MSP430F5304IRGZR

The MSP430F5304IRGZR is a member of Texas Instruments’ MSP430F5xx family of ultra-low-power mixed-signal microcontrollers, renowned for their industry-leading power efficiency and flexible peripheral integration. The part number breaks down as follows: ‘MSP430’ denotes the MSP430 16-bit MCU series, ‘F530’ indicates the F530x subfamily with integrated 3.3V LDO and ADC10, ‘4’ specifies the memory configuration (8KB Flash, 6KB RAM), ‘I’ indicates industrial temperature range (-40°C to +85°C), ‘RGZ’ is the 48-pin VQFN package designator, and ‘R’ denotes tape-and-reel packaging. At the heart of the MSP430F5304 is the CPUXV2 core, a 16-bit RISC processor with 27 instructions and 16 registers, running at speeds up to 25MHz. The architecture is optimized for maximum code efficiency, with constant generators and a von Neumann memory architecture that allows uniform access to all memory, peripherals, and registers. The MCU features 8KB of in-system programmable Flash memory and 6KB of RAM. A built-in 3.3V LDO regulator simplifies power supply design, generating the internal core voltage from a single 1.8V-3.6V supply. A standout feature is the 10-bit SAR ADC with up to 6 input channels, capable of sampling at rates up to 200ksps. The ADC supports multiple reference sources and includes an internal temperature sensor. System peripherals include four 16-bit timers (Timer_A and Timer_B), a 3-channel DMA controller, and a hardware multiplier supporting 16×16 and 32-bit operations. Serial communication is handled by the Universal Serial Communication Interface (USCI), which can be configured for UART, SPI, or I²C operation. The MSP430F5304 includes one USCI module in the 48-pin package. The integrated RTC module provides real-time clock functionality with alarm features, independent of the main CPU. True to the MSP430 legacy, the F5304 offers five low-power modes (LPM0 through LPM4.5) with standby currents as low as 1.9µA in LPM3 (RTC active) and just 0.18µA in LPM4.5 shutdown mode. The digitally controlled oscillator (DCO) allows wake-up from any low-power mode to active mode in less than 5µs, enabling duty-cycled applications to maximize battery life.

The MSP430F5304IRGZR operates as a complete mixed-signal microcontroller system with the following architecture: 1) CPU Core (MSP430 CPUXV2): A 16-bit RISC processor with 27 core instructions, 16 registers, and constant generators. The core uses a von Neumann architecture where all memory and peripherals share a common address space. It supports 16-bit and 20-bit addressing modes for extended memory access. 2) Unified Clock System (UCS): Generates all system clocks from multiple sources: – LFXT1: Low-frequency 32kHz crystal (for ACLK, RTC) – XT2: High-frequency crystal up to 32MHz (for MCLK/SMCLK) – DCO: Digitally controlled oscillator with FLL for frequency stabilization – VLO: Very low power internal oscillator (~10kHz) – REFO: Trimmed internal reference (~32.768kHz) Three main clocks are distributed: MCLK (CPU clock, up to 25MHz), SMCLK (peripheral clock), and ACLK (auxiliary/real-time clock, ~32kHz). 3) Power Management Module (PMM): Includes an integrated LDO that generates the core supply voltage from the I/O supply. Features supply voltage supervisor (SVM) and supply voltage supervisor (SVS) for brownout detection and power-fail reset. Supports programmable core voltage levels for power optimization. 4) Memory System: – 8KB Flash: In-system programmable, used for code and data storage – 6KB RAM: Static RAM for data and stack – Information memory: Smaller Flash segments for non-volatile data storage 5) 10-bit SAR ADC: A successive approximation analog-to-digital converter with up to 6 input channels. Features include selectable reference voltages, auto-sequencing, and conversion results transferable via DMA. Includes an internal temperature sensor. 6) Timer Peripherals: – Timer_A0: 16-bit timer with 5 capture/compare registers (PWM capable) – Timer_A1: 16-bit timer with 3 capture/compare registers – Timer_A2: 16-bit timer with 3 capture/compare registers – Timer_B0: 16-bit timer with 7 capture/compare shadow registers 7) Universal Serial Communication Interface (USCI): One USCI module supporting multiple protocols: – UART mode with auto baud rate detection – SPI mode (master/slave) – I²C mode (multi-master capable) 8) DMA Controller: 3-channel DMA that can transfer data between peripherals and memory without CPU intervention, reducing power consumption by allowing the CPU to remain in low-power modes. 9) Hardware Multiplier: A 16×16-bit multiplier peripheral supporting unsigned, signed, and multiply-accumulate operations. Can also perform 32-bit operations, useful for DSP-like math. 10) RTC_B: Real-time clock module with calendar mode (seconds through years), alarm functionality, and calendar comparison registers. 11) I/O Ports: Up to 31 GPIO pins with interrupt capability on Port 1 and Port 2. A port mapping controller allows flexible assignment of peripheral functions to I/O pins. 12) Debug Interface: JTAG and Spy-Bi-Wire (2-wire JTAG) interfaces for programming and on-chip debugging.

VQFN-48 (RGZ) package, 7.0 × 7.0 × 0.95 mm. Exposed thermal pad must be soldered to ground.

• Portable and battery-powered measurement instruments
• Smart energy, water, and gas metering
• Wireless sensor network end nodes
• Industrial sensor interfaces and data loggers
• Medical wearables and diagnostic devices
• Building automation sensors and controllers
• Consumer electronics with long battery life requirements
• HVAC monitoring and control systems