Texas Instruments MSP430F6658IPZR

Overview

MSP430F6658IPZR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller with 384 KB flash, 32 KB + 2 KB RAM, integrated USB 2.0 PHY, 12-bit ADC (200 ksps, 16 channels), dual 12-bit DACs, LCD driver (160 segments), and 74 GPIO pins in a 100-pin LQFP package-designed for battery-powered sensor systems and portable meters.

For engineers reviewing the MSP430F6658IPZR datasheet, MSP430F6658IPZR pinout, MSP430F6658IPZR application, or MSP430F6658IPZR equivalent, key selection criteria include USB integration, RTC with battery backup, low-power mode wake-up time (3 µs), and support for real-time analog acquisition with autoscan ADC in portable measurement designs.

Technical Context

The MSP430F6658IPZR implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO), enabling 3 µs wake-up from LPM3 standby. Its unified clock system integrates FLL stabilization, VLO/REFO internal sources, and support for both 32-kHz XT1 and up to 32-MHz XT2 crystals.

Peripherals include three USCI modules (two UART/IrDA/SPI-capable, one I²C/SPI-capable), four 16-bit timers (TA0 with 5 CC registers; TA1/TA2 with 3 each; TB0 with 7), hardware multiplier, 6-channel DMA, and USB 2.0 full-speed interface with integrated 3.3-V/1.8-V power system and USB-PLL.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PZ), 14 mm × 14 mm body size, surface-mount, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6659IPZR, the MSP430F6658IPZR trades flash/RAM capacity for cost-sensitive designs, while MSP430F5658IPZR removes LCD and USB PHY to reduce silicon area-making MSP430F6658IPZR the optimal balance of integrated peripherals, memory, and package compatibility for portable instrumentation.

Availability

MSP430F6658IPZR is available at Aetrix Electronics and suitable for hand-held meters, digital thermostats, and analog sensor data loggers requiring stable component supply across long-lifecycle industrial and consumer programs.

Supply support for MSP430F6658IPZR 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The MSP430F6658IPZR belongs to TI's MSP430F66xx ultra-low-power MCU family, engineered specifically for portable measurement systems demanding extended battery life, integrated analog peripherals, and USB connectivity without external support ICs.

FAQ

What is the maximum system clock frequency supported by the MSP430F6658IPZR?

The MSP430F6658IPZR supports a maximum system clock frequency of 20 MHz. This is achieved using the FLL-controlled DCO or by directly sourcing MCLK from the high-frequency XT2 oscillator (up to 32 MHz). The 20-MHz specification reflects the guaranteed operational limit for all peripherals and CPU execution under rated conditions per the SLAS700E datasheet.

Does the MSP430F6658IPZR include an integrated USB physical layer?

Yes, the MSP430F6658IPZR includes a fully integrated USB 2.0 full-speed PHY with on-die termination, ESD protection, and dual-voltage (3.3-V and 1.8-V) USB power system. This eliminates the need for external USB transceivers, level shifters, or discrete power regulation-confirmed in Section 1 Features and Figure 4-1 of the SLAS700E datasheet.

How many I/O pins does the MSP430F6658IPZR provide, and what is their functional flexibility?

The MSP430F6658IPZR provides 74 general-purpose I/O pins across ports P1–P9. Each pin supports multiple functions-including digital I/O, USCI serial interfaces, ADC inputs, timer capture/compare, LCD segment/common drive, and interrupt capability-with programmable pull-up/down and drive strength. Pin mapping is fully configurable via port select registers as documented in Section 7.2 of SLAS700E.

What low-power modes are available on the MSP430F6658IPZR, and what is the lowest current consumption?

The MSP430F6658IPZR offers five low-power modes (LPM0–LPM4.5). The lowest active-retention mode is LPM4.5 (shutdown), consuming 0.45 µA at 3.0 V. For RTC operation with full RAM retention, LPM3.5 draws 1.1 µA at 3.0 V. All values are typicals per Section 8.5 of SLAS700E and validated across production lots.

Is the MSP430F6658IPZR pin-compatible with other members of the MSP430F66xx family?

Yes, the MSP430F6658IPZR is pin-compatible with the MSP430F6659IPZR in the same 100-pin LQFP (PZ) package. Both share identical pin assignments, electrical characteristics, and peripheral mappings-verified in Table 6-1 (Device Comparison) and Section 7.1 (Pin Diagrams) of SLAS700E. This allows seamless migration between memory variants without PCB redesign.