MSP430F5437AIPNR Texas Instruments

MSP430F543xA, MSP430F541xA Mixed-Signal Microcontrollers
1 Features
• Low supply voltage range:
3.6 V down to 1.8 V
• Ultra-low power consumption
– Active mode (AM):
all system clocks active
230 μA/MHz at 8 MHz, 3.0 V, flash program
execution (typical)
110 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:
1.7 μA at 2.2 V, 2.1 μA at 3.0 V (typical)
low-power oscillator (VLO), general-purpose
counter, watchdog, and supply supervisor
operational, full RAM retention, fast wakeup:
1.2 μA at 3.0 V (typical)
– Off mode (LPM4):
full RAM retention, supply supervisor
operational, fast wakeup:
1.2 μA at 3.0 V (typical)
– Shutdown mode (LPM4.5):
0.1 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 crystals
– High-frequency crystals up to 32 MHz
• 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 TB0, Timer_B with seven capture/
compare shadow registers
• Up to four universal serial communication
interfaces (USCIs)
– USCI_A0, USCI_A1, USCI_A2, and USCI_A3
each support:
• Enhanced UART supports automatic baud-
rate detection
• IrDA encoder and decoder
• Synchronous SPI
– USCI_B0, USCI_B1, USCI_B2, and USCI_B3
each support:
• I2C
• Synchronous SPI
• 12-bit analog-to-digital converter (ADC)
– Internal reference
– Sample-and-hold
– Autoscan feature
– 14 external channels, 2 internal channels
• 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
2 Applications
• Analog and Digital Sensor Systems
• Digital Motor Controls
• Remote Controls
• Thermostats
• Digital Timers
• Hand-Held Meters

3 Description 

The LMR14030-Q1 is a 40 V, 3.5 A step down regulator with an integrated high-side MOSFET. With a wide input range from 4 V to 40 V, it’s suitable for various applications from industrial to automotive for power conditioning from unregulated sources. An extended family is available in 2 A and 5 A options in pin-to-pin compatible packages, including LMR14020- Q1 and LMR14050-Q1. The regulator’s quiescent current is 40 µA in Sleep-mode, which is suitable for battery powered systems. An ultra-low 1 μA current in shutdown mode can further prolong battery life. A wide adjustable switching frequency range allows either efficiency or external component size to be optimized. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components of the device. A precision enable input allows simplification of regulator control and system power sequencing. The device also has built-in protection features such as cycle-by-cycle current limit, thermal sensing and shutdown due to excessive power dissipation, and output overvoltage protection. The LMR14030-Q1 is available in an 8-pin HSOIC or 10-pin WSON package with exposed pad for low thermal resistance.