Texas Instruments MSP430F5329IPN

Overview

MSP430F5329IPN from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 128 KB flash, 10 KB RAM, integrated 3.3-V LDO, 12-bit ADC (14 external + 2 internal channels), four 16-bit timers (TA0/TA1/TA2/TB0), two USCIs (UART/IrDA/SPI/I²C), RTC, and 63 GPIO pins in an 80-pin LQFP package. It targets battery-powered sensor systems requiring sub-2 µA standby current and 3.5 µs wake-up.

For engineers reviewing the MSP430F5329IPN datasheet, MSP430F5329IPN pinout, MSP430F5329IPN application, or MSP430F5329IPN equivalent, key selection criteria include LPM3 current (1.9 µA at 3 V), ADC resolution (12-bit, 200 ksps), timer count (7 capture/compare registers in TB0), RTC alarm capability, and PN-package I/O mapping for PCB layout validation.

Technical Context

The MSP430F5329IPN implements a digitally controlled oscillator (DCO) stabilized by an FLL loop, supporting system clocks up to 25 MHz. Its unified clock system integrates XT1 (32-kHz crystal), XT2 (up to 32-MHz crystal), REFO (low-frequency trimmed reference), and VLO (ultra-low-power oscillator).

Power management includes a programmable LDO core regulator, supply voltage supervisor (SVS), brownout reset (BOR), and five low-power modes (LPM0–LPM4.5). The device uses CPUXV2 architecture with constant generators and hardware multiplier for 32-bit operations, enabling efficient sensor data processing in active and standby states.

Key Specifications

Pinout & Package

The MSP430F5329IPN is housed in an 80-pin LQFP (PN) package measuring 12 mm × 12 mm with exposed thermal pad connected to VSS. Pin functions are defined per Figure 7-1 of SLAS678G, supporting full I/O remapping via port mapping control.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F5327IPN and MSP430F5325IPN, the MSP430F5329IPN provides maximum on-chip memory (128 KB flash/10 KB RAM) while retaining identical I/O count, timer structure, and ultra-low-power performance - making it the highest-capacity option in the PN-package family.

Availability

MSP430F5329IPN is available at Aetrix Electronics and suitable for wireless sensor nodes, portable data loggers, and smart meter interfaces requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for MSP430F5329IPN 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 markets.

The MSP430F5329IPN belongs to TI's MSP430F5xx ultra-low-power MCU product line, designed specifically for battery-operated measurement and sensing applications demanding nanowatt-level standby power and fast wake-up responsiveness.

FAQ

What is the maximum system clock frequency supported by the MSP430F5329IPN?

The MSP430F5329IPN supports a maximum system clock frequency of 25 MHz using its digitally controlled oscillator (DCO) with FLL stabilization. When using the external high-frequency crystal oscillator (XT2), frequencies up to 32 MHz are possible but require configuration of the FLL reference divider and modulation settings per Section 8.19 of the datasheet. This enables high-throughput ADC sampling and fast UART baud rates without compromising ultra-low-power operation in active mode.

Does the MSP430F5329IPN include an integrated voltage regulator?

Yes, the MSP430F5329IPN integrates a fully functional 3.3-V low-dropout (LDO) regulator with programmable core voltage output. This LDO supplies the VCORE rail and eliminates the need for an external regulator in most designs. It supports dynamic voltage scaling and includes built-in supply voltage supervision (SVS) and brownout reset (BOR) circuitry - all documented in Sections 8.20–8.25 of the SLAS678G datasheet.

How many analog input channels does the 12-bit ADC in the MSP430F5329IPN support?

The MSP430F5329IPN features a 12-bit ADC (ADC12_A) with 16 total input channels: 14 external analog inputs (A0–A13) and 2 internal sources (temperature sensor and VREF+/2). This matches the "14 ext, 2 int" specification in Table 6-1 of SLAS678G. Channel selection is managed via the ADC12MCTLx registers, and autoscan mode allows sequential conversion across multiple channels without CPU intervention.

What are the low-power mode current specifications for the MSP430F5329IPN at 3 V?

At 3 V supply, the MSP430F5329IPN achieves 1.9 µA in LPM3 (RTC + crystal active), 1.1 µA in LPM4 (full RAM retention), and 0.18 µA in LPM4.5 (shutdown mode). These values are measured under typical conditions with all peripherals disabled except those required for each mode, as specified in Section 8.5 of SLAS678G. The LDO remains enabled in LPM3/LPM4 but is bypassed in LPM4.5 to minimize leakage.

Is the MSP430F5329IPN pin-compatible with other devices in the MSP430F532x family?

Yes, the MSP430F5329IPN is pin-compatible with MSP430F5327IPN and MSP430F5325IPN in the 80-pin LQFP (PN) package - all share identical pinouts, signal assignments, and mechanical dimensions per Figure 7-1 of SLAS678G. This allows drop-in replacement within the same package group, provided firmware accommodates differences in flash/RAM size and peripheral enablement.