电子-BK3432Datasheet.pdf

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电子-BK3432Datasheet.pdf,物联网/通信技术蓝牙通信
PBEKEN General Description 1.1 Overview The bK3432 chip is a highly integrated Bluetooth 4.2 dual mode with 2 Mbps data rate option. It integrates a high-performance rf transceiver, baseband, ARM9E core, rich feature peripheral units, programmable protocol and profile to support bLE application. The Flash program memory makes it suitable for customized applications The bk3432 is designed with advanced technology process and integrated with switch DCDC regulator, that it has ultra-low power consumption and ultra-low leakage power. The embedded high order interference suppression filter and fast automatic gain control logic make it work well in high interference environment 1.2 Block Diagram Figure 1 BK3432 Block Diagram PBEKEN 1.3 Features o Bluetooth& SIG Bluetooth Dual Mode 4.2 compliant o Low-power 2.4GHz Transceiver o ARM968E Core Microprocessor integrated e 160 KB programmable Flash for Program and 20 KB RAM for Data e Program code read protection ● Operation voltage from0.9Vto3.6∨ ● Clock 16 MHz crystal reference clock ■64 MHz digita| PLL Clock ■32 kHz ring oscillator External 32 kHz crystal oscillator a MCU can run with any clock source with internal frequency divider Interface and peripheral units a JTAG, I2C SPI interface TWo uArT interface a Multi-channels Pwm output a On-chip 10 bit general ADC a GPIO with multiplexed interface functions True random number generator ypical Package l ype ■32- pin QFn4x4 PBEKEN 2 PiN information 2.1 QFN32 PC5 P03 P34 BK3432 4×4QFN3 P16 P00 ∨cCRF VDD12 ANT XTAL32K 6攴 Figure 2 BK3432 QFN32 pin assignment Table 1 BK3432 QFN32 Pin Description PINName Pin Function Description P05 Digital I/o General purpose Io 12345 P04 Digital Io General purpose IO P03 Digital I/O General purpose IO P02 Digital I/O General purpose io P01 Digital I/O General purpose IO P00 General purpose io 678 Digital I/O VCCRE Power RF pOWer, 1.5 V ANT RE RF signal port BEKEN VCCXTAL Power Crystal power, 1.5 V 10 XTALO Analog 16 MHz crystal output 11 XTALI Analog 16 MHz crystal input 12 P31 Digital I/0 General purpose IO 13 P32 Digital Io General purpose IO 14 P35 Digital I 0 General purpose IO 15 P14 Digital I/O General purpose IO 16 RSTN Analog Active low pin reset 17 XTAL32K Analog 32 kHz Crystal input 18 VDD12 Analog LDO output, 1.5 V 19 P17 Digital I/o General purpose Io 20 P16 Digital Iy0 General purpose IO 21 P34 Digital I/O General purpose Io 22 VCCMCU Power Power, 1.5 23 VCCBAT Analog Power 3v 24 SW Analog Switch regulator pin for two battery mode 25 VSSBAT Analog Ground 26 P33 Digital I/o General purpose Io 27 P13 Digital I/o General purpose Io 28 P12 Digital I0 General purpose IO 29 P11 Digital I/O General purpose io 30 P10 Digital I/o General purpose io 31 P07 Digital I/O General purpose IO 32 P06 Digital I/O General purpose Io 3 Functional Description 3.1 GPIO The bk3432 QFN32 has totally 20 GPIO pins, which can be configured as either input or output. There are secondary functions available for GPIO pins and configurable by firmware PBEKEN At the beginning of the chip starts up, the chip will enter programming mode, JTAG mode or normal according received command from Mode Selecting pin Table 2 BK3432 GPIo function mapping Description PROGRAM Mode Jtag mode Mode Selection pin P00 UART TX UARTI P01 UART RX P02 SCL I/o I2C P03 SDA IO JTAG NTRST P04 SPI SCK I/O SPI MOSI SPI MOSI JTAG TDI P05 SPI MOSI I/O SPI MISO SPI MISO JTAG TDO SPI P06 SPI_MISO/PWM[4 I/O SPI SCK SPI SCK JTAG TCK P07 SPI_NSS/PWM[5] I/0 SPI CS SPI CS JTAG TMS PWMTO](20mA) P11 PWM[1](20mA PWI P12 PWM[2] P13 PWM3] PWM(4 P16 UART2 TX P17 UART2 RX P31 Ch1 P32 UART Ch2 P33 P34 Ch4 P35 Ch5 Each gPio pin can be the source to wake up mcu from shut down state. In the shutdown state, any voltage level change on the pre-configured GPIO pin will trigger the wake-up procedure PBEKEN 3.2 Timers 3.21 PWM Timers There are six 16 bits pwm timers the clock of pwm timers can be selected as 32 KHz clock or 16 MHz clock by register There are two modes of pwm timers one is timer mode and another is PWM mode. The timer mode can generate interrupt to MCU. The PWm mode can generate PWM waveform and output to GPIo pins to drive external device such as LED Six GPio pins can be used to output PWm waveform separately 3.2.2 Watch dog timer and rtc timer The watch dog timer and rtc timer run on the always on power domain, Whose clock source is 32 khz clock The 16 bits watch dog timer runs with 4 kHz frequency that its period can be up to 16 second. After watch dog timer is expired, it will reset the whole chip The 32 bits rtc timer in always on power domain run with ROSC frequency that its period can be up to one day. After rtc timer is expired it will wake up the mcu 3.3 ADC PBEKEN A 10-bit generic adc is integrated in bK3432. Total five external channels and one internal channel can be selected for ADC transfer. It supports both single and continuous mode ADC Channel number ADC Source Channel 1 GPIO31 Channel 2 GPIO32 Channel 3 GPIO33 Channel 4 GPIO34 Channel 5 GPIO35 Channel 7 VCCBAT-pin 3. 4 UART I2C and spi There are two set UARTs. one set i2c and one set spi interface, which support both master and slave mode The uart baud rate can be up to 3. 2 MHZ, and the spi clock speed can be upto4MHz。 3.5 Security There is a true random number generator to make system get better security communcation The flash content will be protected (not readable, but erasable)as long as the lsb bit 3 or bit 5 of the last 32-bit word of last address ox9fFF is write to zero BEKEN 4 Electrical Specifications Table 3 bk3432 rf Characteristics Name Parameter Min Typic Max Unit Comment (Condition) perating Condition VCO Voltage 0.9 30 3.6 TEMP Temperature 40 +27 +125 C Digital input Pin VIH High level VCC-0.3 VCC+0 Low level VSS+0.V Digital output pin VOH High level (Ioh=-0.25mA) VCC-03 VCC VOL Low level(oL=0.25mA) VSS VSS+0.V Normal condition ⅣDD Deep sleep 0.5 UA ⅣVDD Sleep current(RF OFF, 32 1.8 UA kHz clock, dIG Retention) ⅣDD Active RX 3.3 V) 5.1 ma With DCDC requlator IVDD Active TX @-1 dBm ( 3.3 4.8 mA With dcdc regulator Normal re condition FOP Operating frequency 2400 2480 MHZ EXTAL Crystal frequency 16 MHZ RESK Air data rate Mbps Transmitter(1 Mbps mode) PRE Output power 4 dbm PBW Modulation 20 dB MHZ bandwidth PRF1 Out of band emission 2 dB MHZ

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