I91260BRI

Application Specific Microcontrollers Overview

The ISD91260BRI is an audio system-on-chip from Nuvoton Technology Corporation, part of the ChipCorder series. It integrates an ARM Cortex-M0 core operating at up to 48 MHz with 128 KB flash and 12 KB SRAM. Key features include I2S, DMIC input, differential audio PWM output, and a 21-bit precision Bridge Sense ADC with on-chip calibration and programmable gain. The device supports various serial interfaces including UART, SPI, and I2C, along with timers, RTC, and PDMA for efficient data handling in voice and sensor applications.

Application Specific Microcontrollers Feature Summary

• ARM Cortex-M0 core running up to 48 MHz with 128 KB Flash and 12 KB SRAM
• 21-bit precision Bridge Sense ADC with 8-step Programmable Gain Amplifier (BSPGA)
• Audio I/O interfaces including I2S, DMIC input, and Differential Audio PWM output
• Comprehensive peripheral set: UART, SPI/SSP, I2C, PWM, GPIO, RTC, WDT, and PDMA

Application Specific Microcontrollers Applications

• Smart scales and smart thermometers for medical detection devices
• Voice input products with sensor feedback for smart home appliances
• Industrial IoT sensor bridges requiring voice feedback capabilities

Application Specific Microcontrollers Part Context

The ISD91260BRI belongs to Nuvoton's ChipCorder family, designed specifically for audio recording and playback applications. It serves as a specialized Audio SoC that combines processing power with dedicated audio peripherals and high-precision analog-to-digital conversion for sensor interfacing.

Application Specific Microcontrollers Replacement Considerations

The NM-I912 evaluation board is designated for the ISD91260 variant. Developers should verify pin compatibility and firmware support when transitioning between specific suffixes within the ISD912xx family, as peripheral configurations may vary slightly.