BL5340 Series - Multi-Core Bluetooth 5.2 + 802.15.4 + NFC Modules
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Specifications

Antenna Type
Integrated Antenna
Bulk or Single
Bulk
Chipset (Wireless)
Nordic nRF5340
Dimension (Height - mm)
2.2 mm
Dimension (Length - mm)
15 mm
Dimension (Width - mm)
10 mm
Frequency Range (Max)
2480 MHz
Frequency Range (Min)
2402 MHz
Frequency Range 2 (Max)
13.56 MHz
Frequency Range 2 (Min)
13.56 MHz
Logical Interfaces
USB, UART, QSPI, SPI, I2S, I2C, PDM, PWM, ADC, GPIO, QDEC, Comparator, Low Power Comparator
OS/Software
Nordic SDK, Zephyr
Packaging
Tape/Reel
Part Group
BL5340 Module
Product Type
Embedded Module
System Architecture
Hostless
Technology
Bluetooth 5.2, NFC
Transmit Power
Up to +5 dBm

Documentation

Name Part Type Last Updated
Product Brief - BL5340 Series 453-00052R Product Brief 11/29/2021
Datasheet - BL5340 Series 453-00052R Datasheet 04/22/2024

Buy Now

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FAQ

When using an external 32.768KHz crystal I am unable to meet the 200mV to 1000mV peak to peak amplitude spec in the data sheet. Will this be a problem?

There are multiple low frequency clock source options that can be used on the BL5340 module:

·        The Internal 32.768 kHz RC oscillator (LFRC)

·        LFXO (32.768kHz crystal oscillator)

·        Low frequency (32.768 kHz) external source

o   A low swing clock

o   A rail-to-rail clock

·        LFSYNTH (32.768kHz Synthesized clock) from HFCLK (LFSYNTH)

The datasheet provides information showing peak-to-peak amplitude for external low swing clock.

BL5340 Series DS Table 7

Peak to Peak amplitude of 200mV to 1000mV is required when using a low swing, low frequency single rail oscillator. This is sometimes misinterpreted for cases using an external 32.768KHz crystal oscillator. An external 32.768KHz oscillator will typically have a swing of less than 200mV.