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Texas Instruments MSP430F5309IZXH
- Part No.:
- MSP430F5309IZXH
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-VFBGA
- Datasheet:
-
MSP430F5309IZXH.pdf
- Description:
- IC MCU 16BIT 24KB FLASH 80NFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:576
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Product details
Overview
MSP430F5309IZXH from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 24 KB flash, 6 KB RAM, dual USCI modules (UART/IrDA/SPI/I²C), 10-bit ADC with window comparator, RTC, four 16-bit timers, hardware multiplier, and DMA. It operates from 1.8 V to 3.6 V and targets battery-powered sensor systems and portable instrumentation requiring sub-2 µA standby current and <5 µs wake-up.
For engineers reviewing the MSP430F5309IZXH datasheet, MSP430F5309IZXH pinout, MSP430F5309IZXH application, or MSP430F5309IZXH equivalent, key selection criteria include its 80-pin nFBGA package, 47 I/O count, dual-USCI flexibility, RTC alarm capability, and verified 1.9 µA LPM3 current at 2.2 V - critical for long-life embedded sensing designs.
Technical Context
The MSP430F5309IZXH implements a unified clock system (UCS) with FLL stabilization, VLO/REFO internal sources, and support for both 32-kHz XT1 and up to 32-MHz XT2 crystals. Its power management includes an integrated 3.3-V LDO with programmable core voltage regulation and supply supervision with brownout detection.
It features three Timer_A instances (5/3/3 capture/compare registers) and one Timer_B (7 registers), enabling complex PWM generation and input capture. The two USCIs support concurrent UART/IrDA/SPI on USCI_A and SPI/I²C on USCI_B, with port mapping controller enabling flexible signal routing on Port 4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with constant generators and 25-MHz max system clock - enables high code efficiency and deterministic real-time response. |
| Memory | 24 KB flash + 6 KB RAM - sufficient for firmware with protocol stacks, sensor fusion, and RTC-based scheduling without external memory. |
| Low-Power Modes | LPM3: 1.9 µA @ 2.2 V (RTC active); LPM4: 1.1 µA @ 3 V; LPM4.5: 0.18 µA - supports multi-year operation on coin-cell batteries. |
| Analog Peripherals | 10-bit ADC10_A with 200 kSPS, 12 channels (10 external + 2 internal), window comparator - enables simultaneous multi-sensor monitoring with threshold-triggered interrupts. |
| Digital Peripherals | Two USCIs (A0/A1, B0/B1), 3-channel DMA, hardware multiplier (32-bit), RTC_A with alarm - supports autonomous data acquisition and communication offloading. |
| I/O Count & Flexibility | 47 GPIO with interrupt capability, Schmitt-trigger inputs, configurable drive strength - accommodates mixed-signal board layouts with noise immunity and level-shifting needs. |
Pinout & Package
The MSP430F5309IZXH is housed in an 80-pin nFBGA (5 mm × 5 mm) package with exposed thermal pad recommended to be connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0CLK/ACLK | GPIO / Timer_A0 clock input / ACLK output | Primary low-frequency clock source routing; enables precise timing synchronization across peripherals. |
| P5.4/XIN & P5.5/XOUT | XT1 crystal oscillator terminals | Supports 32.768-kHz watch crystal for RTC accuracy ±20 ppm - essential for timekeeping in thermostats and meters. |
| P2.6/RTCCLK/DMAE0 | RTC clock output / DMA trigger | Provides calibrated 1-Hz or divided RTCCLK for periodic sampling or DMA-initiated ADC conversions without CPU intervention. |
| P4.0–P4.4 (PM_ prefixed) | Port-mapped USCI_B1 & USCI_A1 signals | Enables dynamic reassignment of SPI/I²C functions to Port 4 pins - simplifies PCB layout and avoids signal congestion. |
| RST/NMI/SBWTDIO | Reset / NMI input / Spy-Bi-Wire debug I/O | Single-pin 2-wire JTAG-compatible interface - reduces debug footprint and supports in-system programming without external headers. |
Key Features
| Feature | Design Value |
|---|---|
| Unified Clock System (UCS) | FLL-stabilized DCO with multiple internal/external sources ensures robust clocking across voltage/temperature variations without external PLL components. |
| Flexible Power Management | Integrated LDO with programmable VCORE and SVS/SVM monitors enables safe operation during battery voltage sag and eliminates need for external regulators. |
| Port Mapping Controller | Allows runtime remapping of USCI functions to Port 4 pins - increases design reuse across variants and simplifies routing in dense nFBGA layouts. |
| RTC with Alarm & Calibration | Hardware RTC maintains time in LPM3 with alarm interrupt and calibration register - enables scheduled wake-ups and accurate time-stamping without software overhead. |
| Comparator_B with Hysteresis | 8-channel analog comparator with programmable hysteresis supports zero-crossing detection and battery-level monitoring independent of ADC. |
Applications
| Wireless Sensor Node | Digital Thermostat |
|---|---|
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and motion data for BLE transmission every 5 minutes. IC Role / Device Role / Timing Role: Central MCU managing sensor interfaces, ADC sampling, RTC-triggered wake-up, and USCI_A0 UART-to-BLE bridge. Use Value: 1.9 µA LPM3 current extends CR2032 life beyond 3 years; dual USCI allows concurrent sensor polling and radio handshaking. | Use Scenario: Residential HVAC control unit measuring ambient temperature, driving display, and communicating with smart hub via I²C. IC Role / Device Role / Timing Role: Main controller executing PID loop, updating LCD via GPIO, and using USCI_B1 for I²C master communication. Use Value: Integrated RTC enables precise 1-minute scheduling; 47 GPIO support direct LED/display drive and push-button inputs without expanders. |
| Hand-Held Multimeter | Industrial Timer Module |
Use Scenario: Portable meter acquiring analog voltage/current readings, performing auto-ranging, and storing min/max values in RAM. IC Role / Device Role / Timing Role: Signal acquisition MCU interfacing 10-bit ADC, comparator for over-range detection, and LCD driver via GPIO. Use Value: Window comparator triggers immediate interrupt on out-of-range input; 24 KB flash stores calibration tables and firmware updates. | Use Scenario: DIN-rail mounted timer controlling motor start/stop sequences with user-set delays and relay outputs. IC Role / Device Role / Timing Role: Real-time sequencer using Timer_B for precise PWM output and RTC for calendar-based scheduling. Use Value: Seven capture/compare registers in TB0 enable multi-channel independent timing; LPM4.5 (0.18 µA) ensures retention during power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F5310IZXH | 32 KB flash (vs. 24 KB), same peripherals, pin-compatible in ZXH package | Preferred when firmware complexity requires >24 KB code space or future-proofing for feature expansion | Select if additional flash headroom is needed without changing PCB layout or peripheral configuration. |
| MSP430F5308IZXH | 16 KB flash, identical RAM, timers, USCI, ADC, and package; otherwise functionally identical | Suitable for cost-sensitive designs where firmware fits in 16 KB and no flash margin is required | Choose for lower BOM cost when application firmware size is confirmed ≤16 KB and no future updates demand extra space. |
Compared with MSP430F5310IZXH and MSP430F5308IZXH, the MSP430F5309IZXH delivers optimal balance of flash capacity (24 KB), ultra-low-power performance (1.9 µA LPM3), and full peripheral set - making it ideal for mid-complexity sensing and control applications where neither minimal nor maximal flash is required.
Availability
MSP430F5309IZXH is available at Aetrix Electronics and suitable for wireless sensor nodes, digital thermostats, hand-held meters, and industrial timer modules requiring stable component supply and long-term production support.
Supply support for MSP430F5309IZXH 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 with emphasis on energy efficiency and reliability.
The MSP430F5309IZXH belongs to TI's MSP430F5xx ultra-low-power microcontroller family, designed specifically for battery-operated measurement and sensing applications demanding nanowatt-level sleep modes and fast wake-up responsiveness.
FAQ
What is the maximum operating frequency of the MSP430F5309IZXH?
The MSP430F5309IZXH supports a maximum system clock frequency of 25 MHz, achieved via its digitally controlled oscillator (DCO) stabilized by the FLL in the unified clock system. This frequency is fully operational across the specified 1.8 V to 3.6 V supply range and enables real-time processing for sensor fusion and communication protocols without compromising ultra-low-power operation in active mode.
Does the MSP430F5309IZXH support crystal oscillators for precise timing?
Yes, the MSP430F5309IZXH supports two crystal oscillators: a 32.768-kHz watch crystal on P5.4/XIN and P5.5/XOUT for RTC accuracy, and a high-frequency crystal up to 32 MHz on XT2 pins (P5.2/XT2IN and P5.3/XT2OUT). Both are fully integrated into the UCS and can be selected as clock sources for MCLK, SMCLK, or ACLK with automatic fault detection and failover.
How many I/O pins does the MSP430F5309IZXH provide in its nFBGA package?
The MSP430F5309IZXH in the 80-pin nFBGA (ZXH) package provides 47 general-purpose I/O pins, all supporting interrupt capability, Schmitt-trigger inputs, and configurable drive strength. This count is confirmed in the Device Comparison table (Table 3-1) and matches the functional block diagrams for ZXH/ZQE packages - distinct from the 31 I/O count in 48-pin variants.
Can the MSP430F5309IZXH operate from a single 3.0-V coin cell battery?
Yes, the MSP430F5309IZXH operates across 1.8 V to 3.6 V, making it fully compatible with standard 3.0-V coin cells (e.g., CR2032). Its LPM3 current of 1.9 µA at 2.2 V and 2.1 µA at 3.0 V ensures multi-year operation, while the integrated LDO maintains stable 3.3-V core voltage even as battery voltage declines - eliminating need for external regulators.
What debug interface does the MSP430F5309IZXH use, and is external hardware required?
The MSP430F5309IZXH uses the 2-wire Spy-Bi-Wire (SBW) interface via RST/NMI/SBWTDIO and TEST/SBWTCK pins - a subset of JTAG that requires only two physical connections. No external voltage translator or dedicated debugger chip is needed; TI's MSP-FET or compatible tools support full flash programming, breakpoint debugging, and real-time variable inspection directly through these pins.
MSP430F5309IZXH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-VFBGA
- Series:
- MSP430F5xx
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- I2C, IrDA, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 47
- Program Memory Size:
- 24KB (24K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 6K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F5309IZXH FAQ
1.How can I place an order for MSP430F5309IZXH through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F5309IZXH 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 MSP430F5309IZXH reliable?
The price and inventory of MSP430F5309IZXH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F5309IZXH is usually 5 days.
3.What payment methods are accepted for MSP430F5309IZXH?
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MSP430F5309IZXH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F5309IZXH 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 MSP430F5309IZXH?
For technical support, including MSP430F5309IZXH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F5309IZXH requirements.
6.How does Aetrix verify that MSP430F5309IZXH is sourced from the original manufacturer or authorized distributors?
All MSP430F5309IZXH 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 MSP430F5309IZXH meets industry standards.
7.What is the process for return or replacement of MSP430F5309IZXH?
All MSP430F5309IZXH units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F5309IZXH, 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 MSP430F5309IZXH part is unused and in its original packaging.
Return procedure for MSP430F5309IZXH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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