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Texas Instruments MSP430F5309IPT
- Part No.:
- MSP430F5309IPT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
MSP430F5309IPT.pdf
- Description:
- IC MCU 16BIT 24KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,189
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Product details
Overview
MSP430F5309IPT from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 24 KB flash, 6 KB RAM, four 16-bit timers (TA0/TA1/TA2/TB0), dual USCI modules (UART/IrDA/SPI/I²C), 10-bit ADC with window comparator, RTC, hardware multiplier, and 31 GPIOs in a 48-pin LQFP package. It targets battery-powered sensor systems and digital timers requiring sub-2 µA standby current and <5 µs wake-up.
For engineers reviewing the MSP430F5309IPT datasheet, MSP430F5309IPT pinout, MSP430F5309IPT application, or MSP430F5309IPT equivalent, key selection factors include its 31 I/O count in LQFP-48, dual USCI support with port-mapped flexibility on P4, 10-bit ADC with 8-channel analog input capability, and verified 1.9 µA LPM3 current at 2.2 V with RTC active.
Technical Context
The MSP430F5309IPT implements a unified clock system (UCS) with FLL stabilization, VLO and REFO internal sources, and support for 32-kHz XT1 and up to 32-MHz XT2 crystals. Its power management includes an integrated 3.3-V LDO, supply supervision, brownout detection, and five low-power modes (LPM0–LPM4.5).
It features three-channel DMA, programmable drive strength on all GPIOs, port mapping controller for USCI signal routing on P4, and RTC_A module with alarm and calibration capabilities - all operating within a 1.8–3.6 V supply range and optimized for portable measurement applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with constant generators and 25-MHz max system clock |
| Memory | 24 KB flash (in-system programmable), 6 KB RAM (full retention in LPM3/LPM4) |
| Low-Power Modes | LPM3: 1.9 µA @ 2.2 V (RTC + watchdog + full RAM); LPM4: 1.1 µA @ 3 V |
| ADC | 10-bit SAR ADC10_A with 200 kSPS, 8-channel input (6 external + 2 internal), window comparator |
| Timers | TA0 (5 CC), TA1 (3 CC), TA2 (3 CC), TB0 (7 CC shadow registers) |
| Communication | USCI_A0/A1 (UART/IrDA/SPI), USCI_B0/B1 (SPI/I²C); P4 port mapping enables flexible signal assignment |
| Package | LQFP-48 (7 mm × 7 mm), 31 GPIOs, thermal pad recommended to be connected to DVSS |
Pinout & Package
LQFP-48 package with exposed thermal pad (recommended connection to DVSS). Pin count: 48 total, 31 multifunction GPIOs, 4 power/ground pins (DVCC1/DVSS1/DVCC2/DVSS2), 2 analog supplies (AVCC1/AVSS1), and dedicated JTAG/SBW debug interface (PJ.0–PJ.3, RST/NMI, TEST/SBWTCK).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0CLK/ACLK | GPIO / Timer A0 clock input / ACLK output | Configurable as timer clock source or low-frequency system clock output (divided by 1–32) |
| P1.6/TA1CLK/CBOUT | GPIO / Timer A1 clock input / Comparator_B output | Supports synchronous timer operation and analog comparator result routing |
| P2.6/RTCCLK/DMAE0 | GPIO / RTC calibration clock / DMA trigger | Enables precise RTC calibration and event-triggered DMA transfers |
| P4.0–P4.4 | Port-mapped USCI signals (UCB1/ UCA1) | Secondary functions assigned via port mapping controller; not all USCI features available simultaneously |
| RST/NMI/SBWTDIO | Reset / NMI input / Spy-Bi-Wire data I/O | Single-wire debug interface compatible with standard MSP430 programmers |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power LPM3 | 1.9 µA at 2.2 V with RTC, watchdog, and full RAM retention - enables multi-year coin-cell operation |
| Port mapping controller | Dynamic reassignment of USCI signals on P4 pins eliminates fixed pinout constraints in layout |
| Integrated 3.3-V LDO | On-chip regulated core supply reduces external component count and improves noise immunity |
| Hardware multiplier | 32-bit multiply-accumulate support accelerates math-intensive firmware (e.g., sensor fusion, filtering) |
| RTC with alarm & calibration | Real-time clock maintains time across power cycles with programmable alarms and frequency tuning via P2.6 |
Applications
| Remote Sensor Node | Digital Thermostat |
|---|---|
Use Scenario: Battery-powered environmental monitor logging temperature/humidity every 30 seconds using internal RTC wakeup. IC Role / Device Role / Timing Role: Main system controller executing sensor reads, ADC conversion, data storage, and low-power scheduling. Use Value: 1.9 µA LPM3 current extends CR2032 battery life beyond 5 years; port-mapped USCI simplifies I²C sensor integration on P4. | Use Scenario: Wall-mounted HVAC control unit with LCD display, push-button interface, and relay drivers. IC Role / Device Role / Timing Role: Central MCU managing user input, temperature regulation logic, display refresh, and relay timing. Use Value: Four independent 16-bit timers enable precise PWM fan control, button debouncing, display update intervals, and relay dwell timing without software overhead. |
| Hand-Held Meter | Industrial Timer Module |
Use Scenario: Portable multimeter with auto-ranging, backlight control, and serial data upload via UART. IC Role / Device Role / Timing Role: Signal acquisition processor interfacing with analog front-end, driving display, and handling USB-to-UART bridge communication. Use Value: 10-bit ADC with window comparator detects over-range conditions autonomously; dual USCI allows simultaneous UART debug and SPI memory access. | Use Scenario: DIN-rail mounted programmable timer for machine control with setpoint adjustment and relay output sequencing. IC Role / Device Role / Timing Role: Precision timing engine generating accurate on/off delays, pulse widths, and cyclic sequences. Use Value: TB0's 7 capture/compare registers support complex waveform generation; RTC alarm triggers daily reset or maintenance events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F5310IPT | 32 KB flash (vs. 24 KB), same 48-pin LQFP package, identical peripheral set including dual USCI and RTC | Preferred where firmware growth headroom or future feature expansion is required | Select when additional flash capacity is needed without changing PCB layout or driver code |
| MSP430F5308IPT | 16 KB flash, otherwise identical pinout, peripherals, and power specs as MSP430F5309IPT | Suitable for cost-sensitive designs with smaller firmware footprint | Choose for fixed-function applications where 16 KB flash suffices and BOM cost reduction is critical |
Compared with MSP430F5310IPT and MSP430F5308IPT, the MSP430F5309IPT delivers optimal balance of flash capacity (24 KB), peripheral richness, and LQFP-48 compatibility - making it ideal for mid-complexity sensor and timer applications where neither minimal nor maximal flash is required.
Availability
MSP430F5309IPT is available at Aetrix Electronics and suitable for remote sensor nodes, digital thermostats, hand-held meters, and industrial timer modules requiring stable component supply and long-term production support.
Supply support for MSP430F5309IPT 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 markets.
The MSP430F5309IPT belongs to TI's ultra-low-power MCU family designed specifically for portable measurement and battery-operated sensing applications where extended runtime and precision analog integration are critical.
FAQ
What is the maximum system clock frequency supported by the MSP430F5309IPT?
The MSP430F5309IPT supports a maximum system clock frequency of 25 MHz, achieved via its digitally controlled oscillator (DCO) with FLL stabilization. This frequency is validated across the full 1.8–3.6 V operating range and enables high-speed instruction execution while maintaining ultra-low active-mode current (195 µA/MHz typical at 8 MHz, 3 V). The device also supports external high-frequency crystals up to 32 MHz on XT2.
Does the MSP430F5309IPT support crystal oscillators for real-time clock operation?
Yes, the MSP430F5309IPT supports 32-kHz watch crystals on XT1 (P5.4/XIN and P5.5/XOUT pins) for precise RTC operation. The RTC_A module remains fully functional in LPM3 mode with crystal-based timekeeping, achieving 1.9 µA typical current at 2.2 V. Crystal load capacitance and startup time specifications are defined in Section 5.14 of the SLAS677G datasheet.
How many analog input channels does the 10-bit ADC on the MSP430F5309IPT support?
The MSP430F5309IPT integrates ADC10_A with 8 configurable analog input channels: 6 external (A0–A5 on P6.x/P5.x) and 2 internal (VeREF+ and VeREF− on P5.0/P5.1). This matches the "6 ext, 2 int" configuration specified for 48-pin variants in Table 3-1. Channel selection is software-controlled via ADC10CTL1, and the window comparator operates independently on any selected channel.
Can the USCI modules on the MSP430F5309IPT operate simultaneously in different protocols?
Yes - the MSP430F5309IPT contains two independent USCI modules (USCI_A0/A1 and USCI_B0/B1), each capable of concurrent operation in different modes: e.g., USCI_A0 in UART mode for debug output while USCI_B0 runs I²C to communicate with a temperature sensor. However, on the 48-pin LQFP package, USCI signal availability on P4 is governed by the port mapping controller, and not all secondary functions can be active simultaneously due to pin multiplexing constraints.
What debug interface does the MSP430F5309IPT use, and is external hardware required?
The MSP430F5309IPT uses the 4-pin Spy-Bi-Wire (SBW) interface (PJ.0/TDO, PJ.1/TDI, PJ.2/TMS, PJ.3/TCK, plus RST/NMI and TEST/SBWTCK) for programming and debugging. No external voltage generator is needed - SBW operates at the core supply voltage (1.8–3.6 V) and is compatible with TI's MSP-FET and open-source tools like naken430loader. The interface supports full JTAG functionality in SBW mode, including breakpoints and register inspection.
MSP430F5309IPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-LQFP
- 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:
- 31
- 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:
MSP430F5309IPT FAQ
1.How can I place an order for MSP430F5309IPT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F5309IPT 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 MSP430F5309IPT reliable?
The price and inventory of MSP430F5309IPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F5309IPT is usually 5 days.
3.What payment methods are accepted for MSP430F5309IPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F5309IPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F5309IPT?
MSP430F5309IPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F5309IPT 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 MSP430F5309IPT?
For technical support, including MSP430F5309IPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F5309IPT requirements.
6.How does Aetrix verify that MSP430F5309IPT is sourced from the original manufacturer or authorized distributors?
All MSP430F5309IPT 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 MSP430F5309IPT meets industry standards.
7.What is the process for return or replacement of MSP430F5309IPT?
All MSP430F5309IPT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F5309IPT, 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 MSP430F5309IPT part is unused and in its original packaging.
Return procedure for MSP430F5309IPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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