ISD91260BRI

I91260BRI is Nuvoton’s Audio SoC based on ARM Cortex-M0 core running up to 48 MHz with 128 KB of flash memory and 12 KB of SRAM.

I91260BRI is equipped with a variety of peripheral devices and serial interfaces such as Timers, Watchdog Timer (WDT), Real-time Clock (RTC), Peripheral Direct Memory Access (PDMA), full range of serial interfaces (UART, SPI/SSP, I²C), PWM, GPIO, 12-bit SAR ADC Converter, LDO, Low Voltage Detector and Brown-out detector.

The core features for I91260BRI Audio SoC includes audio I/O interfaces such as I²S, DMIC input and Differential Audio PWM output.

Specifically, I91260BRI provides 21-bit precision Bridge Sense ADC.

Bridge Sense ADC

• On Chip Calibration
• 8 steps Programmable Gain Amplifier (BSPGA)
• Programmable data output rate
• 21 bit precision @ moving average 6.4 SPS

Applications

• Customer Medical Detection Device - Smart Scale, Smart thermometer
• Voice input product with Sensor Feedback - Smart Home Appliance
• Industrial IoT Sensor Bridge with Voice Feedback

Key Features

• Core
  • Arm^® Cortex^®-M0 processor running up to 48MHz
• Memories
  • 128KB Flash
  • 12KB embedded SRAM
  • 4 KB Flash for user program loader ( LDROM )
  • ISP / ICP / IAP programming
• Clocks
  • Built-in trimmable oscillator with range of 16-48MHz
  • External 32kHz crystal input for RTC function and low power system operation
  • External 12MHz crystal input for precise timing operation
• Timers
  • 2 channels 32-bit timer
  • 2 channels 16-bit timer
• PWMs
  • 4 channels 16-bit PWM or 2 sets of complementary paired PWM
• Communication Interfaces
  • 2-set of UART interface
  • 2-set of SPI interface
  • 1-set of I²C interface
• Audio Interfaces
  • Differential Audio PWM Output (DPWM), Supports Sample Rate from 8~48KHz, 0.5W drive@8ohm
  • Digital MIC Input
  • 1-set of I²S interface
• GPIOs
  • Four I/O modes: Quasi bi-direction / Push-Pull output / Open-Drain output / Input with high impedance
  • Maximal 32 GPIOs
• Peripherals
  • Multi-Function Timers, WDT, RTC
  • PDMA
  • Built-in Low Dropout Regulator(LDO)
  • Over Temperature Alarm
  • 12-bit SAR ADC with 700K SPS
• Operating Characteristics
  • Wide voltage range: 1.8V ~ 5.5V
  • Temperature range: -40°C ~ 85°C
• Package
  • LQFP-64 (7x7mm)

Technical Documents

• For more details, please visit Nuvoton Official Website: GO