Texas Instruments MSP430F6636IZQWR

Overview

MSP430F6636IZQWR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring a 128 KB flash memory, 16 KB + 2 KB RAM, USB 2.0 full-speed interface, 12-bit ADC with 16 channels (12 external), dual 12-bit DACs, integrated LCD driver for up to 160 segments, and 74 GPIO pins in a 113-ball MicroStar Junior™ BGA package. It targets battery-powered portable measurement systems requiring RTC backup, analog sensing, and human-interface display.

For engineers reviewing the MSP430F6636IZQWR datasheet, MSP430F6636IZQWR pinout, MSP430F6636IZQWR application, or MSP430F6636IZQWR equivalent, key selection criteria include USB integration without external PHY, ultra-low standby current (1.8 µA), 3 µs wake-up time, 12-bit ADC performance at 200 ksps, and compatibility with TI's MSP430F663x family toolchain and firmware libraries.

Technical Context

The MSP430F6636IZQWR 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), and XT2 (up to 32 MHz) sources, enabling precise frequency stabilization and flexible low-power mode transitions.

Peripherals are tightly coupled via a 6-channel DMA controller and shared interrupt vectors. The USB subsystem includes integrated PHY, 3.3-V/1.8-V power system, USB-PLL, and eight bidirectional endpoints - all operating independently of CPU intervention during data transfer. The RTC_B module supports alarm and battery-backed operation with automatic supply switching.

Key Specifications

Pinout & Package

Package: MicroStar Junior™ BGA (113-ball, 7 mm × 7 mm, 0.5 mm pitch). Ball pitch and land pattern comply with JEDEC MO-245AC standard. Thermal pad on underside requires solder paste stencil opening per TI SLAU272.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6636IZQWR, the MSP430F6636IPZ offers identical functionality in a more serviceable package, while the MSP430F6635IZQW trades DAC capability for doubled flash capacity - both maintain full pin and software compatibility within the MSP430F663x family.

Availability

MSP430F6636IZQWR is available at Aetrix Electronics and suitable for portable handheld meters, digital thermostats, remote sensor nodes, and analog-digital hybrid controllers requiring stable component supply throughout extended production lifecycles.

Supply support for MSP430F6636IZQWR 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 90 years of innovation in low-power electronics.

The MSP430F6636IZQWR belongs to TI's MSP430F663x ultra-low-power MCU family, designed specifically for portable measurement, sensor interface, and human-machine interaction applications where battery longevity and integrated analog/mixed-signal capability are critical.

FAQ

What is the maximum system clock frequency supported by the MSP430F6636IZQWR?

The MSP430F6636IZQWR supports a maximum system clock frequency of 20 MHz. This is achieved using the integrated FLL with XT2 crystal (up to 32 MHz input) or internal DCO, and is validated across the full operating voltage range (1.8 V to 3.6 V) and temperature range (–40°C to 85°C). The 20-MHz limit ensures reliable execution of the CPUXV2 core and synchronized peripheral operation without timing violations in the MSP430F6636IZQWR.

Does the MSP430F6636IZQWR support USB device enumeration without external components?

Yes, the MSP430F6636IZQWR supports full USB 2.0 full-speed device enumeration with no external components required. Its integrated USB-PHY, on-die 3.3-V and 1.8-V regulators, USB-PLL, and internal pull-up resistor on USB_DP enable plug-and-play connection to host systems. The MSP430F6636IZQWR complies with USB 2.0 specification for device descriptors, configuration requests, and endpoint management - verified in TI's USB stack v3.20.0.

How many analog input channels does the 12-bit ADC in the MSP430F6636IZQWR support?

The 12-bit ADC12_A module in the MSP430F6636IZQWR supports 16 total input channels: 12 external analog inputs (A0–A11) and 4 internal sources (temperature sensor, VCC/2, VREF/2, and VMID). Channel selection, sample timing, and autoscan sequencing are fully configurable in hardware via ADC12CTL0/1 registers - all features documented for the exact MSP430F6636IZQWR in SLAS566G Section 8.37–8.42.

Is the MSP430F6636IZQWR pin-compatible with other devices in the MSP430F663x family?

Yes, the MSP430F6636IZQWR shares identical ball mapping and electrical characteristics with other ZQW-package variants in the MSP430F663x family, including MSP430F6635IZQW, MSP430F6634IZQW, and MSP430F6633IZQW. Pin-to-pin compatibility is confirmed in TI's SLAS566G Section 7.1 and Table 6-1 - allowing drop-in replacement where flash, RAM, or peripheral differences do not impact firmware or layout constraints.

What is the standby current consumption of the MSP430F6636IZQWR in LPM3 mode?

The MSP430F6636IZQWR consumes 1.8 µA at 2.2 V and 2.1 µA at 3.0 V in LPM3 mode (standby with watchdog, crystal, and full RAM retention), as specified in SLAS566G Section 8.5. This value is measured under typical conditions with all clocks disabled except ACLK sourced from 32-kHz XT1, and includes current for the supply supervisor and RTC_B backup circuitry - directly applicable to the MSP430F6636IZQWR.