EZR32HG320 Datasheet, PDF (7/87 Pages) Silicon Laboratories – Consumer electronics

EZR32HG320 Data Sheet
System Overview
3.1.23 EZRadio^® and EZRadioPro^® Transceivers
The EZR32HG 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 EZR32HG 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 EZR32HG 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 using the EZRadioPRO tranceiver 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.si-
labs.com.
Communications between the radio and MCU are done over USART and IRQ, which requires the pins to be configured in the following
way:
Table 3.1. Radio MCU Communication Configuration
EZR32HG MCU
PA2
PC0
PC1
PC2
PC3
PC4
RF
SDN
n^SEL
SDI
SDO
SCLK
n^IRQ
EZR32HG Function Assignment
GPIO Output
US1_CS #5
US1_MOSI #5
US1_MISO #5
US1_CLK #5
GPIO_EM4WU6 (GPIO Input with IRQ ena-
bled)
3.1.23.1 EZRadio and EZRadioPRO Transceivers GPIO Configuration
The EZRadio and EZRadioPRO Transceivers have 4 General Purpose Digital I/O pins. These GPIOs may be configured to perform
various radio-specific functions, including Clock Output, FIFO Status, POR, Wake-up Timer, TRSW, AntDiversity control, etc.
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