MM32F3273G7P
Cortex-M3 MCU with 256KB Flash, 48KB RAM, USB, and rich peripherals for industrial applications
Product Overview
Description
The MM32F3273G7P is a high-performance mainstream microcontroller featuring ARM Cortex-M3 core running at up to 120MHz. It provides an optimal balance of performance, power efficiency, and peripheral integration for demanding embedded applications.
This MCU includes 256KB Flash memory and 48KB SRAM, providing ample storage for complex applications. The rich peripheral set includes USB 2.0 OTG, multiple UART/SPI/I2C interfaces, CAN 2.0B, and advanced analog peripherals including 12-bit ADC and DAC.
The device operates from 2.0V to 3.6V supply voltage and supports industrial temperature range from -40°C to +85°C. Security features include hardware encryption engine and read/write protection for code security.
Product Series
MM
Primary Application
Industrial control systems
Key Features
- ARM Cortex-M3 up to 120MHz
- 256KB Flash with read protection
- 48KB SRAM
- USB 2.0 OTG full-speed
- CAN 2.0B interface
- 12-bit ADC with 16 channels
- 12-bit DAC
- Hardware encryption engine
Specifications
| Core | ARM Cortex-M3 |
|---|---|
| Frequency | 120 MHz |
| Flash | 256 KB |
| RAM | 48 KB |
| GPIO | Up to 80 |
| ADC | 12-bit, 16 channels, 1Msps |
| Package | LQFP-64 |
Applications
Industrial control systems
Industrial automation and control
Human-machine interfaces
Communication and interface
Medical equipment
Medical electronics
Test and measurement
Data acquisition and conversion
Building automation
Industrial automation and control
FAE Expert Insights
"The MM32F3273G7P is an excellent choice for industrial control applications requiring a balance of performance and cost. In my experience, this MCU's 120MHz Cortex-M3 core handles most industrial control algorithms efficiently while maintaining reasonable power consumption. The integrated USB and CAN interfaces are particularly valuable for industrial networking applications. I recommend this part for PLC controllers, industrial gateways, and HMI devices. The hardware encryption engine is a nice addition for applications requiring secure firmware updates. One consideration is that for applications requiring floating-point operations, consider the MM32F5270 series with Cortex-M4F instead. Overall, this is a solid workhorse MCU for general industrial applications."
Versatile Cortex-M3 MCU with excellent peripheral integration for industrial applications
— Michael Chen, BeiLuo
Frequently Asked Questions
What is the maximum clock frequency of MM32F3273G7P?
The MM32F3273G7P operates at a maximum CPU frequency of 120MHz. This frequency provides excellent performance for most embedded control applications while maintaining reasonable power consumption. The MCU includes a flexible clock system with internal RC oscillators (8MHz and 40kHz) and support for external crystal oscillators (4-24MHz). The PLL can multiply the input clock to achieve the maximum 120MHz system clock. At this frequency, the Cortex-M3 core can execute most instructions in a single cycle, providing approximately 120 DMIPS of processing power. For applications requiring higher performance, consider the MM32F5270 series with 168MHz Cortex-M4F.
For higher performance requirements, consider MM32F5270 series. Contact LiTong for performance analysis.
How much Flash and SRAM does MM32F3273G7P have?
The MM32F3273G7P includes 256KB of Flash memory and 48KB of SRAM. The Flash memory is organized in sectors and supports in-application programming (IAP) and in-system programming (ISP). Read protection is available to prevent unauthorized code extraction. The 48KB SRAM provides ample space for stack, heap, and data storage during program execution. Memory wait states are automatically managed based on system frequency to ensure reliable operation. For applications requiring more memory, the MM32F3270 family offers variants with up to 512KB Flash and 96KB SRAM. LiTong can help select the optimal memory configuration for your application.
For larger memory requirements, consider other MM32F3270 variants. Contact LiTong for selection guidance.
Does MM32F3273G7P support USB device and host modes?
Yes, the MM32F3273G7P includes a USB 2.0 OTG (On-The-Go) controller that supports both device and host modes. In device mode, it can function as various USB device classes including CDC (virtual COM port), HID (keyboard/mouse), MSC (mass storage), and custom devices. In host mode, it can communicate with USB devices such as flash drives, keyboards, and other peripherals. The USB peripheral operates at full-speed (12Mbps) and includes a dedicated 1.25KB endpoint buffer memory. The integrated USB PHY eliminates the need for external transceiver components. Software support includes USB device and host libraries in the MindMotion SDK. LiTong provides USB application examples and technical support.
Contact LiTong for USB application development support and example code.
What communication interfaces are available on MM32F3273G7P?
The MM32F3273G7P provides comprehensive communication interfaces: (1) Up to 3 USARTs supporting synchronous and asynchronous communication, IrDA, and LIN. (2) Up to 2 SPI interfaces supporting master and slave modes with speeds up to 18Mbps. (3) Up to 2 I2C interfaces with standard and fast mode support. (4) One CAN 2.0B interface supporting standard and extended identifiers with bit rates up to 1Mbps. (5) USB 2.0 OTG full-speed interface. (6) SDIO interface for SD/MMC card connection. These interfaces enable connectivity with a wide range of peripherals, sensors, and communication networks. All interfaces include DMA support for efficient data transfer without CPU intervention. LiTong can provide guidance on interface selection and configuration.
Contact LiTong for communication interface selection and application guidance.
What is the operating temperature range of MM32F3273G7P?
The MM32F3273G7P supports industrial temperature range from -40°C to +85°C as standard. This temperature range is suitable for most industrial, commercial, and consumer applications. For applications requiring extended temperature range, some MM32F variants are available in -40°C to +105°C or -40°C to +125°C grades (check specific part numbers). The MCU includes a temperature sensor internally connected to the ADC for monitoring die temperature. Proper thermal design including adequate PCB copper area and appropriate package selection ensures reliable operation across the specified temperature range. Automotive-grade variants with AEC-Q100 qualification are also available for automotive applications.
For extended temperature or automotive requirements, contact LiTong for suitable variant recommendations.