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Texas Instruments MSP430FE427AIPMR
- Part No.:
- MSP430FE427AIPMR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MSP430FE427AIPMR.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,225
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Product details
Overview
MSP430FE427AIPMR from Texas Instruments is a 32KB Flash, 1KB RAM ultra-low-power mixed-signal microcontroller optimized for single-phase energy metering. It integrates three 16-bit sigma-delta ADCs, an embedded signal processor (ESP430CE1A), 128-segment LCD driver, and UART/SPI interface - all operating within 2.7–3.6 V supply and consuming only 400 μA active current at 1 MHz.
For engineers reviewing the MSP430FE427AIPMR datasheet, MSP430FE427AIPMR pinout, MSP430FE427AIPMR application, or MSP430FE427AIPMR equivalent, this device delivers calibrated energy computation, tamper-resistant metering support, and sub-6-μs wake-up from standby - critical for battery-backed utility meters and smart grid endpoints.
Technical Context
The MSP430FE427AIPMR implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling high code efficiency in metering firmware. Its FLL+ clock system locks the DCO to a 32.768-kHz crystal, generating stable MCLK/SMCLK/ACLK while supporting programmable ACLK division (1/2/4/8).
It embeds the ESP430CE1A hardware accelerator - a dedicated signal processing core with three independent SD16 converters - that autonomously computes real/reactive power, energy, and power factor from I1+/I1−, I2+/I2−, and V1+/V1− inputs, freeing the CPU for communication and display tasks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 32 KB main memory + 256 B information memory - sufficient for full metering firmware, calibration tables, and secure boot loader. |
| RAM | 1 KB - supports real-time accumulation buffers, LCD frame memory, and UART/SPI double-buffered I/O. |
| ADC Resolution | 16-bit sigma-delta with three independent channels - enables simultaneous current/voltage sampling for accurate 2-wire/3-wire metering. |
| LCD Drive | 128 segments with 1–4 multiplex support - drives standard utility meter displays without external drivers. |
| Power Modes | Five low-power modes including LPM4 (0.1 μA RAM retention) - extends battery life in non-interrupt-driven metering applications. |
| Wake-up Time | <6 μs from standby - ensures rapid response to tamper detection or pulse events without missing critical samples. |
| Operating Voltage | 2.7 V to 3.6 V - compatible with standard 3-V coin cells and regulated 3.3-V rails in metering PCBs. |
Pinout & Package
Package: 64-pin plastic QFP (PM), RoHS-compliant, 10 mm × 10 mm body, 0.5 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| I1+, I1− | Analog input pair | Direct connection to current sensor shunt or CT secondary - routed to SD16 Channel 0 for primary current measurement. |
| I2+, I2− | Analog input pair | Secondary current path input - assigned to SD16 Channel 1 for neutral or auxiliary current monitoring. |
| V1+, V1− | Analog input pair | Voltage sensing inputs - connected to SD16 Channel 2 for line voltage acquisition in 2-/3-wire configurations. |
| S0–S31, S24–S28 | LCD segment outputs | 32 dedicated segment drivers - combined with COM0–COM3, enable full 128-segment static/2M/3M/4M LCD drive. |
| COM0–COM3 | LCD common outputs | Four backplane outputs - support up to 4-mux LCDs; require external resistive divider for analog voltage levels (R03/R13/R23/R33). |
| P1.0/TA0, P1.1/TA0/MCLK | GPIO / Timer_A / BSL interface | P1.0 = BSL transmit; P1.1 = BSL receive & MCLK output - enables in-system flash programming via UART without external tools. |
| RST/NMI, TCK, TMS, TDI, TDO | JTAG debug interface | Fully compliant 5-pin JTAG chain - supports boundary scan, flash programming, and real-time debugging during meter development. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated ESP430CE1A | Dedicated hardware engine that computes kWh, kVARh, PF, and RMS values autonomously - eliminates need for floating-point libraries and reduces CPU load by >70%. |
| Ultra-low standby current | 1.6 μA in LPM3 - enables multi-year operation on CR2032 batteries when paired with periodic wake-up for pulse counting or IR communication. |
| Programmable SVS | Supply voltage supervisor with user-selectable trip level - prevents erratic behavior during brownout conditions common in unregulated meter power supplies. |
| On-chip LCD bias generation | Internal resistive divider (R03/R13/R23/R33) sets V1–V5 LCD voltage levels - removes need for external bias ICs and saves board space. |
| Bootstrap Loader (BSL) | UART-based flash programming with password protection - allows field firmware updates via optical port or RS-485 without JTAG hardware. |
Applications
| Smart Electricity Meter | Tamper-Resistant Utility Meter |
|---|---|
|
Use Scenario: Residential or commercial single-phase meter measuring active/reactive energy under fluctuating grid conditions. IC Role / Device Role / Timing Role: Primary metrology controller executing ESP430CE1A computations, managing LCD display, and handling HART/IR communication. Use Value: Delivers <±0.1% energy accuracy over temperature and time via factory-calibrated SD16 channels and integrated reference. |
Use Scenario: Meter deployed in environments where physical tampering (e.g., magnet, shorting, reverse polarity) must be detected and logged. IC Role / Device Role / Timing Role: Real-time anomaly detector using SVS, GPIO edge interrupts, and internal temperature sensor to trigger secure event logging. Use Value: Enables Class 0.5 compliance per IEC 62053-21 through hardware-accelerated diagnostics and non-volatile tamper-event storage. |
| Prepayment Energy Meter | Modular Smart Grid Endpoint |
|
Use Scenario: Pay-as-you-go meter requiring secure credit validation, local energy accounting, and LCD-based balance display. IC Role / Device Role / Timing Role: Secure host MCU running encrypted token validation, updating LCD segments, and managing EEPROM-backed credit ledger. Use Value: Combines flash security fuse, BSL password protection, and RAM retention in LPM4 to preserve balance state during power loss. |
Use Scenario: Field-deployed node aggregating consumption data from multiple sensors and relaying via PLC or RF mesh. IC Role / Device Role / Timing Role: Low-power data concentrator interfacing with external ADCs, SPI peripherals, and UART-based PLC modems. Use Value: Leverages USART0 dual-mode (UART/SPI), 14 GPIOs, and 6-μs wake-up to minimize duty cycle and extend node lifetime beyond 10 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar energy metering microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FE425AIPMR | 16 KB Flash, 512 B RAM, identical peripherals and pinout - lower memory capacity limits firmware feature set. | Suitable for basic metering without advanced tariff or communication stacks. | Select when firmware size <12 KB and no future feature expansion is planned. |
| MSP430FE423AIPMR | 8 KB Flash, 256 B RAM, same architecture - insufficient for full ESP430CE1A calibration tables and dual-protocol stacks. | Targeted at cost-sensitive, minimal-feature meters with fixed calibration. | Choose only for legacy designs or ultra-low-BOM-cost deployments with ≤6 KB firmware. |
Compared with MSP430FE425AIPMR and MSP430FE423AIPMR, the MSP430FE427AIPMR provides 2× and 4× more Flash respectively - enabling secure OTA updates, multi-tariff support, and extended diagnostic logging without external memory.
Availability
MSP430FE427AIPMR is available at Aetrix Electronics and suitable for smart electricity metering, tamper-resistant utility metering, and prepayment energy metering requiring stable component supply across long production lifecycles.
Supply support for MSP430FE427AIPMR 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 solutions, with decades of leadership in metering ICs and energy infrastructure.
The MSP430FE42xA product line was designed specifically for single-phase energy metering - integrating metrology-grade ADCs, signal processing acceleration, and LCD control into one ultra-low-power MCU package.
FAQ
What is the maximum LCD multiplex ratio supported by the MSP430FE427AIPMR?
The MSP430FE427AIPMR supports static, 2-mux, 3-mux, and 4-mux LCD configurations via its integrated LCD controller. With 4 common outputs (COM0–COM3) and 32 segment outputs (S0–S31 plus S24–S28), it drives up to 128 segments in 4-mux mode - matching standard utility meter displays without external bias generation.
Does the MSP430FE427AIPMR include hardware encryption or secure boot capabilities?
The MSP430FE427AIPMR does not include AES or PKI hardware accelerators. It provides software-managed security via programmable code protection using the security fuse, BSL password lock, and flash write-protection registers - sufficient for basic firmware integrity but requiring external co-processors for cryptographic key management.
Can the ESP430CE1A module operate independently while the CPU is in LPM4?
No. The ESP430CE1A module requires CPU initialization and configuration before autonomous operation, and its mailbox registers (MBIN0/MBOUT0) are only accessible when the CPU is active. While ESP430CE1A performs computations autonomously, the CPU must exit LPM4 to read results or update calibration parameters.
What are the absolute maximum ratings for AVCC and DVCC on the MSP430FE427AIPMR?
The absolute maximum rating for both AVCC and DVCC is −0.3 V to +4.1 V relative to DVSS/AVSS. Exceeding this range risks permanent damage. Per datasheet SLAS588, AVCC must not power up before DVCC to prevent latch-up in the analog front-end circuitry.
Is the MSP430FE427AIPMR pin-compatible with other devices in the MSP430FE42xA family?
Yes. The MSP430FE427AIPMR shares identical 64-pin QFP packaging, pin assignments, and peripheral mapping with MSP430FE423AIPMR and MSP430FE425AIPMR - enabling drop-in replacement in existing PCB layouts when upgrading Flash/RAM capacity.
MSP430FE427AIPMR 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:
- 32KB (32K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K 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:
MSP430FE427AIPMR FAQ
1.How can I place an order for MSP430FE427AIPMR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FE427AIPMR 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 MSP430FE427AIPMR reliable?
The price and inventory of MSP430FE427AIPMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FE427AIPMR is usually 5 days.
3.What payment methods are accepted for MSP430FE427AIPMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FE427AIPMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FE427AIPMR?
MSP430FE427AIPMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FE427AIPMR 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 MSP430FE427AIPMR?
For technical support, including MSP430FE427AIPMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FE427AIPMR requirements.
6.How does Aetrix verify that MSP430FE427AIPMR is sourced from the original manufacturer or authorized distributors?
All MSP430FE427AIPMR 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 MSP430FE427AIPMR meets industry standards.
7.What is the process for return or replacement of MSP430FE427AIPMR?
All MSP430FE427AIPMR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FE427AIPMR, 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 MSP430FE427AIPMR part is unused and in its original packaging.
Return procedure for MSP430FE427AIPMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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