User Manual

deRFsamR21E
-23S00/-23S20
Datasheet
1. General description
The deRFsamR21E is a 2.4GHz ZigBee 3.0 radio module
series which integrates the SoC ATSAMR21E18 from
Microchip / Atmel together with a 4 Mbit data flash on a tiny
size of 21 mm x 13 mm. The microcontroller ATSAMR21E18
integrates a powerful and energy efficient 32-Bit ARM Cortex-
M0+ core together with a 2.4 GHz ZigBee radio transceiver.
The module comes with 16 I/O’s, 256 kbit internal program
flash and 4 Mbit data flash for firmware updates over the air
and data storage. For reliable assembly the module offers
SMD solderable side contacts in 50 mil / 1.27 mm grid. The
module offers ZigBee 3.0 support for smart devices.
Two radio module variants are available:
 deRFsamR21E-23S00: integrated RF-design with
chip antenna
 deRFsamR21E-23S20: coaxial u.FL-connector for
external antenna applications as well as a RF-pad for
custom RF-designs e.g. external frontend or antenna
diversity
deRFsamR21E-23S00
deRFsamR21E-23S20
2. Features
 ATSAMR21E18 Single-chip ARM Cortex-M0+ based 32-bit Microcontroller with Low
Power 2.4 GHz Transceiver for IEEE 802.15.4 and ZigBee Applications with 256 KB
Flash and 16 I/O’s - all accessible outside the module (four occupied by data flash)
- Maximum operating frequency 48 MHz
- 128-bit AES crypto engine
- 32-bit MAC symbol counter
- Temperature sensor
- Automatic transmission modes
 4 Mbit data flash for firmware updates over the air and data storage
 Ready-to-use RF design
 Radio module with a link budget of up to 103 dBm
 CE compliant according to RED 2014/53/EU and FCC certified
 Single 2.5 V - 3.6 V supply
 Industrial temperature range -40°C to 85°C
 1.27 mm / 50 mil pin header with several alternative functions:
- Analog input (12-bit, 350ksps Analog-to-Digital Converter)
- PWM output
- TWI (I2C up to 3.4MHz)
- SPI
- UART
- USB
- GPIO
- SWD programming interface
 High precision 16 MHz crystal oscillator