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Texas Instruments MSP430F6638IZQWT
- Part No.:
- MSP430F6638IZQWT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 113-VFBGA
- Datasheet:
-
MSP430F6638IZQWT.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 113BGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,354
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Product details
Overview
MSP430F6638IZQWT from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 256 KB flash, 16 KB + 2 KB RAM, USB 2.0 full-speed interface, 12-bit ADC with 16 channels (12 external), dual 12-bit DACs, and integrated LCD driver for up to 160 segments - deployed in battery-powered metering and sensor systems requiring sub-µA standby current.
For engineers reviewing the MSP430F6638IZQWT datasheet, MSP430F6638IZQWT pinout, MSP430F6638IZQWT application, or MSP430F6638IZQWT equivalent, this page delivers verified functional identity, confirmed MicroStar Junior™ BGA-113 package mapping, validated low-power mode timing (3 µs wake-up), USB PHY integration, and real-world alternative part comparisons - all grounded in TI's SLAS566G specification.
Technical Context
The MSP430F6638IZQWT 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) with programmable LDO regulation and brownout detection.
Peripherals include four 16-bit timers (TA0/TA1/TA2/TB0), six-channel DMA, RTC_B with battery backup, USCI_A0/A1 (UART/IrDA/SPI) and USCI_B0/B1 (I²C/SPI), comparator_B, and USB 2.0 controller with integrated PHY, 3.3-V/1.8-V power system, and eight endpoints - all operating within 1.8–3.6 V supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2 with hardware multiplier for 32-bit arithmetic - enables efficient signal processing in resource-constrained embedded firmware. |
| Flash / RAM | 256 KB flash + 16 KB + 2 KB RAM - supports complex USB stack, LCD GUI, and sensor fusion without external memory. |
| USB Interface | Full-speed USB 2.0 with integrated PHY, 3.3-V/1.8-V power system, and 8 endpoints - eliminates need for external transceiver or level-shifting components. |
| ADC | 12-bit ADC12_A with 200 ksps, 16 channels (12 external + 4 internal), autoscan, and shared reference - suitable for multi-sensor analog acquisition with minimal CPU overhead. |
| Low-Power Modes | LPM3: 1.8 µA at 2.2 V; LPM3.5 (RTC active): 1.1 µA at 3.0 V; LPM4.5: 0.3 µA at 3.0 V - enables >10-year battery life in always-on monitoring applications. |
| Wake-up Time | 3 µs from LPM3 to active mode - meets real-time response requirements for interrupt-driven sensor event handling. |
| LCD Driver | Integrated LCD_B driver supporting up to 160 segments with contrast control - reduces BOM count and PCB area in portable display interfaces. |
Pinout & Package
Package: MicroStar Junior™ BGA-113 (7 mm × 7 mm, ZQW). Pinout validated per TI SLAS566G Figure 7-4 (113-pin ZQW package diagram) and Table 7-2 (signal descriptions).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI/SBWTDIO | Reset / Non-maskable interrupt / Spy-Bi-Wire debug I/O | Single-pin multifunction interface for reset assertion, NMI triggering, and 2-wire JTAG debugging - simplifies test access and field recovery. |
| DP / DM | USB differential data pair | Direct connection to USB host/device; integrated termination and ESD protection eliminate external resistors/capacitors. |
| AVCC / AVSS | Analog power supply / ground | Dedicated 1.8–3.6 V analog rail decoupling required for ADC/DAC reference stability and noise immunity. |
| P1.x–P9.x | General-purpose I/O ports | 74 total GPIOs with configurable drive strength, interrupt capability, and peripheral multiplexing - supports flexible sensor, display, and communication interfacing. |
| XT1IN / XT1OUT | Low-frequency crystal oscillator terminals | Supports 32.768-kHz watch crystal for RTC_B timekeeping with automatic calibration and low-power operation. |
Key Features
| Feature | Design Value |
|---|---|
| Fully integrated USB 2.0 PHY | Eliminates external transceiver; supports full-speed enumeration, suspend/resume, and endpoint buffering without external components. |
| Programmable LDO core regulator | Enables dynamic voltage scaling between 1.8 V and 3.6 V to optimize active-mode current versus performance trade-offs. |
| Hardware CRC16 module | Offloads checksum computation from CPU during firmware updates or data transmission - improves reliability and reduces latency. |
| Real-time clock with battery backup | RTC_B retains time/date across main power loss using VBAT; supports alarms and calendar functions without external RTC IC. |
| Dual synchronized 12-bit DACs | Generates precise analog waveforms or control voltages simultaneously - ideal for closed-loop motor or sensor biasing applications. |
Applications
| Smart Energy Metering | Portable Medical Sensor Hub |
|---|---|
Use Scenario: Three-phase electricity meter with tamper detection, LCD display, and USB-based firmware update. IC Role / Device Role / Timing Role: Primary MCU executing metrology algorithms, driving 128-segment LCD, managing USB HID class for configuration, and maintaining RTC for billing timestamps. Use Value: Integrated 12-bit ADC with 12 external channels acquires voltage/current samples synchronously; LPM3.5 mode extends battery backup runtime to >5 years. |
Use Scenario: Handheld pulse oximeter with SpO₂ sensor, OLED display, and USB data export to PC. IC Role / Device Role / Timing Role: Signal processor for analog front-end filtering, LCD controller for real-time waveform rendering, and USB device for clinical data transfer. Use Value: Dual DACs generate precise LED drive currents; 3 µs wake-up ensures immediate response to user button press or sensor trigger. |
| Industrial Remote Terminal Unit (RTU) | Wireless HVAC Thermostat |
Use Scenario: DIN-rail mounted RTU collecting temperature, humidity, and digital I/O status via Modbus over UART. IC Role / Device Role / Timing Role: Central controller running Modbus RTU slave stack, managing multiple USCI_A/B peripherals, and logging data to flash with timestamp from RTC_B. Use Value: Six-channel DMA automates UART-to-RAM transfers without CPU intervention; 74 GPIOs support direct connection to 16 discrete inputs and 8 relay outputs. |
Use Scenario: Battery-powered thermostat with ambient sensing, LCD UI, and USB provisioning for schedule programming. IC Role / Device Role / Timing Role: Low-power system manager coordinating sensor reads, display refresh, and USB mass storage emulation for configuration file loading. Use Value: LPM4.5 draws only 0.3 µA during sleep - enabling 2+ year operation on two AA cells; integrated LCD_B drives 80-segment display directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F6636IZQWT | 128 KB flash, same 16 KB + 2 KB RAM, identical peripherals and pinout - no USB PHY changes. | Suitable for cost-sensitive designs where firmware size ≤128 KB and USB functionality remains essential. | Select when flash budget allows reduction without sacrificing USB, ADC, or LCD capabilities. |
| MSP430F6635IZQWT | 256 KB flash but no DAC12_A block - retains USB, ADC12_A, LCD_B, and all timers. | Preferred for USB-connected data loggers requiring high-resolution analog capture but no analog output generation. | Choose when DAC functionality is unnecessary and full flash capacity is needed for larger protocol stacks or encryption libraries. |
Compared with MSP430F6638IZQWT, MSP430F6636IZQWT offers identical USB/LCD/ADC features at lower flash cost, while MSP430F6635IZQWT trades DACs for retained flash - both share the same MicroStar Junior™ BGA-113 footprint and low-power profile, enabling layout reuse in derivative designs.
Availability
MSP430F6638IZQWT is available at Aetrix Electronics and suitable for smart metering, portable medical devices, industrial RTUs, and wireless thermostats requiring stable component supply and long-term lifecycle support.
Supply support for MSP430F6638IZQWT 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 delivering analog, embedded processing, and connectivity solutions with emphasis on energy efficiency and system integration.
The MSP430F663x product line targets ultra-low-power sensing and measurement applications - designed to maximize battery life in portable instrumentation, utility metering, and environmental monitoring systems through optimized power modes and integrated analog peripherals.
FAQ
What is the package type and pin count of the MSP430F6638IZQWT?
The MSP430F6638IZQWT uses the MicroStar Junior™ BGA-113 package (7 mm × 7 mm) with 113 solder balls. This is confirmed in TI's SLAS566G datasheet Section 11 and Device Information table. The ZQW suffix explicitly denotes this BGA variant, distinct from the 100-pin LQFP (PZ) and 113-pin nFBGA (ZCA) options.
Does the MSP430F6638IZQWT include an integrated USB physical layer?
Yes, the MSP430F6638IZQWT integrates a full-speed USB 2.0 PHY with built-in termination, ESD protection, and 3.3-V/1.8-V power system. As documented in Section 1 Features and Figure 4-1 of SLAS566G, this eliminates external transceivers and supports all eight USB endpoints without additional silicon.
What are the key low-power mode current specifications for the MSP430F6638IZQWT?
Per SLAS566G Section 8.5, the MSP430F6638IZQWT draws 1.8 µA in LPM3 (3.0 V), 1.1 µA in LPM3.5 (RTC active, 3.0 V), and 0.3 µA in LPM4.5 (3.0 V). These values are measured with full RAM retention and crystal-based RTC operation - critical for multi-year battery operation in remote sensors.
How many analog input channels does the ADC12_A module support on the MSP430F6638IZQWT?
The ADC12_A module on the MSP430F6638IZQWT supports 16 total channels: 12 external analog inputs (A0–A11) plus 4 internal sources (temperature sensor, VCC/2, VREF, and VMID). This is specified in Table 6-1 and Section 8.37–8.42 of SLAS566G, enabling simultaneous multi-sensor acquisition.
Is the MSP430F6638IZQWT pin-compatible with other members of the MSP430F663x family in the same package?
Yes - the MSP430F6638IZQWT shares identical MicroStar Junior™ BGA-113 pinout with MSP430F6636IZQWT and MSP430F6635IZQWT, as confirmed by TI's package diagrams (Figure 7-4) and Device Comparison Table 6-1. All three support 74 GPIOs, USB DP/DM, and identical power/ground ball assignments.
MSP430F6638IZQWT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 113-VFBGA
- Series:
- MSP430F6xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, IrDA, LINbus, SCI, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 74
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 18K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 16x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F6638IZQWT FAQ
1.How can I place an order for MSP430F6638IZQWT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F6638IZQWT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MSP430F6638IZQWT reliable?
The price and inventory of MSP430F6638IZQWT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F6638IZQWT is usually 5 days.
3.What payment methods are accepted for MSP430F6638IZQWT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F6638IZQWT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F6638IZQWT?
MSP430F6638IZQWT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F6638IZQWT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MSP430F6638IZQWT?
For technical support, including MSP430F6638IZQWT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F6638IZQWT requirements.
6.How does Aetrix verify that MSP430F6638IZQWT is sourced from the original manufacturer or authorized distributors?
All MSP430F6638IZQWT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MSP430F6638IZQWT meets industry standards.
7.What is the process for return or replacement of MSP430F6638IZQWT?
All MSP430F6638IZQWT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F6638IZQWT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MSP430F6638IZQWT part is unused and in its original packaging.
Return procedure for MSP430F6638IZQWT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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