Index > Product > 2.4 GHz Short Range Devices > A8125M0
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General Description
A8125M0 is a high performance and low cost 2.4GHz ISM band FSK/GFSK wireless SoC. It integrates M0 micro controller, 128KBytes flash memory and 32KBytes SRAM.

For packet handling, A8125M0 has built-in separated 64-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, A8125M0 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, A8125M0 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 – 2500MHz.
 FSK and GFSK modulation
 High sensitivity:
 -96dBm at 500Kbps data rate
 -93dm at 1Mbps data rate
 -90dBm at 2Mbps data rate
 Programmable data rate 8K ~ 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 Frequency Compensation
 Auto CRC Check and filtering
 Separated 64 bytes RX and TX FIFO
 Support logical FIFO extension up to 256 bytes
 Auto-ACK and Auto-resend scheme
 Clear channel assessment (CCA)
 Support ED (Energy Detect) for CCA
 Auto CSMA-CA

Low Power
 Wide Range Operation Voltage from 2.0V ~ 3.6V
 RX current consumption with MCU stop and DC-DC turn on: 7.1mA @VDD_IO= 3.3V
 TX current consumption with MCU stop and DC-DC turn on: 9.2mA @ 5dBm, VDD_IO=3.3V
 Power saving MODE without sleep timer, 1KB SRAM retention (1.7uA)
 Power saving MODE with sleep timer, 1KB SRAM retention (2uA)

 High performance ARM-M0 MCU
 128KB 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
 8 channels PWM
 Watchdog timer
 Two 24-bit Sleep timer by IRC
 In-Circuit Debugger
 In-System programming/ In-Application programming
 24 GPIO and Key wake-up
 Built-in thermal sensor for monitoring relative temperature
 Built-in eight channels 12-bits ADC for general purpose analog input
 Built-in Low Battery Detector
 Built-in AES128 co-processor

 Support ISO14443 type-A PICC
 Data rate: 106Kbps
 Integrate load modulation capacitor
 7 Byte UID
 Wireless sensor network
 2.4GHz active RFID
 2.4GHz ISM system
 Smart remote controller
 Home and building automation
 Wireless toys and game controllers
Application Note
Reference circuit design (Module)
Reference code
Evaluation kit (EK)
Development Board (DVP)
ICE tool
Flash/OTP programming tool
Production test tool
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