My Inquiry
My Account
Texas Instruments MSP430FW428IPMR
- Part No.:
- MSP430FW428IPMR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MSP430FW428IPMR.pdf
- Description:
- IC MCU 16BIT 48KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,014
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSP430FW428IPMR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller with 48KB flash, 2KB RAM, integrated 96-segment LCD driver, scan interface for sensor measurement, and dual 16-bit timers (Timer0_A3 and Timer1_A5). It operates from 1.8 V to 3.6 V and targets battery-powered utility metering systems requiring long-term autonomous operation.
For engineers reviewing the MSP430FW428IPMR datasheet, MSP430FW428IPMR pinout, MSP430FW428IPMR application, or MSP430FW428IPMR equivalent, key selection considerations include its 64-pin QFP package, 48 I/O pins with LCD segment mapping, scan interface support for resistive/GMR sensors, and five low-power modes enabling sub-µA standby current.
Technical Context
The MSP430FW428IPMR implements a 16-bit RISC CPU with 125-ns instruction cycle time, constant generators, and seven addressing modes. Its FLL+ clock system locks the DCO to a 32.768-kHz crystal, generating ACLK, MCLK, and SMCLK while achieving wake-up from standby in under 6 µs.
It integrates dedicated peripherals including Comparator_A, Brownout Detector with programmable SVS level, Bootstrap Loader (BSL) accessible via UART on P1.0/P1.1, and a scan interface with four excitation channels (SIFCH0–SIFCH3), internal 10-bit DAC, and comparator output - all optimized for analog sensor signal acquisition in metering applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 48 KB main memory + 256 B information memory - supports in-system programming and BSL-based field updates without external voltage. |
| RAM | 2 KB - sufficient for real-time sensor data buffering, LCD frame storage, and firmware execution in metering firmware stacks. |
| Supply Voltage Range | 1.8 V to 3.6 V - enables direct operation from single Li-ion, two alkaline, or three NiMH cells without regulation. |
| Active Current | 200 µA at 1 MHz, 2.2 V - minimizes battery drain during active sensor sampling and computation cycles. |
| Standby Current | 0.7 µA - sustains real-time clock and interrupt readiness for years on coin-cell batteries. |
| LCD Drive | Up to 96 segments with 1/4-bias support - drives multi-digit utility meter displays without external drivers. |
| Scan Interface | 4-channel excitation + 10-bit DAC + comparator - enables high-precision background measurement of LC/resistive sensors (e.g., flow transducers). |
Pinout & Package
Package: 64-pin Quad Flat Pack (QFP), 10 mm × 10 mm, 0.5 mm pitch, surface-mount. Pinout validated per TI SLAS383E Rev. E (Dec. 2013) Table 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0.0 | GPIO / Timer0_A capture input / BSL TX | Primary serial programming transmit line for bootloader; also serves as timer input for pulse-width measurement. |
| P1.1/TA0.0/MCLK | GPIO / Timer0_A capture input / MCLK output | BSL receive line; MCLK output enables external clock monitoring or synchronization of companion ICs. |
| P2.6/CAOUT/S19 | GPIO / Comparator_A output / LCD segment 19 | Direct comparator result output usable for fast threshold detection; doubles as LCD drive segment when LCD module enabled. |
| P6.0–P6.3/SIFCH0–SIFCH3 | Scan IF excitation outputs | Four independent sensor excitation channels for driving GMR, LC, or resistive transducers in gas/water metering. |
| P6.4–P6.7/SIFCI0–SIFCI3 | Scan IF comparator inputs | Four differential signal inputs feeding the internal comparator for digitizing sensor responses with noise rejection. |
| RST/NMI | Reset / Non-maskable interrupt | Hardware reset initiation and fault-triggered NMI entry - critical for fail-safe metering behavior and brownout recovery. |
| TCK/TMS/TDI/TDO | JTAG test interface | Fully compliant IEEE 1149.1 boundary-scan and flash programming interface for production test and debug. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA off-mode (RAM retention) and 0.7 µA standby enable >10-year battery life in static meter deployments. |
| Integrated scan interface | Dedicated analog front-end with excitation, DAC, and comparator eliminates need for external sensor signal conditioning ICs. |
| 96-segment LCD controller | Hardware-accelerated display generation with automatic mux timing reduces CPU load and power consumption during display updates. |
| FLL+ frequency-locked loop | Stabilizes internal DCO to crystal reference in <6 µs - ensures rapid wake-up and precise timing for metering intervals. |
| Bootstrap Loader (BSL) | UART-based in-field firmware update capability using only P1.0/P1.1 - no JTAG hardware required for field upgrades. |
Applications
| Gas Metering | Water Metering |
|---|---|
Use Scenario: Measures volumetric flow via ultrasonic time-of-flight or turbine pulse counting in residential gas meters. IC Role / Device Role / Timing Role: Primary system controller executing metrology algorithms, managing LCD display, and handling tamper-detection interrupts. Use Value: Integrated scan interface directly interfaces with ultrasonic transducers; 0.7 µA standby extends battery life beyond 15 years. |
Use Scenario: Reads mechanical counter dials or magnetic encoders in cold-water meters deployed in unpowered environments. IC Role / Device Role / Timing Role: Sensor interface hub acquiring analog signals from Hall-effect or GMR position sensors and converting them to digital volume counts. Use Value: Four SIFCH channels support multi-sensor redundancy; 96-segment LCD displays usage history without external drivers. |
| Heat Metering | Industrial Flow Monitoring |
Use Scenario: Calculates thermal energy consumption by measuring inlet/outlet temperature differentials and flow rate in district heating systems. IC Role / Device Role / Timing Role: Dual-timer architecture runs independent 1-s temperature sampling (Timer1_A5) and 100-ms flow pulse accumulation (Timer0_A3) concurrently. Use Value: Comparator_A monitors thermistor bridges; SVS with programmable threshold ensures reliable operation across -25°C to +85°C industrial range. |
Use Scenario: Monitors liquid or gas flow in factory automation pipelines using LC resonant sensors for corrosion-resistant sensing. IC Role / Device Role / Timing Role: Scan interface performs background LC resonance tracking while CPU sleeps; wakes only on threshold breach. Use Value: Internal 10-bit DAC generates precise excitation waveforms; SIFVSS/SIFCOM pins provide dedicated analog ground isolation for noise immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power metering microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FW429IPMR | 60 KB flash, same 2 KB RAM, identical peripherals and pinout - higher code capacity for advanced metrology or communication stacks. | Preferred where firmware includes wireless protocol stacks (e.g., Wireless M-Bus) or cryptographic libraries requiring >48 KB code space. | Select MSP430FW429IPMR if future firmware expansion headroom is required; otherwise MSP430FW428IPMR offers optimal cost/performance balance. |
| MSP430FW427IPMR | 32 KB flash, 1 KB RAM, same peripheral set and 64-pin QFP package - reduced memory but identical scan interface and LCD capabilities. | Suitable for simpler metering applications with fixed-function firmware and minimal display content (e.g., basic water meters with 4-digit LCD). | Choose MSP430FW427IPMR for cost-sensitive, high-volume deployments where 32 KB flash suffices and BOM cost reduction is prioritized. |
Compared with MSP430FW429IPMR and MSP430FW427IPMR, the MSP430FW428IPMR delivers the optimal trade-off between flash capacity (48 KB) and unit cost for mid-tier utility meters requiring robust sensor interfacing, full-featured LCD display, and field-upgradable firmware - without over-provisioning memory or sacrificing peripheral functionality.
Availability
MSP430FW428IPMR is available at Aetrix Electronics and suitable for gas metering, water metering, and heat metering applications requiring stable component supply, long-lifecycle assurance, and traceable sourcing for utility-grade certification.
Supply support for MSP430FW428IPMR 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-based measurement systems, integrating scan interface, LCD driver, and precision analog peripherals into a single chip to eliminate external components and reduce system-level power.
FAQ
What is the maximum LCD segment count supported by the MSP430FW428IPMR?
The MSP430FW428IPMR supports up to 96 LCD segments with 1/2- or 1/4-bias configurations. This capability is implemented in hardware and requires no CPU intervention once initialized - the LCD module autonomously refreshes the display using Basic Timer1, freeing the CPU for metrology tasks. The MSP430FW428IPMR's COM0–COM3 pins and 48 I/O lines mapped to segment outputs enable direct drive of multi-digit utility meter displays without external drivers.
Does the MSP430FW428IPMR support in-system programming without external hardware?
Yes, the MSP430FW428IPMR includes an integrated Bootstrap Loader (BSL) that enables UART-based in-system programming using only the P1.0 (TX) and P1.1 (RX) pins. No external JTAG emulator or programming voltage is required. The BSL is protected by a user-configurable password stored in information memory, and it supports flash erasure, programming, and verification - making it ideal for field firmware updates in deployed meters.
How does the scan interface in the MSP430FW428IPMR differ from standard ADC peripherals?
The MSP430FW428IPMR scan interface is a purpose-built analog front-end for resistive and LC sensors - not a general-purpose ADC. It includes four programmable excitation channels (SIFCH0–SIFCH3), a 10-bit DAC for precise waveform generation, dedicated comparator inputs (SIFCI0–SIFCI3), and internal signal routing to support background sensor measurement while the CPU remains in LPM4. Unlike ADCs, it performs continuous sensor interrogation without CPU polling, reducing power and latency in metering applications.
What low-power modes are available on the MSP430FW428IPMR and what is the lowest achievable current?
The MSP430FW428IPMR offers six operating modes: Active Mode and five software-selectable low-power modes (LPM0–LPM4). In LPM4 (full oscillator stop), current drops to 0.1 µA with RAM retention - sufficient to maintain metrology state and wake on external interrupt or RTC alarm. Wake-up from LPM4 to Active Mode takes less than 6 µs due to the FLL+'s fast DCO stabilization, enabling rapid response to flow pulses or tamper events.
Is the MSP430FW428IPMR pin-compatible with other devices in the MSP430FW42x family?
Yes, the MSP430FW428IPMR is fully pin-compatible with MSP430FW423IPMR, MSP430FW425IPMR, MSP430FW427IPMR, and MSP430FW429IPMR in the 64-pin QFP package. All share identical pin functions, electrical characteristics, and peripheral mappings - allowing hardware reuse across metering tiers. Firmware portability is further ensured by identical memory maps and register layouts, simplifying migration between flash sizes.
MSP430FW428IPMR 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:
- -
- Peripherals:
- Brown-out Detect/Reset, LCD, POR, PWM, WDT
- Number of I/O:
- 48
- Program Memory Size:
- 48KB (48K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K 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:
MSP430FW428IPMR FAQ
1.How can I place an order for MSP430FW428IPMR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FW428IPMR 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 MSP430FW428IPMR reliable?
The price and inventory of MSP430FW428IPMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FW428IPMR is usually 5 days.
3.What payment methods are accepted for MSP430FW428IPMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FW428IPMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FW428IPMR?
MSP430FW428IPMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FW428IPMR 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 MSP430FW428IPMR?
For technical support, including MSP430FW428IPMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FW428IPMR requirements.
6.How does Aetrix verify that MSP430FW428IPMR is sourced from the original manufacturer or authorized distributors?
All MSP430FW428IPMR 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 MSP430FW428IPMR meets industry standards.
7.What is the process for return or replacement of MSP430FW428IPMR?
All MSP430FW428IPMR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FW428IPMR, 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 MSP430FW428IPMR part is unused and in its original packaging.
Return procedure for MSP430FW428IPMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430FW428IPMR 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…
