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nRF51822

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nRF51822

Multiprotocol Bluetooth® 4.0 low energy/2.4 GHz RF SoC

Product Specification v1.3

Key Features

•2.4 GHz transceiver

• -93 dBm sensitivity in Bluetooth® low energy

mode

• 250 kbps, 1 Mbps, 2 Mbps supported data rates

• TX Power -20 to +4 dBm in 4 dB steps

• TX Power -30 dBm Whisper mode

• 13 mA peak RX, 10.5 mA peak TX (0 dBm)

• RSSI (1 dB resolution)

• ARM® Cortex™-M0 32 bit processor

• 275 μA/MHz running from flash memory

• 150 μA/MHz running from RAM

• Serial Wire Debug (SWD)

• S100 series SoftDevice ready

•Memory

• 256 kB or128 kB embedded flash program

memory

• 16 kB RAM

• Support for non-concurrent multiprotocol operation

• On-air compatibility with nRF24L series

• Flexible Power Management

• Supply voltage range 1.8 V to 3.6 V

• 2.5 μs wake-up using 16 MHz RCOSC

• 0.4 μA @ 3 V OFF mode

• 0.5 μA @ 3 V in OFF mode + 1 region RAM

retention

• 2.3 μA @ 3 V ON mode, all blocks IDLE

• 8/9/10 bit ADC - 8 configurable channels

• 31 General Purpose I/O Pins

• One 32 bit and two 16 bit timers with counter mode

•SPI Master

• Two-wire Master (I2C compatible)

•UART (CTS/RTS)

• CPU independent Programmable Peripheral Interconnect

(PPI)

• Quadrature Decoder (QDEC)

• AES HW encryption

• Real Timer Counter (RTC)

• Package variants

• QFN48 package, 6 x 6 mm

• WLCSP package, 3.50 x 3.83 mm

Applications

• Computer peripherals and I/O devices

•Mouse

•Keyboard

• Multi-touch trackpad

• Interactive entertainment devices

• Remote control

• 3D Glasses

• Gaming controller

• Personal Area Networks

• Health/fitness sensor and monitor

devices

•Medical devices

• Key-fobs + wrist watch

• Remote control toys

Page 3 of 67

nRF51822 Product Specification v1.3

Datasheet Status

Revision History

Status Description

Objective Product Specification (OPS)

This product specification contains target specifications for product

development.

Preliminary Product Specification (PPS)

This product specification contains preliminary data; supplementary

data may be published from Nordic Semiconductor ASA later.

Product Specification (PS)

This product specification contains final product specifications. Nordic

Semiconductor ASA reserves the right to make changes at any time

without notice in order to improve design and supply the best possible

product.

Date Version Description

May 2013 1.3 Updated schematics and BOMs in Section 11.3 on page 61.

April 2013 1.2 Added chip variant nRF51822-CEAA. Updated feature list on front page.

Updated

Section 3.2.1 on page 15, Section 3.2.2 on page 15, Chapter 6 on page 28,

Section 10.4 on page 52, and Section 10.5.1 on page 53.

Added

Section 2.2.2 on page 10, Section 7.1 on page 29, Section 9.2 on page 50,

and Section 11.3 on page 61.

Removed PCB layouts in Chapter 11 on page 54.

March 2013 1.1 Added chip variant nRF51822-QFAB. Added 32 MHz crystal oscillator

feature. Updated feature list on front page. Moved subsection

‘Calculating current when the DC/DC converter is enabled’ from chapter

8 to the nRF51 Reference Manual.

Updated

Chapter 1 on page 6, Section 2.2 on page 8, Section 3.2 on page 14,

Section 3.5 on page 18, Section 3.5.1 on page 19, Section 4.2 on page 23,

Chapter 5 on page 26, Section 8.1 on page 30, Section 8.1.2 on page 31,

Section 8.1.5 on page 33, Section 8.2 on page 35, Section 8.3 on page 37,

Section 8.5.3 on page 39, Section 8.8 on page 43, Section 8.9 on page 44,

Section 8.10 on page 45, Section 8.14 on page 46, Chapter 10 on page

51, Section 11.2.3 on page 59, Section 11.2.1 on page 55, and Section

11.2.2 on page 57.

Added

Section 3.5.4 on page 21, Section 8.1.3 on page 32, and Section 11.1 on

page 54.

November 2012 1.0 Changed from PPS to PS.

Updated feature list on front page.

Updated Table 13 on page 28, Table 14 on page 29, Table 16 on page 31,

Table 18 on page 33, Table 19 on page 33, Table 20 on page 34,

Table 23 on page 36, Table 24 on page 37, Table 26 on page 38,

Table 27 on page 38, Table 28 on page 39, Table 32 on page 42,

Table 33 on page 43, Table 35 on page 44, Table 38 on page 45,

Table 39 on page 46, Table 42 on page 47, Table 45 on page 48,

Table 46 on page 48, Table 61 on page 53,

and Figure 15 on page 59.

Page 4 of 67

nRF51822 Product Specification v1.3

Table of Contents

1 Introduction............................................................................................................................................... 6

2 Product overview...................................................................................................................................... 7

2.1 Block diagram .................................................................................................................................................. 7

2.2 Pin assignments and functions ................................................................................................................... 8

3 System blocks.......................................................................................................................................... 13

3.1 CPU ......................................................................................................................................................................13

3.2 Memory..............................................................................................................................................................14

3.3 Power management (POWER)...................................................................................................................16

3.4 Programmable Peripheral Interconnect (PPI) ......................................................................................17

3.5 Clock management (CLOCK)......................................................................................................................18

3.6 GPIO.....................................................................................................................................................................21

3.7 Debugger support .........................................................................................................................................21

4 Peripheral blocks .................................................................................................................................... 22

4.1 2.4 GHz radio (RADIO)...................................................................................................................................22

4.2 Timer/counters (TIMER)................................................................................................................................23

4.3 Real Time Counter (RTC) ..............................................................................................................................23

4.4 AES-ECB encryption (ECB) ...........................................................................................................................23

4.5 Random Number Generator (RNG)..........................................................................................................23

4.6 Watchdog Timer (WDT)................................................................................................................................23

4.7 Temperature sensor ......................................................................................................................................24

4.8 SPI (SPI)...............................................................................................................................................................24

4.9 Two-wire interface (TWI)..............................................................................................................................24

4.10 UART (UART).....................................................................................................................................................24

4.11 Quadrature Decoder (QDEC)......................................................................................................................25

4.12 Analog to Digital Converter (ADC)...........................................................................................................25

4.13 GPIO Task Event blocks (GPIOTE)..............................................................................................................25

5 Instance table .......................................................................................................................................... 26

6 Absolute maximum ratings .................................................................................................................. 28

7 Operating conditions............................................................................................................................. 29

7.1 nRF51822 WLCSP light sensitivity ............................................................................................................29

8 Electrical specifications ......................................................................................................................... 30

8.1 Clock sources ...................................................................................................................................................30

8.2 Power management......................................................................................................................................35

8.3 Block resource requirements .....................................................................................................................37

8.4 CPU ......................................................................................................................................................................37

8.5 Radio transceiver ............................................................................................................................................38

8.6 RSSI specifications..........................................................................................................................................42

8.7 UART specifications .......................................................................................................................................42

8.8 SPI specifications ............................................................................................................................................43

8.9 TWI specifications...........................................................................................................................................44

8.10 GPIOTE specifications ...................................................................................................................................45

8.11 Analog-to-Digital Converter (ADC) specifications..............................................................................45

8.12 Timer specifications.......................................................................................................................................46

8.13 RTC.......................................................................................................................................................................46

8.14 Temperature sensor ......................................................................................................................................46

Page 5 of 67

nRF51822 Product Specification v1.3

8.15 Random Number Generator (RNG) specifications..............................................................................47

8.16 ECB/CCM/AAR specifications .....................................................................................................................47

8.17 Watch Dog Timer specifications ...............................................................................................................47

8.18 Quadrature Decoder specifications.........................................................................................................48

8.19 NVMC specifications......................................................................................................................................48

8.20 General purpose I/O (GPIO) specification..............................................................................................48

9 Mechanical specifications ..................................................................................................................... 49

9.1 QFN48 package...............................................................................................................................................49

9.2 WLCSP package...............................................................................................................................................50

10 Ordering information ............................................................................................................................ 51

10.1 Package marking ............................................................................................................................................51

10.2 Order code ........................................................................................................................................................51

10.3 Abbreviations...................................................................................................................................................51

10.4 Code ranges and values...............................................................................................................................52

10.5 Product options ..............................................................................................................................................53

11 Reference circuitry.................................................................................................................................. 54

11.1 PCB guidelines.................................................................................................................................................54

11.2 QFN48 package...............................................................................................................................................55

11.3 WLCSP package...............................................................................................................................................61

12 Glossary .................................................................................................................................................... 67