My Inquiry
My Account
Texas Instruments MSP430FW423IPM
- Part No.:
- MSP430FW423IPM
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MSP430FW423IPM.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,401
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSP430FW423IPM from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 8KB flash, 256B RAM, integrated 96-segment LCD driver, scan interface for sensor measurement, and dual 16-bit timers-designed for battery-powered utility meters and analog/digital sensor systems operating from 1.8 V to 3.6 V.
For engineers reviewing the MSP430FW423IPM datasheet, MSP430FW423IPM pinout, MSP430FW423IPM application, or MSP430FW423IPM equivalent, key selection criteria include its 64-pin QFP package, sub-µA standby current (0.7 µA), <6 µs wake-up time, and dedicated scan interface for resistive/GMR sensor excitation and signal acquisition in metering applications.
Technical Context
The MSP430FW423IPM implements a 16-bit CPU with constant generators and seven addressing modes, enabling single-cycle register operations and high code efficiency. Its FLL+ clock system stabilizes the DCO to multiples of ACLK (32.768 kHz crystal), delivering MCLK up to 8 MHz with <6 µs active-mode wake-up.
It integrates Timer0_A3 (3 capture/compare registers) and Timer1_A5 (5 capture/compare registers), a comparator_A with internal reference, programmable SVS with brownout detection, and a scan interface supporting four LC/resistive sensor channels-including excitation outputs (SIFCH0–SIFCH3), comparator inputs (SIFCI0–SIFCI3), and a 10-bit DAC output (SIFDACOUT) on P6.6.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125-ns instruction cycle; enables deterministic real-time control in low-power sensor firmware. |
| Memory | 8KB flash + 256B RAM; sufficient for firmware with LCD UI, sensor calibration, and communication stacks in compact meter designs. |
| Supply Voltage | 1.8 V to 3.6 V; supports direct operation from single Li-ion or 3×AA alkaline cells without external regulators. |
| Low-Power Modes | Five software-selectable modes; LPM4 draws only 0.1 µA with RAM retention-enables >10-year battery life in static meter deployments. |
| LCD Drive | Up to 96 segments with 1–4 multiplex support; eliminates external LCD controller in water/gas/heat meter displays. |
| Scan Interface | Four-channel analog front-end with excitation outputs, comparator inputs, and 10-bit DAC; enables background volume measurement of mechanical sensors without CPU intervention. |
| Wake-Up Time | <6 µs from standby to active mode; ensures rapid response to tamper events or sensor thresholds in safety-critical metering. |
Pinout & Package
Package: 64-pin Quad Flat Pack (QFP), 10 mm × 10 mm, 0.5 mm pitch - compatible with standard surface-mount assembly and IPC-7351B footprint IPC-7351B QFP64_10x10_P0.5mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI | Reset / Nonmaskable Interrupt input | Hardware reset initiation and critical fault handling; tied to external pull-up for reliable power-on reset. |
| P1.0/TA0.0 | General I/O / Timer0_A CCI0A input | Primary BSL data transmit pin; also serves as capture input for low-jitter timing measurements. |
| P1.1/TA0.0/MCLK | General I/O / Timer0_A CCI0B input / MCLK output | BSL receive pin; MCLK output enables external clock monitoring or synchronization of auxiliary circuitry. |
| P2.6/CAOUT/S19 | Comparator_A output / LCD segment 19 | Direct comparator result routing to LCD or GPIO logic; supports threshold-driven display updates without CPU polling. |
| P6.0–P6.3 | SIFCH0–SIFCH3 | Dedicated sensor excitation outputs; drive GMR or LC resonant sensors with programmable duty cycle and amplitude. |
| P6.4–P6.7 | SIFCI0–SIFCI3 | Comparator inputs for sensor return signals; enable simultaneous multi-channel background scanning at 100+ Hz. |
| COM0–COM3 | LCD common outputs | Four independent backplane drivers; configure static, 2-MUX, 3-MUX, or 4-MUX LCDs up to 96 segments. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Scan Interface | Hardware-accelerated background measurement of up to four resistive or LC sensors-reduces CPU load by >90% vs. software-based sampling. |
| Ultra-Low Standby Current | 0.7 µA in LPM3 mode with ACLK active-enables decade-long battery operation in unattended utility meter installations. |
| On-Chip LCD Driver | Drives 96 segments with programmable bias and frame frequency; eliminates external LCD controller IC and associated BOM cost. |
| FLL+ Clock System | Digitally locks DCO to 32.768 kHz crystal; delivers stable 1–8 MHz MCLK without external capacitors or trimming. |
| Bootstrap Loader (BSL) | UART-based flash programming via P1.0/P1.1; enables field firmware updates without JTAG hardware or external programmers. |
Applications
| Water Metering | Gas Metering |
|---|---|
|
Use Scenario: Ultrasonic or mechanical flow sensor interfacing with pulse counting and temperature compensation in residential water meters. IC Role / Device Role / Timing Role: Primary system controller executing flow calculation, LCD display update, and battery voltage supervision using integrated comparator and timers. Use Value: Scan interface directly acquires sensor pulses while CPU remains in LPM3; extends battery life beyond 15 years with no external timing components required. |
Use Scenario: Diaphragm or turbine-based gas volume measurement with pressure/temperature correction in smart gas meters. IC Role / Device Role / Timing Role: Sensor signal conditioning, linearization, and secure data logging via integrated comparator, timers, and flash memory with BSL protection. Use Value: On-chip 10-bit DAC (P6.6) calibrates sensor offset; 8KB flash stores 12+ months of consumption history with tamper-proof write protection. |
| Heat Metering | Industrial Flow Monitoring |
|
Use Scenario: Dual-sensor thermal energy calculation (forward/reverse flow + ΔT) in district heating substations with RS-485 communication. IC Role / Device Role / Timing Role: Real-time analog acquisition of PT1000 temperature sensors and turbine pulse inputs using scan interface and Timer1_A5 capture units. Use Value: Simultaneous SIFCH0–SIFCH3 excitation enables synchronized multi-sensor readout; eliminates external op-amps and ADCs for analog front-end. |
Use Scenario: Compact flow transducer integration in industrial process controllers requiring local display, diagnostics, and Modbus RTU over UART. IC Role / Device Role / Timing Role: Embedded host processor managing sensor fusion, LCD UI rendering, and serial protocol stack with minimal external components. Use Value: Integrated 96-segment LCD driver supports custom icons and status indicators; reduces PCB area by 30% vs. discrete driver solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FW425IPM | 16KB flash, 512B RAM, same peripherals and pinout | Supports larger firmware with advanced communication stacks (e.g., DLMS/COSEM) and extended calibration tables | Select when firmware size exceeds 8KB or additional RAM is needed for real-time data buffering |
| MSP430FR4133IPM | Ferroelectric RAM (64KB FRAM), no flash wear-out, 1.8–3.6 V, 48-pin TSSOP | Superior write endurance and faster write speed; lacks scan interface and 96-segment LCD driver | Choose for high-write-cycle logging applications where scan interface is not required and LCD is external |
Compared with MSP430FW425IPM, the MSP430FW423IPM offers identical peripheral integration and ultra-low-power performance at lower memory cost-ideal for cost-sensitive, fixed-function meters. Versus MSP430FR4133IPM, it trades FRAM endurance for dedicated metering hardware (scan IF, LCD), making it superior for sensor-centric, display-integrated utility applications.
Availability
MSP430FW423IPM is available at Aetrix Electronics and suitable for water metering, gas metering, heat metering, and industrial flow monitoring requiring stable component supply across multi-year production cycles.
Supply support for MSP430FW423IPM 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 with over 50 years of innovation in low-power design.
The MSP430FW42x product line was engineered specifically for ultra-low-power utility metering and sensor system applications-integrating scan interface, LCD driver, and precision analog peripherals to minimize external components and extend battery life.
FAQ
What is the maximum operating frequency of the MSP430FW423IPM?
The MSP430FW423IPM supports a maximum MCLK frequency of 8 MHz, achieved via the FLL+ module locking the DCO to a 32.768 kHz watch crystal. This frequency is fully operational across the 1.8 V–3.6 V supply range and enables real-time sensor processing and LCD refresh without external clock sources. The MSP430FW423IPM achieves deterministic 125-ns instruction execution at this rate.
Does the MSP430FW423IPM support in-system programming without JTAG?
Yes, the MSP430FW423IPM includes a factory-programmed Bootstrap Loader (BSL) accessible via UART on P1.0 (TXD) and P1.1 (RXD). This allows full flash and RAM programming in-system using only a 3.3 V UART interface-no JTAG debugger or external programming voltage required. The BSL is protected by a user-configurable password stored in information memory.
How many LCD segments can the MSP430FW423IPM drive, and what multiplexing options are supported?
The MSP430FW423IPM drives up to 96 LCD segments using four common outputs (COM0–COM3) and configurable segment mapping. It supports static, 2-MUX, 3-MUX, and 4-MUX LCD configurations through dedicated control registers-enabling flexible display designs from simple numeric readouts to graphical icons in utility meters without external drivers.
What sensor types are compatible with the scan interface on the MSP430FW423IPM?
The MSP430FW423IPM scan interface supports resistive sensors (e.g., strain gauges, thermistors), inductive sensors (LC resonant circuits), and GMR sensors. It provides four excitation outputs (SIFCH0–SIFCH3), four comparator inputs (SIFCI0–SIFCI3), and a 10-bit DAC output (P6.6) for precise biasing-enabling direct connection of off-the-shelf metering transducers without signal-conditioning ICs.
What is the lowest power-consumption mode of the MSP430FW423IPM, and what functionality remains active?
The lowest power mode is LPM4 (Low-Power Mode 4), drawing just 0.1 µA while retaining full RAM content. In this mode, all clocks-including ACLK-are disabled, the crystal oscillator stops, and only the RST/NMI pin and external interrupt sources can wake the device. This mode is ideal for long-term storage or battery-backed sleep in utility meters awaiting tamper or flow events.
MSP430FW423IPM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-LQFP
- Series:
- MSP430x4xx
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 8MHz
- Connectivity:
- -
- Peripherals:
- Brown-out Detect/Reset, LCD, POR, PWM, WDT
- Number of I/O:
- 48
- 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:
- Slope A/D
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FW423IPM FAQ
1.How can I place an order for MSP430FW423IPM through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FW423IPM 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 MSP430FW423IPM reliable?
The price and inventory of MSP430FW423IPM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FW423IPM is usually 5 days.
3.What payment methods are accepted for MSP430FW423IPM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FW423IPM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FW423IPM?
MSP430FW423IPM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FW423IPM 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 MSP430FW423IPM?
For technical support, including MSP430FW423IPM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FW423IPM requirements.
6.How does Aetrix verify that MSP430FW423IPM is sourced from the original manufacturer or authorized distributors?
All MSP430FW423IPM 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 MSP430FW423IPM meets industry standards.
7.What is the process for return or replacement of MSP430FW423IPM?
All MSP430FW423IPM units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FW423IPM, 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 MSP430FW423IPM part is unused and in its original packaging.
Return procedure for MSP430FW423IPM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430FW423IPM 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…
