My Inquiry
My Account
Texas Instruments MSP430FE423AIPM
- Part No.:
- MSP430FE423AIPM
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MSP430FE423AIPM.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,113
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSP430FE423AIPM from Texas Instruments is an ultra-low-power mixed-signal microcontroller designed for single-phase energy metering applications. It integrates a 16-bit RISC CPU, 8KB Flash + 256B RAM, three independent 16-bit sigma-delta ADCs (SD16), embedded signal processor ESP430CE1A, 128-segment LCD driver, and UART/SPI serial interface - all operating within 2.7–3.6 V supply range.
For engineers reviewing the MSP430FE423AIPM datasheet, MSP430FE423AIPM pinout, MSP430FE423AIPM application, or MSP430FE423AIPM equivalent, key selection criteria include its dedicated energy metering AFE, integrated ESP430CE1A computation engine, 64-pin QFP package with analog input pairs (I1+/I1−, I2+/I2−, V1+/V1−), and support for tamper-resistant 2-wire/3-wire meter implementations.
Technical Context
The MSP430FE423AIPM implements a hardware-accelerated energy measurement architecture centered on the ESP430CE1A module, which autonomously computes active energy, apparent energy, power factor, and RMS values using three independent SD16 converters. Its FLL+ clock system locks the DCO to a 32.768 kHz crystal, enabling sub-6 μs wake-up from LPM4 and stable timing for metrology-grade sampling.
It features dual-domain power management: AVCC/AVSS supplies the SD16, SVS, oscillator, and LCD resistive divider; DVCC/DVSS powers digital logic. The 16-bit Timer_A3 provides capture/compare for pulse counting and time-stamping, while the 14 GPIO pins (P1.0–P1.7, P2.0–P2.5) support meter control signals, tamper detection, and communication interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125-ns instruction cycle; constant generators and 16 general-purpose registers for optimized code density in meter firmware. |
| Memory | 8KB Flash + 256B RAM + 256B information memory; supports in-system programming via BSL using UART on P1.0/P1.1. |
| Energy Metrology Engine | ESP430CE1A module with three 16-bit sigma-delta ADCs; performs real-time active/apparent energy calculation without CPU intervention. |
| Power Consumption | Active mode: 400 μA @ 1 MHz / 3.0 V; LPM4 (off mode with RAM retention): 0.1 μA - enables >10-year battery life in portable meters. |
| LCD Support | Integrated driver for up to 128 segments with 1–4 multiplexing; outputs COM0–COM3 and S0–S31 for direct connection to segment-based meter displays. |
| Analog Inputs | Dedicated differential pairs: I1+/I1−, I2+/I2−, V1+/V1− - mapped to SD16 channels 0–2 for simultaneous current/voltage sampling in 2-/3-wire configurations. |
| Operating Voltage | 2.7 V to 3.6 V supply range; includes programmable brownout detector and supply voltage supervisor (SVS) with selectable threshold. |
Pinout & Package
Package: 64-pin Plastic Quad Flat Pack (QFP), surface-mount, JEDEC MS-026 compliant, 10 mm × 10 mm body, 0.5 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| I1+, I1− | Differential current input pair | Directly connected to SD16 Channel 0; used for primary current sensing in 2-wire/3-wire meter topologies. |
| I2+, I2− | Differential current input pair | Directly connected to SD16 Channel 1; supports secondary current path or neutral current monitoring. |
| V1+, V1− | Differential voltage input pair | Directly connected to SD16 Channel 2; measures line voltage for power factor and RMS calculations. |
| P1.0/TA0, P1.1/TA0/MCLK | Timer_A0 capture/compare & BSL interface | P1.0 = BSL transmit; P1.1 = BSL receive; both support TA0 timer functions for pulse accumulation or time-of-use metering. |
| S0–S31, COM0–COM3 | LCD segment/common outputs | Drive up to 128 segments in static/2M/3M/4M configuration; no external bias required for standard LCD modules. |
| RST/NMI, TCK, TMS, TDI/TCLK, TDO/TDI | JTAG debug and programming interface | Standard 5-pin JTAG for full-speed emulation, flash programming, and boundary scan testing per IEEE 1149.1. |
| AVCC, AVSS, DVCC, DVSS | Analog/digital power domains | Separate analog and digital supply rails prevent noise coupling into metrology ADCs; AVCC must ramp after DVCC. |
Key Features
| Feature | Design Value |
|---|---|
| Embedded Signal Processor ESP430CE1A | Hardware accelerator that computes active energy (Wh), apparent energy (VAh), power factor, and RMS voltage/current - freeing CPU for communication and display tasks. |
| Three Independent SD16 Converters | 16-bit sigma-delta ADCs with built-in PGA, reference, and digital filter; enable simultaneous sampling of two current paths and one voltage path at metrology-grade accuracy. |
| FLL+ Frequency-Locked Loop | Stabilizes internal DCO to crystal frequency (e.g., 32.768 kHz); achieves <6 μs wake-up from LPM4 and eliminates need for external high-frequency crystal. |
| 128-Segment LCD Driver | On-chip driver supports static, 2-, 3-, or 4-mux LCDs; reduces BOM count by eliminating external LCD bias IC and simplifies PCB layout for meter displays. |
| Ultra-Low-Power Operation | Five software-selectable low-power modes including LPM4 (0.1 μA RAM retention); extends battery life in AMR/AMI endpoint devices without compromising metrology performance. |
| Integrated Brownout & SVS | Programmable supply voltage supervisor detects undervoltage events and triggers reset or interrupt - critical for maintaining data integrity during power dips in utility environments. |
Applications
| Smart Electricity Meter | Tamper-Resistant Metering |
|---|---|
Use Scenario: Residential or commercial single-phase electricity meter with remote readout and time-of-use billing. IC Role / Device Role / Timing Role: Primary metrology controller executing ESP430CE1A computations, driving LCD display, and managing UART/RS-485 communication stack. Use Value: Eliminates external DSP or separate AFE, reducing total solution cost and board area while meeting IEC 62053-21 Class 1 accuracy requirements. |
Use Scenario: Utility-grade meter requiring detection of magnetic, neutral-disconnect, or reverse-connection tampering. IC Role / Device Role / Timing Role: Real-time analog input monitoring via SD16 channels and GPIO-based tamper switch inputs; executes anti-tamper algorithms in firmware. Use Value: On-chip SVS, multiple analog inputs, and fast wake-up enable immediate response to tamper events - supporting IEC 62055-41 compliance. |
| Portable Energy Analyzer | Prepayment Meter Controller |
Use Scenario: Handheld or clamp-on device measuring load profiles, harmonics, and power quality in field service. IC Role / Device Role / Timing Role: Standalone metrology engine capturing voltage/current waveforms and computing RMS, THD, and demand values. Use Value: Integrated SD16 converters and ESP430CE1A deliver lab-grade accuracy without external signal conditioning, enabling compact, battery-powered form factors. |
Use Scenario: Pay-as-you-go electricity meter with local credit storage, keypad interface, and LCD balance display. IC Role / Device Role / Timing Role: System-on-chip managing credit validation, LCD update, button scanning, EEPROM-backed ledger, and secure BSL firmware updates. Use Value: 8KB Flash and 256B RAM provide sufficient space for secure prepayment logic and encrypted transaction logs - certified for MID Annex C compliance. |
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 |
|---|---|---|---|
| MSP430FE425AIPM | 16KB Flash + 512B RAM; identical peripheral set and pinout; same 64-pin QFP package. | Supports larger firmware for advanced tariff schemes, DLMS/COSEM protocol stacks, or extended diagnostics. | Select when firmware size exceeds 8KB or additional RAM is needed for multi-protocol communication buffers. |
| MSP430FE427AIPM | 32KB Flash + 1KB RAM; same peripherals, pinout, and package; higher memory density for complex metering + connectivity stacks. | Enables integration of Zigbee, NB-IoT, or LoRaWAN modem firmware alongside metrology and security layers. | Choose for next-generation smart meters requiring OTA updates, cryptographic acceleration, or dual-band RF coexistence. |
Compared with MSP430FE425AIPM and MSP430FE427AIPM, the MSP430FE423AIPM delivers optimal cost-performance balance for basic Class 1 single-phase meters where firmware footprint remains under 7KB and RAM usage stays below 200B - preserving design simplicity and qualification effort.
Availability
MSP430FE423AIPM is available at Aetrix Electronics and suitable for smart electricity metering, tamper-resistant utility endpoints, and portable energy analyzers requiring stable component supply across long production lifecycles.
Supply support for MSP430FE423AIPM 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 connectivity technologies for industrial, automotive, and energy infrastructure markets.
The MSP430FE42xA series was engineered specifically for cost-sensitive, battery-operated single-phase energy meters - integrating metrology-grade analog front-end, computation engine, and display drivers into a single ultra-low-power MCU.
FAQ
What is the primary function of the ESP430CE1A module in the MSP430FE423AIPM?
The ESP430CE1A module in the MSP430FE423AIPM is a dedicated hardware signal processor that autonomously computes active energy (Wh), apparent energy (VAh), power factor, and RMS voltage/current using inputs from its three integrated 16-bit sigma-delta ADCs. It operates independently of the CPU, reducing firmware complexity and ensuring deterministic metrology performance in single-phase metering applications.
Does the MSP430FE423AIPM support UART and SPI communication simultaneously?
No - the MSP430FE423AIPM features a single USART0 peripheral that supports either asynchronous UART or synchronous SPI operation, selected in software. Both protocols share the same physical pins (P2.4/UTXD0 and P2.5/URXD0), and mode switching requires reconfiguration of U0CTL register bits; concurrent dual-mode operation is not supported.
How many analog input channels does the MSP430FE423AIPM provide for energy metering?
The MSP430FE423AIPM provides six dedicated analog input terminals - I1+, I1−, I2+, I2−, V1+, and V1− - configured as three differential pairs. These map directly to the three independent 16-bit sigma-delta ADCs (SD16) inside the ESP430CE1A module, enabling simultaneous sampling for 2-wire and 3-wire single-phase metering topologies.
What is the maximum LCD segment count supported by the MSP430FE423AIPM?
The MSP430FE423AIPM supports up to 128 LCD segments using its integrated driver, with configurable multiplexing (static, 2-MUX, 3-MUX, or 4-MUX). It provides 32 segment outputs (S0–S31) and 4 common outputs (COM0–COM3), allowing direct drive of standard meter LCD glass without external bias circuitry.
Can the MSP430FE423AIPM be programmed in-circuit without a JTAG debugger?
Yes - the MSP430FE423AIPM includes a factory-programmed Bootstrap Loader (BSL) accessible via UART using pins P1.0 (TX) and P1.1 (RX). This allows in-system flash programming without JTAG hardware, provided the BSL password is known and the device is not locked via the security fuse.
MSP430FE423AIPM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-LQFP
- Series:
- MSP430x4xx
- Packaging:
- Tray
- 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:
- 8KB (8K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 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:
MSP430FE423AIPM FAQ
1.How can I place an order for MSP430FE423AIPM through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FE423AIPM 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 MSP430FE423AIPM reliable?
The price and inventory of MSP430FE423AIPM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FE423AIPM is usually 5 days.
3.What payment methods are accepted for MSP430FE423AIPM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FE423AIPM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FE423AIPM?
MSP430FE423AIPM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FE423AIPM 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 MSP430FE423AIPM?
For technical support, including MSP430FE423AIPM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FE423AIPM requirements.
6.How does Aetrix verify that MSP430FE423AIPM is sourced from the original manufacturer or authorized distributors?
All MSP430FE423AIPM 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 MSP430FE423AIPM meets industry standards.
7.What is the process for return or replacement of MSP430FE423AIPM?
All MSP430FE423AIPM units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FE423AIPM, 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 MSP430FE423AIPM part is unused and in its original packaging.
Return procedure for MSP430FE423AIPM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430FE423AIPM Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
