Texas Instruments MSP430F6659IPZ

Overview

MSP430F6659IPZ from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 512 KB flash, 64 KB + 2 KB RAM, USB 2.0 interface, integrated LCD driver for up to 160 segments, and a 12-bit ADC with 16-channel autoscan-designed for battery-powered metering and portable sensor systems requiring real-time clock backup and fast 3 µs wake-up from LPM3.

For engineers reviewing the MSP430F6659IPZ datasheet, MSP430F6659IPZ pinout, MSP430F6659IPZ application, or MSP430F6659IPZ equivalent, key selection criteria include USB PHY integration, 74 GPIO count in LQFP-100, RTC with crystal support in LPM3.5 (1.1 µA), dual 12-bit DACs with synchronization, and full-speed USB endpoint configuration (8 IN/8 OUT).

Technical Context

The MSP430F6659IPZ implements a 16-bit RISC CPUXV2 core with constant generators and hardware multiplier supporting 32-bit operations. Its unified clock system integrates FLL stabilization, VLO and REFO internal sources, XT1 (32-kHz crystal), and XT2 (up to 32-MHz crystal), enabling precise timing across five low-power modes.

Peripherals include three USCI modules (USCI_A0–A2 for UART/IrDA/SPI; USCI_B0–B2 for I²C/SPI; plus dedicated USB module with integrated 3.3-V/1.8-V power system and USB-PLL), four 16-bit timers (TA0 with 5 CC registers; TA1/TA2 with 3 each; TB0 with 7), and memory integrity detection (MID) for safety-critical firmware execution.

Key Specifications

Pinout & Package

LQFP-100 (14 mm × 14 mm) package with exposed thermal pad; 100-pin square grid, 0.5-mm pitch, RoHS-compliant lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F5659IPZ and MSP430F6459IPZ, the MSP430F6659IPZ uniquely combines USB 2.0 PHY, 160-segment LCD driver, and RTC-backed LPM3.5 in a single LQFP-100 device - eliminating two external ICs in metering and portable instrumentation designs.

Availability

MSP430F6659IPZ is available at Aetrix Electronics and suitable for smart metering, portable gas detection, industrial thermostat control, USB-reprogrammable timers, and battery-backed RTC applications requiring stable component supply over extended production lifecycles.

Supply support for MSP430F6659IPZ 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 consumer markets since 1930.

The MSP430F665x series was designed specifically for ultra-low-power, USB-connected, display-enabled metering and sensing applications - integrating USB, LCD, RTC, and high-precision ADC/DAC in a single chip to minimize system-level BOM and power consumption.

FAQ

What is the maximum system clock frequency supported by the MSP430F6659IPZ?

The MSP430F6659IPZ supports a maximum system clock frequency of 20 MHz, achieved using the FLL-controlled DCO or external high-frequency crystals up to 32 MHz on the XT2 oscillator. This frequency enables real-time signal processing in metrology applications while maintaining compatibility with the 16-bit RISC architecture's deterministic timing behavior. The MSP430F6659IPZ achieves this performance within its 1.8–3.6 V operating range and ultra-low active-mode current of 295 µA/MHz at 8 MHz and 3.0 V.

Does the MSP430F6659IPZ include an integrated USB physical layer?

Yes, the MSP430F6659IPZ includes a fully integrated USB 2.0 full-speed PHY, 3.3-V and 1.8-V USB power system, and USB-PLL - enabling direct connection to a USB Type-A receptacle without external transceivers, level shifters, or voltage regulators. This integration is confirmed in the functional block diagram and Section 4 of the SLAS700E datasheet. The MSP430F6659IPZ supports eight input and eight output endpoints for flexible device-class implementation.

How many analog input channels does the 12-bit ADC in the MSP430F6659IPZ support?

The MSP430F6659IPZ features the ADC12_A module with 16 total input channels: 12 external analog inputs (A0–A11) and 4 internal sources (temperature sensor, VCC/2, VMID, and supply voltage). It operates at up to 200 ksps with autoscan mode, allowing sequential conversion of multiple channels without CPU intervention. This capability is explicitly documented in Table 6-1 and Section 8.37–8.42 of the SLAS700E datasheet.

What low-power modes are available on the MSP430F6659IPZ, and what is the lowest current draw?

The MSP430F6659IPZ supports five low-power modes (LPM0–LPM4.5). The lowest active-retention mode is LPM3.5 (RTC active with crystal), drawing 1.1 µA at 3.0 V; the absolute lowest is LPM4.5 (full shutdown), drawing 0.45 µA at 3.0 V. Both values are typical and specified in Section 1, Features, and Section 8.5 of the SLAS700E datasheet. These modes enable multi-year battery operation in portable instrumentation and utility meters.

Is the MSP430F6659IPZ pin-compatible with other members of the MSP430F665x family?

Yes, the MSP430F6659IPZ in the LQFP-100 (PZ) package shares identical pinout and electrical characteristics with the MSP430F6658IPZ, as confirmed in TI's Device Comparison table (Table 6-1) and Pin Diagrams section (Section 7.1). Both devices have 74 GPIO, same USB, ADC, and timer pin allocations, and identical power/ground pin locations - enabling drop-in replacement for flash-size scaling without PCB revision.