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Texas Instruments MSP430FW429IPMR
- Part No.:
- MSP430FW429IPMR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MSP430FW429IPMR.pdf
- Description:
- IC MCU 16BIT 60KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,041
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Product details
Overview
MSP430FW429IPMR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller with 60KB flash, 2KB RAM, integrated 96-segment LCD driver, scan interface for sensor measurement, and dual 16-bit timers-designed for battery-powered utility meters and analog/digital sensor systems.
For engineers reviewing the MSP430FW429IPMR datasheet, MSP430FW429IPMR pinout, MSP430FW429IPMR application, or MSP430FW429IPMR equivalent, this page delivers verified electrical specs, validated 64-pin QFP package mapping, confirmed scan interface timing, real-world metering use cases, and two functionally comparable alternatives with documented differences.
Technical Context
The MSP430FW429IPMR implements a 16-bit RISC CPU with 125-ns instruction cycle time and five software-selectable low-power modes-including LPM4 with 0.1 µA off-mode current. Its FLL+ clock system locks the DCO to a 32.768-kHz crystal, enabling sub-6-µs wake-up from standby.
It integrates a dedicated scan interface with four excitation channels (SIFCH0–SIFCH3), internal 10-bit DAC, comparator output (CAOUT), and SIFCI inputs for resistive/GMR sensor signal conditioning-paired with Timer1_A5 (5 capture/compare registers) and Timer0_A3 (3 capture/compare registers) for precise timing-critical metering functions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 60 KB main memory + 256 B information memory - supports in-system programming and BSL-based field updates without external voltage. |
| RAM | 2 KB - sufficient for real-time sensor data buffering, LCD frame storage, and firmware stack in multi-channel metering applications. |
| Supply Voltage | 1.8 V to 3.6 V - enables direct operation from single Li-ion or 2–3 alkaline cells without regulation overhead. |
| Active Current | 200 µA at 1 MHz, 2.2 V - ensures >10-year battery life in intermittent-read gas/water meter deployments. |
| LCD Drive | Up to 96 segments with 1–4 MUX support - drives standard utility meter displays without external segment drivers. |
| Scan Interface | 4-channel excitation + 4-channel input + 10-bit DAC - enables simultaneous background measurement of LC/resistive sensors (e.g., flow transducers). |
| Wake-up Time | <6 µs from standby - meets fast-response requirements for tamper detection and event-triggered logging. |
Pinout & Package
64-pin Quad Flat Pack (QFP), RoHS-compliant, 10 mm × 10 mm body, 0.5 mm pitch - compatible with standard surface-mount reflow profiles and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0.0 | GPIO / Timer0_A CCI0A input / BSL TX | Primary serial programming transmit line; supports asynchronous UART bootloading without external level shifters. |
| P1.1/TA0.0/MCLK | GPIO / Timer0_A CCI0B input / MCLK output | BSL receive line; also outputs system clock for debug trace or external synchronization. |
| P2.6/CAOUT/S19 | GPIO / Comparator_A output / LCD segment 19 | Direct connection to comparator output enables analog threshold detection with immediate LCD feedback (e.g., low-battery warning). |
| P6.0–P6.3/SIFCH0–SIFCH3 | Scan IF excitation outputs | Drive excitation current/voltage to up to four independent sensor elements (e.g., turbine flow sensors) with programmable timing. |
| P6.4–P6.7/SIFCI0–SIFCI3 | Scan IF comparator inputs | Accept conditioned sensor return signals; internally routed to scan interface comparator for zero-crossing or amplitude detection. |
| RST/NMI | Reset / Non-maskable interrupt | Hardware reset initiation and high-priority fault handling (e.g., oscillator failure or brownout detection). |
| TCK/TMS/TDI/TDO | JTAG test interface | Fully compliant IEEE 1149.1 boundary-scan for production testing and in-circuit debugging. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Scan Interface | Dedicated hardware for background LC/resistive sensor measurement-eliminates CPU polling and reduces firmware complexity in metering designs. |
| 96-Segment LCD Driver | On-chip drive with programmable bias and MUX control-reduces BOM count by removing external LCD controllers and charge pumps. |
| FLL+ Clock System | Digital frequency-locked loop stabilizes DCO to 32.768-kHz crystal-enables accurate real-time clocking and low-jitter PWM without external PLL components. |
| Ultra-Low-Power Modes | Five configurable low-power states with sub-µA standby (0.7 µA) and 0.1 µA RAM-retention off mode-extends battery life in infrequently read utility meters. |
| Bootstrap Loader (BSL) | UART-based flash programming via P1.0/P1.1-allows field firmware updates over existing communication interfaces (e.g., optical port or RF link). |
Applications
| Gas Metering | Water Metering |
|---|---|
Use Scenario: Measures volumetric flow via turbine or ultrasonic transducers, logs consumption, and displays on segmented LCD. IC Role / Device Role / Timing Role: Primary controller executing scan interface acquisition, timer-based pulse counting, and LCD refresh at 32 Hz. Use Value: Integrated scan IF and 96-segment LCD driver reduce component count by ≥4 ICs versus discrete solutions. |
Use Scenario: Detects flow rate and direction using GMR sensors; performs leak/tamper detection via real-time signal analysis. IC Role / Device Role / Timing Role: Sensor interface hub with 4-channel excitation, comparator-based zero-crossing detection, and 16-bit timer timestamping. Use Value: Sub-6-µs wake-up and 0.1 µA off-mode enable 15+ year battery life in static-installation water meters. |
| Heat Metering | Industrial Counter Systems |
Use Scenario: Reads temperature differential and flow rate across heat exchangers; calculates thermal energy (kWh) and stores historical data. IC Role / Device Role / Timing Role: Dual-timer co-processing unit: Timer1_A5 handles flow pulse accumulation while Timer0_A3 manages RTOS tick and LCD update. Use Value: 60KB flash accommodates full IEC 62056-compliant metrology firmware plus secure bootloader and encryption libraries. |
Use Scenario: Counts mechanical events (e.g., conveyor belt pulses) and triggers actuator control based on preset thresholds. IC Role / Device Role / Timing Role: High-reliability counter core with brownout detection, SVS monitoring, and nonvolatile event logging to flash. Use Value: On-chip comparator and programmable SVS level prevent erroneous counts during voltage sag or power interruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FW427IPMR | 32KB flash, 1KB RAM, same 64-pin QFP package and peripheral set | Lower memory capacity limits firmware complexity-suitable for simpler meters without data logging or advanced diagnostics | Select when application firmware fits within 32KB and no future feature expansion is planned. |
| MSP430FR6989IPZ | Ferroelectric RAM (FRAM) instead of flash; 128KB FRAM, 2KB RAM; different pinout (100-pin TQFP) | Eliminates write endurance limits and enables true EEPROM-like data logging; requires PCB redesign due to package and pin count change | Choose for high-cycle data logging applications where flash wear-out is a concern-only with layout revision. |
Compared with MSP430FW427IPMR, the MSP430FW429IPMR provides 28KB more flash for enhanced security, OTA updates, and extended data history; versus MSP430FR6989IPZ, it retains identical pin compatibility and flash-based cost structure but lacks FRAM's infinite write endurance.
Availability
MSP430FW429IPMR is available at Aetrix Electronics and suitable for gas metering, water metering, and industrial counter applications requiring stable component supply, long-term lifecycle support, and TI-authorized traceable sourcing.
Supply support for MSP430FW429IPMR 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 microcontrollers for industrial and metering markets.
The MSP430FW42x product line was engineered specifically for utility infrastructure applications, integrating scan interface, LCD drive, and precision timing to replace multi-IC metering subsystems with a single-chip solution.
FAQ
What is the maximum operating frequency of the MSP430FW429IPMR?
The MSP430FW429IPMR operates at up to 8 MHz via its FLL+ system, which digitally locks the internal DCO to a 32.768-kHz crystal reference. This yields a stable, low-jitter system clock without external high-frequency crystals-critical for accurate pulse counting and LCD timing in metering applications. The MSP430FW429IPMR maintains full functionality across its 1.8–3.6 V supply range at this frequency.
Does the MSP430FW429IPMR support in-system programming without external hardware?
Yes, the MSP430FW429IPMR includes a factory-programmed Bootstrap Loader (BSL) accessible via UART on P1.0 (TX) and P1.1 (RX). This allows full flash memory programming-including firmware updates and security fuse configuration-using only a 3.3 V UART interface and user-defined password protection. No JTAG debugger or external programming voltage is required for field deployment.
How many LCD segments can the MSP430FW429IPMR drive, and what MUX configurations are supported?
The MSP430FW429IPMR drives up to 96 LCD segments using its integrated controller, supporting static, 2-MUX, 3-MUX, and 4-MUX display configurations. Segment and common outputs are automatically assigned based on register settings-not GPIO selection-enabling direct connection to standard utility meter LCD glass without external bias generation or multiplexing logic.
What sensor types are compatible with the scan interface in the MSP430FW429IPMR?
The MSP430FW429IPMR scan interface supports resistive, inductive (LC), and GMR sensors-commonly used in turbine flow meters, rotary encoders, and position sensing. It provides four programmable excitation channels (SIFCH0–SIFCH3), four comparator inputs (SIFCI0–SIFCI3), and an internal 10-bit DAC for reference generation-enabling simultaneous background measurement without CPU intervention.
Is the MSP430FW429IPMR pin-compatible with other devices in the MSP430FW42x family?
Yes, all MSP430FW42x variants-including MSP430FW423IPMR, MSP430FW425IPMR, MSP430FW427IPMR, MSP430FW428IPMR, and MSP430FW429IPMR-are fully pin-compatible in the 64-pin QFP package. Peripheral register maps and pin functions are identical; only flash/RAM sizes and some fuse-configured features differ-enabling scalable design reuse across metering tiers.
MSP430FW429IPMR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-LQFP
- Series:
- MSP430x4xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 8MHz
- Connectivity:
- -
- Peripherals:
- Brown-out Detect/Reset, LCD, POR, PWM, WDT
- Number of I/O:
- 48
- Program Memory Size:
- 60KB (60K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- Slope A/D
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FW429IPMR FAQ
1.How can I place an order for MSP430FW429IPMR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FW429IPMR 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 MSP430FW429IPMR reliable?
The price and inventory of MSP430FW429IPMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FW429IPMR is usually 5 days.
3.What payment methods are accepted for MSP430FW429IPMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FW429IPMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FW429IPMR?
MSP430FW429IPMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FW429IPMR 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 MSP430FW429IPMR?
For technical support, including MSP430FW429IPMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FW429IPMR requirements.
6.How does Aetrix verify that MSP430FW429IPMR is sourced from the original manufacturer or authorized distributors?
All MSP430FW429IPMR 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 MSP430FW429IPMR meets industry standards.
7.What is the process for return or replacement of MSP430FW429IPMR?
All MSP430FW429IPMR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FW429IPMR, 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 MSP430FW429IPMR part is unused and in its original packaging.
Return procedure for MSP430FW429IPMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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