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Texas Instruments MSP430FE425IPMR
- Part No.:
- MSP430FE425IPMR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MSP430FE425IPMR.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,880
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Product details
Overview
MSP430FE425IPMR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller designed for single-phase energy metering applications. It integrates three independent 16-bit sigma-delta ADCs, an embedded signal processor (ESP430CE1), 16KB+256B Flash/512B RAM, 128-segment LCD driver, and UART/SPI interface - all in a 64-pin LQFP package. It operates from 2.7 V to 3.6 V and supports tamper-resistant 2-wire and 3-wire meter designs.
For engineers reviewing the MSP430FE425IPMR datasheet, MSP430FE425IPMR pinout, MSP430FE425IPMR application, or MSP430FE425IPMR equivalent, key selection criteria include its integrated ESP430CE1 analog front end, ultra-low standby current (1.6 µA), 6 µs wake-up time, FLL+ frequency-locked loop, and dedicated energy measurement accuracy specifications per IEC 62053-21/22.
Technical Context
The MSP430FE425IPMR implements a 16-bit RISC CPU with constant generators and five low-power modes optimized for battery-backed or long-life metering systems. Its core timing architecture combines a digitally controlled oscillator (DCO) with FLL+ for stable MCLK generation up to 8.4 MHz across supply voltages from 2.7 V to 3.6 V.
Signal processing is handled by the ESP430CE1 subsystem, which includes three independent SD16 sigma-delta ADCs with programmable gain (1–32×), built-in voltage reference, temperature sensor, and active energy calculation engine compliant with utility-grade metering standards. All ADC inputs (I1±, I2±, V1±) are routed directly to dedicated analog pins on the 64-pin LQFP package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash / RAM | 16 KB + 256 B Flash / 512 B RAM - sufficient for full meter firmware including calibration tables and communication stacks |
| Supply Voltage | 2.7 V to 3.6 V - supports direct connection to standard 3.3 V meter power rails without regulation overhead |
| Active Current | 400 µA at 1 MHz, 3 V - enables continuous real-time energy computation with minimal battery drain |
| Standby Current | 1.6 µA at 25°C - allows multi-year operation on coin-cell backup during power outages |
| Wake-up Time | < 6 µs from LPM3 - ensures rapid response to tamper events or pulse interrupts without missing critical samples |
| LCD Drive | 128 segments with 4-backplane support - drives full-feature numeric + symbol displays common in Class 1 and Class 2 meters |
| ADC Resolution | 16-bit sigma-delta (SD16) with 3 independent channels - provides simultaneous current/voltage sampling required for accurate watt-hour calculation |
Pinout & Package
Package: 64-pin LQFP (10 mm × 10 mm), PM variant, RoHS-compliant, surface-mount. Thermal resistance RθJA = 55.7°C/W under natural convection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| I1+, I1− | SD16 Channel 0 differential input | Dedicated analog inputs for first current transformer secondary - routed internally to ESP430CE1 with no software muxing |
| I2+, I2− | SD16 Channel 1 differential input | Dedicated analog inputs for second current path (e.g., neutral or auxiliary CT) - isolated from other channels |
| V1+, V1− | SD16 Channel 2 differential input | Dedicated analog inputs for voltage sensing - supports direct connection to resistive divider networks up to 250 V RMS |
| P1.5/TACLK/ACLK/S28 | Timer & clock multiplexed pin | Provides external TACLK source for precise ADC sampling synchronization or outputs ACLK for external logic timing |
| S0–S31, COM0–COM3 | LCD segment/backplane outputs | Direct drive capability for 128-segment display without external bias circuitry - reduces BOM count and layout complexity |
| R03–R33 | Analog LCD voltage level inputs | Accept external LCD bias voltages (V1–V5) to configure contrast and drive strength for wide-temperature operation |
Key Features
| Feature | Design Value |
|---|---|
| Embedded Signal Processor (ESP430CE1) | Hardware-accelerated active energy calculation engine compliant with IEC 62053-21/22 - eliminates need for external DSP or complex firmware math |
| FLL+ Frequency-Locked Loop | Stabilizes DCO output to ±1% over voltage/temperature - enables accurate time-based metering (e.g., demand registers) without crystal |
| Three Independent SD16 ADCs | Simultaneous 16-bit sampling of I1, I2, and V1 with programmable gain (1–32×) and internal reference - supports Class 1 accuracy down to 0.1% error |
| Integrated LCD Driver | Drives 128 segments with 4 backplanes using internal resistor ladder - eliminates external LCD bias IC and saves PCB area |
| Ultra-Low-Power Modes | Five configurable low-power modes including LPM4 (0.1 µA RAM retention) - extends battery life in non-volatile data logging and tamper detection |
Applications
| 2-Wire Single-Phase Meter | 3-Wire Single-Phase Meter |
|---|---|
|
Use Scenario: Residential electricity meter measuring line-to-neutral load with single current path and voltage reference. IC Role / Device Role / Timing Role: Primary metrology controller executing real-time watt-hour integration, LCD update, and pulse output generation. Use Value: ESP430CE1 delivers Class 1 accuracy (IEC 62053-21) without external calibration components, reducing test time and component cost. |
Use Scenario: Tamper-resistant meter with separate phase and neutral current monitoring for leakage detection. IC Role / Device Role / Timing Role: Dual-current-channel acquisition and differential energy computation engine with secure boot and code protection. Use Value: Independent I1± and I2± inputs enable real-time neutral current analysis - critical for detecting bypass or ground-loop tampering. |
| Tamper-Resistant Meter | Smart Energy Monitor |
|
Use Scenario: Utility-grade meter with magnetic, reverse-connection, and power-loss tamper detection. IC Role / Device Role / Timing Role: System-on-chip integrating metrology, secure bootloader (BSL), SVS brownout monitor, and real-time interrupt response. Use Value: Sub-6 µs wake-up from LPM3 enables immediate capture of tamper pulses - meeting ANSI C12.20 and EN 50470-3 response requirements. |
Use Scenario: Consumer-facing energy monitor displaying real-time kW, kWh, and cost via LCD and serial interface. IC Role / Device Role / Timing Role: Standalone metering node with UART communication to gateway and local LCD visualization. Use Value: Integrated 128-segment LCD driver and USART0 eliminate external display controllers and level shifters - simplifying certification and lowering BOM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-phase energy metering applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FE427IPM | 32 KB Flash / 1 KB RAM; identical peripherals and pinout | Supports larger firmware (e.g., DLMS/COSEM stack, OTA updates) without memory constraints | Select when future firmware expansion or advanced communication protocols are required. |
| MSP430FE423IPM | 8 KB Flash / 256 B RAM; same ESP430CE1, ADC, LCD, and power specs | Suitable for basic pulse-output meters with minimal UI or communication needs | Select for cost-sensitive Class 2 meters where feature set fits within smaller memory footprint. |
Compared with MSP430FE425IPMR, the FE427IPM offers headroom for protocol stacks and diagnostics, while the FE423IPM reduces cost for entry-level meters - all share identical metrology accuracy, pin compatibility, and LQFP-64 packaging.
Availability
MSP430FE425IPMR is available at Aetrix Electronics and suitable for 2-wire metering, 3-wire metering, and tamper-resistant energy monitoring applications requiring stable component supply, long-term lifecycle assurance, and TI-qualified metrology performance.
Supply support for MSP430FE425IPMR 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 high-reliability solutions for industrial, automotive, and energy infrastructure markets.
The MSP430FE42x product line was engineered specifically for utility-grade single-phase energy metering - integrating metrology-grade ADCs, signal processing, and ultra-low-power operation into a single chip to replace multi-component meter designs.
FAQ
What is the maximum operating frequency of the MSP430FE425IPMR?
The MSP430FE425IPMR supports a maximum system clock (MCLK) frequency of 8.4 MHz at 3.6 V, generated by the FLL+ locked to the internal DCO. This frequency is sufficient for real-time active energy calculation across all three SD16 ADC channels while maintaining sub-1% timing error over temperature and voltage variation.
Does the MSP430FE425IPMR include hardware-based energy calculation?
Yes, the MSP430FE425IPMR includes the ESP430CE1 embedded signal processor, which performs hardware-accelerated active energy (watt-hour) computation using inputs from its three independent 16-bit sigma-delta ADCs. This eliminates the need for software-based floating-point math and ensures deterministic, repeatable results compliant with IEC 62053-21.
What LCD configuration does the MSP430FE425IPMR support?
The MSP430FE425IPMR integrates a 128-segment LCD driver with four common (COM0–COM3) and 32 segment (S0–S31) outputs, supporting static, 2-mux, 3-mux, and 4-mux displays. It accepts external bias voltages (R03–R33) to configure contrast and drive strength across –40°C to +85°C ambient conditions.
Can the MSP430FE425IPMR operate without an external crystal?
Yes, the MSP430FE425IPMR can operate using its internal digitally controlled oscillator (DCO) stabilized by the FLL+, eliminating the need for an external crystal in applications where absolute timekeeping accuracy is not required. For RTC or precise time-based billing, a 32.768 kHz watch crystal on XIN/XOUT is supported.
What are the key power modes and their typical current consumption?
The MSP430FE425IPMR offers five low-power modes: Active Mode (400 µA @ 1 MHz, 3 V), LPM0/LPM1 (130 µA), LPM2 (10–22 µA), LPM3 (1.6 µA @ 25°C), and LPM4 (0.1 µA RAM retention). These enable aggressive power gating in metering applications - for example, LPM3 maintains RTC and LCD while consuming less than 2 µA.
MSP430FE425IPMR 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:
- 8.4MHz
- Connectivity:
- SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, LCD, POR, PWM, WDT
- Number of I/O:
- 14
- 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:
- A/D 3x16b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FE425IPMR FAQ
1.How can I place an order for MSP430FE425IPMR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FE425IPMR 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 MSP430FE425IPMR reliable?
The price and inventory of MSP430FE425IPMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FE425IPMR is usually 5 days.
3.What payment methods are accepted for MSP430FE425IPMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FE425IPMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FE425IPMR?
MSP430FE425IPMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FE425IPMR 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 MSP430FE425IPMR?
For technical support, including MSP430FE425IPMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FE425IPMR requirements.
6.How does Aetrix verify that MSP430FE425IPMR is sourced from the original manufacturer or authorized distributors?
All MSP430FE425IPMR 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 MSP430FE425IPMR meets industry standards.
7.What is the process for return or replacement of MSP430FE425IPMR?
All MSP430FE425IPMR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FE425IPMR, 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 MSP430FE425IPMR part is unused and in its original packaging.
Return procedure for MSP430FE425IPMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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