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Texas Instruments MSP430F5438IPZ
- Part No.:
- MSP430F5438IPZ
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F5438IPZ.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:335
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Product details
Overview
MSP430F5438IPZ from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 256 KB Flash, 16 KB RAM, three 16-bit timers (TA0/TA1/TB0), a 12-bit 200-ksps ADC with 14 external + 2 internal channels, four USCI modules (dual UART/IrDA/SPI and dual I²C/SPI), and RTC functionality. It operates from 2.2 V to 3.6 V and supports fast wake-up (<5 µs) from LPM3 standby mode-ideal for battery-powered sensor nodes and portable metering systems.
For engineers reviewing the MSP430F5438IPZ datasheet, MSP430F5438IPZ pinout, MSP430F5438IPZ application, or MSP430F5438IPZ equivalent, key selection criteria include its 100-pin LQFP package, 87 GPIOs, integrated LDO core regulator, unified clock system with FLL and multiple oscillator sources (XT1, XT2, REFO, VLO), and hardware multiplier supporting 32-bit operations.
Technical Context
The MSP430F5438IPZ implements the CPUXV2 16-bit RISC core with constant generators and extended memory addressing, enabling efficient C code execution. Its Unified Clock System (UCS) integrates an FLL loop for frequency stabilization across multiple clock domains (MCLK, SMCLK, ACLK), with programmable division and source selection including 32-kHz crystals and up to 32-MHz high-frequency crystals.
Power management includes a fully integrated LDO with programmable core voltage, supply supervision (SVS/SVM), brownout reset, and five low-power modes (LPM0–LPM4). The 12-bit ADC supports autoscan, internal reference, sample-and-hold, and flexible trigger sources-including timer and DMA-enabling precise analog acquisition in energy-constrained applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | CPUXV2 16-bit RISC with constant generators and extended memory addressing for optimized code density and interrupt latency |
| Flash / RAM | 256 KB Flash (in-system programmable, 16 KB segments) and 16 KB SRAM for firmware storage and real-time data buffering |
| ADC12_A | 12-bit SAR ADC with 200 ksps max sampling rate, 14 external + 2 internal analog inputs, autoscan, and built-in reference |
| Timers | Three independent 16-bit timers: TA0 (5 CC registers), TA1 (3 CC registers), TB0 (7 CC shadow registers) for PWM, capture, and timebase generation |
| USCI Modules | Four universal serial interfaces: USCI_A0–A3 (UART/IrDA/SPI) and USCI_B0–B3 (I²C/SPI), supporting simultaneous multi-protocol communication |
| Power Modes | Five low-power modes; LPM3 draws 2.6 µA (RTC active, full RAM retention); wake-up <5 µs to active mode |
| Operating Voltage | 2.2 V to 3.6 V supply range enables direct use with single Li-ion, two alkaline, or regulated 3.3-V rails |
Pinout & Package
LQFP-100 package (14 mm × 14 mm, 0.5-mm pitch) with 87 general-purpose I/O pins, dedicated analog inputs (A0–A15), crystal terminals (XIN/XOUT), power domains (DVCC/DVSS, AVCC/AVSS, VCORE), and JTAG/SBW debug interface (TCK/TMS/TDI/TDO).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0CLK/ACLK | Timer & Clock I/O | Configurable as TA0 clock input or ACLK output (divided by 1–32); enables synchronized timing across peripherals |
| P2.7/ADC12CLK/DMAE0 | ADC & DMA Control | Provides ADC conversion clock signal or serves as external DMA trigger input for autonomous data acquisition |
| P3.1/UCB0SIMO/UCB0SDA | USCI_B0 I/O | Dual-function pin: SPI slave-in/master-out or I²C data line-supports shared bus topology without additional level-shifting |
| P4.7/TB0CLK/SMCLK | Timer & Clock Output | Drives TB0 clock input or outputs SMCLK for peripheral synchronization and external logic timing |
| RST/NMI/SBWTDIO | Reset & Debug | Multi-function pin: device reset, non-maskable interrupt, and bidirectional Spy-Bi-Wire test/data I/O for compact debugging |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LDO Core Regulator | Programmable core voltage reduces external component count and improves noise immunity in mixed-signal operation |
| Hardware Multiplier (MPY32) | Supports 32-bit signed/unsigned multiply-accumulate in one cycle-accelerates filtering, FFT, and control-loop math |
| 3-Channel DMA Controller | Enables zero-CPU-overhead data movement between peripherals (e.g., ADC → RAM, UART → RAM), extending battery life |
| Real-Time Clock (RTC_A) | Calendar-mode RTC with alarm, calibration, and battery-backup capability-maintains timekeeping during LPM4 (1.69 µA) |
| Unified Clock System (UCS) | FLL-stabilized MCLK/SMCLK/ACLK with automatic failover to VLO on crystal fault-ensures robust clocking in harsh environments |
Applications
| Portable Sensor Node | Digital Power Monitor |
|---|---|
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and pressure at 10-second intervals with wireless upload. IC Role / Device Role / Timing Role: Central MCU managing sensor I²C reads, ADC conversions, RTC-triggered sampling, and UART/low-power radio interface. Use Value: Ultra-low 2.6 µA LPM3 current extends 2×AA battery life beyond 5 years; 12-bit ADC ensures ±0.5°C temperature accuracy. | Use Scenario: DIN-rail mounted AC power meter measuring voltage, current, and harmonic content in industrial panels. IC Role / Device Role / Timing Role: Real-time data acquisition engine synchronizing 16-channel ADC sampling to line cycle via timer-triggered conversion sequences. Use Value: Autoscan-capable ADC with 200 ksps throughput captures 128 samples per cycle at 50 Hz; hardware multiplier computes RMS in <100 µs. |
| Smart Thermostat | Hand-Held Multimeter |
Use Scenario: HVAC controller with touch interface, ambient sensing, and Wi-Fi connectivity requiring low idle power and responsive UI. IC Role / Device Role / Timing Role: Main processor handling capacitive touch decoding, PID loop execution, display refresh, and communication stack scheduling. Use Value: Fast <5 µs wake-up from LPM3 enables immediate button response; 87 GPIOs support direct LED drivers and sensor interfaces. | Use Scenario: Field-service multimeter performing auto-ranging DC/AC voltage, resistance, and continuity tests with audible feedback. IC Role / Device Role / Timing Role: Precision measurement controller managing autoranging analog front-end, LCD driver, buzzer timing, and button debouncing. Use Value: Internal 1.5-V reference and 12-bit ADC deliver 0.1% basic DCV accuracy; RTC provides timestamped measurement logging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F5436IPZ | 192 KB Flash (vs. 256 KB), identical RAM, timers, ADC, USCI, and pinout; same 100-pin LQFP package | Suitable where firmware size ≤192 KB; no change to PCB or software porting effort required | Select when application firmware fits within reduced Flash budget and cost optimization is prioritized |
| MSP430F5419IPZ | 128 KB Flash, same 16 KB RAM, identical peripheral set and 100-pin LQFP footprint; lower Flash density only | Ideal for simpler sensor endpoints or legacy designs with smaller code base; retains full peripheral compatibility | Choose for cost-sensitive, functionally constrained deployments where 128 KB Flash suffices |
Compared with MSP430F5436IPZ and MSP430F5419IPZ, the MSP430F5438IPZ provides maximum on-chip program storage (256 KB) while maintaining identical peripheral feature set, power profile, and mechanical compatibility-making it the highest-capacity drop-in option in the PZ-package family.
Availability
MSP430F5438IPZ is available at Aetrix Electronics and suitable for portable sensor nodes, digital power monitors, and smart thermostats requiring stable component supply, long-term lifecycle assurance, and TI-qualified industrial-grade reliability.
Supply support for MSP430F5438IPZ 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer applications.
The MSP430F5438IPZ belongs to TI's MSP430F5xx ultra-low-power MCU family, designed specifically for precision sensing, battery-operated instrumentation, and energy-harvesting systems where nanowatt-level standby power and integrated analog peripherals are critical.
FAQ
What is the maximum system clock frequency supported by the MSP430F5438IPZ?
The MSP430F5438IPZ supports a maximum system clock (MCLK) frequency of 18 MHz, achieved using the FLL-controlled DCO with high-frequency crystal (XT2) up to 32 MHz as reference. This enables deterministic real-time performance for control loops and high-speed communication without external PLL circuitry.
Does the MSP430F5438IPZ include an integrated real-time clock (RTC)?
Yes, the MSP430F5438IPZ integrates the RTC_A module with calendar mode, alarm capability, and battery-backup support. It operates in LPM3 (2.6 µA) and LPM4 (1.69 µA), retaining full RAM and RTC functionality-enabling time-stamped logging and periodic wake-up events in battery-critical applications.
How many analog input channels does the MSP430F5438IPZ ADC support?
The MSP430F5438IPZ features the ADC12_A module with 14 external analog input channels (A0–A13) and 2 internal channels (temperature sensor and VREF+/VeREF+), totaling 16 selectable inputs. All channels are accessible via the 100-pin LQFP package with dedicated analog-capable pins.
Is the MSP430F5438IPZ pin-compatible with other devices in the MSP430F54xx family?
Yes, the MSP430F5438IPZ shares identical pinout and electrical characteristics with MSP430F5436IPZ and MSP430F5419IPZ in the 100-pin PZ package. Firmware and hardware designs can be reused across these variants with only Flash size differences affecting final binary deployment.
What debug interface does the MSP430F5438IPZ support?
The MSP430F5438IPZ supports both 4-wire JTAG and 2-wire Spy-Bi-Wire (SBW) interfaces via dedicated pins (TCK/TMS/TDI/TDO and SBWTDIO/SBWTCK). SBW enables compact debug connections using only two signals, reducing PCB routing complexity while maintaining full flash programming and real-time debugging capability.
MSP430F5438IPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- MSP430F5xx
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 18MHz
- Connectivity:
- I2C, IrDA, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 87
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.2V ~ 3.6V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F5438IPZ FAQ
1.How can I place an order for MSP430F5438IPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F5438IPZ 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 MSP430F5438IPZ reliable?
The price and inventory of MSP430F5438IPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F5438IPZ is usually 5 days.
3.What payment methods are accepted for MSP430F5438IPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F5438IPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F5438IPZ?
MSP430F5438IPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F5438IPZ 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 MSP430F5438IPZ?
For technical support, including MSP430F5438IPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F5438IPZ requirements.
6.How does Aetrix verify that MSP430F5438IPZ is sourced from the original manufacturer or authorized distributors?
All MSP430F5438IPZ 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 MSP430F5438IPZ meets industry standards.
7.What is the process for return or replacement of MSP430F5438IPZ?
All MSP430F5438IPZ units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F5438IPZ, 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 MSP430F5438IPZ part is unused and in its original packaging.
Return procedure for MSP430F5438IPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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