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Texas Instruments MSP430FE4252IPMR
- Part No.:
- MSP430FE4252IPMR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MSP430FE4252IPMR.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,664
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Product details
Overview
MSP430FE4252IPMR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller optimized for single-phase energy metering, featuring 16KB+256B Flash, 512B RAM, dual 16-bit sigma-delta ADCs (SD16), integrated ESP430CE1B signal processor, and 128-segment LCD driver. It operates from 2.7 V to 3.6 V and supports 2-wire/3-wire metering topologies with on-chip temperature sensing.
For engineers reviewing the MSP430FE4252IPMR datasheet, MSP430FE4252IPMR pinout, MSP430FE4252IPMR application, or MSP430FE4252IPMR equivalent, key selection criteria include its embedded energy calculation engine, low-power operation (0.1 µA in off mode), 64-pin QFP package with dedicated analog front-end pins (I1+/I1−, V1+/V1−), and hardware-accelerated metering functions compliant with IEC 62053 standards.
Technical Context
The MSP430FE4252IPMR integrates the ESP430CE1B module - a dedicated hardware signal processor with two independent 16-bit sigma-delta ADCs, multiplier, and firmware-calibratable energy computation engine for active/reactive power, RMS voltage/current, and power factor. Its FLL+ clock system locks DCO to 32.768 kHz crystal input, enabling stable 8 MHz MCLK generation with <6 µs wake-up from LPM4.
Digital peripherals include Timer_A3 with three capture/compare registers, USART0 supporting UART/SPI, Brownout Detector with programmable SVS threshold, and 14 GPIO pins (P1.0–P1.7, P2.0–P2.5) - all mapped to specific metering and LCD drive functions. The device uses segmented memory architecture with boot loader (BSL) accessible via P1.0/P1.1 UART interface.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125-ns instruction cycle; constant generators enable high code efficiency for metering firmware. |
| Memory | 16KB + 256B Flash (main + info memory), 512B RAM; supports in-system programming and BSL-based field updates. |
| Power Consumption | 0.1 µA in off mode (RAM retention); 1.6 µA in standby; 400 µA at 1 MHz/3.0 V active - enables >10-year battery life in portable meters. |
| Analog Front-End | Dual 16-bit SD16 converters with internal reference; supports simultaneous sampling of current (I1+/I1−) and voltage (V1+/V1−) channels for metrology-grade accuracy. |
| LCD Driver | Integrated 128-segment driver with 4-MUX support; eliminates external LCD controller and reduces BOM cost in display-enabled meters. |
| Clock System | FLL+ with 32.768 kHz crystal input; generates stable MCLK/SMCLK/ACLK; ACLK output configurable as /1, /2, /4, or /8 divider for precise timing control. |
| Operating Temperature | −40°C to +85°C industrial grade; qualified for deployment in outdoor electricity meter enclosures. |
Pinout & Package
Package: 64-pin Plastic Quad Flat Pack (QFP), PM suffix, RoHS-compliant, 10 mm × 10 mm body, 0.5 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| I1+, I1− | Analog inputs for SD16 Channel 0 | Direct connection to current-sensing shunt or CT secondary; differential pair referenced to AVSS for noise immunity in high-EMI meter environments. |
| V1+, V1− | Analog inputs for SD16 Channel 1 | Direct interface to voltage divider network; enables simultaneous voltage/current sampling required for true energy calculation per IEC 62053-21. |
| P1.0/TA0, P1.1/TA0/MCLK | BSL UART interface + Timer_A0 + MCLK output | Enables factory and field firmware loading without JTAG; MCLK output allows external synchronization of auxiliary circuitry. |
| S0–S31, COM0–COM3 | LCD segment/common outputs | Drives up to 128 segments in 4-MUX configuration; eliminates need for external LCD bias generator or driver IC. |
| RST/NMI, TCK, TMS, TDI/TCLK, TDO/TDI | JTAG debug/test interface | Full boundary-scan and flash programming capability; supports production test and post-deployment diagnostics. |
| AVCC, AVSS, DVCC, DVSS | Analog/digital supply rails | Separate analog/digital power domains reduce coupling noise; AVCC must ramp after DVCC to prevent latch-up during power-up sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| ESP430CE1B Embedded Signal Processor | Hardware-accelerated single-phase energy computation engine that autonomously calculates Wh, VARh, PF, and RMS values - offloading CPU and ensuring deterministic metrology timing. |
| Ultra-Low-Power Operation | Five software-selectable low-power modes including LPM4 (0.1 µA), enabling multi-year battery operation in AMI endpoint meters without compromising measurement integrity. |
| Integrated Analog Front-End | Dual 16-bit sigma-delta ADCs with programmable gain, offset calibration, and built-in temperature sensor - eliminates external signal conditioning components for Class 0.5/1.0 meter designs. |
| On-Chip LCD Controller | 128-segment drive with 1/4 bias support and automatic refresh - reduces bill-of-materials and PCB area in display-integrated utility meters. |
| Serial Communication Interface | USART0 configurable as UART (for HART/modem) or SPI (for secure MCU-to-metering ASIC communication), with double-buffered TX/RX for glitch-free data transfer. |
| Supply Monitoring & Protection | Programmable SVS with selectable trip level and brownout detection - ensures reliable reset behavior during grid voltage sags common in distribution networks. |
Applications
| Smart Electricity Meter | Prepayment Energy Meter |
|---|---|
Use Scenario: Residential or commercial meter measuring active energy consumption under fluctuating grid conditions (2-wire or 3-wire configurations). IC Role / Device Role / Timing Role: Primary metrology controller executing real-time energy accumulation, tariff switching, and LCD display update at 1-second intervals. Use Value: ESP430CE1B delivers certified Class 0.5 accuracy without external DSP; integrated SD16 ADCs eliminate anti-aliasing filter components and reduce calibration effort. |
Use Scenario: Pay-as-you-go meter requiring secure credit validation, tamper detection, and local display of remaining balance. IC Role / Device Role / Timing Role: Secure host controller managing EEPROM-based credit storage, keypad/LCD interaction, and encrypted communication with top-up tokens. Use Value: On-chip BSL and flash protection fuse enable secure firmware updates; low-power sleep modes extend battery life between top-ups. |
| Portable Power Quality Analyzer | Industrial Sub-Metering Module |
Use Scenario: Handheld tool capturing voltage sag/swell events, harmonics, and RMS transients in commercial facilities. IC Role / Device Role / Timing Role: High-precision sampling controller synchronizing dual SD16 ADCs at 4–8 kSPS with timestamped event logging to Flash. Use Value: Simultaneous I/V sampling with <10 ppm channel matching enables accurate THD and flicker measurement per IEC 61000-4-30. |
Use Scenario: DIN-rail mounted sub-meter monitoring HVAC, lighting, or machinery loads in factories or data centers. IC Role / Device Role / Timing Role: Standalone data logger aggregating 15-minute energy totals and communicating via RS-485 UART to building management system. Use Value: Integrated UART with hardware flow control and robust ESD protection (±2 kV HBM) ensures reliable operation in electrically noisy industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar energy metering microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FE4272IPMR | 32KB Flash, 1KB RAM, same peripherals and pinout - higher memory for advanced tariff logic or DLMS/COSEM stack implementation. | Required when full DLMS/COSEM protocol stack or multi-tariff billing with historical load profiling is needed. | Select MSP430FE4272IPMR if firmware exceeds 16KB or requires extended data logging buffers. |
| MSP430F6722AIPZ | 64-pin QFN, 32KB Flash, enhanced SD24 ADC (24-bit), no integrated ESP430CE1B - requires external firmware-based metrology processing. | Used where higher resolution (24-bit) is mandated for Class 0.2 meters or where flexible algorithm updates are prioritized over hardware acceleration. | Choose MSP430F6722AIPZ only when 24-bit ADC resolution is mandatory and software-defined metrology is acceptable. |
Compared with MSP430FE4252IPMR, the MSP430FE4272IPMR offers scalable memory while retaining identical metrology hardware and pin compatibility; the MSP430F6722AIPZ trades integrated signal processing for higher-resolution ADCs and modern packaging but increases firmware development complexity and real-time determinism risk.
Availability
MSP430FE4252IPMR is available at Aetrix Electronics and suitable for smart electricity metering, prepayment energy metering, and portable power quality analyzers requiring stable component supply across multi-year production cycles.
Supply support for MSP430FE4252IPMR 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 digital signal processing technologies, with decades of expertise in precision metrology and low-power design.
The MSP430FE42x2 product line was engineered specifically for cost-sensitive, battery-operated single-phase energy meters - integrating analog front-end, signal processing, and display drivers into one die to minimize system-level BOM and certification effort.
FAQ
What is the primary function of the ESP430CE1B module inside the MSP430FE4252IPMR?
The ESP430CE1B module in the MSP430FE4252IPMR is a dedicated hardware signal processor that performs real-time single-phase energy calculations-including active/reactive energy (Wh/VARh), RMS voltage/current, and power factor-using inputs from its dual 16-bit sigma-delta ADCs. It operates autonomously from the main CPU, ensuring deterministic metrology timing and reducing firmware overhead. This hardware acceleration is essential for meeting IEC 62053-21 accuracy requirements without external DSP.
Does the MSP430FE4252IPMR support both 2-wire and 3-wire metering configurations?
Yes, the MSP430FE4252IPMR explicitly supports both 2-wire (single-phase, two-element) and 3-wire (single-phase, three-wire) energy metering configurations. Its dual independent SD16 ADC channels (I1+/I1− and V1+/V1−) allow simultaneous sampling of current and voltage signals, and the ESP430CE1B firmware is calibrated to compute energy correctly under either topology. This flexibility enables one hardware design to serve multiple regional metering standards.
How does the MSP430FE4252IPMR achieve ultra-low-power operation in metering applications?
The MSP430FE4252IPMR achieves ultra-low-power operation through five software-selectable low-power modes (LPM0–LPM4), with LPM4 consuming only 0.1 µA while retaining RAM content. Its FLL+ clock system enables sub-6 µs wake-up from deep sleep, and the ESP430CE1B can perform periodic measurements autonomously - allowing the CPU to remain in LPM4 between integration intervals. This architecture supports >10-year battery life in sealed, maintenance-free meters.
Can the MSP430FE4252IPMR drive a 128-segment LCD without external components?
Yes, the MSP430FE4252IPMR integrates a full 128-segment LCD driver supporting static, 2-MUX, 3-MUX, and 4-MUX configurations. It provides dedicated segment (S0–S31) and common (COM0–COM3) outputs, along with analog LCD bias inputs (R03, R13, R23, R33), eliminating the need for external LCD bias generators or driver ICs. This integration reduces BOM count and PCB area in display-equipped meters.
What programming interfaces are supported by the MSP430FE4252IPMR?
The MSP430FE4252IPMR supports three programming interfaces: JTAG (via TCK/TMS/TDI/TDO pins) for full-debug and flash programming; Bootstrap Loader (BSL) via UART using P1.0 (TX) and P1.1 (RX) for field firmware updates; and in-system programming (ISP) via the CPU itself. All methods support flash write/erase operations, and BSL access is protected by a user-configurable password to prevent unauthorized firmware modification.
MSP430FE4252IPMR 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:
- 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 2x16b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FE4252IPMR FAQ
1.How can I place an order for MSP430FE4252IPMR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FE4252IPMR 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 MSP430FE4252IPMR reliable?
The price and inventory of MSP430FE4252IPMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FE4252IPMR is usually 5 days.
3.What payment methods are accepted for MSP430FE4252IPMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FE4252IPMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FE4252IPMR?
MSP430FE4252IPMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FE4252IPMR 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 MSP430FE4252IPMR?
For technical support, including MSP430FE4252IPMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FE4252IPMR requirements.
6.How does Aetrix verify that MSP430FE4252IPMR is sourced from the original manufacturer or authorized distributors?
All MSP430FE4252IPMR 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 MSP430FE4252IPMR meets industry standards.
7.What is the process for return or replacement of MSP430FE4252IPMR?
All MSP430FE4252IPMR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FE4252IPMR, 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 MSP430FE4252IPMR part is unused and in its original packaging.
Return procedure for MSP430FE4252IPMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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