Ultra Low Power Sub-1GHz Wireless MCU
1. Descriptions of RF Transceiver IC CMT2380F32W:
Employed a 32-bit Cortex-M0+ CPU core and an ultra-low power RF transceiver, the CMT2380F32W is a FSK, GFSK, MSK, GMSK and OOK wireless MCU with high performance and ultra-low power applying to 127 to 1020 MHz band wireless applications. Operating with 1.8 to 3.6 V supply voltage, the CMT2380F32W consumes only 72 mA current while delivering up to 20 dBm power.
2. Features of RF Transceiver IC CMT2380F32W:
MCU Features
32 MHz Cortex-M0+ 32-bit CPU platform
32 kB Flash with erasing protection
4 kB RAM with parity to enhance system stability
16 general purpose I/O interfaces available
Flexible power management system
* 0.5 uA @ 3 V(deep sleep mode): the power consumption when all clocks are off, power-on reset is active, I/O state is maintained, I/O interrupt is active and all registers, RAM, and
CPU stay in data storage status
* 0.8 uA @ 3 V (deep sleep mode): the power consumption when RTCs work
* 150 uA/MHz @3 V @16 MHz: the power consumption when CPU and peripheral modules
run with program Flash operating internally
* 2 us: the chip's wakeup time from ultra-low power mode, the fast response enables mode switching more flexible and efficient
RTC and crystal
* External high speed crystal: 4 – 32 MHz
* External low speed crystal: 32.768 kHz
* Internal high speed clock: 4/8/16/22 and 24 MHz
* Internal low speed clock: 32.8/38.4 kHz
Timer and counter
* 3 general purpose 16-bit timers/counters
* A 16-bit timer/counter available in low power mode
* 3 high performance 16-bit timers/counters capable for capture/compare and PWM output
* One 20-bit programmable counter/watchdog circuit with built-in dedicated ultra-low power
RC-OSC to perform WDT counting
Communication interface
* UART 0 and UART 1 standard communication interface
* One ultra-low power UART(LPUART) supporting for low speed clock
* Standard I2C and SPI communication interface
One 12-bit 1 Msps SAR ADC
2 voltage comparators
Low voltage detector (LVD), configurable 16-level comparison level, support for port voltage and supply voltage monitoring
RF Features
Frequency range: 127 – 1020 MHz
Modem: FSK, GFSK, MSK, GMSK and OOK
Data rate:0.5 – 300 kbps
Sensitivity: -121 dBm @ 434 MHz, FSK
Receiving current: 8.5 mA @ 434 MHz, FSK
Transmitting current: 72 mA @ 20 dBm, 434 MHz
Configurable up to 64-byte FIFO
System Features
Supply voltage:1.8 – 3.6 V
Operating temperature: -40 – 85 ℃
QFN40 5x5 packaging
3. Applications of RF Transceiver IC CMT2380F32W:
Smart grid and automatic meter reading
Home security and building automation
Wireless sensor networks and industrial monitoring
ISM band data communication