Especificaciones
Fabricante: STMicroelectronics
Device Type: Mid-range 32-bit ARM Cortex-M4 microcontroller integrated with hardware floating-point arithmetic unit, optimized for general embedded control, sensor data processing and low-power IoT applications
Electrical and Hardware Specifications
Core: Cortex-M4 core with FPU floating-point unit and memory protection unit, maximum working frequency 84 MHz
Memory layout
Flash memory: 128 KB
SRAM: 64 KB
Operating supply voltage: 1.8 V ~ 3.6 V
Operating temperature range: -40 °C to +85 °C
Package: 48-pin UFQFPN compact surface mount package
Total available GPIO pins: 36 configurable general input/output ports
On-Chip Peripherals
Analog modules
One 12-bit analog-to-digital converter with up to 16 external input channels, maximum conversion rate 2.4 MSPS
Built-in precision RTC calendar circuit, supporting backup battery power supply to maintain time data after main power cut-off
Timing peripherals
Ten advanced and general 16-bit timers, capable of generating multi-channel PWM signals for motor drive and pulse control
Two watchdog timers for program runaway monitoring and automatic system reset
Communication interfaces
Four USART serial communication ports, three SPI buses, two I2C buses
One CAN 2.0B bus interface for industrial device networking
USB device full-speed interface for data communication and equipment debugging
I2S audio interface for audio signal receiving and transmitting
Other built-in modules
Multi-channel DMA controller to undertake data transmission tasks independently without occupying core computing resources
True random number generator for data encryption scenarios
CRC calculation unit for data integrity verification
Core Features
The built-in floating-point arithmetic unit accelerates mathematical operations such as filtering, sensor data fusion and algorithm calculation, improving operation efficiency compared with Cortex-M3 chips.
Equipped with adaptive flash memory accelerator, eliminating reading delay of internal program storage and guaranteeing stable execution speed under maximum clock frequency.
Multiple adjustable power working modes including run, sleep, stop and standby modes. Low-power modes effectively reduce power consumption, suitable for battery-powered portable devices.
I/O pins support internal pull-up and pull-down configuration, with basic electrostatic protection to cope with common electromagnetic interference in consumer and light industrial environments.
Internal power supply monitoring circuit provides power-on reset, voltage drop protection, avoiding abnormal program operation caused by unstable input voltage.
Unique 96-bit chip identification code is solidified inside each chip, used for equipment batch management, firmware encryption and anti-counterfeiting.
Compact small package saves printed circuit board layout space, suitable for miniaturized terminal product design.
Escenarios típicos de aplicación
Portable environmental sensor monitoring terminals
Small household appliance intelligent control boards
Bluetooth and wireless communication peripheral main control modules
Handheld portable measuring instruments
Low-speed stepper motor and small actuator control equipment
Consumer electronic wearable auxiliary control circuits
