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Texas Instruments FW427IPMR-ACTA
- Part No.:
- FW427IPMR-ACTA
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
FW427IPMR-ACTA.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,432
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Product details
Overview
FW427IPMR-ACTA from Texas Instruments is a 32KB Flash, 1KB RAM ultra-low-power 16-bit RISC microcontroller in 64-pin QFP packaging, featuring integrated LCD driver (96 segments), dual 16-bit timers (Timer0_A3 and Timer1_A5), Scan Interface for sensor measurement, and Comparator_A - designed for battery-powered utility metering applications including water, gas, and heat meters.
For engineers reviewing the FW427IPMR-ACTA datasheet, FW427IPMR-ACTA pinout, FW427IPMR-ACTA application, or FW427IPMR-ACTA equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in analog/digital sensor systems, and validated alternative options for metering and low-power embedded designs.
Technical Context
The FW427IPMR-ACTA implements a 16-bit MSP430x4xx architecture with constant generators and seven addressing modes, enabling single-cycle register operations and high code efficiency. Its FLL+ clock system locks DCO to 32.768 kHz crystal input, delivering stable MCLK/SMCLK/ACLK with sub-6 µs wake-up from LPM4.
It integrates a dedicated Scan Interface with four excitation channels (SIFCH0–SIFCH3), internal 10-bit DAC (SIFDACOUT), comparator, and VCC/2 reference for resistive/LC sensor signal conditioning - paired with Timer1_A5's five capture/compare registers for precise timing of sensor measurements and LCD multiplexing control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125-ns instruction cycle; supports register-to-register ops in one CPU clock cycle |
| Flash / RAM | 32KB + 256B Flash memory, 1KB RAM - sufficient for full metering firmware with calibration tables and secure BSL |
| Supply Range | 1.8 V to 3.6 V - enables direct operation from single Li-SOCl₂ or two alkaline cells without regulation |
| Ultra-Low Power | Active mode: 200 µA @ 1 MHz, 2.2 V; Standby: 0.7 µA; Off mode (RAM retention): 0.1 µA |
| LCD Support | Drives up to 96 segments in static, 2-/3-/4-MUX configurations - eliminates external LCD controller in handheld meters |
| Scan Interface | Four-channel analog front-end with excitation outputs, comparator, 10-bit DAC, and SIFCOM termination - enables direct connection to GMR/resistive flow sensors |
Pinout & Package
FW427IPMR-ACTA is housed in a 64-pin Quad Flat Pack (QFP) package with 0.5 mm pitch, JEDEC MS-026 compliant, suitable for automated SMT assembly and industrial thermal cycling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0.0 | GPIO / Timer0_A Capture/Compare Input 0 | Primary BSL data transmit pin; supports CCI0A input for pulse-width measurement in flow sensing |
| P1.1/TA0.0/MCLK | GPIO / Timer0_A Capture Input 0 / MCLK Output | BSL data receive; MCLK output enables external clock monitoring or synchronization |
| P2.6/CAOUT/S19 | GPIO / Comparator_A Output / LCD Segment 19 | Direct comparator output for threshold detection; doubles as LCD segment drive when LCDEN=1 |
| P6.0–P6.3/SIFCH0–SIFCH3 | Scan IF Channel Excitation Outputs | Drive excitation current/voltage to four independent LC or resistive sensors (e.g., turbine, ultrasonic transducers) |
| P6.4–P6.7/SIFCI0–SIFCI3 | Scan IF Channel Input to Comparator | Accept conditioned sensor return signals; feed into internal comparator for zero-crossing or amplitude detection |
| COM0–COM3 | LCD Backplane Outputs | Generate common electrode waveforms for 2-/3-/4-MUX LCDs - no external bias generator required |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Scan Interface | Enables direct analog sensor interface without external op-amps or ADCs - reduces BOM count by ≥4 components in meter designs |
| 96-Segment LCD Driver | Eliminates need for external LCD controller IC and associated timing logic - simplifies PCB layout and lowers power |
| FLL+ Clock System | Stabilizes DCO within 6 µs using 32.768 kHz crystal - ensures fast wake-up and accurate timekeeping for billing intervals |
| Five Low-Power Modes | LPM4 draws only 0.1 µA with RAM retention - extends battery life to >10 years in static meter deployments |
| Bootstrap Loader (BSL) | UART-based in-system programming via P1.0/P1.1 - allows field firmware updates without JTAG hardware |
Applications
| Water Metering | Gas Metering |
|---|---|
Use Scenario: Measures volumetric flow via turbine or ultrasonic sensor in residential/commercial water meters. IC Role / Device Role / Timing Role: FW427IPMR-ACTA acts as primary metering controller: executes scan interface excitation, captures zero-crossings, computes flow rate, drives LCD display, and logs usage data. Use Value: Integrated Scan IF and 96-segment LCD reduce component count by 6+ parts versus discrete solutions - lowering total cost and improving long-term reliability. | Use Scenario: Monitors diaphragm displacement or thermal mass flow in domestic gas meters with pulse output or analog interface. IC Role / Device Role / Timing Role: FW427IPMR-ACTA serves as analog front-end processor and display manager: conditions sensor signals via Comparator_A and SIF DAC, applies temperature compensation, and displays consumption on segmented LCD. Use Value: On-chip 10-bit DAC and comparator enable precise analog signal conditioning - eliminating external precision references and reducing calibration drift over temperature. |
| Heat Metering | Industrial Flow Monitoring |
Use Scenario: Calculates thermal energy consumption in district heating systems using paired temperature and flow sensors. IC Role / Device Role / Timing Role: FW427IPMR-ACTA performs dual-sensor acquisition (PT100/NTC + flow), computes ΔT × flow integral, stores hourly data in Flash, and drives 4-MUX LCD with tariff indicators. Use Value: 32KB Flash accommodates full EN 1434-compliant firmware with encryption, tamper logging, and multi-tariff support - no external memory needed. | Use Scenario: Embedded controller in portable flow test equipment for HVAC commissioning and leak detection. IC Role / Device Role / Timing Role: FW427IPMR-ACTA operates as portable data logger: samples analog sensor inputs at 100 Hz via Timer1_A5 triggers, buffers data in RAM, and displays real-time waveform on LCD. Use Value: Sub-6 µs wake-up from LPM4 enables burst-mode sampling - achieving 99.9% duty-cycle sleep while maintaining 100 Hz effective sample rate and <10 µA average current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FW425IPMR | 16KB Flash, 512B RAM - half the program memory and RAM capacity of FW427IPMR-ACTA | Suitable for simpler metering firmware without multi-tariff or extended logging; lacks headroom for future feature upgrades | Select when BOM cost is critical and firmware size remains under 14KB with safety margin |
| MSP430FW428IPMR | 48KB Flash, 2KB RAM - 50% more Flash and double RAM vs. FW427IPMR-ACTA; identical peripherals and pinout | Enables advanced features like OTA updates, cryptographic acceleration, and extended data history - ideal for smart meter gateways | Choose for next-generation designs requiring firmware scalability and enhanced security without layout change |
Compared with FW427IPMR-ACTA, MSP430FW425IPMR offers lower memory for cost-sensitive basic meters, while MSP430FW428IPMR provides headroom for secure, feature-rich implementations - both share identical I/O mapping and peripheral sets, enabling seamless migration within the same PCB footprint.
Availability
FW427IPMR-ACTA is available at Aetrix Electronics and suitable for water metering, gas metering, and heat metering applications requiring stable component supply, long-life battery operation, and industrial-grade reliability.
Supply support for FW427IPMR-ACTA 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 low-power analog and embedded processing technologies, with decades of leadership in metering and industrial MCU solutions.
The MSP430FW42x product line was engineered specifically for ultra-low-power utility metering, integrating sensor interface, LCD drive, and secure firmware execution in a single chip - targeting 10+ year battery life in sealed meter housings.
FAQ
What is the maximum LCD segment count supported by FW427IPMR-ACTA?
FW427IPMR-ACTA supports up to 96 LCD segments across static, 2-MUX, 3-MUX, and 4-MUX configurations. The integrated LCD controller manages segment and common outputs directly, eliminating external bias generation circuitry. This capability is confirmed in the SLAS383E datasheet Section 1.1 and functional block diagram, and applies specifically to the FW427IPMR-ACTA variant within the MSP430FW42x family.
Does FW427IPMR-ACTA include a hardware bootloader?
Yes, FW427IPMR-ACTA includes an on-chip Bootstrap Loader (BSL) accessible via UART on P1.0 (TXD) and P1.1 (RXD). It supports flash programming without external JTAG hardware, uses password protection, and is documented in SLAU319. The BSL is factory-programmed and fully functional on all FW427IPMR-ACTA units - enabling field firmware updates and secure provisioning.
What sensor types are compatible with the Scan Interface in FW427IPMR-ACTA?
The Scan Interface in FW427IPMR-ACTA supports resistive sensors (e.g., strain gauges, thermistors), inductive LC sensors (e.g., turbine flow sensors), and GMR sensors. It provides four excitation channels (SIFCH0–SIFCH3), internal comparator, 10-bit DAC (SIFDACOUT), and SIFCOM termination - all explicitly specified for FW427IPMR-ACTA in the SLAS383E datasheet Tables 1 and 6.1.
What is the wake-up time from LPM4 for FW427IPMR-ACTA?
FW427IPMR-ACTA wakes up from LPM4 in less than 6 µs, as measured from interrupt assertion to first instruction execution. This specification is guaranteed across voltage (1.8–3.6 V) and temperature (–40°C to 85°C) ranges per SLAS383E Section 1.1 and Electrical Characteristics Table 6.1. The FLL+ DCO stabilization time is included in this figure.
Is FW427IPMR-ACTA pin-compatible with other MSP430FW42x devices?
Yes, FW427IPMR-ACTA shares identical 64-pin QFP package, pinout, and peripheral mapping with MSP430FW423, FW425, FW428, and FW429 - confirmed in SLAS383E Table 1 and Pin Diagrams. All variants use the same terminal functions (e.g., P6.0 = SIFCH0, P2.6 = CAOUT/S19), enabling drop-in replacement where memory requirements align.
FW427IPMR-ACTA 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
- Core Size:
- 16-Bit
- Speed:
- 8MHz
- Connectivity:
- -
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 48
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
FW427IPMR-ACTA FAQ
1.How can I place an order for FW427IPMR-ACTA through Aetrix?
Please submit a Request for Quotation (RFQ) for FW427IPMR-ACTA 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 FW427IPMR-ACTA reliable?
The price and inventory of FW427IPMR-ACTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FW427IPMR-ACTA is usually 5 days.
3.What payment methods are accepted for FW427IPMR-ACTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FW427IPMR-ACTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FW427IPMR-ACTA?
FW427IPMR-ACTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FW427IPMR-ACTA 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 FW427IPMR-ACTA?
For technical support, including FW427IPMR-ACTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FW427IPMR-ACTA requirements.
6.How does Aetrix verify that FW427IPMR-ACTA is sourced from the original manufacturer or authorized distributors?
All FW427IPMR-ACTA 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 FW427IPMR-ACTA meets industry standards.
7.What is the process for return or replacement of FW427IPMR-ACTA?
All FW427IPMR-ACTA units undergo pre-shipment inspection (PSI). If there is an issue with FW427IPMR-ACTA, 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 FW427IPMR-ACTA part is unused and in its original packaging.
Return procedure for FW427IPMR-ACTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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