Microcontrollers(607)

Smart Home Audio(325)

I91535AQI

DS_I91535AQI_BlockDiagram

 

I91535AQI is an audio system-on-chip (SoC) integrated with high-quality audio features and microcontroller in single chip. I91535AQI can run up to 49 MHz with embedded ARM®Cortex®-M0 32-bit microcontroller core and 64K-byte flash memory which has additional 6KB boot loader flash and 20KB SRAM. The audio features include microphone input ADC and stereo DAC with headphone ouput driver.

I91535AQI also comes with a wide variety of peripherals, such as Timers, Watchdog Timer (WDT), Peripheral Direct Memory Access (PDMA), Serial interfaces (UART, SPI, I2C and I2S), USB, PWM modulators, GPIO, SDADC, SARADC, DAC and Low Voltage Detector.

I91535AQI supports a rich set of power saving modes including Deep Power Down (DPD) mode drawing less than 2uA. A micro-power 10KHz oscillator enables the device to periodically wake up from deep power down to check other events.

Target Applications:

USB headsets
Gaming controllers
USB/I2S audio bridge
Voice communication systems

Key Features:

Core
  - ARM® Cortex®-M0 processor running up to 49MHz
     
Memories
  - 64KB Flash
  - 20KB SRAM
  - 6 KB Flash for user program loader (LDROM)
  - ISP (In-System Programming)
  - ICP (In-Circuit Programming)
     
Clocks
  - Internal 49MHz trimmable high speed RC oscillator (HIRC)
  - Internal 10KHz low speed RC oscillator (LIRC)
  - External 4~24MHz crystal input (HXT)
   
Timers
  - 3x 16-bit timer
   
PWMs
  - 8x 16-bit PWM or 4x complementary paired PWM
     
Communication Interfaces
  - 2x UART
  - 2x SPI
  - 2x I²C
     
Audio Interfaces
  16-bit Sigma-Delta ADC with configurable decimation filter
  - Analog MIC input
  - 1x I²S
     
GPIOs
  - Three I/O modes: Input with pull-up option / Push-Pull output / Open-Drain output
  - Maximal 50 GPIOs
     
Peripherals
  - Multi-Function Timers, WDT
  - PDMA
  - Built-in Low Dropout Regulator (LDO)
  - 12-bit SAR ADC with 200K SPS
     
Operating Characteristics
  - Wide voltage range: 1.7V ~ 3.6V
  - Temperature range: -40°C ~ 85°C
     
Package
  - QFN-48 (5x5mm)
   

 

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