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A9112
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General Description
A9112 is a high performance and low cost Sub1GHz ISM band system-on-chip (SoC) wireless transceiver. This device integrates high speed pipeline 8051 MCU, 16KBytes In-system programmable flash memory, 2KB SRAM, various powerful functions and excellent performance of Sub1GHz GFSK/FSK transceiver. A9112 has various operating modes, making it highly suited for systems where ultra-low power consumption is required. A9112 has a 8bit ADC for RSSI and 4 channel 12bit ADC for general purpose. Three kinds of serial communication port (SPI, I2C and UART) can interact with other device(s).

A9112 is one of AMICCOM sub1GHz family. It integrates AMICCOM sub1GHz transceiver well and offers a low cost solution with advanced radio features such as high output power amplifier and low noise receiver. Therefore, A9112 is very suitable for long LOS (line-of-sight) applications without the need to add an external LNA or PA.

The on-chip data rate divider supports programmable on-air data rates from 2K to 250Kbps to satisfy different system requirements. For a battery powered system, A9112 supports fast PLL settling time, Xtal settling time and on-chip Regulator settling time to reduce average power consumption.
 Small Package size (QFN5X5, 40 pins).
 High performance pipeline complicated 8051
 Operation clock: 1, 1/2, 1/4, 1/8, 1/16, 1/32 of crystal oscillator.
 16KB Flash memory, 2KB SRAM
 UART, I2C, SPI serial communication
 Three 16/8-bit counter/timers
 Two channel PWM
 Watchdog timer
 Sleep timer
 In-Circuit Debugger
 In-System programming/ In-Application programming
 24 GPIO
 Four channel 12bit SAR ADC
 One channel 8 bit ADC for RSSI and battery detect
 Programmable threshold of carrier detect.
 Frequency band: 315/433/470/868/915 MHz.
 FSK and GFSK modulation.
 Programmable data rate from 2Kbps to 250Kbps.
 RX Current consumption (AGC Off) 433MHz: 18mA.
 TX Current consumption 433MHz: 43mA @ 13dBm.
 PM3 current (0.8uA without sleep timer).
 On chip regulator, support input voltage 2.1 ~ 3.6 V.
 High RX sensitivity 433MHz.
 -109dBm at 50Kbps on-air data rate.
 -107dBm at 100Kbps on-air data rate.
 -103dBm at 150Kbps on-air data rate.
 -102dBm at 250Kbps on-air data rate.
 Support low cost crystal 12.8 MHz /16 MHz).
 Support RTC clock 32.768KHz
 Fast PLL settling time (35 us).
 9-bits Digital RSSI and Auto RSSI measurement
 Auto Calibrations.
 Auto FCS (CRC) and Filtering.
 On-chip full range VCO and Fractional-N PLL synthesizer.
 On-chip low power RC oscillator for WOR (Wake on RX) function.
 AFC (Auto Frequency Compensation) for frequency drift due to Xtal aging.
 Separated 64 bytes FIFO for RX and TX.
 Wireless sensor networks
 Industrial monitoring and control
 Wireless alarm and security system
 Wireless ISM band data communication
 Remote control
 Home and building automation
Datasheet
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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