EZR32LG330 Datasheet, PDF (8/87 Pages) Silicon Laboratories – Building and home automation

EZR32LG330 Data Sheet
System Overview
3.1.30 EZRadio^® and EZRadioPro^® Transceivers
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 upto –133 dBm (using EZRadioPro)
while achieving extremely low active and standby current consumption. The EZR32LG devices using the EZRadioPro transceiver offer
frequency coverage in all major bands and include optimal phase noise, blocking, and selectivity performance for narrow band and li-
censed 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 power 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 high-
ly flexible and can be programmed and configured via Simplicity Studio, available at www.silabs.com.
Communications between the radio and MCU are done over USART, PRS and IRQ, which requires the pins to be configured in the
following way:
Table 3.1. Radio MCU Communication Configuration
EZR32LG Pin
PE8
PE9
PE10
PE11
PE12
PE13
PE14
PA15
Radio Assignment
SDN
n^SEL
SDI
SDO
SCLK
n^IRQ
GPIO1
GPIO0
EZR32LG Function Assignment
GPIO Output
Bit-Banged SPI.CS (GPIO Output)
US0_TX #0
US0_RX #0
US0_CLK #0
GPIO_EM4WU5 (GPIO Input with IRQ ena-
bled)
PRS Input
PRS Input
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