Especificaciones
Fabricante: STMicroelectronics
Device Type: High-performance Cortex-M4 microcontroller dedicated to digital power conversion, motor control and high-precision analog signal processing applications
Electrical and Hardware Parameters
Core unit: ARM Cortex-M4 core with built-in hardware floating-point unit and memory protection unit, maximum operating frequency 170 MHz
Memory configuration
Flash storage: 512 KB
SRAM capacity: 152 KB
Operating supply voltage: 1.7 V to 3.6 V
Operating temperature range: -40 °C to +125 °C
Package type: 100-pin LQFP surface mount package, 81 configurable general-purpose I/O pins
On-chip Peripheral Resources
Analog functional modules
Four independent 12-bit ADCs with up to 34 sampling channels, maximum conversion rate 4 MSPS
Two high-speed 12-bit DAC channels for analog reference voltage output
Three integrated operational amplifiers and two high-speed voltage comparators
Built-in precision RTC clock circuit supporting backup battery power supply
Motor & power control dedicated peripherals
Advanced high-resolution timer unit capable of generating PWM signals with sub-nanosecond tuning accuracy
Multiple standard 16-bit timers, encoder interface for position feedback acquisition
Two watchdog timers for system abnormal operation monitoring
Communication interfaces
Six USART serial ports, four SPI buses, three I2C interfaces
Two CAN FD controllers for high-speed industrial bus communication
USB full-speed interface, SAI audio bus, FDCAN communication modules
Other built-in modules
Multi-channel DMA controller for autonomous data transmission
Hardware CRC arithmetic unit, true random number generator
Flexible external memory expansion interface
Core Functional Features
Optimized architecture oriented to switching power supply and servo drive scenarios. High-resolution timer can realize ultra-fine PWM duty cycle adjustment, effectively lowering switching harmonic noise and improving power conversion efficiency.
The combination of abundant on-chip op-amps, comparators, ADC and DAC eliminates numerous external analog chips, simplifies circuit layout and reduces overall device volume and material costs.
Multi-level adjustable power management modes balance high-speed computing performance and low standby power consumption, adaptable to both continuous operation industrial equipment and battery-powered portable testing devices.
All I/O pins are equipped with robust ESD protection, strong immunity to switching electromagnetic interference inside power equipment, and stable operation under wide temperature variation conditions.
Internal power monitoring system includes power-on reset, brown-out protection and power failure detection, avoiding program crash triggered by unstable input voltage.
Each chip carries exclusive 96-bit unique ID, supporting firmware encryption, product batch management and anti-counterfeiting development.
Escenarios típicos de aplicación
Digital switching power supplies, battery chargers and UPS control boards
BLDC brushless motor, servo motor closed-loop drive controllers
Solar power converter and energy storage management modules
Industrial high-precision signal acquisition and testing instruments
HVAC equipment variable frequency drive control units
Medical portable analytical device main control circuits
