Texas Instruments MSP430F6632IPZ

Overview

MSP430F6632IPZ from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 256 KB flash, 16 KB + 2 KB RAM, USB 2.0 full-speed interface, four 16-bit timers, two USCI modules (UART/IrDA/SPI/I²C), RTC with battery backup, and up to 74 GPIOs in a 100-pin LQFP package-designed for battery-powered metering and sensor systems requiring long runtime and integrated USB connectivity.

For engineers reviewing the MSP430F6632IPZ datasheet, MSP430F6632IPZ pinout, MSP430F6632IPZ application, or MSP430F6632IPZ equivalent, key selection criteria include USB PHY integration, 12-bit ADC absence, DAC omission, LQFP-100 packaging, and ultra-low-power LPM3.5/4.5 current specs at 3.0 V.

Technical Context

The MSP430F6632IPZ implements a 16-bit RISC CPUXV2 core with constant generators and hardware multiplier supporting 32-bit operations. Its unified clock system includes FLL stabilization, VLO and REFO internal sources, XT1 (32-kHz crystal), and XT2 (up to 32-MHz crystal), enabling precise timing across active and low-power modes.

Power management integrates a programmable LDO, supply voltage supervisor (SVS), brownout reset (BOR), and five low-power modes-including LPM3.5 (RTC active, 1.1 µA) and LPM4.5 (shutdown, 0.3 µA). The device lacks ADC12_A and DAC12_A peripherals present in higher-family variants, confirmed by Device Comparison Table 6-1.

Key Specifications

Pinout & Package

LQFP-100 package (14 mm × 14 mm), thermally enhanced with exposed thermal pad; pin-compatible with other MSP430F663x IPZ variants including MSP430F6638IPZ and MSP430F6637IPZ per TI SLAS566G datasheet Figure 7-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6637IPZ, MSP430F6632IPZ provides greater firmware capacity (256 KB vs. 192 KB) at identical USB/RTC/peripheral feature set; compared with MSP430F6638IPZ, it omits ADC/DAC to reduce cost and power while retaining full USB, timer, and LCD capabilities for pure digital control applications.

Availability

MSP430F6632IPZ is available at Aetrix Electronics and suitable for smart metering, industrial sensor gateways, and USB-enabled handheld instrumentation requiring stable component supply, long-term lifecycle assurance, and TI-qualified production traceability.

Supply support for MSP430F6632IPZ 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 decades of expertise in ultra-low-power design and industrial-grade reliability.

The MSP430F663x product line targets battery-operated measurement and control systems demanding sub-µA sleep currents, integrated USB, and robust real-time operation-optimized for utility metering, portable test equipment, and intelligent building controls.

FAQ

Does MSP430F6632IPZ include an integrated analog-to-digital converter (ADC)?

No, MSP430F6632IPZ does not include ADC12_A or any on-chip analog-to-digital conversion capability. This is explicitly confirmed in Table 6-1 (Device Comparison) of the SLAS566G datasheet, where the "ADC12_A (Ch)" column shows "–" for MSP430F6632IPZ. Designers requiring analog sensing must add external ADCs or select variants like MSP430F6638IPZ.

What is the maximum operating frequency of MSP430F6632IPZ?

The MSP430F6632IPZ supports a maximum system clock frequency of 20 MHz, as stated in the "16-bit RISC architecture, extended memory, up to 20-MHz system clock" feature list. Its XT2 oscillator accepts crystals up to 32 MHz, but the CPU clock domain is limited to 20 MHz per functional specifications and timing parameters in Section 8.20 (DCO Frequency) and Section 8.27 (Wake-up Times).

Is MSP430F6632IPZ pin-compatible with other MSP430F663x LQFP-100 devices?

Yes, MSP430F6632IPZ shares identical pinout and package (LQFP-100, PZ suffix) with MSP430F6637IPZ, MSP430F6638IPZ, and other IPZ variants per Figure 7-1 in the SLAS566G datasheet. Signal assignments, power pins, and peripheral mappings are consistent across this package group, enabling drop-in replacement where peripheral requirements align.

What USB speed and device classes does MSP430F6632IPZ support?

MSP430F6632IPZ integrates a full-speed USB 2.0 PHY compliant with USB 2.0 specification, supporting 12 Mbps operation. It implements standard USB device classes including CDC (communication device class) and MSC (mass storage class) via firmware-TI's USB stack supports enumeration as virtual COM port or removable drive without external silicon.

Does MSP430F6632IPZ support real-time clock (RTC) functionality with battery backup?

Yes, MSP430F6632IPZ includes the RTC_B module with dedicated battery backup input (VBAT), automatic supply switchover, and alarm capabilities. As confirmed in Section 3 Description and Figure 4-3 (Functional Block Diagram), RTC_B remains operational in LPM3.5 mode at 1.1 µA, preserving timekeeping during main power loss.