1 Features
• Embedded microcontroller
– 16-bit RISC architecture up to 16 MHz
– Wide supply voltage range from 3.6 V down to
1.8 V (minimum supply voltage is restricted by
SVS levels, see the Section 8.12.1.1)
• Optimized low-power modes (at 3 V)
– Active mode: 126 μA/MHz
– Standby mode: <1 μA with real-time clock
(RTC) counter and liquid crystal display (LCD)
– Shutdown (LPM4.5): 15 nA
• High-performance analog
– 10-channel 10-bit analog-to-digital converter
(ADC)
• Internal 1.5-V reference
• Sample-and-hold 200 ksps
– Low-power LCD driver
• Supports up to 4×36- or 8×32-segment LCD
configuration
• On-chip charge pump to keep LCD active in
standby mode (LPM3.5)
• Each LCD pin software configurable as SEG
or COM
• Contrast control from 2.6 V to 3.5 V by
0.06‑V steps
• Low-power ferroelectric RAM (FRAM)
– Up to 15.5KB of nonvolatile memory
– Built-in error correction code (ECC)
– Configurable write protection
– Unified memory of program, constants, and
storage
– 1015 write cycle endurance
– Radiation resistant and nonmagnetic
• Intelligent digital peripherals
– IR modulation logic
– Two 16-bit timers with three capture/compare
registers each (Timer_A3)
– One 16-bit counter-only RTC counter
– 16-bit cyclic redundancy checker (CRC)
• Enhanced serial communications
– Enhanced USCI A (eUSCI_A) supports UART,
IrDA, and SPI
– Enhanced USCI B (eUSCI_B) supports SPI and
I2C
• Clock system (CS)
– On-chip 32-kHz RC oscillator (REFO)
– On-chip 16-MHz digitally controlled oscillator
(DCO) with frequency-locked loop (FLL)
• ±1% accuracy with on-chip reference at
room temperature
– On-chip very low-frequency 10-kHz oscillator
(VLO)
– On-chip high-frequency modulation oscillator
clock (MODCLK)
– External 32-kHz crystal oscillator (XT1)
– Programmable MCLK prescalar of 1 to 128
– SMCLK derived from MCLK with programmable
prescalar of 1, 2, 4, or 8
• General input/output and pin functionality
– 60 I/Os on 64-pin package
– 16 interrupt pins (P1 and P2) can wake MCU
from LPMs
– All I/Os are capacitive touch I/O
• Development tools and software
– Development kits (MSP-EXP430FR4133
LaunchPad™ development kit and
MSP‑TS430PM64D target development board)
– Free software (MSP430Ware™ software)
• Family members (also see Section 6)
– MSP430FR4133: 15KB of program FRAM +
512B of information FRAM + 2KB of RAM
– MSP430FR4132: 8KB of program FRAM +
512B of information FRAM + 1KB of RAM
– MSP430FR4131: 4KB of program FRAM +
512B of information FRAM + 512B of RAM
• Package options
– 64 pin: LQFP (PM)
– 56 pin: TSSOP (G56)
– 48 pin: TSSOP (G48)

2 Applications
• Remote controls
• Thermostats
• Water meters
• Heat meters
• Gas meters
• One-time password tokens
• Blood glucose monitors
• Blood pressure monitors

3 Description
MSP430FR41xx ultra-low-power (ULP) microcontroller family supports low-cost LCD applications that benefit
from an integrated 10-bit ADC such as remote controls, thermostats, smart meters, blood glucose monitors,
and blood pressure monitors. The MCUs feature a powerful 16-bit RISC CPU, 16-bit registers, and constant
generators that contribute to maximum code efficiency. The digitally controlled oscillator (DCO) allows the device
to wake up from low-power modes to active mode in less than 10 μs. The architecture, combined with extensive
low-power modes, is optimized to achieve extended battery life in portable measurement applications.
The MSP430™ FRAM microcontroller platform combines uniquely embedded ferroelectric random access
memory (FRAM) and a holistic ultra-low-power system architecture, allowing system designers to increase
performance while lowering energy consumption. FRAM technology combines the low-energy fast writes,
flexibility, and endurance of RAM with the nonvolatile behavior of flash.
MSP430FR41x MCUs are supported by an extensive hardware and software ecosystem with reference designs
and code examples to get your design started quickly. Development kits for the MSP430FR41xx include the
MSP-EXP430FR4133 LaunchPad™ development kit and the MSP-TS430PM64D 64-pin target development
board. TI also provides free MSP430Ware™ software, which is available as a component of Code Composer
Studio™ IDE desktop and cloud versions within TI Resource Explorer. MSP430 MCUs are also supported
by extensive online collateral, such as our housekeeping example series, MSP Academy training, and online
support through the TI E2E™ support forums.
For complete module descriptions, see the MSP430FR4xx and MSP430FR2xx Family User's Guide.