Texas Instruments MSP430F148IRTDR

Overview

MSP430F148IRTDR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 48KB flash, 2KB RAM, dual USARTs, a 12-bit ADC with 8 channels and internal reference, two 16-bit timers (Timer_A3 and Timer_B7), and hardware multiplier - designed for battery-powered sensor systems and portable metering applications operating from 1.8 V to 3.6 V.

For engineers reviewing the MSP430F148IRTDR datasheet, MSP430F148IRTDR pinout, MSP430F148IRTDR application, or MSP430F148IRTDR equivalent, key selection criteria include its 64-pin VQFN (RTD) package, 48 I/O pins with interrupt capability, <10 µs ADC conversion time, wake-up from standby in <6 µs, and dual UART/SPI serial interfaces for industrial telemetry and low-power sensing nodes.

Technical Context

The MSP430F148IRTDR implements a 16-bit CPU with constant generators and 16-bit registers optimized for code efficiency in embedded measurement systems. Its five power-saving modes-including LPM3 with 1.6 µA standby current and 0.1 µA off-mode RAM retention-enable multi-year operation on coin-cell batteries.

It integrates two independent 16-bit timers: Timer_A3 supports three capture/compare registers with PWM generation, while Timer_B7 provides seven capture/compare registers with shadow registers for glitch-free updates. The 12-bit ADC12 operates with internal or external reference, sample-and-hold, and autoscan across eight analog inputs (A0–A7), supporting <10 µs conversion at full resolution.

Key Specifications

Pinout & Package

The MSP430F148IRTDR is housed in a 64-pin VQFN (RTD) package measuring 9 mm × 9 mm with exposed thermal pad connected to DVSS. It provides 48 general-purpose I/O pins distributed across Ports P1–P6, plus dedicated analog inputs (A0–A7), clock outputs (ACLK, SMCLK, MCLK), and JTAG test signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F149IRTDR, the MSP430F148IRTDR trades 12KB flash for identical low-power performance and peripheral set - ideal for cost-optimized, fixed-function metering. Against MSP430F148IPMR, it offers smaller footprint and improved thermal dissipation in VQFN, but requires fine-pitch assembly capability.

Availability

MSP430F148IRTDR is available at Aetrix Electronics and suitable for smart utility metering, industrial sensor nodes, and portable handheld testers requiring stable component supply, long-term lifecycle assurance, and TI-authorized traceability.

Supply support for MSP430F148IRTDR 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 delivering analog, embedded processing, and connectivity solutions with emphasis on energy efficiency and reliability.

The MSP430F148IRTDR belongs to the MSP430F14x ultra-low-power MCU family, engineered specifically for battery-operated measurement and sensing applications where extended runtime, precision analog integration, and robust firmware security are critical.

FAQ

What is the maximum ADC sampling rate supported by the MSP430F148IRTDR?

The MSP430F148IRTDR's 12-bit ADC12 achieves <10 µs conversion time under typical conditions, enabling up to 100 kSPS sampling when configured for single-channel operation. With autoscan across all 8 channels and internal reference, effective throughput drops to ~12.5 kSPS per channel in continuous sequence mode - sufficient for most sensor monitoring and metering applications.

Does the MSP430F148IRTDR support in-system programming without external voltage?

Yes, the MSP430F148IRTDR supports serial onboard programming via its built-in bootloader (BSL) using only the standard I/O pins - no external programming voltage is required. Programming is performed through UART or SPI using the BSL interface, and code protection can be enabled via the security fuse to prevent unauthorized access.

What are the clock source options available on the MSP430F148IRTDR?

The MSP430F148IRTDR supports multiple clock sources: internal digitally controlled oscillator (DCO) with resistor tuning (ROSC), low-frequency watch crystal (LFXT1 on XIN/XOUT), and high-frequency crystal (XT2 on XT2IN/XT2OUT). It generates ACLK (from LFXT1 or DCO), SMCLK (from DCO or XT2), and MCLK (from DCO, XT2, or LFXT1) - all configurable via software for optimal power/performance trade-offs.

Can the MSP430F148IRTDR operate reliably at 3.6 V supply?

Yes, the MSP430F148IRTDR is fully specified for operation across 1.8 V to 3.6 V. At 3.6 V, it delivers higher drive strength on I/O pins and supports maximum CPU frequency (up to 8 MHz with DCO calibration), while maintaining ultra-low-power modes. All peripherals - including ADC, timers, and USARTs - function within specification across the full voltage range.

Is the MSP430F148IRTDR pin-compatible with other devices in the MSP430F14x family?

Yes, the MSP430F148IRTDR shares identical pinout and electrical characteristics with MSP430F149IRTDR, MSP430F147IRTDR, and their RTD-package variants. This allows direct substitution within the same PCB layout when firmware and flash size requirements align - for example, upgrading to MSP430F149IRTDR for additional code space without hardware changes.