El MSP430F5324IRGCR de Texas Instruments es una MCU MSP430 de 16 bits y consumo ultrabajo en un encapsulado VQFN de 64 patillas (9\u00d79 mm). Sus principales caracter\u00edsticas son: CPU de 25 MHz, Flash de 64 KB, SRAM de 6 KB, ADC SAR de 12 bits (10 canales), 8 comparadores, multiplicador por hardware (32 bits), DMA de 3 canales, 2 m\u00f3dulos USCI (cada uno compatible con UART\/SPI e I2C), 4 temporizadores de 16 bits (Timer_A \u00d73, Timer_B \u00d71), 47 GPIO y RTC con alarma. La tensi\u00f3n de funcionamiento es de 1,8 V a 3,6 V. Consumo: 290 \u00b5A\/MHz en activo (Flash), 1,9 \u00b5A en espera (LPM3 con RTC), 0,18 \u00b5A en apagado (LPM4.5), con un despertar de 3,5 \u00b5s desde el modo de espera. Rango de temperatura industrial de -40\u00b0C a +85\u00b0C.<\/p>","protected":false},"excerpt":{"rendered":"
The MSP430F5324IRGCR from Texas Instruments is a 16-bit ultra-low-power MSP430 MCU in a 64-pin VQFN (9\u00d79 mm) package. Key specs include 25-MHz CPU, 64-KB Flash, 6-KB SRAM, 12-bit SAR ADC (10 channels), 8 comparators, hardware multiplier (32-bit), 3-channel DMA, 2 USCI modules (each supporting UART\/SPI and I2C), 4 16-bit timers (Timer_A \u00d73, Timer_B \u00d71), 47 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[14,13],"tags":[],"chip_brand":[138],"class_list":["post-2044","post","type-post","status-publish","format-standard","hentry","category-clock-timing-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"16-bit MSP430, 64KB Flash, 6KB SRAM, 12-bit ADC, 0.18\u00b5A LPM4.5, 3.5\u00b5s wake-up, VQFN-64, 1.8-3.6V","date_code":"","package_case":"VQFN-64 (RGC) (9.0 x 9.0 x 0.95 mm, 0.5mm pitch, exposed pad)","in_stock":4000,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/msp430f5324.pdf","price":"$3.40 (1K+ pcs)","product_introduction":"The MSP430F5324 is a member of TI's MSP430F532x family of ultra-low-power 16-bit mixed-signal microcontrollers. The '5324' variant provides 64-KB Flash, 6-KB SRAM, and 47 I\/O pins in a 64-pin VQFN package, positioned as a mid-range device between the smaller 28-pin and larger 80-pin family members.\n\nThe MSP430 architecture is optimized for low-power operation through a combination of flexible clock management, multiple low-power modes, and an integrated LDO. The unified clock system includes a digitally controlled oscillator (DCO) for fast wake-up (3.5 \u00b5s from standby), a FLL for frequency stabilization, a 32-kHz crystal oscillator (XT1) for RTC, and a high-frequency crystal oscillator (XT2) up to 32 MHz. The on-chip LDO regulates the core supply, allowing the device to run from a single 1.8-V to 3.6-V supply.\n\nThe five low-power modes are the hallmark of the MSP430. Active mode draws 290 \u00b5A\/MHz from Flash (150 \u00b5A\/MHz from RAM). LPM3 (standby with RTC, WDT, and supply supervisor active) draws only 1.9 \u00b5A at 2.2 V. LPM4 (off mode with RAM retention and supply supervisor) draws 1.1 \u00b5A. LPM4.5 (shutdown with no RAM retention) draws just 0.18 \u00b5A \u2014 approaching the self-discharge rate of a coin cell battery.\n\nThe two USCI modules each support dual-protocol operation: USCI_A provides UART (with auto-baud detection) and SPI, while USCI_B provides I2C and SPI. This allows simultaneous UART + I2C, or SPI + I2C, or any combination. The 12-bit ADC includes an internal reference, sample-and-hold, and auto-scan for sequential channel sampling without CPU intervention.\n\nThe hardware multiplier supports 32-bit operations (32\u00d732 \u2192 64-bit result) in a single instruction cycle, accelerating DSP-like algorithms. The 3-channel DMA offloads memory transfers from the CPU, enabling ADC-to-RAM or UART-to-RAM transfers with zero CPU overhead.\n\nTypical applications include battery-powered data loggers, wireless sensor nodes, portable medical instruments, and smart metering systems where ultra-low quiescent current and fast wake-up are essential for extending battery life.","working_principle":"**MSP430 CPU Core:** The MSP430 uses a 16-bit RISC architecture with 16-bit registers and a constant generator for efficient instruction encoding. The 27 core instructions handle most operations; additional emulated instructions provide convenience. The Von Neumann architecture uses a single address space for Flash, SRAM, and peripherals. The CPU runs at up to 25 MHz with single-cycle register-to-register operations.\n\n**Unified Clock System (UCS):** The UCS manages four clock sources: XT1 (32-kHz crystal), XT2 (high-frequency crystal up to 32 MHz), DCO (digitally controlled oscillator, fast start), and VLO (low-frequency internal, 10 kHz typical). The FLL multiplies the 32-kHz reference to generate a stable MCLK and SMCLK. The DCO starts in microseconds, enabling the 3.5-\u00b5s wake-up from LPM3.\n\n**Low-Power Modes:** Five low-power modes trade off functionality vs. power. LPM0 keeps SMCLK running (timer-based events). LPM3 keeps only ACLK (32 kHz) and RTC active (periodic wake-up). LPM4 disables all clocks but retains SRAM (interrupt wake-up). LPM4.5 disables the LDO entirely, losing SRAM content but achieving 0.18 \u00b5A (reset wakeup). The key design principle: spend most time in deep sleep, wake briefly to take measurements, then return to sleep.\n\n**USCI Communication:** Each USCI module uses a shared shift register with separate baud-rate generators for UART and I2C\/SPI modes. Switching between protocols requires reconfiguration but not a hardware change. The UART supports auto-baud detection for unknown baud rates. I2C supports master\/slave with multi-master arbitration and clock stretching.","pin_description":"
| Pin Group<\/th> | Count<\/th> | Key Functions<\/th> | Notes<\/th><\/tr><\/thead> | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Power (DVCC\/DVSS)<\/td> | 4 pairs<\/td> | 1.8-3.6V digital supply; AVCC\/AVSS for analog<\/td> | Bypass each DVCC with 0.1\u00b5F ceramic; AVCC powers ADC and comparators<\/td><\/tr> | ||||||||||||||||||||||||||||
| PORT1 (P1.0-P1.7)<\/td> | 8<\/td> | GPIO with interrupt; TA0 CCR0-4; ADC A0-A7; comparator inputs; TMS\/TCK (JTAG)<\/td> | P1.0 can output ACLK; P1.2\/P1.3 are USCI_B0 I2C default pins<\/td><\/tr> | ||||||||||||||||||||||||||||
| PORT2 (P2.0-P2.7)<\/td> | 8<\/td> | GPIO with interrupt; TA1 CCR0-2; ADC A8-A9; comparator outputs; TDI\/TDO (JTAG)<\/td> | P2.0 can output SMCLK; P2.4\/P2.5 are USCI_A0 UART default<\/td><\/tr> | ||||||||||||||||||||||||||||
| PORT3 (P3.0-P3.7)<\/td> | 8<\/td> | TA0 outputs; USCI_A0 SPI (UCA0CLK\/SIMO\/SOMI); USCI_B0 SPI<\/td> | Port 3 handles most SPI pin assignments for both USCI modules<\/td><\/tr> | ||||||||||||||||||||||||||||
| PORT4 (P4.0-P4.7)<\/td> | 8<\/td> | TA2 CCR0-2; TB0 outputs; XT1 crystal pins; ADC A10-A12<\/td> | P4.0\/P4.1 are XT1 IN\/OUT (32kHz crystal); P4.2-P4.4 are TB0 outputs<\/td><\/tr> | ||||||||||||||||||||||||||||
| PORT5-11<\/td> | 15<\/td> | USCI_A1 (UART\/SPI); USCI_B1 (I2C\/SPI); XT2 crystal; additional ADC; DMA control<\/td> | Provides second USCI port pins; XT2 on P5.2\/P5.3 for high-freq crystal<\/td><\/tr> | ||||||||||||||||||||||||||||
| RST\/NMI<\/td> | 1<\/td> | Reset \/ non-maskable interrupt; active low; internal pull-up<\/td> | External pull-up and decoupling cap recommended for clean reset<\/td><\/tr><\/tbody><\/table>","application_scenarios":"
|