Index > Product > 2.4 GHz Short Range Devices > A8131M0
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General Description
A8131M0 is a high performance and low cost 2.4GHz ISM band FSK wireless SoC. It integrates M0 micro controller, 128/256KBytes flash memory and 32KBytes SRAM.

For packet handling, A8131M0 has built-in separated 256-bytes TX/RX FIFO for data buffering and burst transmission, auto-ack and auto-resend, CRC for error packet filtering, FEC for 1-bit data correction per code word, RSSI for clear channel assessment, thermal sensor for monitoring relative temperature, WOR (Wake on RX) function to support periodically wake up from sleep mode to RX mode and listen for incoming packets without MCU interaction. In addition, A8131M0 has built-in AES128 co-processor (Advanced Encryption Standard) for advanced data encryption or decryption which consists of the transformation of a 128-bit block into an encrypted 128-bit block. Those functions are very easy to use while developing a wireless system.

For low current consumption, A8131M0 is integrated with both LDO and DC-DC (buck) so that this device can be operated more efficient. User can configure one of them (LDO or DC-DC) as a powered source for device operations.
 Frequency band: 2400 – 2483.5MHz
 Support FSK mode
 High sensitivity:
 -90dm at FSK 2Mbps data rate
 Programmable data rate:
 FSK: 250K ~ 2Mbps
 Fast settling time synthesizer for frequency hopping system
 Support 16MHz crystal
 Easy to use.
 Change frequency channel by one register setting
 8-bits Digital RSSI for clear channel indication
 Auto RSSI measurement
 Auto WOR (wake up when receive RX packet)
 Auto WOT (wake up to transmit TX packet)
 Auto Calibrations
 Auto IF function
 Auto CRC Check and filtering
 Separated 256 bytes RX and TX FIFO
 Auto-ACK and Auto-resend scheme
Low Power
 Wide Range Operation Voltage from 2.2V ~ 3.6V
 RX current consumption with MCU stop and DC-DC turn on: 8.3mA @VDD_IO= 3.3V
 TX current consumption with MCU stop and DC-DC turn on: 10.3mA @ 5dBm, VDD_IO=3.3V
 Power saving MODE with sleep timer, 8KB SRAM retention (1.2uA)
 High performance ARM-M0 MCU
 128/256KB Flash memory with copy protection, 32KB SARM
 Three UART, one I2C, two SPI serial communication
 Operation clock: 1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64 of crystal oscillator
 Two 32-bit timers and one 32-bit dual mode timer
 7 channels PWM
 Watchdog timer
 Two Sleep timer by IRC with accuracy 0.2% after calibration
 In-Circuit Debugger
 In-System programming/ In-Application programming
 23 GPIO and Key wake-up
 Built-in thermal sensor for monitoring relative temperature
 Built-in 7 channels 12-bits ADC for general purpose analog input
 Built-in Low Battery Detector
 Built-in AES128 co-processor
 Package size: QFN5x5 40 pins

 Wireless sensor network
 2.4GHz active RFID
 2.4GHz ESL
 IEEE 802.15.4 2.4GHz application  Smart remote controller
 Home and building automation
 Wireless toys and game controllers