave mode pin configuration
- 34.9Registers
- 34.10Electrical specification
- 35UARTE — Universal asynchronous receiver/ transmitt
- 36QDEC — Quadrature decoder
- 37SAADC — Successive approximation analog-to- digita
- 37.1Shared resources
- 37.2Overview
- 37.3Digital output
- 37.4Analog inputs and channels
- 37.5Operation modes
- 37.6EasyDMA
- 37.7Resistor ladder
- 37.8Reference
- 37.9Acquisition time
- 37.10Limits event monitoring
- 37.11Registers
- Table 89: Instances
- 37.11.7CH[0].PSELN
- 37.11.8CH[0].CONFIG
- 37.11.9CH[0].LIMIT
- 37.11.11CH[1].PSELN
- 37.11.12CH[1].CONFIG
- 37.11.13CH[1].LIMIT
- 37.11.15CH[2].PSELN
- 37.11.16CH[2].CONFIG
- 37.11.17CH[2].LIMIT
- 37.11.19CH[3].PSELN
- 37.11.20CH[3].CONFIG
- 37.11.21CH[3].LIMIT
- 37.11.23CH[4].PSELN
- 37.11.24CH[4].CONFIG
- 37.11.25CH[4].LIMIT
- 37.11.27CH[5].PSELN
- 37.11.28CH[5].CONFIG
- 37.11.29CH[5].LIMIT
- 37.11.31CH[6].PSELN
- 37.11.32CH[6].CONFIG
- 37.11.33CH[6].LIMIT
- 37.11.35CH[7].PSELN
- 37.11.36CH[7].CONFIG
- 37.11.37CH[7].LIMIT
- 37.11.39OVERSAMPLE
- 37.11.40SAMPLERATE
- 37.11.41RESULT.PTR
- 37.11.42RESULT.MAXCNT
- 37.11.43RESULT.AMOUNT
- 37.12Electrical specification
- 37.13Performance factors
- 38COMP — Comparator
- 39LPCOMP — Low power comparator
- 40WDT — Watchdog timer
- 41SWI — Software interrupts
- 42NFCT — Near field communication tag
- 42.1Overview
- 42.2Pin configuration
- 42.3EasyDMA
- 42.4Collision resolution
- 42.5Frame timing controller
- 42.6Frame assembler
- 42.7Frame disassembler
- 42.8Antenna interface
- 42.9NFCT antenna recommendations
- 42.10Battery protection
- 42.11References
- 42.12Registers
- Table 99: Instances
- 42.12.6FRAMESTATUS.RX
- 42.12.7CURRENTLOADCTRL
- 42.12.8FIELDPRESENT
- 42.12.9FRAMEDELAYMIN
- 42.12.10FRAMEDELAYMAX
- 42.12.11FRAMEDELAYMODE
- 42.12.12PACKETPTR
- 42.12.13MAXLEN
- 42.12.14TXD.FRAMECONFIG
- 42.12.15TXD.AMOUNT
- 42.12.16RXD.FRAMECONFIG
- 42.12.17RXD.AMOUNT
- 42.12.18NFCID1_LAST
- 42.12.19NFCID1_2ND_LAST
- 42.12.20NFCID1_3RD_LAST
- 42.12.21SENSRES
- 42.12.22SELRES
- 42.13Electrical specification
- 43PDM — Pulse density modulation interface
- 44I2S — Inter-IC sound interface
- 44.1Mode
- 44.2Transmitting and receiving
- 44.3Left right clock (LRCK)
- 44.4Serial clock (SCK)
- 44.5Master clock (MCK)
- 44.6Width, alignment and format
- 44.7EasyDMA
- 44.8Module operation
- 44.9Pin configuration
- 44.10Registers
- Table 108: Instances
- 44.10.7CONFIG.TXEN
- 44.10.8CONFIG.MCKEN
- 44.10.9CONFIG.MCKFREQ
- 44.10.10CONFIG.RATIO
- 44.10.11CONFIG.SWIDTH
- 44.10.12CONFIG.ALIGN
- 44.10.13CONFIG.FORMAT
- 44.10.14CONFIG.CHANNELS
- 44.10.15RXD.PTR
- 44.10.16TXD.PTR
- 44.10.17RXTXD.MAXCNT
- 44.10.18PSEL.MCK
- 44.10.20PSEL.LRCK
- 44.10.21PSEL.SDIN
- 44.10.22PSEL.SDOUT
- 44.11Electrical specification
- 45MWU — Memory watch unit
- Table 110: Memory regions
- 45.1Registers
- Table 111: Instances
- 45.1.4NMIEN
- 45.1.5NMIENSET
- 45.1.6NMIENCLR
- 45.1.7PERREGION[0].SUBSTATWA
- 45.1.8PERREGION[0].SUBSTATRA
- 45.1.9PERREGION[1].SUBSTATWA
- 45.1.10PERREGION[1].SUBSTATRA
- 45.1.12REGIONENSET
- 45.1.14REGION[0].START
- 45.1.15REGION[0].END
- 45.1.16REGION[1].START
- 45.1.17REGION[1].END
- 45.1.18REGION[2].START
- 45.1.19REGION[2].END
- 45.1.20REGION[3].START
- 45.1.21REGION[3].END
- 45.1.22PREGION[0].START
- 45.1.23PREGION[0].END
- 45.1.25PREGION[1].START
- 45.1.26PREGION[1].END
- 46EGU — Event generator unit
- 47PWM — Pulse width modulation
- 48SPI — Serial peripheral interface master
- 49TWI — I2C compatible two-wire interface
- 50UART — Universal asynchronous receiver/ transmitte
- 51Mechanical specifications
- 52Ordering information
- 53Reference circuitry
- 53.1Schematic QFAA and QFAB QFN48 with internal LDO se
- 53.2Schematic QFAA and QFAB QFN48 with DC/DC regulato
- 53.3Schematic QFAA and QFAB QFN48 with DC/DC regulato
- 53.4Schematic CIAA WLCSP with internal LDO setup
- 53.5Schematic CIAA WLCSP with DC/DC regulator setup
- 53.6Schematic CIAA WLCSP with DC/DC regulator and
- 53.7PCB guidelines
- 53.8PCB layout example
- 54Liability disclaimer
- Mouser Electronics
48 SPI — Serial peripheral interface master
Page
514
E0
E1
E2
E3
READY
MOSI
MISO
TXD
TXD+1
RXD-1
RXD
Mode Clock polarity
CPOL
Clock phase
CPHA
SPI_MOD 0 (Leading)
SPI_MOD 0 (Leading)
SPI_MOD 1 (Trailing)
SPI_MOD 1 (Trailing)
0 (Active High)
1 (Active Low)
0 (Active High)
1 (Active Low)
48 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.
PSEL.MISO PSEL.SCK PSEL.MOSI
Figure 150: SPI master
RXD-1 and TXD+1 illustrate the double buffered version of RXD and TXD respectively.
48.1 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.
Table 120: SPI modes
48.1.1 SPI master mode pin configuration
The different signals SCK, MOSI, and MISO associated with the SPI master are mapped to physical pins.
This mapping is according to the configuration specified in the PSELSCK, PSELMOSI, and PSELMISO
registers respectively. If a value of 0xFFFFFFFF is specified in any of these registers, the associated SPI
master signal is not connected to any physical pin. The PSELSCK, PSELMOSI, and PSELMISO registers
and their configurations are only used as long as the SPI master is enabled, and retained only as long as
the device is in ON mode. PSELSCK, PSELMOSI, and PSELMISO must only be configured when the SPI
master is disabled.
To secure correct behavior in the SPI, the pins used by the SPI must be configured in the GPIO peripheral
as described in Table 121: GPIO configuration on page 515 prior to enabling the SPI. The SCK must