Texas Instruments MSP430F6658IPZ

Overview

MSP430F6658IPZ from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 384 KB flash, 32 KB + 2 KB RAM, USB 2.0 full-speed interface, 12-bit ADC (200 ksps, 16 channels), dual 12-bit DACs, integrated LCD driver (160 segments), and 74 GPIO pins in a 100-pin LQFP package - deployed in battery-powered sensor systems and portable meters.

For engineers reviewing the MSP430F6658IPZ datasheet, MSP430F6658IPZ pinout, MSP430F6658IPZ application, or MSP430F6658IPZ equivalent, key selection criteria include USB integration, RTC with battery backup, ultra-low standby current (2.0 µA at 3.0 V), LPM3.5 shutdown mode (1.1 µA), and 3-µs wake-up time from LPM3 - critical for energy-constrained embedded designs.

Technical Context

The MSP430F6658IPZ implements a 16-bit RISC CPUXV2 core with constant generators and hardware multiplier supporting 32-bit operations. Its unified clock system integrates FLL, VLO, REFO, XT1 (32-kHz crystal), and XT2 (up to 32-MHz crystal) with programmable LDO regulation for core voltage control.

Peripherals include three USCI modules (USCI_A0–A2 for UART/IrDA/SPI; USCI_B0–B2 for I²C/SPI; plus dedicated USB-PHY with integrated 3.3-V/1.8-V power system and USB-PLL), six-channel DMA, RTC_B with alarm and battery backup, and memory integrity detection (MID) for safety-critical operation.

Key Specifications

Pinout & Package

LQFP-100 package (14 mm × 14 mm, 0.5-mm pitch) with exposed thermal pad; pin-compatible with other MSP430F66xx/F64xx 100-pin variants. Pin functions defined per TI SLAS700E Section 7.1–7.2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6659IPZ, the MSP430F6658IPZ offers identical USB, RTC, and low-power performance but with reduced flash/RAM; versus MSP430F5658IPZ, it adds LCD_B and USB-PHY - making it optimal for display-equipped, USB-configurable field instruments requiring long battery life.

Availability

MSP430F6658IPZ is available at Aetrix Electronics and suitable for smart metering, portable medical devices, industrial sensor nodes, and programmable thermostats requiring stable component supply across multi-year production cycles.

Supply support for MSP430F6658IPZ 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 over 50 years of innovation in low-power microcontrollers and precision analog ICs.

The MSP430F6658IPZ belongs to TI's MSP430F66xx ultra-low-power MCU family, designed specifically for battery-operated measurement and control applications demanding extended runtime, integrated peripherals, and robust real-time responsiveness.

FAQ

What is the maximum system clock frequency supported by the MSP430F6658IPZ?

The MSP430F6658IPZ supports a maximum system clock (MCLK) frequency of 20 MHz, derived from its integrated FLL-controlled DCO or high-frequency XT2 crystal oscillator (up to 32 MHz). This enables deterministic real-time execution of time-critical tasks such as USB packet handling, ADC sampling at 200 ksps, and LCD refresh - all while maintaining ultra-low active-mode current of 295 µA/MHz at 3.0 V.

Does the MSP430F6658IPZ include an integrated USB physical layer?

Yes, the MSP430F6658IPZ integrates a full-speed USB 2.0 PHY with internal 90-Ω differential termination, 3.3-V and 1.8-V USB power system, and USB-PLL - eliminating the need for external transceivers or voltage regulators. This allows direct connection of USB_DP and USB_DM pins to a standard USB Type-A receptacle, reducing bill-of-materials cost and PCB area in field-deployable devices.

How many I/O pins does the MSP430F6658IPZ provide, and what packaging options are available?

The MSP430F6658IPZ provides 74 general-purpose I/O pins in the LQFP-100 package (14 mm × 14 mm, 0.5-mm pitch). It is exclusively offered in this 100-pin LQFP variant - unlike the MSP430F6659IPZ which also comes in nFBGA-113 and MicroStar Junior BGA packages. The LQFP-100 footprint ensures compatibility with standard reflow processes and facilitates manual prototyping and debugging.

What low-power modes are available on the MSP430F6658IPZ, and what are their typical current draws?

The MSP430F6658IPZ supports five low-power modes: LPM3 (2.0 µA at 3.0 V, RTC active), LPM3.5 (1.1 µA at 3.0 V, RTC + crystal running), and LPM4.5 (0.45 µA at 3.0 V, full shutdown). These modes leverage the integrated LDO, SVS, and brownout detection to maintain system integrity during voltage fluctuations - enabling decade-long operation on CR2032 batteries in remote sensor deployments.

Can the MSP430F6658IPZ drive an LCD display directly, and how many segments does it support?

Yes, the MSP430F6658IPZ includes the LCD_B module capable of driving up to 160 segments in static, 2-, 3-, or 4-mux configurations with integrated contrast control and charge pump. This eliminates external LCD bias generators and enables direct connection to segmented LCD glass used in thermostats, handheld meters, and industrial HMI panels - reducing component count and power consumption compared to discrete driver solutions.