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Texas Instruments MSP430FW425IPM
- Part No.:
- MSP430FW425IPM
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MSP430FW425IPM.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,117
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Product details
Overview
MSP430FW425IPM from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller with 16KB Flash, 512B 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 MSP430FW425IPM datasheet, MSP430FW425IPM pinout, MSP430FW425IPM application, or MSP430FW425IPM equivalent, key selection criteria include its 64-pin QFP package, sub-µA standby current (0.7 µA), <6 µs wake-up time, FLL+ clock system, and dedicated scan interface for resistive/GMR sensor excitation and signal acquisition.
Technical Context
The MSP430FW425IPM implements a 16-bit RISC CPU with 125-ns instruction cycle time, constant generators, and seven addressing modes. Its FLL+ module locks the DCO to ACLK (32.768 kHz crystal) for stable MCLK generation up to 8 MHz without external high-frequency crystals.
It integrates Timer0_A3 (3 capture/compare registers) and Timer1_A5 (5 capture/compare registers), Comparator_A, programmable SVS with brownout detection, and a scan interface with four excitation channels (SIFCH0–SIFCH3), 10-bit DAC output (SIFDACOUT), and comparator feedback (SIFCAOUT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125-ns instruction cycle; enables deterministic real-time control in metering firmware. |
| Memory | 16KB + 256B Flash / 512B RAM; supports field-upgradable firmware and local data buffering for gas/water volume logs. |
| Power Consumption | Active mode: 200 µA @ 1 MHz, 2.2 V; Standby: 0.7 µA; Off mode (RAM retention): 0.1 µA - extends 10+ year battery life in sealed meters. |
| Wake-up Time | <6 µs from standby to active mode; critical for rapid response to pulse inputs (e.g., flow sensor interrupts) in utility metering. |
| LCD Support | Drives up to 96 segments with 1–4 multiplexing; eliminates external LCD controller in handheld and industrial meter displays. |
| Scan Interface | 4-channel excitation (SIFCH0–SIFCH3), 10-bit DAC output (SIFDACOUT), comparator feedback (SIFCAOUT); enables direct LC/resistive sensor readout without signal conditioning ICs. |
| Clock System | FLL+ with 32.768 kHz crystal input; generates stable MCLK up to 8 MHz without external HF crystal - reduces BOM cost and board space. |
Pinout & Package
64-pin Quad Flat Pack (QFP), RoHS-compliant, 10 mm × 10 mm body, 0.5 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0.0 | GPIO / Timer0_A CCI0A input / BSL TX | Primary serial programming transmit line; also captures timer events from external sensors or pulses. |
| P1.1/TA0.0/MCLK | GPIO / Timer0_A CCI0B input / MCLK output | BSL receive line; MCLK output enables clock distribution to external peripherals (e.g., ADCs, transceivers). |
| P2.6/CAOUT/S19 | GPIO / Comparator_A output / LCD segment 19 | Direct comparator result output for threshold detection; doubles as LCD drive - simplifies alarm indicator logic. |
| P6.0–P6.3/SIFCH0–SIFCH3 | Scan IF excitation outputs | Four independent sensor excitation sources for simultaneous multi-channel LC/resistive sensor measurement. |
| P6.6/SIFCI2/SIFDACOUT | Scan IF input / 10-bit DAC output | Accepts conditioned sensor signal; DAC output enables closed-loop biasing of GMR or bridge sensors. |
| RST/NMI | Reset / Non-maskable interrupt | Hardware reset initiation and emergency interrupt for critical fault conditions (e.g., tamper detection). |
| XIN/XOUT | Crystal oscillator input/output | Connects to 32.768 kHz watch crystal for precise ACLK generation - essential for metrology-grade timing accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Scan Interface | Four excitation channels + comparator + 10-bit DAC enable direct interfacing with LC, resistive, or GMR sensors - eliminates discrete analog front-end components. |
| Ultra-Low-Power Operation | 0.1 µA off-mode current with RAM retention allows full state preservation during long sleep intervals between meter readings. |
| On-Chip LCD Driver | 96-segment support with 1–4 MUX eliminates need for external LCD controller IC in portable and industrial meter displays. |
| FLL+ Clock System | Digitally locked DCO stabilizes MCLK to ±1% over voltage/temperature - ensures consistent timing for metrology calculations without external crystal. |
| Bootstrap Loader (BSL) | UART-based flash programming via P1.0/P1.1 requires no JTAG hardware - enables field firmware updates through existing communication interfaces. |
Applications
| Gas Metering | Water Metering |
|---|---|
|
Use Scenario: Measures volumetric flow using ultrasonic transit-time or diaphragm pulse outputs in residential/commercial gas meters. IC Role / Device Role / Timing Role: Primary metrology controller executing flow calculation algorithms, managing pulse counting, and driving LCD display. Use Value: Sub-µA standby current and <6 µs wake-up enable responsive pulse capture while sustaining >10-year battery life. |
Use Scenario: Reads mechanical counter dials or magnetic reed switches in cold/hot water meters with tamper detection. IC Role / Device Role / Timing Role: Sensor interface MCU handling reed switch debouncing, LCD update, and low-power sleep scheduling. Use Value: Integrated scan interface directly acquires resistive sensor signals (e.g., leak detection electrodes), reducing external component count by 3–5 parts. |
| Industrial Heat Metering | Hand-Held Utility Testers |
|
Use Scenario: Calculates thermal energy consumption using paired RTD inputs and flow rate in district heating systems. IC Role / Device Role / Timing Role: Dual-sensor acquisition node with synchronized ADC sampling (via Timer_A triggers) and on-chip computation. Use Value: Comparator_A and Timer1_A5 support precision slope ADC conversion for RTD linearization - avoids external precision op-amps. |
Use Scenario: Portable diagnostic tool for field verification of meter accuracy, communication protocol testing, and firmware validation. IC Role / Device Role / Timing Role: Standalone test platform with LCD, keypad interface, and UART/IR communication stack. Use Value: 16KB Flash and BSL enable in-field firmware patching and configuration updates without programming hardware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FW427IPM | 32KB Flash, 1KB RAM, same peripherals and pinout | Required for larger firmware (e.g., multi-protocol stacks, advanced encryption, extended logging) | Select when firmware size exceeds 16KB or RAM usage exceeds 512B; identical layout and driver compatibility. |
| MSP430FW423IPM | 8KB Flash, 256B RAM, same peripherals and pinout | Suitable for minimal-feature meters (e.g., basic pulse counting only, no LCD or complex diagnostics) | Choose for cost-sensitive, low-complexity designs where memory headroom is not required. |
Compared with MSP430FW425IPM, the FW427IPM provides double Flash/RAM for feature-rich metrology firmware, while the FW423IPM reduces cost for entry-level meters - all share identical 64-pin QFP packaging, scan interface, and ultra-low-power behavior.
Availability
MSP430FW425IPM is available at Aetrix Electronics and suitable for gas metering, water metering, and industrial heat metering requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for MSP430FW425IPM 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 focus on power efficiency, reliability, and system integration.
The MSP430FW42x product line was engineered specifically for ultra-low-power utility metering and sensor-based measurement applications - integrating scan interface, LCD driver, and metrology-optimized timers into a single chip.
FAQ
What is the maximum operating frequency of the MSP430FW425IPM?
The MSP430FW425IPM achieves up to 8 MHz MCLK using its integrated FLL+ module locked to a 32.768 kHz crystal. This frequency is sufficient for real-time metrology calculations and LCD refresh without requiring external high-frequency oscillators - ensuring robust operation across temperature and voltage ranges specified in the SLAS383E datasheet.
Does the MSP430FW425IPM support in-system programming?
Yes, the MSP430FW425IPM supports in-system programming via its Bootstrap Loader (BSL) using UART on P1.0 (TX) and P1.1 (RX). It does not require external programming voltage - enabling field firmware updates through existing communication interfaces like IR or RS-485, with password protection for secure code integrity.
How many LCD segments can the MSP430FW425IPM drive?
The MSP430FW425IPM drives up to 96 LCD segments with 1-, 2-, 3-, or 4-multiplex configurations. Segment outputs are mapped across P2–P5 pins (e.g., S0–S23, COM0–COM3), and LCD control is managed entirely by hardware - freeing CPU cycles for metrology tasks while maintaining display stability at ultra-low power.
What sensor types are compatible with the scan interface in the MSP430FW425IPM?
The scan interface in the MSP430FW425IPM supports resistive, inductive (LC), and GMR sensors. It provides four excitation channels (SIFCH0–SIFCH3), internal comparator feedback (SIFCAOUT), and a 10-bit DAC output (SIFDACOUT) - enabling direct interface with rotary encoders, flow transducers, and tamper-detection bridges without external signal conditioning.
Is the MSP430FW425IPM pin-compatible with other MSP430FW42x devices?
Yes, the MSP430FW425IPM is fully pin-compatible with MSP430FW423IPM, MSP430FW427IPM, MSP430FW428IPM, and MSP430FW429IPM in the 64-pin QFP package. All share identical pin functions, electrical characteristics, and peripheral register maps - allowing scalable memory upgrades without PCB redesign.
MSP430FW425IPM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-LQFP
- Series:
- MSP430x4xx
- Packaging:
- Bulk
- 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:
- 16KB (16K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 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:
MSP430FW425IPM FAQ
1.How can I place an order for MSP430FW425IPM through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FW425IPM 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 MSP430FW425IPM reliable?
The price and inventory of MSP430FW425IPM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FW425IPM is usually 5 days.
3.What payment methods are accepted for MSP430FW425IPM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FW425IPM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FW425IPM?
MSP430FW425IPM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FW425IPM 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 MSP430FW425IPM?
For technical support, including MSP430FW425IPM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FW425IPM requirements.
6.How does Aetrix verify that MSP430FW425IPM is sourced from the original manufacturer or authorized distributors?
All MSP430FW425IPM 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 MSP430FW425IPM meets industry standards.
7.What is the process for return or replacement of MSP430FW425IPM?
All MSP430FW425IPM units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FW425IPM, 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 MSP430FW425IPM part is unused and in its original packaging.
Return procedure for MSP430FW425IPM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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