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The nRF52 Series of System-on-Chip (SoC) devices embed a powerful yet low-power Arm® Cortex®-M4 processor with our industry leading 2.4 GHz RF transceivers. In combination with the very flexible orthogonal power management system, and a programmable peripheral interconnect (PPI) event system, the nRF52 Series enables you to make ultra-low power wireless solutions.
The nRF52 Series offers pin-compatible device options for Bluetooth® Low Energy, proprietary 2.4 GHz, and ANT™ solutions giving you the freedom to develop your wireless system using the technology that suits your application the best. Our unique memory and hardware resource protection system allows you to develop applications on devices with embedded protocol stacks running on the same processor without any need to link in the stack or strenuous testing to avoid application and stack from interfering with each other.
nRF52 Series IC comparison
| Features | nRF52805 | nRF52810 | nRF52811 | nRF52820 | nRF52832 | nRF52833 | nRF52840 | |
|---|---|---|---|---|---|---|---|---|
| CPU | Cortex-M4 | Cortex-M4 | Cortex-M4 | Cortex-M4 | Cortex-M4 with FPU | Cortex-M4 with FPU | Cortex-M4 with FPU | |
| 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | ||
| Memory | 192 kB flash | 192 kB flash | 192 kB flash | 256 kB flash | 512/256 kB flash | 512 kB flash | 1 MB flash | |
| - | - | - | - | Cache | Cache | Cache | ||
| 24 kB RAM | 24 kB RAM | 24 kB RAM | 32 kB RAM | 64/32 kB RAM | 128 kB RAM | 256 kB RAM | ||
| EasyDMA MAXCNT bit length | I2S | - | - | - | - | 14 | 14 | 14 |
| PDM | - | 15 | 15 | - | 15 | 15 | 15 | |
| PWM | - | 15 | 15 | - | 15 | 15 | 15 | |
| RADIO | 8 | 8 | 8 | 8 | 8 | 8 | 8 | |
| SAADC | - | 15 | 15 | - | 15 | 15 | 15 | |
| SPIM | 14 | 10 | 14 | 15 | 8 | 16 | 16 | |
| SPIS | 14 | 10 | 14 | 15 | 8 | 16 | 16 | |
| TWIM | 14 | 10 | 14 | 15 | 8 | 16 | 16 | |
| TWIS | 14 | 10 | 14 | 15 | 8 | 16 | 16 | |
| UARTE | 10 | 10 | 10 | 15 | 8 | 16 | 16 | |
| NFCT | - | - | - | - | 9 | 9 | 9 | |
| USBD | - | - | - | 7 | - | 7 | 7 | |
| QSPI | - | - | - | - | - | - | 20 | |
| Crypto | AES engine | AES engine | AES engine | AES engine | AES engine | AES engine | AES engine | |
| - | - | - | - | - | - | CryptoCell™310 | ||
| Radio | Protocols | Bluetooth Low Energy/ANT/2.4 GHz | Bluetooth Low Energy/ANT/2.4 GHz | Bluetooth Low Energy/ANT/2.4 GHz/IEEE 802.15.4 | Bluetooth Low Energy/Bluetooth mesh/Thread/ Zigbee/ANT/2.4 GHz/IEEE 802.15.4 | Bluetooth Low Energy/Bluetooth mesh/ANT/2.4 GHz | Bluetooth Low Energy/Bluetooth mesh/Thread/ Zigbee/ANT/2.4 GHz/IEEE 802.15.4 | Bluetooth Low Energy/Bluetooth mesh/Thread/ Zigbee/ANT/2.4 GHz/IEEE 802.15.4 |
| Bluetooth 5 PHYs | 2 Mbps | 2 Mbps | 2 Mbps/Long range | 2 Mbps/Long range | 2 Mbps | 2 Mbps/Long range | 2 Mbps/Long range | |
| Bluetooth 5.1 support | - | - | Yes | Yes | - | Yes | - | |
| Output power | +4 dBm | +4 dBm | +4 dBm | +8 dBm | +4 dBm | +8 dBm | +8 dBm | |
| Sensitivity | -97 dBm (Bluetooth 1 Mbps) | -96 dBm (Bluetooth 1 Mbps) | -97 dBm (Bluetooth 1 Mbps) | -95 dBm (Bluetooth Low Energy 1 Mbps) | -96 dBm (Bluetooth Low Energy 1 Mbps) | -95 dBm (Bluetooth Low Energy 1 Mbps) | -95 dBm (Bluetooth Low Energy 1 Mbps) | |
| Clock | 32 MHz crystal | 32 MHz crystal | 32 MHz crystal | 32 MHz crystal | 32 MHz crystal | 32 MHz crystal | 32 MHz crystal | |
| 64 MHz on chip (PLL) | 64 MHz on chip (PLL) | 64 MHz on chip (PLL) | 64 MHz on chip (PLL) | 64 MHz on chip (PLL) | 64 MHz on chip (PLL) | 64 MHz on chip (PLL) | ||
| 32.768 kHz crystal (optional) | 32.768 kHz crystal (optional) | 32.768 kHz crystal (optional) | 32.768 kHz crystal (optional) | 32.768 kHz crystal (optional) | 32.768 kHz crystal (optional) | 32.768 kHz crystal (optional) | ||
| 32.768 kHz on-chip RC | 32.768 kHz on-chip RC | 32.768 kHz on-chip RC | 32.768 kHz on-chip RC | 32.768 kHz on-chip RC | 32.768 kHz on-chip RC | 32.768 kHz on-chip RC | ||
| External 32.768 kHz clock | External 32.768 kHz clock | External 32.768 kHz clock | External 32.768 kHz clock | External 32.768 kHz clock | External 32.768 kHz clock | External 32.768 kHz clock | ||
| Power management | 1.7 V to 3.6 V supply voltage | 1.7 V to 3.6 V supply voltage | 1.7 V to 3.6 V supply voltage | 1.7 V to 5.5 V supply voltage
|
1.7 V to 3.6 V supply voltage | 1.7 V to 5.5 V supply voltage
|
1.7 V to 5.5 V supply voltage
|
|
| 1 stage LDO and DC/DC | 1 stage LDO and DC/DC | 1 stage LDO and DC/DC | 2 stage regulator LDO for high voltage and DC/DC or LDO for low voltage | 1 stage LDO and DC/DC | 2 stage regulator LDO for high voltage and DC/DC or LDO for low voltage | 2 stage LDO and DC/DC | ||
| - | - | - | On-chip VBUS 3.3 V reg | - | On-chip VBUS 3.3 V reg | On-chip VBUS 3.3 V reg | ||
| - | - | - | - | - | - | Regulated supply for external components | ||
| Digital interfaces | 1 × SPI master and slave | 1 × SPI master and slave | 2 × SPI master and slave | 2 × SPI master and slave | 3 × SPI master and slave | 4 × SPI master and 3 × SPI slave | 4 × SPI master and 3 × SPI slave | |
| 1 × TWI master and slave | 1 × TWI master and slave | 1 × TWI master and slave | 2 × TWI master and slave | 2 × TWI master and slave | 2 × TWI master and slave | 2 × TWI master and slave | ||
| 1 × UARTE | 1 × UARTE | 1 × UARTE | 1 × UARTE | 1 × UARTE or UART | 2 × UARTE | 2 × UARTE | ||
| - | 1 × PWM | 1 × PWM | - | 3 × PWM | 4 × PWM | 4 × PWM | ||
| - | QDEC | QDEC | QDEC | QDEC | QDEC | QDEC | ||
| - | PDM | PDM | - | PDM | PDM | PDM | ||
| - | - | - | - | I2S | I2S | I2S | ||
| - | - | - | 1 × USB Full-speed device | - | 1 × USB Full-speed device | 1 × USB Full-speed device | ||
| - | - | - | - | - | 1 × high-speed SPI master | 1 × high-speed SPI master | ||
| - | - | - | - | - | - | 1 × Quad SPI (w.XIP) | ||
| Analog interfaces | - | 64-level analog comp | 64-level analog comp | 64-level analog comp | 64-level analog comp | 64-level analog comp | 64-level analog comp | |
| - | - | - | - | 15-level low-power comp | 15-level low-power comp | 15-level low-power comp | ||
| 2-channel 12-bit ADC | 8-channel 12-bit ADC | 8-channel 12-bit ADC | - | 8-channel 12-bit ADC | 8-channel 12-bit ADC | 8-channel 12-bit ADC | ||
| - | - | - | - | NFC Tag | NFC Tag | NFC Tag | ||
| True Random Number Generator | True Random Number Generator | True Random Number Generator | True Random Number Generator | True Random Number Generator | True Random Number Generator | True Random Number Generator | ||
| Temperature sensor | Temperature sensor | Temperature sensor | Temperature sensor | Temperature sensor | Temperature sensor | Temperature sensor | ||
| Timers | 3 × 32-bit 16 MHz timers | 3 × 32-bit 16 MHz timers | 3 × 32-bit 16 MHz timers | 4 × 32-bit 16 MHz timers | 5 × 32-bit 16 MHz timers | 5 × 32-bit 16 MHz timers | 5 × 32-bit 16 MHz timers | |
| 2 × 32.768 kHz RTC | 2 × 32.768 kHz RTC | 2 × 32.768 kHz RTC | 2 × 32.768 kHz RTC | 3 × 32.768 kHz RTC | 3 × 32.768 kHz RTC | 3 × 32.768 kHz RTC | ||
| Watchdog timer (32.768 kHz) | Watchdog timer (32.768 kHz) | Watchdog timer (32.768 kHz) | Watchdog timer (32.768 kHz) | Watchdog timer (32.768 kHz) | Watchdog timer (32.768 kHz) | Watchdog timer (32.768 kHz) | ||
| Other interfaces | SWI debug interface | SWI debug interface | SWI debug interface | SWI debug interface | SWI debug interface | SWI debug interface | SWI debug interface | |
| PPI | 10 programmable channels | 20 programmable channels | 20 programmable channels | 20 programmable channels | 20 programmable channels | 20 programmable channels | 20 programmable channels | |
| 12 fixed channels | 12 fixed channels | 12 fixed channels | 12 fixed channels | 12 fixed channels | 12 fixed channels | 12 fixed channels | ||
| 6 channel groups | 6 channel groups | 6 channel groups | 6 channel groups | 6 channel groups | 6 channel groups | 6 channel groups | ||
| Other features | BPROT | BPROT | BPROT | BPROT | BPROT | ACL | ACL | |
| 6 × SWI | 6 × SWI | 6 × SWI | 6 × SWI | 6 × SWI | 6 × SWI | 6 × SWI | ||
| 2 × EGU | 2 × EGU | 2 × EGU | 6 × EGU | 6 × EGU | 6 × EGU | 6 × EGU | ||
| - | - | - | - | MWU | MWU | MWU | ||
| Power fail | Power fail comparator and brownout | Power fail comparator and brownout | Power fail comparator and brownout | Power fail comparator and brownout | Power fail comparator and brownout | Power fail comparator and brownout | Power fail comparator and brownout | |
| GPIO | Up to 10 pins | Up to 32 pins | Up to 32 pins | Up to 18 pins | Up to 32 pins | Up to 42 pins | Up to 48 pins | |
| 8 × GPIOTEs channels | 8 × GPIOTEs channels | 8 × GPIOTEs channels | 8 × GPIOTEs channels | 8 × GPIOTEs channels | 8 × GPIOTEs channels | 8 × GPIOTEs channels | ||
| Packages | - | 6 × 6 QFN48 w/32 GPIOs | 6 × 6 QFN48 w/32 GPIOs | - | 6 × 6 QFN48 w/32 GPIOs | 7 × 7 AQFN73 w/42 GPIOs | 7 × 7 AQFN73 w/48 GPIOs | |
| - | 5 × 5 QFN32 w/17 GPIOs | 5 × 5 QFN32 w/17 GPIOs | 5 × 5 QFN40 w/18 GPIOs and USB | - | 5 × 5 QFN40 w/18 GPIOs & USB | - | ||
| 2.5 × 2.5 WLCSP w/10 GPIOs | 2.5 × 2.5 WLCSP w/15 GPIOs | 2.5 × 2.5 WLCSP w/15 GPIOs | - | 3.0 × 3.2 WLCSP w/32 GPIOs & USB | 3.2 × 3.2 WLCSP w/42 GPIOs & USB | 3.5 × 3.5 WLCSP w/48 GPIOs | ||
| Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 105°C | -40 to 85°C | -40 to 105°C | -40 to 85°C | |
Memory-optimized Peripheral-only Bluetooth Low Energy protocol stack
The S113 SoftDevice is a Bluetooth® Low Energy peripheral protocol stack solution. It supports up to four peripheral connections with an additional broadcaster role running concurrently. The S113 SoftDevice integrates a Bluetooth Low Energy Controller and Host, and provides a full and flexible API for building Bluetooth Low Energy Nordic nRF52 System on Chip solutions.
SoftDevice S113 is a memory-optimized Bluetooth® Low Energy protocol stack for the Nordic nRF52805, nRF52810, nRF52811, nRF52820, nRF52832, nRF52833 and nRF52840 System-on-Chips (SoCs). It is Bluetooth 5.1 qualified and supports the following Bluetooth features: high-throughput 2 Mbps and channel selection algorithm 2 (CSA #2). The number of connections and bandwidth per connection are configurable, offering memory and performance optimization.
It is a complete stack with GAP, GATT, ATT, SM and Link Layer. Both GATT Server and Client are supported. The broad feature set also includes Privacy 1.2, LE Data Packet Length Extension, L2CAP connection-oriented channels, configurable ATT MTU and LE Secure Connections.
流控制用于在主机和主机控制器之间，避免传送到主机控制器的未应答远程设备的 ACL 数据溢出主机控制器数据缓冲区。主机（蓝牙协议栈）负责管理主机控制器（蓝牙芯片）的数据缓冲区。流控分为两种：
1）蓝牙协议栈到蓝牙芯片的流控
2）蓝牙芯片到蓝牙协议栈的流控
