M251FC2AE

The NuMicro® M251FC2AE is a low-power microcontroller based on Arm® Cortex®-M23 core for Armv8-M architecture. It runs up to 48 MHz with 32 Kbytes embedded Flash memory and 8 Kbytes embedded SRAM , 4 Kbytes Flash loader memory ( LDROM ) for In-System Programming ( ISP ) , The 32-bit low-power microcontrollers supports wide supply voltage from 1.8 ~ 5.5 V and operating temperature range from - 40 ℃ ~ + 105 ℃ .

The NuMicro® M251FC2AE behaves low power consumption in Normal Run mode 138 μA / MHz at 48 MHz , Idle mode 60 μA / MHz , power down mode 2.5 μA ( RTC on, RAM retention ) , power down mode 1.7 μA ( RTC off, RAM retention ) and Deep Power-down mode. It’s low power, wide supply voltage and fast wake-up features make it suitable for battery-powered IoT applications.

The NuMicro® M251FC2AE series provides 1-region programable eXecute-Only-Memory ( XOM ) to secure critical program codes. Accompany with 96-bit Unique Identification ( UID ) and 128-bit Unique Customer Identification ( UCID ) to enhance the product security.

The NuMicro® M251FC2AE is equipped with plenty of peripherals such as Timers, Watchdog Timers, RTC, GPIOs x15, up to 9 channels of PWM, Universal Serial Control Interface (USCI) x1, UART x2, QSPI x1, I²C x2, ISO-7816-3 x1, PDMA x5, makes it highly suitable for connecting comprehensive external modules and LED lighting control. The M251FC2AE integrates high performance analog front-end circuit blocks, such as 7 channels of 12-bit 880 kSPS ADC, temperature sensor, low voltage reset ( LVR ) and brown-out detector ( BOD ) to enhance product performance, reduce external components and form factor simultaneously.

The package types of the M251FC2AE is TSSOP20 ( 4.4 mm x 6.5 mm ). Pin-to-pin compatible in same package makes optimizing product features and performance easily.

Target Application:

Smart Home / Smart Home Appliance
Industrial Control / Industrial Automation
Smart City
IoT Device
Security Alarm System
Electronic Payments
Communication Modules
Portable Wireless Data Collector
Smart Door lock
Handheld Medical Device
( GPS ) Location Tracker
Electronic Shelf Labels ( ESL )

Key Features:

• Operating Characteristics
- Voltage range: 1.8 V ~ 5.5 V
- Temperature range: - 40 ℃ ~ 105 ℃

• Core
- Arm® Cortex®-M23, Armv8-M, 48 MHz
- 32-bit H / W multiplier / divider

• Memories
- 32 KB Flash
- 8 KB SRAM
- 4 KB LDROM
- 1-region eXecute-Only-Memory ( XOM )
- ISP / ICP / IAP programming

• Clocks
- 4 ~ 32 MHz external high speed crystal oscillator ( HXT ) for precise timing operation
- 32.768 kHz external low speed crystal oscillator ( LXT ) for RTC function and low-power system operation
- 48 MHz internal high speed RC oscillator ( HIRC ) for system operation
- 4.032 MHz internal high speed RC oscillator ( MIRC ) for system operation
- 38.4 kHz internal low speed RC oscillator ( LIRC ) for Watchdog Timer and wake-up operation.

• Power management
- Integrated with Power-on Reset, Brown-out Reset and Low Voltage Reset
- Built-in LDO

• Low Power Consumption
- 138 μA / MHz in operating mode
- 60 μA / MHz in idle mode
- 2.5 μA in Power down mode ( RTC on, RAM retention )
- 1.7 μA in Power down mode ( RTC off, RAM retention )
- 1.45 μA in Deep Power down mode

• Timers
- Up to 4 * 32-bit timers

• PDMA
- 5 channels

• PWM
- 9-channels PWM
- Supports trigger ADC
- Supports maximum clock frequency up to 48 MHz
- Supports independent mode for PWM output / Capture input channel
- Supports complementary mode for 3 complementary paired PWM output channel

• Analog
- 7 channels 12-bit 880 kSPS ADC

• Communication interfaces
- 1 sets of USCI Configured as UART, SPI or I²C)
- 2 sets of UART interface
- 1 set of QSPI interface
- 2 sets of I²C interfaces
- 1 set of Smart Card Interface (ISO-7816-3)

• 96-bit Unique ID ( UID )

• 128-bit Unique Customer ID ( UCID )

• Packages
- TSSOP20 ( 4.4 mm x 6.5 mm )