Texas Instruments MSP430F169IRTDT

Overview

MSP430F169IRTDT from Texas Instruments is an ultralow-power 16-bit mixed-signal microcontroller featuring 60KB+256B flash memory, 2KB RAM, dual 12-bit DACs, a 12-bit ADC with internal reference and autoscan, two USARTs (UART/SPI/I²C), three-channel DMA, and Timer_B7 with seven capture/compare registers. It operates from 1.8 V to 3.6 V and supports sub-6-μs wake-up from standby mode - ideal for battery-powered sensor nodes and portable instrumentation.

For engineers reviewing the MSP430F169IRTDT datasheet, MSP430F169IRTDT pinout, MSP430F169IRTDT application, or MSP430F169IRTDT equivalent, key selection considerations include its 64-pin QFN (RTD) package, dual USART support (including I²C on USART0), 60KB flash capacity among F16x series, and verified low-power operation down to 0.2 μA in RAM-retention off mode.

Technical Context

The MSP430F169IRTDT implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations and high code efficiency. Its clock system integrates DCO, ACLK, SMCLK, and MCLK with programmable dividers and supports crystal oscillators up to 8 MHz on XT2.

Peripherals are memory-mapped and fully interrupt-capable: Timer_A3 provides three capture/compare registers with PWM capability; Timer_B7 offers seven shadowed registers for synchronized waveform generation; the 12-bit ADC12 supports up to eight analog inputs with sample-and-hold and internal 2.5-V reference; and dual DAC12 modules deliver voltage-output analog signals with synchronization support.

Key Specifications

Pinout & Package

Package: 64-pin QFN (RTD), 9 mm × 9 mm, 0.5 mm pitch, exposed thermal pad connected to DVSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F168IRTDT, the MSP430F169IRTDT delivers 12KB additional flash for feature-rich firmware or field-upgradable code; versus MSP430F1612IRTDT, it retains I²C capability and simpler RAM layout at the expense of 3KB less RAM - making it optimal for I²C-dependent sensor hubs with moderate memory needs.

Availability

MSP430F169IRTDT is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical meters, and smart utility meters requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature ranges (−40°C to 85°C).

Supply support for MSP430F169IRTDT 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 MSP430F169IRTDT belongs to TI's MSP430F16x series - engineered specifically for battery-operated measurement systems where nanowatt-level active and standby power, integrated analog peripherals, and robust code security are essential.

FAQ

What is the maximum operating frequency of the MSP430F169IRTDT?

The MSP430F169IRTDT supports a maximum system clock (MCLK) frequency of 8 MHz when using the external XT2 oscillator. Its digitally controlled oscillator (DCO) is factory-trimmed to operate up to 1 MHz at 2.2 V, with typical active-mode performance of 1 MHz at 330 μA - enabling precise timing control while maintaining ultralow power consumption in the MSP430F169IRTDT.

Does the MSP430F169IRTDT support I²C communication?

Yes, the MSP430F169IRTDT supports I²C communication exclusively through USART0, which can be configured in I²C mode using pins P3.1 (SDA) and P3.3 (SCL). USART1 does not support I²C. This capability is confirmed in the SLAS368G datasheet functional block diagram and terminal functions table for MSP430F16x devices, and applies directly to the MSP430F169IRTDT.

What is the pin-compatible alternative to the MSP430F169IRTDT in the same RTD package?

The MSP430F168IRTDT is pin-compatible with the MSP430F169IRTDT in the 64-pin QFN (RTD) package and shares identical peripheral mapping, power characteristics, and timing specifications. It differs only in flash size (48KB vs. 60KB) and is listed in the same "AVAILABLE OPTIONS" table in SLAS368G - making it a direct drop-in alternative where firmware footprint permits.

How much RAM does the MSP430F169IRTDT have, and is it contiguous?

The MSP430F169IRTDT has 2KB of RAM located in address range 0x0200–0x09FF, fully contiguous and directly accessible by the CPU and DMA. This RAM allocation matches the memory organization diagram for MSP430F16x in SLAS368G and is distinct from the extended RAM architecture used in MSP430F161x devices - ensuring predictable pointer arithmetic and stack behavior in the MSP430F169IRTDT.

Can the MSP430F169IRTDT perform ADC and DAC operations simultaneously?

Yes, the MSP430F169IRTDT supports concurrent ADC12 and DAC12 operation: the ADC12 can run autonomously using internal timing or external triggers (e.g., Timer_B), while DAC12 outputs are updated via register writes or DMA. Both modules share the same analog supply (AVCC/AVSS) and reference structure, and their synchronization capability allows coordinated analog stimulus-response sequences - a verified feature in the MSP430F169IRTDT's functional block diagram and register descriptions.