Overview
The MSP430FR2311 is a 16-bit ultra-low-power microcontroller from Texas Instruments, part of the MSP430FR2xx family. This MCU integrates advanced features such as low-leakage transimpedance amplifiers, general-purpose operational amplifiers, and high-performance analog peripherals. It is designed to optimize power consumption, making it suitable for battery-powered and wireless sensing applications. The device features a powerful 16-bit RISC CPU, low-power modes, and a range of peripherals that enhance its functionality in various sensing and measurement applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Processor | 16-bit RISC architecture, up to 16 MHz |
| Supply Voltage | 1.8 V to 3.6 V |
| Active Power Consumption | 126 µA/MHz |
| Standby Power Consumption | 1 µA (LPM3 with RTC) |
| Shutdown Power Consumption | 32 nA (LPM4.5 without SVS) |
| Nonvolatile Memory | Up to 3.75 KB FRAM |
| RAM | 1 KB |
| Analog-to-Digital Converter (ADC) | 8-channel, 10-bit, 200 ksps |
| Operational Amplifier | General-purpose, rail-to-rail input and output |
| Transimpedance Amplifier (TIA) | Configurable, low-leakage |
| Timers | Two 16-bit timers, one 16-bit RTC counter |
| Serial Communication | eUSCI_A (UART, IrDA, SPI), eUSCI_B (SPI, I2C) |
| GPIO Pins | 16 I/Os, capacitive touch I/Os |
| Operating Temperature Range | -40°C to 85°C |
| Package Options | 20-pin TSSOP, 16-pin TSSOP, 16-pin VQFN |
Key Features
- Ultra-Low Power Modes: Active mode: 126 µA/MHz, Standby: 1 µA, Shutdown: 32 nA without SVS.
- High-Performance Analog Peripherals: 8-channel 10-bit ADC, general-purpose operational amplifier, transimpedance amplifier.
- Low-Power Ferroelectric RAM (FRAM): Up to 3.75 KB of nonvolatile memory with built-in error correction code (ECC) and configurable write protection.
- Intelligent Digital Peripherals: IR modulation logic, two 16-bit timers, one 16-bit RTC counter, 16-bit cyclic redundancy checker (CRC).
- Enhanced Serial Communications: eUSCI_A supports UART, IrDA, and SPI; eUSCI_B supports SPI and I2C.
- Clock System: On-chip 32-kHz RC oscillator, 16-MHz digitally controlled oscillator (DCO), external 32-kHz crystal oscillator, and external high-frequency crystal oscillator.
- General Input/Output and Pin Functionality: 16 I/Os, capacitive touch I/Os, and interrupt pins to wake the MCU from low-power modes.
Applications
The MSP430FR2311 MCU is well-suited for a variety of applications that require low power consumption and advanced analog capabilities. These include:
- Sensing and Measurement: Smoke detectors, gas detectors, and other environmental sensing devices.
- Portable Health and Fitness Accessories: Wearable devices, fitness trackers, and health monitors.
- Industrial Automation: Low-power industrial control systems and monitoring devices.
- Consumer Electronics: Battery-powered consumer devices requiring low power and advanced analog features.
- Wireless Sensing Applications: Devices that require extended battery life and reliable data acquisition.
Q & A
- What is the maximum clock speed of the MSP430FR2311 MCU?
The maximum clock speed is up to 16 MHz.
- What is the power consumption in active mode?
The active power consumption is 126 µA/MHz.
- What types of memory does the MSP430FR2311 MCU have?
The MCU has up to 3.75 KB of nonvolatile FRAM and 1 KB of SRAM.
- What are the key analog peripherals of the MSP430FR2311?
The key analog peripherals include an 8-channel 10-bit ADC, a general-purpose operational amplifier, and a transimpedance amplifier.
- What are the low-power modes available on the MSP430FR2311?
The MCU features several low-power modes including active mode, standby (LPM3), and shutdown (LPM4.5).
- What is the operating temperature range of the MSP430FR2311?
The operating temperature range is -40°C to 85°C.
- What development tools are available for the MSP430FR2311?
Development tools include the MSP-EXP430FR2311 LaunchPad development kit and the MSP-TS430PW20 target development board.
- What is the purpose of the transimpedance amplifier in the MSP430FR2311?
The transimpedance amplifier is used for current-to-voltage conversion and features low-leakage and rail-to-rail output.
- How many GPIO pins does the MSP430FR2311 have?
The MCU has 16 GPIO pins, which are also capacitive touch I/Os.
- What serial communication interfaces are supported by the MSP430FR2311?
The MCU supports UART, IrDA, SPI, and I2C through its eUSCI_A and eUSCI_B modules.
