Texas Instruments MSP430F5435IPNR

Overview

MSP430F5435IPNR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 192 KB Flash, 16 KB RAM, 12-bit ADC (14 external + 2 internal channels), three 16-bit timers (TA0/TA1/TB0), four USCI modules (2 UART/IrDA/SPI + 2 I²C/SPI), and RTC functionality - deployed in battery-powered sensor systems and digital timers requiring sub-µA standby current.

For engineers reviewing the MSP430F5435IPNR datasheet, MSP430F5435IPNR pinout, MSP430F5435IPNR application, or MSP430F5435IPNR equivalent, key selection criteria include LPM3 current (2.6 µA), 80-pin LQFP package compatibility, dual USCI_A/B channel count, 14-channel ADC input support, and integrated hardware multiplier for real-time signal processing.

Technical Context

The MSP430F5435IPNR implements a unified clock system (UCS) with FLL stabilization, VLO/REFO internal oscillators, and support for 32-kHz crystals and up to 32-MHz high-frequency crystals. Its power-management subsystem includes an integrated LDO with programmable core voltage and supply supervision with brownout detection.

It features three independent 16-bit timers: TA0 (5 capture/compare registers), TA1 (3 registers), and TB0 (7 shadow registers), enabling simultaneous PWM generation, input capture, and interval timing. The 12-bit ADC supports autoscan across 14 external analog inputs with internal reference and sample-and-hold.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (12 mm × 12 mm), RoHS-compliant, surface-mount. Pinout validated per TI SLAS612F Rev. September 2018, Figure 4-2 and Table 4-1 for MSP430F5435IPN (identical pin mapping to MSP430F5435IPNR).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F5435IPNR, MSP430F5437IPN offers +64 KB Flash for larger firmware or secure boot partitions, while MSP430F5418IPN trades Flash capacity for lower unit cost - both retain identical timer, ADC, USCI, and power-performance characteristics.

Availability

MSP430F5435IPNR is available at Aetrix Electronics and suitable for analog sensor systems, digital thermostats, and hand-held meters requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MSP430F5435IPNR 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 for industrial, automotive, and consumer applications.

The MSP430F5435IPNR belongs to the MSP430F5xx ultra-low-power MCU family, designed specifically for portable and energy-constrained measurement systems requiring extended battery life and integrated mixed-signal peripherals.

FAQ

What is the maximum operating frequency of the MSP430F5435IPNR?

The MSP430F5435IPNR supports a maximum system clock frequency of 18 MHz, achieved via its digitally controlled oscillator (DCO) and FLL loop within the Unified Clock System. This frequency is confirmed in Section 1.1 Features and validated across recommended operating conditions (2.2 V–3.6 V) in the SLAS612F datasheet. The MSP430F5435IPNR maintains full peripheral functionality-including ADC sampling, USCI communication, and timer operations-at this speed.

Does the MSP430F5435IPNR support crystal oscillators for real-time clock operation?

Yes, the MSP430F5435IPNR supports 32-kHz crystal oscillation on pins P7.0/XIN and P7.1/XOUT for precise RTC operation. This configuration is explicitly documented in the functional block diagram (Figure 1-2), pin descriptions (Table 4-1), and specifications (Section 5.15). The RTC_A module remains fully operational in LPM3 with crystal-based timekeeping and alarm capability.

How many universal serial communication interfaces does the MSP430F5435IPNR include?

The MSP430F5435IPNR includes four USCI modules: USCI_A0 and USCI_A1 support UART, IrDA, and SPI; USCI_B0 and USCI_B1 support I²C and SPI. This is confirmed in Section 1.1 Features and Table 3-1 (Device Comparison), which lists "2" under CHANNEL A and "2" under CHANNEL B for MSP430F5435. All four are accessible in the 80-pin PN package.

What is the ADC resolution and input channel count for the MSP430F5435IPNR?

The MSP430F5435IPNR integrates a 12-bit successive-approximation ADC (ADC12_A) with 14 external analog input channels (A0–A7, A8–A15) and 2 internal channels (temperature sensor and VREF). This specification is stated in Section 1.1 Features, Table 3-1, and Section 5.36–5.41 of the SLAS612F datasheet, and applies identically to the MSP430F5435IPNR variant.

Is the MSP430F5435IPNR pin-compatible with other devices in the MSP430F543x family?

Yes, the MSP430F5435IPNR is pin-compatible with MSP430F5437IPN and MSP430F5418IPN in the 80-pin LQFP (PN) package, sharing identical pin numbering, signal assignments, and electrical characteristics per Table 4-1 and Figure 4-2. This allows direct substitution where Flash size requirements align, without PCB layout changes.