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Texas Instruments MSP430F6637IPZR
- Part No.:
- MSP430F6637IPZR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F6637IPZR.pdf
- Description:
- IC MCU 16BIT 192KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,344
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Product details
Overview
MSP430F6637IPZR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 192 KB flash, 16 KB + 2 KB RAM, USB 2.0 full-speed interface, dual 12-bit DACs, 12-bit ADC with 16 channels (12 external), and integrated LCD driver for up to 160 segments - deployed in battery-powered sensor systems and portable meters.
For engineers reviewing the MSP430F6637IPZR datasheet, MSP430F6637IPZR pinout, MSP430F6637IPZR application, or MSP430F6637IPZR equivalent, key selection criteria include USB integration, 74 I/O pins in LQFP-100, RTC with battery backup, low-power modes down to 0.3 µA, and dual DAC synchronization capability.
Technical Context
The MSP430F6637IPZR implements a 16-bit RISC CPU 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 core regulation.
Peripherals include four 16-bit timers (TA0 with 5 capture/compare registers; TA1/TA2 with 3 each; TB0 with 7), two USCIs (USCI_A0/A1: UART/IrDA/SPI; USCI_B0/B1: I²C/SPI), and USB-PHY with integrated 3.3-V/1.8-V power system and USB-PLL - all operating under five low-power modes with 3-µs wake-up from LPM3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with hardware multiplier for 32-bit arithmetic - enables efficient signal processing in resource-constrained embedded firmware. |
| Flash / RAM | 192 KB flash + 16 KB + 2 KB SRAM - supports complex USB stack, real-time control logic, and LCD frame buffer storage. |
| USB Interface | Full-speed USB 2.0 with integrated PHY, PLL, and dual power rails (3.3 V/1.8 V) - eliminates external transceiver and simplifies host connectivity. |
| ADC/DAC | 12-bit ADC (200 ksps, 16-channel autoscan) + dual synchronized 12-bit DACs - enables simultaneous analog acquisition and precision waveform generation. |
| Low-Power Modes | LPM3.5 (1.1 µA RTC active) and LPM4.5 (0.3 µA shutdown) - extends battery life in always-on metering and sensor logging applications. |
| I/O Count | 74 GPIO pins in LQFP-100 package - supports high-pin-count interfaces including LCD segment drivers, USB D+/D−, and multiple SPI/I²C buses. |
| Timer Resources | Four 16-bit timers: TA0 (5 CC), TA1/TA2 (3 CC each), TB0 (7 CC) - provides flexible PWM, capture, and real-time scheduling for motor control and timing-critical tasks. |
Pinout & Package
LQFP-100 (14 mm × 14 mm) package with exposed thermal pad; 74 general-purpose I/O pins distributed across Ports P1–P9 and PJ, plus dedicated USB (DP/DM), crystal (XT1/XT2), reset (RST/NMI), and power (DVCC/DVSS/AVCC/AVSS) terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI | Reset / Non-maskable interrupt input | Active-low reset with Schmitt-trigger input; also serves as NMI source for critical fault handling. |
| DP / DM | USB differential data pair | Full-speed USB 2.0 physical layer interface - requires 27-Ω series resistors and proper PCB impedance control (90 Ω differential). |
| XT1IN / XT1OUT | Low-frequency crystal oscillator terminals | Supports 32.768-kHz watch crystal for RTC operation with automatic load capacitance tuning. |
| XT2IN / XT2OUT | High-frequency crystal oscillator terminals | Supports crystals up to 32 MHz for system clock generation; bypassable via software-controlled XT2BYPASS mode. |
| P1.x – P9.x / PJ.x | General-purpose I/O ports | 74 total configurable pins with interrupt capability, peripheral multiplexing (e.g., USCI, ADC, timer), and LCD segment/com drive support. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB 2.0 full-speed PHY | Eliminates need for external transceiver; includes on-chip 3.3-V/1.8-V regulators and USB-PLL for clock synthesis from internal DCO. |
| Dual synchronized 12-bit DACs | Enables precise analog output generation with channel-to-channel matching - critical for calibration signals and sensor excitation. |
| 160-segment LCD driver | Direct drive of multiplexed LCD panels without external bias circuitry; supports static, 2-, 3-, or 4-mux configurations with contrast control. |
| RTC with battery backup | Retains timekeeping during main power loss using VBAT supply; supports alarms, calendar functions, and periodic interrupts in LPM3.5. |
| 6-channel DMA controller | Offloads CPU from memory-intensive transfers (e.g., ADC buffer fills, USB endpoint buffering), reducing active-mode current and latency. |
Applications
| Portable Hand-Held Meter | Digital Thermostat |
|---|---|
Use Scenario: Battery-powered multimeter measuring voltage, current, and resistance with LCD display and USB data export. IC Role / Device Role / Timing Role: Central MCU managing analog front-end (ADC), user interface (LCD + buttons), USB communication, and power sequencing. Use Value: Ultra-low standby current (1.8 µA) enables multi-year battery life; integrated USB avoids external level-shifting components. |
Use Scenario: Wall-mounted HVAC controller monitoring ambient temperature/humidity and driving relay outputs with local display. IC Role / Device Role / Timing Role: Real-time sensor fusion node with RTC-based scheduling, LCD display refresh, and periodic wireless gateway sync via USB. Use Value: Integrated 12-bit ADC and comparator enable direct sensor interfacing; LPM3.5 mode maintains accurate timekeeping during mains outage. |
| Remote Sensor Node | Digital Timer System |
Use Scenario: Wireless environmental monitor logging temperature, pressure, and light levels, then uploading via USB when docked. IC Role / Device Role / Timing Role: Low-power data acquisition engine with autonomous sampling, timestamping (RTC), and buffered USB bulk transfer. Use Value: 74 GPIO support sensor expansion headers and debug interfaces; dual DACs calibrate reference voltages per sensor channel. |
Use Scenario: Programmable industrial timer with keypad input, 160-segment LCD countdown display, and relay control outputs. IC Role / Device Role / Timing Role: Precision timing controller using TB0's 7 capture/compare registers for multi-stage event sequencing and alarm generation. Use Value: Hardware timer resources eliminate software timing jitter; LCD_B module drives high-contrast segmented display without external driver IC. |
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 |
|---|---|---|---|
| MSP430F6638IPZR | 256 KB flash (vs. 192 KB), same peripherals and pinout - identical LQFP-100 package and USB/LCD/ADC/DAC feature set. | Preferred where firmware complexity demands larger code space (e.g., USB HID + bootloader + sensor fusion algorithms). | Select when additional flash headroom is required without changing PCB layout or firmware architecture. |
| MSP430F6636IPZR | 128 KB flash, otherwise identical peripheral complement and LQFP-100 footprint - same USB, LCD, ADC, DAC, and timer capabilities. | Suitable for cost-sensitive designs with smaller firmware footprints (e.g., basic metering or timer without advanced analytics). | Choose for BOM cost reduction where application logic fits within 128 KB and no future flash expansion is anticipated. |
Compared with MSP430F6638IPZR and MSP430F6636IPZR, the MSP430F6637IPZR delivers optimal balance of flash capacity (192 KB), full peripheral integration, and LQFP-100 compatibility - making it ideal for mid-complexity USB-connected measurement devices requiring field-upgradable firmware.
Availability
MSP430F6637IPZR is available at Aetrix Electronics and suitable for portable hand-held meters, digital thermostats, and remote sensor nodes requiring stable component supply and long-term industrial availability.
Supply support for MSP430F6637IPZR 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 industrial, automotive, and consumer electronics.
The MSP430F6637IPZR belongs to TI's ultra-low-power 16-bit MCU family designed specifically for battery-operated measurement, sensing, and human-interface applications demanding extended runtime and integrated analog peripherals.
FAQ
What is the maximum system clock frequency supported by the MSP430F6637IPZR?
The MSP430F6637IPZR supports a maximum system clock frequency of 20 MHz. This is achieved using the integrated FLL with XT2 crystal input (up to 32 MHz) or internal DCO, enabling high-speed instruction execution while maintaining ultra-low power consumption in active mode (270 µA/MHz at 8 MHz, 3.0 V). The MSP430F6637IPZR datasheet specifies timing parameters validated up to 20 MHz for flash and peripheral operation.
Does the MSP430F6637IPZR support USB device enumeration without external components?
Yes, the MSP430F6637IPZR integrates a full-speed USB 2.0 PHY, USB-PLL, and dual-voltage power system (3.3 V and 1.8 V), allowing complete USB device enumeration using only passive termination resistors (27 Ω on DP/DM) and standard USB connector wiring. No external transceiver, level shifter, or voltage regulator is required for basic HID or CDC class operation - confirmed in the MSP430F6637IPZR functional block diagram and USB electrical specifications section.
How many analog input channels does the MSP430F6637IPZR ADC support, and what reference options are available?
The MSP430F6637IPZR features a 12-bit ADC (ADC12_A) with 16 total input channels: 12 external analog inputs (A0–A11) and 4 internal sources (temperature sensor, VCC/2, VMID, and AVCC). Reference voltage options include AVCC, internal references (1.5 V, 2.0 V, 2.5 V), or external VREF+ - all selectable via ADC12MCTLx register bits, with linearity performance specified across all modes in the MSP430F6637IPZR datasheet.
What low-power modes are available on the MSP430F6637IPZR, and what is the lowest current draw?
The MSP430F6637IPZR offers 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 minimum is LPM4.5 (full shutdown), consuming 0.3 µA at 3.0 V. These values are measured with RTC enabled in LPM3.5 and all clocks disabled in LPM4.5 - verified in Section 8.5 of the MSP430F6637IPZR datasheet under "Low-Power Mode Supply Currents".
Is the MSP430F6637IPZR pin-compatible with other devices in the MSP430F663x family?
Yes, the MSP430F6637IPZR in the LQFP-100 (PZ) package shares identical pinout, electrical characteristics, and peripheral mapping with MSP430F6638IPZR, MSP430F6636IPZR, MSP430F6635IPZR, MSP430F6634IPZR, and MSP430F6633IPZR - as confirmed in the Device Comparison table and Pin Diagrams (Figure 7-1) of the MSP430F6637IPZR datasheet. This allows direct substitution within the same package variant without PCB changes.
MSP430F6637IPZR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- 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:
- 192KB (192K 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:
MSP430F6637IPZR FAQ
1.How can I place an order for MSP430F6637IPZR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F6637IPZR 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 MSP430F6637IPZR reliable?
The price and inventory of MSP430F6637IPZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F6637IPZR is usually 5 days.
3.What payment methods are accepted for MSP430F6637IPZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F6637IPZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F6637IPZR?
MSP430F6637IPZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F6637IPZR 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 MSP430F6637IPZR?
For technical support, including MSP430F6637IPZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F6637IPZR requirements.
6.How does Aetrix verify that MSP430F6637IPZR is sourced from the original manufacturer or authorized distributors?
All MSP430F6637IPZR 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 MSP430F6637IPZR meets industry standards.
7.What is the process for return or replacement of MSP430F6637IPZR?
All MSP430F6637IPZR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F6637IPZR, 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 MSP430F6637IPZR part is unused and in its original packaging.
Return procedure for MSP430F6637IPZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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