M091YD2AE

Not Recommended for New Design (NRND)

Last Order Date: Aug. 31, 2026

EOL Date: Dec. 31, 2026

The M091YD2AE is 32-bit microcontroller is designed for analog sensor applications. It features rich analog peripherals including 4 sets of 8 MHz gain bandwidth (GBW) with 50 µV input offset voltage operational amplifier (OPA), 4 sets of 12-bit DAC, 16 channels of 2 MSPS 12-bit SAR ADC, built-in temperature sensor with ±1.6°C deviation from 0°C to 70°C and ±2°C deviation from -40°C to 105°C.

The M091YD2AE is based on Arm Cortex-M0 core with 32-bit hardware multiplier/divider. It runs up to 72 MHz and features 64 Kbytes Flash memory, 8 Kbytes SRAM, 2.7V ~ 3.6V operating voltage, 5V I/O tolerance, and -40°C to +105°C operating temperature.

The M091YD2AE provides plenty of peripherals including up to 6 sets of 32-bit timers, 1 set of UART with RS485 and One-wire mode, 1 set of SPI, 2 sets of I²C supporting 1 MHz Slave mode, 6 channels of 16-bit BPWM, and up to 7 channels of PDMA to offload CPU loading.

To fit the small form factor requirement of the analog sensor, the M091YD2AE provides the QFN 48-pin (5x5 mm) small form factor package to make the neat and compact PCB design.

For the development system, Nuvoton provides the NuMaker evaluation board and Nuvoton Nu-Link debugger. The 3rd Party IDE such as Keil MDK, IAR EWARM, and Eclipse IDE with GNU GCC compilers are also supported.

Applications

• Photoelectric sensor
• Pressuer sensor
• Positioning sensor

Key Features

• Operating characteristics
  • Voltage range: 2.7V to 3.6V
  • Temperature range: -40°C to +105°C
  • EFT 4.4 kV
  • ESD HBM 4 kV
• Core
  • Arm Cortex-M0 core running up to 72 MHz
• Memories
  • 64 KB Flash
  • 8 KB SRAM
  • 2 KB Flash for user program loader (LDROM)
  • 512 Bytes security protection ROM (SPROM)
  • ISP/ICP/IAP programming
• Clocks
  • Internal 48 MHz HIRC (high speed RC oscillator) with variation ± 2 % within all temperature range, variation ± 0.7 % within 0 °C to 70 °C, ±1 % within -20 °C to +105 °C
  • Internal 38.4 kHz LIRC (low speed RC oscillator)
  • One on-chip PLL up to 144 MHz
• Power management
  • Integrated with Power-on Reset, Brown-out Reset and Low Voltage Reset
  • Normal run: 246 μA/MHz
  • Power-down: 4 mA
  • Supports wake up from Power-down mode by: All GPIO pins, WDT, TIMER, UART, I²C, SPI, WWDT
• Timers
  • Up to six 32-bit timers
  • One 24-bit SysTick timer
  • One Independent watchdog
  • One window watchdog
• PDMA
  • Up to 7 channels that can be operated by – software trigger, SPI, UART, I²C, ADC, DAC, PWM and Timer
• BPWM
  • Up to 6 channels of BPWM with one 16-bit timer
• Cryptography Accelerator
  • Support configurable polynomials
• Analog
  • 4 sets of 8 MHz GBW with 50 µV input offset voltage OPA
  • 4 sets of 12-bit DAC
  • Internal reference voltage 2.048/2.5V with 1.5mA external devices driving current capability
  • 16 channels of 12-bit 2 MSPS SAR ADC
  • Temperature sensor with ±1 .6°C deviation within 0°C to 70°C and ± 2°C deviation within all temperature range
  • Supports DAC output retention when system reset
• Communication interfaces
  • 1 set of UART
  • 2 sets of 1MHz I²C interfaces
  • 1 set of SPI interface (Master mode: 24MHz, Slave mode: 16 MHz)
• Hardware Manchester Codec
  • Manchester encoded/decoded data
  • Configurable Manchester format
  • Configurable Manchester Code Bit Rate
  • Supports programmable 8/16/32-bit CRC polynomials
  • Supports PDMA transfer
• 29 I/O with interrupt capability
  • Schmitt trigger input
  • Four I/O modes
  • Supports independent pull-up control
• Serial Wire Debug (SWD)
  • Nuvoton Nu-Link debugger support
• 96-bit Unique ID ( UID )
• 128-bit Unique Customer ID ( UCID )
• Package
  • QFN48 (5 mm x 5 mm)

Technical Documents

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