2. EZR32LG330 System-on-Chip Summary

The EEZR32LG330 Wireless MCU is a single-chip solution that combines an Leopard Gecko family MCU solution with an integrated

EZRadio or EZRadioPRO sub-GHz RF transceiver. These products are designed to address the specific requirements of low-power

embedded systems requiring an RF bidirectional communication link.

The block diagram of the EZR32LG330 is shown in the figure below.

Figure 2.1. EZR32LG330 block diagram

For a complete feature set and in-depth information on the modules, the reader is referred to the EZR32LG330 Reference Manual

2.1 EZR32 Wireless MCU

The EZR32 Wireless MCU are the world’s most energy friendly Wireless Microcontroller. With a unique combination of the powerful 32-

bit ARM Cortex-M3, innovative low energy techniques, short wake-up time from energy saving modes, and a wide selection of peripher-

als, the EZR32 LG is well suited for any battery operated application as well as other systems requiring high performance and low-

energy consumption.

2.2 EZRadioPRO RF Transceiver

The EZR32LG family of devices is built using high-performance, low-current EZRadio and EZRadioPRO RF transceivers covering the

sub-GHz frequency bands from 142 to 1050 MHz. These devices offer outstanding sensitivity of up to –133 dBm (using EZRadioPRO)

while achieving extremely low active and standby current consumption. The EZR32LG devices using the transceiver offer frequency

coverage in all major bands and include optimal phase noise, blocking, and selectivity performance for narrow band and licensed band

applications, such as FCC Part 90 and 169 MHz wireless Mbus. The 69 dB adjacent channel selectivity with 12.5 kHz channel spacing

ensures robust receive operation in harsh RF conditions, which is particularly important for narrow band operation. The active mode TX

current consumption of 18 mA at +10 dBm and RX current of 10 mA coupled with extremely low standby current and fast wake times is

optimized for extended battery life in the most demanding applications. The EZR32LG devices can achieve up to +27 dBm output pow-

er with built-in ramping control of a low-cost external FET. The devices can meet worldwide regulatory standards: FCC, ETSI, and

ARIB. All devices are designed to be compliant with 802.15.4g and WMbus smart metering standards. The devices are highly flexible

and can be programmed and configured via Simplicity Studio, available at www.silabs.com.

For a complete feature set and in-depth information on the modules, the reader is referred to the Data Sheet "Si4463-61-60-C High-

Performance, Low-Current Transceiver".

2.3 Communcation Between the MCU and the Radio

Communication between the radio and MCU are done over USART, PRS and IRQ, which requires the pins to be configured in the fol-

lowing way:

BRD4503A (Rev. B00)

EZR32LG330 System-on-Chip Summary

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