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Texas Instruments MSP430F5256IRGCT

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MSP430F5256IRGCT Overview

Using an "always-on" ultra-low-power system controller can significantly reduce power consumption on portable devices like handsets and tablets. These controllers can act as sensor hubs and monitor user stimuli (for example, reading inertial sensors or touch sensors) and vital system parameters like battery health and temperature, while power-hungry application processors and touch screen controllers are turned off. The microcontroller can then "wake up" the system based on a user input or on a fault condition that requires CPU intervention.

The MSP430F525x series is the latest addition to the 1.8-V split-rail I/O portfolio (previously only available on MSP430F522x) and is specifically designed for "always-on" system controller applications. 1.8-V I/O allows for seamless interface to application processors and other devices without the need for external level translation, while the primary supply to the MCU can be on a higher voltage rail.

Compared to the MSP430F522x, the MSP430F525x provides up to four times more RAM (32KB) and double the serial interfaces (four USCI_A and four USCI_B). The MSP430F525x also features four 16-bit timers, a high-performance 10-bit ADC, a hardware multiplier, DMA, a comparator, and an RTC module with alarm capabilities. The MSP430F525x consumes 290 μA/MHz (typical) in active mode running from flash memory, and it consumes 1.6 μA (typical) in standby mode (LPM3). The MSP430F525x can switch to active mode in 3.5 μs (typical), which makes it a great fit for "always-on" low-power applications.

Key benefits of the MSP430F525x are as follows:

For complete module descriptions, see the MSP430F5xx and MSP430F6xx Family User’s Guide. For design guidelines, see Designing With MSP430F522x and MSP430F521x Devices.

Features

  • Dual-Supply Voltage Device
    • Primary Supply (AVCC, DVCC)
      • Powered From External Supply:
        3.6 V Down to 1.8 V
      • Up to 18 General-Purpose I/Os With up to 8 External Interrupts
    • Low-Voltage Interface Supply (DVIO)
      • Powered From Separate External Supply: 1.62 V to 1.98 V
      • Up to 35 General-Purpose I/Os With up to 16 External Interrupts
      • Serial Communications
  • Ultra-Low Power Consumption
    • Active Mode (AM):
      All System Clocks Active
      290 μA/MHz at 8 MHz, 3.0 V, Flash Program Execution (Typical)
      150 μA/MHz at 8 MHz, 3.0 V, RAM Program Execution (Typical)
    • Standby Mode (LPM3):
      Real-Time Clock (RTC) With Crystal, Watchdog, and Supply Supervisor Operational, Full RAM Retention, Fast Wakeup:
      2.1 μA at 2.2 V, 2.3 μA at 3.0 V (Typical)
      Low-Power Oscillator (VLO), General-Purpose Counter, Watchdog, and Supply Supervisor Operational, Full RAM Retention, Fast Wakeup:
      1.6 μA at 3.0 V (Typical)
    • Off Mode (LPM4):
      Full RAM Retention, Supply Supervisor Operational, Fast Wakeup:
      1.3 μA at 3.0 V (Typical)
    • Shutdown Mode (LPM4.5):
      0.18 μA at 3.0 V (Typical)
  • Wake up From Standby Mode in 3.5 μs (Typical)
  • 16-Bit RISC Architecture, Extended Memory, up to 25-MHz System Clock
  • Flexible Power-Management System
    • Fully Integrated LDO With Programmable Regulated Core Supply Voltage
    • Supply Voltage Supervision, Monitoring, and Brownout
  • Unified Clock System
    • FLL Control Loop for Frequency Stabilization
    • Low-Power Low-Frequency Internal Clock Source (VLO)
    • Low-Frequency Trimmed Internal Reference Source (REFO)
    • 32-kHz Watch Crystals (XT1)
    • HF Crystals up to 32 MHz (XT2)
  • 16-Bit Timer TA0, Timer_A With Five Capture/Compare Registers
  • 16-Bit Timer TA1, Timer_A With Three Capture/Compare Registers
  • 16-Bit Timer TA2, Timer_A With Three Capture/Compare Registers
  • 16-Bit Timer TB0, Timer_B With Seven Capture/Compare Shadow Registers
  • Four Universal Serial Communication Interfaces
    • USCI_A0, A1, A2, A3 Each Support:
      • Enhanced UART With Automatic Baud-Rate Detection
      • IrDA Encoder and Decoder
      • Synchronous SPI
    • USCI_B0, B1, B2, B3 Each Support:
      • I2C
      • Synchronous SPI
  • 10-Bit Analog-to-Digital Converter (ADC) With Internal Reference, Sample-and-Hold
  • Comparator
  • Hardware Multiplier Supports 32-Bit Operations
  • Serial Onboard Programming, No External Programming Voltage Needed
  • 3-Channel Internal DMA
  • Basic Timer With RTC Feature
  • Device Comparison Summarizes the Available Family Members and Packages

Applications

MSP430F5xx

Product Parameter

  • Core Processor CPUXV2

  • Speed 25MHz

  • Operating Temperature -40℃ ~ 85℃ (TA)

  • Program Memory Type FLASH

  • RAM Size 16K x 8

  • Number of I/O 53

  • Peripherals Brown-out Detect/Reset, DMA, POR, PWM, WDT

  • Mounting Type Surface Mount

  • Oscillator Type Internal

  • Supplier Device Package 64-VQFN (9x9)

  • Package / Case 64-VFQFN Exposed Pad

  • Core Size 16-Bit

  • Connectivity I2C, IrDA, SCI, SPI, UART/USART

  • Program Memory Size 128KB (128K x 8)

  • Voltage - Supply (Vcc/Vdd) 1.8V ~ 3.6V

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