Texas Instruments MSP430FG4618IPZ

Overview

MSP430FG4618IPZ from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 116KB+256B flash, 8KB RAM, a 12-bit ADC with 12 channels, dual 12-bit DACs, three configurable op-amps, integrated LCD driver (160 segments), and dual 16-bit timers (Timer_A3 and Timer_B7) - deployed in portable medical devices and electronic metering systems.

For engineers reviewing the MSP430FG4618IPZ datasheet, MSP430FG4618IPZ pinout, MSP430FG4618IPZ application, or MSP430FG4618IPZ equivalent, key selection considerations include flash/RAM capacity, LCD segment count, analog peripheral integration (ADC/DAC/op-amps), low-power mode wake-up time (<6 µs from LPM3), and 100-pin LQFP package compatibility with industrial PCB layouts.

Technical Context

The MSP430FG4618IPZ implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO), enabling sub-6-µs wake-up from standby (LPM3). Its analog subsystem integrates a 12-bit SAR ADC with internal reference and autoscan, two synchronized 12-bit DACs, and three rail-to-rail op-amps configurable as amplifiers, comparators, or filters.

Digital connectivity includes USCI_A0 (UART/IrDA/SPI), USCI_B0 (SPI/I²C), and USART1 (UART/SPI), while timing is managed by Timer_A3 (3 capture/compare registers) and Timer_B7 (7 shadowed capture/compare registers), supporting PWM, capture, and real-time clock functions via the Basic Timer module.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PZ), 14 mm × 14 mm body size, standard JEDEC footprint compatible with automated assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar mixed-signal microcontroller applications.

Compared with MSP430FG4619IPZ, the MSP430FG4618IPZ offers 4KB more RAM for data buffering at the expense of 4KB flash - ideal for applications requiring extended analog sample storage over firmware complexity; versus MSP430FG4617IPZ, it adds 24KB flash for enhanced security or feature sets without sacrificing RAM headroom.

Availability

MSP430FG4618IPZ is available at Aetrix Electronics and suitable for portable medical devices, electronic meters, and industrial sensor nodes requiring stable component supply, long-term lifecycle support, and qualified automotive/industrial temperature grade availability.

Supply support for MSP430FG4618IPZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with decades of ultra-low-power MCU innovation.

The MSP430FG461x product line was designed for battery-operated measurement applications demanding integrated analog precision, LCD support, and multi-year energy efficiency - targeting medical, utility, and portable instrumentation markets.

FAQ

What is the maximum operating frequency of the MSP430FG4618IPZ?

The MSP430FG4618IPZ operates at up to 8 MHz using its digitally controlled oscillator (DCO), with stable performance across the full 1.8 V to 3.6 V supply range. External crystals (LFXT1 or XT2) can be used for higher precision timing, but the DCO enables fast wake-up and flexible clock scaling without external components. The 125-ns instruction cycle time confirms consistent 8-MHz execution capability in active mode.

Does the MSP430FG4618IPZ support real-time clock (RTC) functionality?

Yes, the MSP430FG4618IPZ includes a Basic Timer module with RTC capability, enabled via the 32.768 kHz LFXT1 crystal oscillator connected to XIN/XOUT pins. This provides calendar-time tracking with alarm and interrupt features, fully integrated into the low-power architecture - allowing the device to maintain accurate timekeeping while consuming only 1.3 µA in standby mode.

How many LCD segments can the MSP430FG4618IPZ drive, and what voltage support does it provide?

The MSP430FG4618IPZ drives up to 160 LCD segments using its integrated LCD_A module with a regulated charge pump. It supports static, 2-mux, 3-mux, and 4-mux configurations. The charge pump generates regulated V_LCDCAP internally, eliminating need for external voltage sources - though external LCD bias (via LCDREF, R03–R33) is supported when LCDCPEN = 0 and VLCDEXT = 0.

What are the key differences between MSP430FG4618IPZ and MSP430FG4619IPZ?

The MSP430FG4618IPZ has 116KB+256B flash and 8KB RAM, while the MSP430FG4619IPZ offers 120KB+256B flash and 4KB RAM - identical peripherals, pinout, and package. The trade-off is firmware capacity versus data buffering headroom. Both share the same 12-bit ADC, dual DACs, op-amps, LCD driver, and timer resources, making them drop-in replacements where flash or RAM constraints permit.

Is the MSP430FG4618IPZ pin-compatible with other members of the MSP430xG461x family?

Yes, all 100-pin PZ-package variants - including MSP430FG4616IPZ, MSP430FG4617IPZ, MSP430FG4618IPZ, and MSP430FG4619IPZ - share identical pinouts and electrical characteristics. This enables hardware reuse across firmware variants, simplifying design scalability and migration paths within the same package footprint and thermal profile.