Texas Instruments MSP430FG4618IPZR

Overview

MSP430FG4618IPZR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller with 116KB+256B flash, 8KB RAM, integrated 12-bit ADC (12 channels), dual 12-bit DACs, three configurable op-amps, LCD driver (160 segments), and dual 16-bit timers (Timer_A3 and Timer_B7). It operates from 1.8 V to 3.6 V and targets portable medical devices and electronic metering systems requiring long battery life and analog signal conditioning.

For engineers reviewing the MSP430FG4618IPZR datasheet, MSP430FG4618IPZR pinout, MSP430FG4618IPZR application, or MSP430FG4618IPZR equivalent, key selection criteria include its 100-pin LQFP package, 80 I/O pins, on-chip LCD charge pump, real-time clock capability, and dual USCI modules supporting UART/IrDA/SPI/I²C - all critical for embedded metering and sensor interface designs.

Technical Context

The MSP430FG4618IPZR implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO), enabling wake-up from standby mode in under 6 µs. Its peripheral set includes a hardware multiplier, three-channel DMA, and a basic timer with RTC functionality - optimized for deterministic low-power sensing and display control.

It integrates two independent serial interfaces: USCI_A0 (UART/IrDA/SPI) and USCI_B0 (SPI/I²C), plus USART1 (UART/SPI), allowing concurrent communication with sensors, displays, and host controllers. The 12-bit ADC supports internal reference, sample-and-hold, and autoscan; dual DACs provide synchronized analog outputs for calibration or waveform generation.

Key Specifications

Pinout & Package

The MSP430FG4618IPZR is housed in a 100-pin LQFP (PZ) package measuring 14 mm × 14 mm, with exposed thermal pad. Pin assignments are defined per TI SLAS508K Rev. May 2020, Figure 4-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FG4619IPZ and MSP430FG4617IPZ, the MSP430FG4618IPZR uniquely offers the highest flash capacity (116KB) among 8KB-RAM variants - ideal for feature-rich metering firmware with integrated security or communication stacks.

Availability

MSP430FG4618IPZR 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 consistent parametric performance across production batches.

Supply support for MSP430FG4618IPZR 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 expertise in ultra-low-power design.

The MSP430FG461x product line was engineered specifically for battery-operated measurement applications demanding integrated analog peripherals, LCD support, and deterministic low-power operation - exemplified by the MSP430FG4618IPZR's 116KB flash and 8KB RAM configuration.

FAQ

What is the maximum operating frequency of the MSP430FG4618IPZR?

The MSP430FG4618IPZR features a digitally controlled oscillator (DCO) that supports system clock frequencies up to 8 MHz. Its 16-bit RISC architecture delivers a 125-ns instruction cycle time at this speed. The device also supports external crystal oscillators (LFXT1 and XT2) for precision timing. All timing specifications are validated per TI SLAS508K Rev. May 2020, Section 5.19 (DCO) and Section 5.20–5.21 (crystal oscillators).

Does the MSP430FG4618IPZR support real-time clock (RTC) functionality?

Yes, the MSP430FG4618IPZR includes a basic timer module with real-time clock (RTC) capability. It supports calendar mode with alarms, leap-year compensation, and interrupt generation on second/minute/hour/day events. This RTC is implemented in hardware and operates independently in LPM3 standby mode using the ACLK source. Details are specified in Section 6.9 and Table 5-13 of the SLAS508K datasheet.

How many I/O pins does the MSP430FG4618IPZR have, and what is their voltage tolerance?

The MSP430FG4618IPZR provides 80 general-purpose I/O pins across Ports P1–P10. All digital I/O pins are fully compliant with the supply voltage range (1.8 V to 3.6 V) and support Schmitt-trigger inputs with hysteresis. Input thresholds scale with DVCC, and outputs drive rail-to-rail. Absolute maximum ratings and leakage characteristics are documented in Sections 5.6 and 5.8 of SLAS508K.

Can the MSP430FG4618IPZR drive a 4-mux LCD directly?

Yes, the MSP430FG4618IPZR's LCD_A module supports static and 2–4 mux LCDs up to 160 segments. It includes an integrated regulated charge pump (enabled via LCDCPEN bit) that generates boosted voltages internally, eliminating external components. The module supports COM0–COM3 outputs and segment lines S0–S39, with dedicated pins like COM0 (Pin 52) and LCDCAP (Pin 59) required for proper operation per Section 5.14.

What debug interface does the MSP430FG4618IPZR use, and is JTAG supported?

The MSP430FG4618IPZR supports standard 4-wire JTAG (TCK, TMS, TDI/TCLK, TDO/TDI) for full-speed emulation and flash programming. It also supports Spy-Bi-Wire (2-wire JTAG) for reduced pin count debugging. Both interfaces are accessible via dedicated pins (Pins 90–93) and are fully compatible with TI's MSP-FET and IAR/Code Composer Studio toolchains. JTAG fuse programming and security lock behavior are detailed in Sections 5.46–5.47 of SLAS508K.