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Texas Instruments MSP430F439IPNR
- Part No.:
- MSP430F439IPNR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
MSP430F439IPNR.pdf
- Description:
- IC MCU 16BIT 60KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,696
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Product details
Overview
MSP430F439IPNR from Texas Instruments is an ultralow-power 16-bit RISC mixed-signal microcontroller featuring 60KB+256B flash, 2KB RAM, integrated 12-bit ADC, dual 16-bit timers (Timer_A3 and Timer_B3), USART with UART/SPI modes, on-chip LCD driver for up to 128 segments, and single-channel DMA - deployed in battery-powered sensor interfaces and portable metering systems.
For engineers reviewing the MSP430F439IPNR datasheet, MSP430F439IPNR pinout, MSP430F439IPNR application, or MSP430F439IPNR equivalent, key selection criteria include its 1.8–3.6 V supply range, <6 µs wake-up from LPM4, 300 µA active current at 1 MHz/2.2 V, integrated SVS/brownout detection, and QFP-80 package compatibility with legacy MSP430F43x designs.
Technical Context
The MSP430F439IPNR implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations and high code efficiency. Its FLL+ clock system supports ACLK (32.768 kHz crystal or HF source), MCLK (CPU clock), and SMCLK (peripheral clock), with DCO stabilization in under 6 µs.
Peripherals are memory-mapped and accessible via all CPU instructions. The device integrates a 12-bit SAR ADC with internal reference and autoscan, Comparator_A for slope ADC and voltage monitoring, and a dedicated LCD controller supporting static/2–4-MUX displays - all operating from a shared analog supply (AVCC/AVSS) and digitally isolated domains (DVCC1/DVCC2, DVSS1/DVSS2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and constant generators; enables efficient low-power firmware execution. |
| Flash / RAM | 60KB + 256B flash program memory and 2KB RAM; supports in-system programming and BSL-based field updates. |
| ADC Resolution | 12-bit SAR ADC with 12 input channels, internal reference, sample-and-hold, and autoscan; delivers <10 µs conversion time. |
| Power Modes | Five software-selectable low-power modes (LPM0–LPM4); LPM4 draws only 0.1 µA with RAM retention and <6 µs wake-up latency. |
| Operating Voltage | 1.8 V to 3.6 V supply range; enables direct integration with single-cell Li-ion, alkaline, or coin-cell power sources. |
| LCD Support | Integrated driver for up to 128 segments across static, 2-MUX, 3-MUX, or 4-MUX configurations; eliminates external display controllers. |
| Communication | One USART supporting asynchronous UART or synchronous SPI (3- or 4-pin); includes double-buffered TX/RX and programmable baud rate. |
Pinout & Package
Package: 80-pin plastic quad flat pack (QFP), PN variant, rated for –40°C to +85°C operation. Pinout validated per SLAS713 datasheet (June 2010), with dedicated analog/digital supply domains (AVCC/AVSS, DVCC1/DVCC2/DVSS1/DVSS2) and functional multiplexing across all 48 I/O pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI | Reset / Nonmaskable Interrupt Input | Active-low hardware reset and NMI trigger; required for JTAG programming and safe power-on initialization. |
| P1.0/TA0 | Timer_A Capture/Compare 0 / BSL Transmit | Primary BSL UART transmit pin; also serves as TA0 CCI0A input and Out0 output for PWM or timing functions. |
| P1.1/TA0/MCLK | Timer_A Capture/Compare 0 / MCLK Output | BSL UART receive pin and MCLK output (divided by 1/2/4/8); enables clock visibility during debug or system synchronization. |
| P2.4/UTXD0 | USART0 Transmit Data | Dedicated UART TX line; supports full-duplex serial communication without software bit-banging overhead. |
| P2.5/URXD0 | USART0 Receive Data | Dedicated UART RX line; compatible with standard TTL-level serial peripherals and host interfaces. |
| P5.4/COM3 | LCD Common Output 3 | One of four LCD backplane drivers (COM0–COM3); enables 4-MUX segment drive for compact alphanumeric displays. |
| VREF+ | ADC Reference Positive Output | Internal 1.5 V or 2.0 V reference output; supplies stable excitation for precision ratiometric measurements. |
| XIN / XOUT | Low-Frequency Crystal Oscillator I/O | Connects to 32.768 kHz watch crystal; provides accurate ACLK source for real-time clock and ultra-low-power timing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-Power Operation | 300 µA active @ 1 MHz/2.2 V; 1.1 µA standby; 0.1 µA LPM4 with RAM retention - extends battery life in portable instrumentation. |
| Integrated LCD Driver | Drives up to 128 segments in static/2–4-MUX modes using internal charge pump; eliminates external bias circuitry and reduces BOM count. |
| Single-Channel DMA | Transfers ADC12 results directly to RAM without CPU intervention; lowers active time and improves system-level energy efficiency. |
| Programmable Supply Monitoring | SVS with user-selectable trip level and SVM mode; enables reliable brownout recovery and battery-end-of-life detection. |
| On-Chip Bootloader | UART-based BSL with password protection; allows field firmware updates without JTAG hardware or external programming voltage. |
Applications
| Portable Handheld Meter | Thermostat Control Unit |
|---|---|
Use Scenario: Battery-powered multimeter measuring voltage, current, and resistance with LCD readout and auto-ranging. IC Role / Device Role / Timing Role: Main system controller managing analog front-end, ADC sampling, LCD refresh, and button interface. Use Value: 12-bit ADC with internal reference ensures measurement accuracy; 128-segment LCD driver supports multi-parameter display without external ICs. |
Use Scenario: Residential HVAC thermostat with temperature sensing, relay control, user keypad, and segmented LCD display. IC Role / Device Role / Timing Role: Central MCU handling sensor acquisition, PID computation, display update, and HVAC actuator timing. Use Value: Five low-power modes enable >1-year coin-cell operation; integrated comparator and SVS support precise thermal threshold detection and supply fail-safe behavior. |
| Digital Timer/Stopwatch | Remote Sensor Node |
Use Scenario: Precision digital timer with start/stop/lap functions, backlight control, and elapsed-time logging. IC Role / Device Role / Timing Role: Real-time counter and display manager using Basic Timer1 and LCD peripheral. Use Value: Sub-µs wake-up from LPM4 ensures immediate response to button press; integrated 32.768 kHz oscillator enables ±20 ppm RTC accuracy. |
Use Scenario: Wireless environmental sensor node (temperature/humidity) with periodic wake-up, measurement, and RF transmission. IC Role / Device Role / Timing Role: Sensor interface and data preprocessor; triggers ADC, stores readings in RAM, then signals RF transceiver. Use Value: Single-channel DMA offloads ADC-to-RAM transfers during sleep; 0.1 µA LPM4 minimizes quiescent current between measurement cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F438IPNR | 48KB+256B flash, identical peripherals and pinout; 12KB less program memory. | Suitable for cost-sensitive designs with smaller firmware footprints and no need for extended code space. | Select when application firmware fits within 48KB and BOM cost reduction is prioritized over future scalability. |
| MSP430F5328IPNR | 25MHz CPU, 16KB RAM, USB interface, enhanced DMA; incompatible pinout and higher VCC min (2.2 V). | Targets USB-connected devices requiring faster processing, larger buffers, or host connectivity - not drop-in replaceable. | Choose only for new designs needing USB or >16MHz throughput; requires PCB redesign and firmware porting. |
Compared with MSP430F439IPNR, MSP430F438IPNR offers identical functionality at lower flash capacity and cost, while MSP430F5328IPNR delivers higher performance and USB but mandates hardware and software rework - making MSP430F439IPNR optimal for legacy-compatible, ultra-low-power LCD-based metering.
Availability
MSP430F439IPNR is available at Aetrix Electronics and suitable for portable instrumentation, industrial thermostats, and battery-powered digital timers requiring stable component supply and long-term production continuity.
Supply support for MSP430F439IPNR 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 decades of microcontroller innovation.
The MSP430F43x product line was designed specifically for ultralow-power mixed-signal applications demanding extended battery life, integrated analog peripherals, and LCD support - targeting portable measurement and control systems.
FAQ
What is the maximum operating frequency of the MSP430F439IPNR?
The MSP430F439IPNR does not specify a maximum system clock frequency in its datasheet; instead, it guarantees reliable operation up to 8 MHz via its FLL+ module when driven by a 32.768 kHz crystal. The DCO stabilizes to programmable multiples of ACLK, and the CPU executes instructions at 125 ns per cycle - consistent with a nominal 8 MHz MCLK. Actual sustained frequency depends on supply voltage and temperature conditions per SLAS713 Section 5.1.
Does the MSP430F439IPNR support JTAG debugging?
Yes, the MSP430F439IPNR supports full-featured JTAG debugging via dedicated pins TCK, TMS, TDI/TCLK, and TDO/TDI on the 80-pin QFP package. These pins enable boundary-scan testing, flash programming, and real-time emulation using TI's MSP-FET or compatible tools. JTAG access remains available even when the BSL is locked, provided the fuse has not been blown.
How many LCD segments can the MSP430F439IPNR drive, and what mux configurations are supported?
The MSP430F439IPNR drives up to 128 segments using its integrated LCD controller, supporting static, 2-MUX, 3-MUX, and 4-MUX configurations. This is achieved through four common outputs (COM0–COM3) and 32 segment outputs (S0–S31 plus S10–S23), with additional segment lines mapped to P2.7, P2.6, and P3.7–P3.3. The controller operates from AVCC/AVSS and includes programmable contrast control.
What are the key differences between MSP430F439IPNR and MSP430F438IPNR?
The MSP430F439IPNR and MSP430F438IPNR share identical pinout, peripherals, and package (80-pin QFP), differing only in flash memory size: MSP430F439IPNR has 60KB+256B flash, while MSP430F438IPNR has 48KB+256B flash. Both feature 2KB RAM, same ADC, timers, USART, LCD driver, and power specs. Firmware compiled for one will run on the other if it fits within the smaller flash footprint.
Is the MSP430F439IPNR RoHS compliant and lead-free?
Yes, the MSP430F439IPNR is RoHS compliant and lead-free, meeting EU Directive 2011/65/EU requirements. The "P" in the part number denotes lead-free packaging, and the "N" indicates plastic QFP construction. TI's official packaging information confirms Pb-free matte tin lead finish and halogen-free molding compound for this PN variant.
MSP430F439IPNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-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, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 48
- Program Memory Size:
- 60KB (60K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F439IPNR FAQ
1.How can I place an order for MSP430F439IPNR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F439IPNR 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 MSP430F439IPNR reliable?
The price and inventory of MSP430F439IPNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F439IPNR is usually 5 days.
3.What payment methods are accepted for MSP430F439IPNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F439IPNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F439IPNR?
MSP430F439IPNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F439IPNR 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 MSP430F439IPNR?
For technical support, including MSP430F439IPNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F439IPNR requirements.
6.How does Aetrix verify that MSP430F439IPNR is sourced from the original manufacturer or authorized distributors?
All MSP430F439IPNR 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 MSP430F439IPNR meets industry standards.
7.What is the process for return or replacement of MSP430F439IPNR?
All MSP430F439IPNR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F439IPNR, 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 MSP430F439IPNR part is unused and in its original packaging.
Return procedure for MSP430F439IPNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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