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ATSAMR21
Cortex M0+ MCU with
2.4Ghz 802.15.4 Transceiver
SAMR21 System-in-Package
Memory options
Flash: 64 / 128 / 256 KB
SRAM: 8 / 16 / 32 KB
MCU frequency
Upto 48MHz
Supply Voltage
1.8V – 3.6V
RF Performance
Max Tx Power: +4 dBm
Min Rx Sensitivity: -99 dBm
Power
consumption
Active MCU: <140µA/MHz (CoreMark
®
)
Tx: 13.8mA(@4dBm), 11.8mA(@0dBm)
(excl. MCU)
Active Rx: 11.8 mA (excl. MCU)
Rx Listen: 6 mA (excl. MCU)
Sleep: 4 µA with RTC
Packages
32 pin 5x5mm
48 pin 7x7mm
Temp Ranges
-40 to +85 ˚C / -40 to +125˚C
Other features
HW AES
Automatic external FEM control
Antenna Diversity
Capacitive Touch HW engine (PTC)
High Data Rates (upto 2Mbps)
Integrated 32KHz crystal
Ranging engine
802.15.4 PHY
SPI
RF233
SAMD21
Application
RF Stacks
Key peripherals (QFN48)
• 5x SERCOM (I
2
C, SPI, or USART)
• 4x 16-bit timers
• 15x IRQ
• 8x ADC
• 2x AC
• 1x USB
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