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A8508
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General Description
A8508 is a high performance and low cost 2.4GHz FSK/GFSK system-on-chip (SoC) wireless transceiver. With on chip fraction-N synthesizer, it can support the application of data rate from 5Kbps to 2Mbps and frequency hopping system and it is designed for Bluetooth Low Energy (Bluetooth 5.0 Single mode).
It is a Bluetooth smart device. This device integrates high speed pipeline 8051 MCU, 128K Bytes In-system programmable flash memory, 8KB SRAM, various powerful functions and excellent performance of a leading 2.4GHz FSK/GFSK RF transceiver. A8508 has various operating modes, making it highly suited for systems where ultra-low power consumption is required.
A8508 has 128K bytes flash that supports AES128 engine and CCM. A8508 has 4 X 48, 6x 32 or 8x 24 segments LCD driver to support LCD display and also built-in RC type ADC converter.
RF
 Frequency band: 2400 – 2483.5MHz.
 Support FSK and GFSK modulation
 High sensitivity:
 -96dBm at 500Kbps data rate
 -92dBm at 1Mbps data rate
 -90dBm at 2Mbps data rate
 Programmable data rate 5K ~ 2Mbps.
 In-System programming/ In-Application programming
 Fast settling time synthesizer for frequency hopping system.
 Support low cost crystal 16 MHz.
 Low cost BLE application
 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.
 Separated 64 bytes RX and TX FIFO
Low Power
 RX current consumption (AGC on) with MCU in operation mode: 20mA
 TX current consumption with MCU in operation mode (19.5mA @ 0dBm, 24mA @ 6dBm output power).
 PM3 mode current without sleep timer:1.5 uA
 PM3 (with sleep timer) with LCD without LCD panel on: 4 uA
Microcontroller
 High performance pipeline complicated 8051
 128KB Flash memory with copy protection, 8KB SARM
Peripherals
 24 GPIO for QFN 8x8 68 pins
 Built-in eight channels 12-bits ADC for general purpose analog input (0V ~ 1.8 V).
 Built-in Low Battery Detector.
 Built-in thermal sensor for monitoring relative temperature.
 Built-in one channel 8-bits ADC for external analog voltage (0V ~ 1.2V).
 LCD configurable output for 4 x 48, 6 x32, or 8 x 24 segments
 Operation clock: 1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64 of crystal oscillator.
 UART, I2C, SPI serial communication
 Three16/8-bit counter/timers
 Four Channel PWM
 Watchdog timer
 Two 16-bit Sleep timer
 In-Circuit Debugger
 2 channel RC type ADC.
Layout
 Package: QFN10X10 88 pins or QFN8X8 68 pins.
 2400 ~ 2483.5 MHz ISM frequency hopping system
 Smart remote controller
 Home and building automation
 Wireless keyboard and mouse
 Wireless toy and gaming
 Helicopter and airplane radio controller
 Bluetooth smart device
Datasheet
Application Note
Reference circuit design (Module)
Reference/LIB code
Evaluation kit (EK)
Development Board (DVP)
ICE tool
Flash/OTP programming tool
Production test tool
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