BlueNRG Bluetooth® low energy wireless network processor Datasheet - production data Features Bluetooth specification v4.0 compliant master and slave single-mode Bluetooth low energy network processor Embedded Bluetooth low energy protocol stack: GAP, GATT, SM, L2CAP, LL, RFPHY Bluetooth low energy profiles provided separately Operating supply voltage: from 2.0 to 3.6 V 8.2 mA maximum TX current (@0 dBm, 3.0 V) Down to 1.7 µA current consumption with active BLE stack Integrated linear regulator and DC-DC stepdown converter Up to +8 dBm available output power (at antenna connector) Excellent RF link budget (up to 96 dB) Accurate RSSI to allow power control Proprietary application controller interface (ACI), SPI based, allows interfacing with an external host application microcontroller Full link controller and host security High performance, ultra-low power CortexM0 32-bit based architecture core May 2015 On-chip non-volatile Flash memory AES security co-processor Low power modes 16 or 32 MHz crystal oscillator 12 MHz ring oscillator 32 kHz crystal oscillator 32 kHz ring oscillator Compliant with the following radio frequency regulations: ETSI EN 300 328, EN 300 440, FCC CFR47 Part 15, ARIB STD-T66 Available in QFN32 (5 x 5 mm) and WLCSP34 (2.66 x 2.56 mm) packages Operating temperature range: -40 °C to 85 °C Applications Watches Fitness, wellness and sports Consumer medical Security/proximity Remote control Home and industrial automation Assisted living Mobile phone peripherals PC peripherals Table 1: Device summary Order code Package Packing BLUENRGQTR QFN32 (5 x 5 mm) Tape and reel BLUENRGCSP WLCSP34 (2.66 x 2.56 mm) Tape and reel DocID025108 Rev 6 This is information on a product in full production. 1/44 www.st.com Contents BlueNRG Contents 1 Description....................................................................................... 5 2 General description ......................................................................... 6 3 Pin description ................................................................................ 8 4 5 Application circuits ....................................................................... 11 Block diagram and descriptions .................................................. 15 5.1 Core, memory and peripherals ........................................................ 15 5.2 Power management ........................................................................ 16 5.3 Clock management ......................................................................... 17 5.4 Bluetooth low energy radio .............................................................. 17 6 Operating modes ........................................................................... 19 7 Application controller interface .................................................... 22 8 9 Absolute maximum ratings and thermal data ............................. 23 General characteristics ................................................................. 24 10 Electrical specification .................................................................. 25 10.1 Electrical characteristics .................................................................. 25 10.2 RF general characteristics .............................................................. 28 10.3 RF transmitter characteristics.......................................................... 28 10.4 RF receiver characteristics .............................................................. 29 10.5 High speed crystal oscillator (HSXOSC) characteristics ................. 31 10.5.1 11 12 13 2/44 High speed crystal oscillator (HSXOSC) .......................................... 32 10.6 Low speed crystal oscillator (LSXOSC) characteristics ................... 33 10.7 High speed ring oscillator (HSROSC) characteristics ..................... 33 10.8 Low speed ring oscillator (LSROSC) characteristics ....................... 33 10.9 N-fractional frequency synthesizer characteristics .......................... 34 Package information ..................................................................... 35 11.1 QFN32 package information ........................................................... 36 11.2 WLCSP34 package information ...................................................... 38 PCB assembly guidelines ............................................................. 40 Revision history ............................................................................ 42 DocID025108 Rev 6 BlueNRG List of tables List of tables Table 1: Device summary ........................................................................................................................... 1 Table 2: Pinout description ....................................................................................................................... 10 Table 3: External component list .............................................................................................................. 13 Table 4: SPI interface ............................................................................................................................... 15 Table 5: BlueNRG operating modes ......................................................................................................... 20 Table 6: BlueNRG transition times ........................................................................................................... 21 Table 7: Absolute maximum ratings ......................................................................................................... 23 Table 8: Thermal data ............................................................................................................................... 23 Table 9: Recommended operating conditions .......................................................................................... 24 Table 10: Electrical characteristics ........................................................................................................... 25 Table 11: RF general characteristics ........................................................................................................ 28 Table 12: RF Transmitter characteristics .................................................................................................. 28 Table 13: RF receiver characteristics ....................................................................................................... 29 Table 14: High speed crystal oscillator characteristics ............................................................................. 31 Table 15: Low speed crystal oscillator characteristics .............................................................................. 33 Table 16: High speed ring oscillator characteristics ................................................................................. 33 Table 17: Low speed ring oscillator characteristics .................................................................................. 33 Table 18: N-fractional frequency synthesizer characteristics ................................................................... 34 Table 19: QFN32 (5 x 5 x 1 pitch 0.5 mm) mechanical data .................................................................... 37 Table 20: WLCSP34 (2.66 x 2.56 x 0.5 pitch 0.4 mm) mechanical data .................................................. 39 Table 21: Flip Chip CSP (2.66 x 2.56 x 0.5 pitch 0.4 mm) package reflow profile recommendation ....... 40 Table 22: Document revision history ........................................................................................................ 42 DocID025108 Rev 6 3/44 List of figures BlueNRG List of figures Figure 1: BlueNRG application block diagram ............................................................................................ 7 Figure 2: BlueNRG pinout top view (QFN32) ............................................................................................. 8 Figure 3: BlueNRG pinout top view (WLCSP34) ........................................................................................ 9 Figure 4: BlueNRG pinout bottom view (WLCSP34) .................................................................................. 9 Figure 5: BlueNRG application circuit: active DC-DC converter QFN32 package ................................... 11 Figure 6: BlueNRG application circuit: non active DC-DC converter QFN32 package ............................ 12 Figure 7: BlueNRG application circuit: active DC-DC converter WLCSP package .................................. 12 Figure 8: BlueNRG application circuit: non active DC-DC converter WLCSP package ........................... 13 Figure 9: BlueNRG block diagram ............................................................................................................ 15 Figure 10: Power management strategy using LDO ................................................................................ 16 Figure 11: Power management strategy using step-down DC-DC converter .......................................... 17 Figure 12: Simplified state machine .......................................................................................................... 20 Figure 13: Simplified block diagram of the amplitude regulated oscillator ............................................... 32 Figure 14: QFN32 (5 x 5 x 1 pitch 0.5 mm) package outline .................................................................... 36 Figure 15: QFN32 (5 x 5 x 1 pitch 0.5 mm) package detail "A" ................................................................ 37 Figure 16: WLCSP34 (2.66 x 2.56 x 0.5 pitch 0.4 mm) package outline .................................................. 38 Figure 17: Flip Chip CSP (2.66 x 2.56 x 0.5 pitch 0.4 mm) package reflow profile recommendation ...... 40 4/44 DocID025108 Rev 6 BlueNRG 1 Description Description The BlueNRG is a very low power Bluetooth low energy (BLE) single-mode network processor, compliant with Bluetooth specification v4.0. The BlueNRG can act as master or slave. The entire Bluetooth low energy stack runs on the embedded Cortex M0 core. The non-volatile Flash memory allows on-field stack upgrading. The BlueNRG allows applications to meet the tight advisable peak current requirements imposed by the use of standard coin cell batteries. The maximum peak current is only 10 mA at 1 dBm of output power. Ultra low-power sleep modes and very short transition times between operating modes allow very low average current consumption, resulting in longer battery life. The BlueNRG offers the option of interfacing with external microcontrollers using SPI transport layer. DocID025108 Rev 6 5/44 General description 2 BlueNRG General description The BlueNRG is a single-mode Bluetooth low energy master/slave network processor, compliant with the Bluetooth specification v4.0. It integrates a 2.4 GHz RF transceiver and a powerful Cortex-M0 microcontroller, on which a complete power-optimized stack for Bluetooth single mode protocol runs, providing: full master and slave role support GAP: central, peripheral, observer or broadcaster roles ATT/GATT: client and server SM: privacy, authentication and authorization L2CAP Link Layer: AES-128 encryption and decryption An on-chip non-volatile Flash memory allows on-field Bluetooth low energy stack upgrade. The device allows applications to meet the tight advisable peak current requirements imposed by the use of standard coin cell batteries. If the high efficiency embedded DC-DC step-down converter is used, the maximum input current is only 15 mA at the highest output power (+8 dBm). Even if the DC-DC converter is not used, the maximum input current is only 29 mA at the highest output power, still preserving battery life. Ultra low-power sleep modes and very short transition time between operating modes result in very low average current consumption during real operating conditions, providing very long battery life. Two different external matching networks are suggested: standard mode (TX output power up to +5 dBm) and high power mode (TX output power up to +8 dBm). The external host application processor, where the application resides, is interfaced with the BlueNRG through an application controller interface protocol based on a standard SPI interface. 6/44 DocID025108 Rev 6 BlueNRG General description Figure 1: BlueNRG application block diagram Application processor Application Bluetooth Low Energy Profiles BlueNRG Application Controller Interface SPI Application Controller Interface Bluetooth Low Energy Stack 2.4GHz Radio GAMS20150507EC-1213 DocID025108 Rev 6 7/44 Pin description 3 BlueNRG Pin description The BlueNRG pinout is shown in Figure 2: "BlueNRG pinout top view (QFN32)", Figure 3: "BlueNRG pinout top view (WLCSP34)" and Figure 4: "BlueNRG pinout bottom view (WLCSP34)". In Table 2: "Pinout description" a short description of the pins is provided. Figure 2: BlueNRG pinout top view (QFN32) 8/44 DocID025108 Rev 6 BlueNRG Pin description Figure 3: BlueNRG pinout top view (WLCSP34) Note: Top view (balls are underneath). Figure 4: BlueNRG pinout bottom view (WLCSP34) DocID025108 Rev 6 9/44 Pin description BlueNRG Table 2: Pinout description Pins 10/44 Name I/O Description E2 SPI_MOSI I SPI_MOSI 2 E1 SPI_CLK I SPI_CLK 3 D2 SPI_IRQ O SPI_IRQ 4 D1 TEST1 I/O Test pin 5 C1 VBAT3 VDD 2.0-3.6 battery voltage input 6 C2 TEST2 I/O Test pin connected to GND 7 B1 TEST3 I/O Test pin connected to GND 8 B2 TEST4 I/O Test pin connected to GND 9 A1 TEST5 I/O Test pin connected to GND 10 B3 TEST6 I/O Test pin connected to GND 11 A2 TEST7 I/O Test pin connected to GND 12 A3 VDD1V8 O 1.8 V digital core 13 A4 TEST8 I/O Test pin not connected 14 A5 TEST9 I/O Test pin not connected QFN32 WLCSP 1 15 B4 TEST11 I/O Test pin not connected (QFN32) Test pin connected to GND (WLCSP) 16 B5 TEST12 I/O Test pin not connected (QFN32) Test pin connected to GND (WLCSP) 17 A6 FXTAL1 I 16/32 MHz crystal 18 B6 FXTAL0 I 16/32 MHz crystal 19 - VBAT2 VDD 2.0-3.6 battery voltage input 20 C6 RF1 I/O Antenna + matching circuit 21 D6 RF0 I/O Antenna + matching circuit 22 E6 SXTAL1 I 32 kHz crystal 23 E5 SXTAL0 I 32 kHz crystal 24 D5 VBAT1 VDD 2.0-3.6 battery voltage input 25 E4 RESETN I Reset 26 F6 SMPSFILT1 O SMPS output 27 - NO_SMPS I Power management strategy selection 28 F5 SMPSFILT2 I/O SMPS input/output 29 F3 VDD1V2 O 1.2 V digital core 30 E3 TEST10 I/O TEST pin connected to GND 31 F2 SPI_CS I SPI_CS 32 F1 SPI_MISO O SPI_MISO - C3 GND GND Ground - D3 GND GND Ground - D4 GND GND Ground - F4 SMPS-GND GND SMPS ground DocID025108 Rev 6 BlueNRG 4 Application circuits Application circuits The schematics below are purely indicative. For more detailed schematics, please refer to the "Reference design" and "Layout guidelines" which are provided as separate documents. Figure 5: BlueNRG application circuit: active DC-DC converter QFN32 package DocID025108 Rev 6 11/44 Application circuits BlueNRG Figure 6: BlueNRG application circuit: non active DC-DC converter QFN32 package Figure 7: BlueNRG application circuit: active DC-DC converter WLCSP package 12/44 DocID025108 Rev 6 BlueNRG Application circuits Figure 8: BlueNRG application circuit: non active DC-DC converter WLCSP package Table 3: External component list Component Description C1 Decoupling capacitor C2 DC-DC converter output capacitor C3 DC-DC converter output capacitor C4 Decoupling capacitor for 1.2 V digital regulator C5 Decoupling capacitor for 1.2 V digital regulator C6 Decoupling capacitor C7 32 kHz crystal loading capacitor (1) C8 32 kHz crystal loading capacitor (1) C9 RF balun/matching network capacitor High Performance RF balun/matching network capacitor Standard mode C10 RF balun/matching network capacitor High Performance RF balun/matching network capacitor Standard mode C11 RF balun/matching network capacitor High Performance RF balun/matching network capacitor Standard mode C12 Decoupling capacitor C13 Decoupling capacitor C14 RF balun/matching network capacitor High Performance RF balun/matching network capacitor Standard mode C15 RF balun/matching network capacitor High Performance RF balun/matching network capacitor Standard mode DocID025108 Rev 6 13/44 Application circuits BlueNRG Component Description C16 RF balun/matching network capacitor High Performance RF balun/matching network capacitor Standard mode C17 16/32 MHz crystal loading capacitor C18 16/32 MHz crystal loading capacitor C19 Decoupling capacitor for 1.8 V digital regulator C20 Decoupling capacitor for 1.8 V digital regulator C21 RF balun/matching network capacitor High Performance, RF balun/matching network capacitor Standard mode L1 DC-DC converter input inductor, Isat > 100 mA, Q > 25 L2 RF balun/matching network inductor High Performance RF balun/matching network inductor Standard mode L3 RF balun/matching network inductor High Performance RF balun/matching network inductor Standard mode L4 RF balun/matching network inductor High Performance RF balun/matching network inductor Standard mode R1 Pull-down resistor on the SPI_IRQ line (can be replaced by the internal pull-down of the Application MCU) XTAL1 32 kHz crystal (optional) XTAL2 16/32 MHz crystal Notes: (1) Values valid only for the crystal NDK NX3215SA-32.768 kHz-EXS00A-MU00003. For other crystals refer to what specified in their datasheet. 14/44 DocID025108 Rev 6 BlueNRG 5 Block diagram and descriptions Block diagram and descriptions A block diagram of the BlueNRG is shown in Figure 9: "BlueNRG block diagram". In the following subsections a short description of each module is given. Figure 9: BlueNRG block diagram 5.1 Core, memory and peripherals The BlueNRG contains an ARM Cortex-M0 microcontroller core that supports ultra-low leakage state retention mode and almost instantaneously returning to fully active mode on critical events. The memory subsystem consists of 64 KB Flash, and 12 KB RAM , divided in two blocks of 6 KB (RAM1 and RAM2). Flash is used for the M0 program. No RAM or FLASH resources are available to the external microcontroller driving the BlueNRG. The application controller interface (ACI) uses a standard SPI slave interface as transport layer, basing in five physical wires: 2 control wires (clock and slave select) 2 data wires with serial shift-out (MOSI and MISO) in full duplex 1 wire to indicate data availability from the slave Table 4: SPI interface Name Direction Width Description SPI_CS In 1 SPI slave select = SPI enable. SPI_CLK In 1 SPI clock (max 8 MHz). SPI_MOSI In 1 Master output, slave input. DocID025108 Rev 6 15/44 Block diagram and descriptions Name BlueNRG Direction Width Description SPI_MISO Out 1 Master input, slave output. SPI_IRQ Out 1 Slave has data for master. All the SPI pins have an internal pull-down except for the CSN that has a pull-up. All the SPI pins, except the CSN, are in high impedance state during the low-power states. The IRQ pin needs a pull-down external resistor. 5.2 Power management The BlueNRG integrates both a low dropout voltage regulator (LDO) and a step-down DCDC converter, and one of them can be used to power the internal BlueNRG circuitry. However even when the LDO is used, the stringent maximum current requirements, which are advisable when coin cell batteries are used, can be met and further improvements can be obtained with the DC-DC converter at the sole additional cost of an inductor and a capacitor. The internal LDOs supplying both the 1.8 V digital blocks and 1.2 V digital blocks require decoupling capacitors for stable operation. Figure 10: "Power management strategy using LDO" and Figure 11: "Power management strategy using step-down DC-DC converter", show the simplified power management schemes using LDO and DC-DC converter. Figure 10: Power management strategy using LDO 16/44 DocID025108 Rev 6 BlueNRG Block diagram and descriptions Figure 11: Power management strategy using step-down DC-DC converter 5.3 Clock management The BlueNRG integrates two low-speed frequency oscillators (LSOSC) and two High speed (16 MHz or 32 MHz) frequency oscillators (HSOSC). The low frequency clock is used in Low Power mode and can be supplied either by a 32.7 kHz oscillator that uses an external crystal and guarantee up to ±50 ppm frequency tolerance, or by a ring oscillator with maximum ±500 ppm frequency tolerance, which does not require any external components. The primary high frequency clock is a 16 MHz or 32 MHz crystal oscillator. There is also a fast-starting 12 MHz ring oscillator that provides the clock while the crystal oscillator is starting up. Frequency tolerance of high speed crystal oscillator is ±50 ppm. The usage of the 16 MHz (or 32 MHz) crystal is strictly necessary. 5.4 Bluetooth low energy radio The BlueNRG integrates an RF transceiver compliant with the Bluetooth specification and the standard national regulations in the unlicensed 2.4 GHz ISM band. The RF transceiver requires very few external discrete components. It provides 96 dB link budgets with excellent link reliability, keeping the maximum peak current below 15 mA. DocID025108 Rev 6 17/44 Block diagram and descriptions BlueNRG In Transmit mode, the power amplifier (PA) drives the signal generated by the frequency synthesizer out to the antenna terminal through a very simple external network. The power delivered as well as the harmonic content depends on the external impedance seen by the PA. The output power is programmable from -18 dBm to +8 dBm, to allow a user-defined power control system and to guarantee optimum power consumption for each scenario. 18/44 DocID025108 Rev 6 BlueNRG 6 Operating modes Operating modes Several operating modes are defined for the BlueNRG: Reset mode Sleep mode Standby mode Active mode Radio mode Receive Radio mode Transmit Radio mode In Reset mode, the BlueNRG is in ultra-low power consumption: all voltage regulators, clocks and the RF interface are not powered. The BlueNRG enters Reset mode by asserting the external reset signal. As soon as it is de-asserted, the device follows the normal activation sequence to transit to Active mode. In Sleep mode either the low speed crystal oscillator or the low speed ring oscillator are running, whereas the high speed oscillators are powered down as well as the RF interface. The state of the BlueNRG is retained and the content of the RAM is preserved. Depending on the application, part of the RAM (RAM2 block) can be switched off during sleep to save more power (refer to stack mode 1, described in UM1868). While in Sleep mode, the BlueNRG waits until an internal timer expires and then it goes into Active mode. The transition from Sleep mode to Active mode can also be activated through the SPI interface. Standby mode and Sleep mode are equivalent but the low speed frequency oscillators are powered down. In Standby mode the BlueNRG can be activated through the SPI interface. In Active mode the BlueNRG is fully operational: all interfaces, including SPI and RF, are active as well as all internal power supplies together with the high speed frequency oscillator. The MCU core is also running. Radio mode differs from Active mode as also the RF transceiver is active and it is capable of either transmitting or receiving. Figure 12: "Simplified state machine" reports the simplified state machine: DocID025108 Rev 6 19/44 Operating modes BlueNRG Figure 12: Simplified state machine Table 5: BlueNRG operating modes State Digital LDO SPI LSOSC HSOSC Core RF synt. RX chain TX chain OFF OFF OFF OFF OFF OFF OFF ON OFF OFF OFF OFF OFF OFF ON ON OFF OFF OFF OFF OFF ON - ON ON OFF OFF OFF ON - ON ON ON ON OFF ON - ON ON ON OFF ON OFF Reset Register contents lost ON Standby Register contents retained ON Sleep Register contents retained ON Active Register contents retained ON RX Register contents retained ON TX 20/44 Register contents retained DocID025108 Rev 6 BlueNRG Operating modes Table 6: BlueNRG transition times Transition Maximum time 1.5 ms Reset-active (1) Standby-active Sleep-active (1) (1) Active-RX Active-TX RX-TX or TX-RX Condition 32 kHz not available 7 ms 32 kHz RO 94 ms 32 kHz XO 0.42 ms 32 kHz not available 6.2 ms 32 kHz RO 93 ms 32 kHz XO 0.42 ms 125 µs Channel change 61 µs No channel change 131 µs Channel change 67 µs No channel change 150 µs Notes: (1) These measurements are taken using NX3225SA-16.000 MHz-EXS00A-CS05997. DocID025108 Rev 6 21/44 Application controller interface 7 BlueNRG Application controller interface The application controller interface is based on a standard SPI module with speeds up to 8 MHz. The application controller Interface defines a software protocol providing functions to access all the services offered by the layers of the embedded Bluetooth stack. The ACI commands are described in the document "BlueNRG ACI command interface". 22/44 DocID025108 Rev 6 BlueNRG 8 Absolute maximum ratings and thermal data Absolute maximum ratings and thermal data Absolute maximum ratings are those values above which damage to the device may occur. Functional operation under these conditions is not implied. All voltages are referred to GND. Table 7: Absolute maximum ratings Value Uni t DC-DC converter supply voltage input and output -0.3 to +3.9 V 12, 29 DC voltage on linear voltage regulator -0.3 to +3.9 V 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 25, 27, 30, 31, 32 DC voltage on digital input/output pins -0.3 to +3.9 V 13, 14, 15,16 DC voltage on analog pins -0.3 to +3.9 V 17, 18, 22, 23 DC voltage on XTAL pins -0.3 to +1.4 V DC voltage on RF pins -0.3 to +1.4 V Storage temperature range -40 to +125 °C ±2.0 kV Pin Parameter 5, 19, 24, 26, 28 20, 21 (1) TSTG VESD-HBM Electrostatic discharge voltage Notes: (1) +8 dBm input power at antenna connector in Standard mode, +11 dBm in High Power mode, with given reference design. Table 8: Thermal data Symbo l Rthj-amb Rthj-c Value Uni t Thermal resistance junction-ambient 34 (QFN32) 50 (WLCSP36) °C/ W Thermal resistance junction-case 2.5 (QFN32) 25 (WLCSP36) °C/ W Parameter DocID025108 Rev 6 23/44 General characteristics 9 BlueNRG General characteristics Table 9: Recommended operating conditions Symbol VBAT TA 24/44 Parameter Min. Typ. Max. Unit Operating Battery supply voltage 2.0 3.6 V Operating Ambient temperature range -40 +85 °C DocID025108 Rev 6 BlueNRG Electrical specification 10 Electrical specification 10.1 Electrical characteristics Characteristics measured over recommended operating conditions unless otherwise specified. Typical value are referred to T A = 25 °C, VBAT = 3.0 V. All performance data are referred to a 50 W antenna connector, via reference design, QFN32 package version. Table 10: Electrical characteristics Symbol Parameter Test conditions Min. Typ. Max. Unit Power consumption when DC-DC converter active Reset 5 RAM2 OFF 1.3 RAM2 ON 2 Standby 32 kHz XO ON (RAM2 OFF) 1.7 32 kHz XO ON (RAM2 ON) 2.4 32 kHz RO ON (RAM2 OFF) 2.8 32 kHz RO ON (RAM2 ON) 3.5 CPU, Flash and RAM off 2 Sleep Supply current RX TX Standard mode TX High Power mode DocID025108 Rev 6 µA µA Active IBAT nA mA CPU, Flash and RAM on 3.3 High Power mode 7.7 Standard mode 7.3 +5 dBm 11 0 dBm 8.2 -2 dBm 7.2 -6 dBm 6.7 -9 dBm 6.3 -12 dBm 6.1 -15 dBm 5.9 -18 dBm 5.8 +8 dBm 15.1 +4 dBm 10.9 +2 dBm 9 -2 dBm 8.3 -5 dBm 7.7 mA mA mA 25/44 Electrical specification Symbol BlueNRG Parameter Test conditions Min. Typ. -8 dBm 7.1 -11 dBm 6.8 -14 dBm 6.6 Max. Unit Power consumption when DC-DC converter not active Reset 5 RAM2 OFF nA 1.4 Standby RAM2 ON µA 2 32 kHz XO ON (RAM2 OFF) 1.7 32kHz XO ON (RAM2 ON) 2.4 32 kHz RO ON (RAM2 OFF) 2.8 32 kHz RO ON (RAM2 ON) 3.5 Sleep µA Active CPU, Flash and RAM off RX IBAT Supply current TX Standard mode TX High Power mode 2.3 High Power mode 14.5 Standard mode 14.3 mA mA +5 dBm 21 0 dBm 15.4 -2 dBm 13.3 -6 dBm 12.2 -9 dB 11.5 -12 dBm 11 -15 dBm 10.6 -18 dBm 10.4 +8 dBm 28.8 +4 dBm 20.5 +2 dBm 17.2 -2 dBm 15.3 -5 dBm 14 -8 dBm 13 -11 dBm 12.3 -14 dBm 12 mA mA Digital I/O CIN 26/44 Port I/O capacitance 1.29 DocID025108 Rev 6 1.38 1.67 pF BlueNRG Electrical specification Symbol Parameter Test conditions Min. Typ. Max. Unit TRISE Rise time 0.1*VDD to 0.9*VDD, CL = 50 pF 5 19 ns TFALL Fall time 0.9*VDD to 0.1*VDD, CL = 50 pF 6 22 ns T(RST) Hold time for reset 1.5 TC VBAT range 3.0 3.3 3.6 V TC1 VBAT range 2.25 2.5 2.75 V VIL Input low voltage VIH Input high voltage VOL Output low voltage VOH Output high voltage IOL IOH ms VBAT range: TC -0.3 0.8 VBAT range: TC1 -0.3 0.7 VBAT range: TC 2.0 3.6 VBAT range: TC1 1.7 3.6 VBAT range: TC 0.4 VBAT range: TC1 0.7 VBAT range: TC 2.4 VBAT range: TC1 1.7 Low level output current @ VOL (max.) VBAT range: TC 3.4 5.6 7.9 VBAT range: TC1 3.8 6.6 10.1 High level output current @ VOH (min) VBAT range: TC 5.5 10.6 17.6 VBAT range: TC1 3.7 7.2 12.0 DocID025108 Rev 6 V V V V mA mA 27/44 Electrical specification 10.2 BlueNRG RF general characteristics Characteristics measured over recommended operating conditions unless otherwise specified. Typical value are referred to T A = 25 °C, VBAT =3.0 V. All performance data are referred to a 50 W antenna connector, via reference design, QFN32 package version. Table 11: RF general characteristics Symbol 10.3 Parameter Test conditions FREQ Frequency range FCH Channel spacing RFch RF channel center frequency Min. Typ. 2400 Max. Unit 2483.5 MHz 2 MHz 2402 2480 MHz RF transmitter characteristics Characteristics measured over recommended operating conditions unless otherwise specified. Typical value are referred to T A = 25 °C, VBAT = 3.0 V. All performance data are referred to a 50 W antenna connector, via reference design, QFN32 package version. Table 12: RF Transmitter characteristics Symbol Parameter MOD Modulation scheme BT Bandwidth-bit period product Mindex DR Test conditions Max. Unit 0.5 Modulation index 0.45 Air data rate 0.5 0.55 Mbp s 1 Symbol time accuracy PMAX Maximum output power at antenna connector PRFC Minimum output power PRFC RF power accuracy 50 6 dB bandwidth for modulated carrier (1 Mbps) ppm High power +8 +10 dBm Standard mode +5 +7 dBm High power -15 Standard mode -18 dB ±2 Using resolution bandwidth of 100 kHz 500 dB kHz Using resolution bandwidth of 100 kHz and average detector -20 dBm 2 adjacent channel transmit power >3 MHz Using resolution bandwidth of 100 kHz and average detector -30 dBm PSPUR Spurious emission Harmonics included. Using resolution bandwidth of 1 MHz and average detector -41 dBm CFdev Center frequency deviation During the packet and including both initial frequency offset and drift ±150 kHz Frequency drift During the packet ±50 kHz st PRF1 1 adjacent channel transmit power 2 MHz PRF2 nd Freqdrift 28/44 Typ. GFSK STacc PBW1M Min. DocID025108 Rev 6 BlueNRG Electrical specification Symbol Parameter IFreqdrift DriftRatemax ZLOAD 10.4 Test conditions Max. Unit Initial carrier frequency drift ±20 kHz Maximum drift rate 400 Hz/µ s Optimum differential load Min. Typ. Standard mode @ 2440 MHz 25.9 + j44.4 High power mode @ 2440 MHz 25.4 + j20.8 Ω RF receiver characteristics Characteristics measured over recommended operating conditions unless otherwise specified. Typical value are referred to T A = 25 °C, VBAT =3.0 V. All performance data are referred to a 50 W antenna connector, via reference design, QFN32 package version. Table 13: RF receiver characteristics Symbol RXSENS Parameter Test conditions Sensitivity Min. Typ. BER <0.1% -88 8 Standard mode PSAT Saturation BER <0.1% High power mode Unit dBm dBm 11 - Standard mode @ 2440 MHz zIN Max. 31.4 j26.6 Input differential impedance Ω 28.8 j18.5 High power mode @ 2440 MHz RF selectivity with BLE equal modulation on interfering signal C/ICOchannel Co-channel interference Wanted signal=67dBm, BER ≤ 0.1% 9 dBc C/I1 MHz Adjacent (+1 MHz) interference Wanted signal = 67dBm, BER ≤ 0.1% 2 dBc C/I2 MHz Adjacent (+2 MHz) interference Wanted signal = -67 dBm, BER ≤ 0.1% -34 dBc C/I3 MHz Adjacent (+3 MHz) interference Wanted signal=67dBm, BER ≤ 0.1% -40 dBc C/I≥4 MHz Adjacent (≥ ±4 MHz) interference Wanted signal = 67dBm, BER ≤ 0.1% -34 dBc C/I≥6 MHz Adjacent ( ≥ ±6 MHz interference Wanted signal = 67dBm BER ≤ 0.1% -45 dBc C/I≥25 MHz Adjacent ( ≥ ±25 MHz) interference Wanted signal=-67 dBm, BER ≤ 0.1% -64 dBc DocID025108 Rev 6 - 29/44 Electrical specification Symbol C/IImage BlueNRG Parameter Test conditions Image frequency Interference Wanted signal=-67 dBm, BER ≤ 0.1% -2 MHz C/IImage±1 MHz Min. Adjacent (±1 MHz) Interference to inband image frequency Wanted signal=67dBm, BER ≤ 0.1% Typ. Max. dBc -20 -1 MHz 5 -3 MHz -25 Unit dBc Out of Band blocking (interfering signal CW) Interfering signal frequency C/IBlock Wanted signal=67dBm, BER ≤ 0.1%, Measurement resolution 10 MHz 30 MHz – 2000 MHz 2003 MHz – 2399 MHz Interfering signal frequency C/IBlock 2484 MHz – 2997 MHz Wanted signal = -67 dBm, BER ≤ 0.1%, Measurement resolution 3 MHz -35 dBm Wanted signal = -67 dBm, BER ≤ 0.1%, measurement resolution 3 MHz -35 dBm -30 dBm - Interfering signal frequency C/IBlock dBm - Interfering signal frequency C/IBlock -30 3000 MHz – 12.75 GHz Wanted signal=67dBm, BER ≤ 0.1%, measurement resolution 25 MHz Intermodulation characteristics (CW signal at f1, BLE interfering signal at f2) P_IM(3) Input power of IM interferes at 3 and 6 MHz distance from wanted signal Wanted signal = -64 dBm, BER ≤ 0.1% -33 dBm P_IM(-3) Input power of IM interferes at -3 and 6 MHz distance from wanted signal Wanted signal = -64 dBm, BER ≤ 0.1% -43 dBm P_IM(4) Input power of IM interferes at ±4 and ±8 MHz distance from wanted signal Wanted signal=64dBm, BER ≤ 0.1% -33 dBm P_IM(5) Input power of IM interferes at ±5 and ±10 MHz distance from wanted signal Wanted signal = -64 dBm, BER ≤ 0.1% -33 dBm - 30/44 DocID025108 Rev 6 BlueNRG 10.5 Electrical specification High speed crystal oscillator (HSXOSC) characteristics Characteristics measured over recommended operating conditions unless otherwise specified. Typical value are referred to T A = 25 °C, VBAT = 3.0 V. Table 14: High speed crystal oscillator characteristics Symbol fNOM Parameter Test conditions Nominal frequency fTOL Frequency tolerance ESR PD Min. Typ. Max. 16/32 Includes initial accuracy, stability over temperature, aging and frequency pulling due to incorrect load capacitance. Unit MHz ±50 ppm Equivalent series resistance 100 Ω Drive level 100 µW DocID025108 Rev 6 31/44 Electrical specification 10.5.1 BlueNRG High speed crystal oscillator (HSXOSC) The BlueNRG includes a fully integrated, low power 16/32 MHz Xtal oscillator with an embedded amplitude regulation loop. In order to achieve low power operation and good frequency stability of the Xtal oscillator, certain considerations with respect to the quartz load capacitance C0 need to be taken into account. Figure 13: "Simplified block diagram of the amplitude regulated oscillator" shows a simplified block diagram of the amplitude regulated oscillator used on the BlueNRG. Figure 13: Simplified block diagram of the amplitude regulated oscillator Low power consumption and fast startup time is achieved by choosing a quartz crystal with a low load capacitance C0. To achieve good frequency stability, the following equation needs to be satisfied: Equation 1 32/44 DocID025108 Rev 6 BlueNRG Electrical specification Where C1’=C1+CPCB1+CPAD, C2’= C2+CPCB2+CPAD, where C1 and C2 are external (SMD) components, CPCB1 and CPCB2 are PCB routing parasites and CPAD is the equivalent small-signal pad-capacitance. The value of CPAD is around 0.5 pF for each pad. The routing parasites should be minimized by placing quartz and C1/C2 capacitors close to the chip, not only for an easier matching of the load capacitance C0, but also to ensure robustness against noise injection. Connect each capacitor of the Xtal oscillator to ground by a separate via. 10.6 Low speed crystal oscillator (LSXOSC) characteristics Characteristics measured over recommended operating conditions unless otherwise specified. Typical value are referred to T A = 25 °C, VBAT =3.0 V. Table 15: Low speed crystal oscillator characteristics Symbol fNOM Parameter Test conditions Min. Nominal frequency fTOL Frequency tolerance ESR PD Typ. Max. 32.768 Includes initial accuracy, stability over temperature, aging and frequency pulling due to incorrect load capacitance. Unit kHz ±50 ppm Equivalent series resistance 90 kΩ Drive level 0.1 µW Note: These values are the correct ones for NX3215SA-32.768 kHz-EXS00A-MU00003. 10.7 High speed ring oscillator (HSROSC) characteristics Characteristics measured over recommended operating conditions unless otherwise specified. Typical value are referred to T A = 25 °C, VBAT =3.0 V, QFN32 package version. Table 16: High speed ring oscillator characteristics Symbol fNOM 10.8 Parameter Test conditions Min. Nominal frequency Typ. Max. Unit 12 16 MHz Low speed ring oscillator (LSROSC) characteristics Characteristics measured over recommended operating conditions unless otherwise specified. Typical value are referred to T A = 25 °C, VBAT =3.0 V, QFN32 package version. Table 17: Low speed ring oscillator characteristics Symbol Parameter Test conditions Min. Typ. Max. Unit 32 kHz ring oscillator (LSROSC) fNOM Nominal frequency fTOL Frequency tolerance 37.4 kHz ±500 DocID025108 Rev 6 33/44 ppm Electrical specification 10.9 BlueNRG N-fractional frequency synthesizer characteristics Characteristics measured over recommended operating conditions unless otherwise specified. Typical value are referred to T A = 25 °C, VBAT =3.0 V, fc = 2440 MHz. Table 18: N-fractional frequency synthesizer characteristics Symbol PNSYNTH 34/44 Parameter RF carrier phase noise LOCKTIME PLL lock time TOTIME PLL turn on / hop time Test conditions Min. Typ. Max. Unit At ±1MHz offset from carrier -113 dBc/Hz At ±3MHz offset from carrier -119 dBc/Hz At ±6MHz offset from carrier TBD dBc/Hz At ±25MHz offset from carrier TBD dBc/Hz Including calibration DocID025108 Rev 6 40 µs 150 µs BlueNRG 11 Package information Package information In order to meet environmental requirements, ST offers these devices in different grades of ® ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ® ECOPACK is an ST trademark. DocID025108 Rev 6 35/44 Package information 11.1 BlueNRG QFN32 package information Figure 14: QFN32 (5 x 5 x 1 pitch 0.5 mm) package outline 36/44 DocID025108 Rev 6 BlueNRG Package information Table 19: QFN32 (5 x 5 x 1 pitch 0.5 mm) mechanical data mm Dim. Min. Typ. Max. A 0.80 0.85 1.00 A1 0 0.02 0.05 A3 b 0.20 REF 0.25 D 0.25 0.30 5.00 BSC E 5.00 BSC D2 3.2 3.70 E2 3.2 3.70 e 0.5 BSC L 0.30 Ф 0° K 0.20 0.40 0.50 14° Figure 15: QFN32 (5 x 5 x 1 pitch 0.5 mm) package detail "A" QFN32_POA_8362854_B DocID025108 Rev 6 37/44 Package information 11.2 BlueNRG WLCSP34 package information Figure 16: WLCSP34 (2.66 x 2.56 x 0.5 pitch 0.4 mm) package outline See Note 1 WLCSP34_POA_8165249 1. 38/44 The corner of terminal A1 must be identified on the top surface by using a laser marking dot. DocID025108 Rev 6 BlueNRG Package information Table 20: WLCSP34 (2.66 x 2.56 x 0.5 pitch 0.4 mm) mechanical data mm. Dim. Notes Min. Typ. A 0.50 A1 0.20 b 0.27 D 2.50 D1 E Max. 2.56 (1) 2.58 (2) 2.68 (3) 2.00 2.60 2.66 E1 2.00 e 0.40 f 0.28 g 0.33 ccc 0.05 Notes: (1) (2) (3) The typical ball diameter before mounting is 0.25 mm. D = f + D1 + f. E = g + E1 + g. DocID025108 Rev 6 39/44 PCB assembly guidelines 12 BlueNRG PCB assembly guidelines For Flip Chip mounting on the PCB, STMicroelectronics recommends the use of a solder stencil aperture of 330 x 330 µmmaximum and a typical stencil thickness of 125 µm. Flip Chips are fully compatible with the use of near eutectic 95.8% Sn, 3.5% Ag, 0.7% Cu solder paste with no-clean flux. ST's recommendations for Flip Chip board mounting are illustrated on the soldering reflow profile shown in Figure 17: "Flip Chip CSP (2.66 x 2.56 x 0.5 pitch 0.4 mm) package reflow profile recommendation" Figure 17: Flip Chip CSP (2.66 x 2.56 x 0.5 pitch 0.4 mm) package reflow profile recommendation Table 21: Flip Chip CSP (2.66 x 2.56 x 0.5 pitch 0.4 mm) package reflow profile recommendation Value Profile Typ. Max. 0.9 °C/s 3 °C/s 2 °C/s 3 °C/s Peak temp. in reflow 240 - 245 °C 260 °C Time above 220 °C 60 s 90 s Temp. gradient in preheat (T = 70 – 180 °C) Temp. gradient (T = 200 – 225 °C) Temp. gradient in cooling -2 to - 3 °C/s Time from 50 to 220 °C -6 °C/s 160 to 220 s Dwell time in the soldering zone (with temperature higher than 220 °C) has to be kept as short as possible to prevent component and substrate damage. Peak temperature must not exceed 260 °C. Controlled atmosphere (N2 or N2H2) is recommended during the whole reflow, especially above 150 °C. Flip Chips are able to withstand three times the previous recommended reflow profile to be compatible with a double reflow when SMDs are mounted on both sides of the PCB plus one additional repair. 40/44 DocID025108 Rev 6 BlueNRG PCB assembly guidelines A maximum of three soldering reflows are allowed for these lead-free packages (with repair step included). The use of a no-clean paste is highly recommended to avoid any cleaning operation. To prevent any bump cracks, ultrasonic cleaning methods are not recommended. DocID025108 Rev 6 41/44 Revision history 13 BlueNRG Revision history Table 22: Document revision history Date Revision 09-Aug-2013 1 Changes Initial release. 07-Feb-2014 2 Datasheet promoted from preliminary data to production data Added WLCSP34 package to Table 1: "Device summary" Deleted references to “low power ADC” throughout the document. Added pin information for the WLCSP package to Figure 3: "BlueNRG pinout top view (WLCSP34)", Table 2: "Pinout description" Updated Figure 5: "BlueNRG application circuit: active DC-DC converter QFN32 package" and Figure 6: "BlueNRG application circuit: non active DC-DC converter QFN32 package" Added Figure 7: "BlueNRG application circuit: active DC-DC converter WLCSP package" and Figure 8: "BlueNRG application circuit: non active DC-DC converter WLCSP package" Modified High Performance and Standard Mode values in Table 3: "External component list" Changed all references the term “Slave” to “RAM2 OFF”, and “Master” to “RAM2 ON” in Modified title of not found Modified Figure 9: "BlueNRG block diagram" Corrected error in typical BSC value for reference “e” in . Added WLCSP package drawing and dimensions data ( and ) Minor text corrections throughout the document. Added: Figure 3: "BlueNRG pinout top view (WLCSP34)". Updated: 19-Mar-2014 3 Figure 5: "BlueNRG application circuit: active DC-DC converter QFN32 package" and Figure 6: "BlueNRG application circuit: non active DC-DC converter QFN32 package", Figure 7: "BlueNRG application circuit: active DC-DC converter WLCSP package" and Figure 8: "BlueNRG application circuit: non active DC-DC converter WLCSP package". Added: 21-Mar-2014 42/44 4 Section 12: "PCB assembly guidelines". DocID025108 Rev 6 BlueNRG Revision history Date 20-Nov-2014 Revision 5 Changes Updated:Bluetooth specification v4.1 compliancy,Table 2: "Pinout description", Table 3: "External component list", Table 8: "Thermal data", Table 14: "High speed crystal oscillator characteristics", Table 15: "Low speed crystal oscillator characteristics", Table 18: "N-fractional frequency synthesizer characteristics", Section 10.7: "High speed ring oscillator (HSROSC) characteristics" and Section 5: "Block diagram and descriptions", Added: Section 10.5.1: "High speed crystal oscillator (HSXOSC)" 13-May-2015 6 Updated: Features section in cover page; Table 2, replaced reference to Bluetooth specification v4.1 with v4.0 throughout the document, Figure 1: "BlueNRG application block diagram". Minor changes throughout the document to improve readability. DocID025108 Rev 6 43/44 BlueNRG IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2015 STMicroelectronics – All rights reserved 44/44 DocID025108 Rev 6