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Texas Instruments MSP430F169IRTDR
- Part No.:
- MSP430F169IRTDR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
MSP430F169IRTDR.pdf
- Description:
- IC MCU 16BIT 60KB FLASH 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,966
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Product details
Overview
MSP430F169IRTDR from Texas Instruments is an ultralow-power 16-bit RISC mixed-signal microcontroller with 60KB+256B flash memory, 2KB RAM, dual 12-bit DACs, 12-bit ADC with autoscan, two USARTs (UART/SPI/I²C), and seven-capture/compare Timer_B. It operates from 1.8 V to 3.6 V and supports sub-6 μs wake-up from standby mode-ideal for battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the MSP430F169IRTDR datasheet, MSP430F169IRTDR pinout, MSP430F169IRTDR application, or MSP430F169IRTDR equivalent, key selection criteria include its 64-pin QFN (RTD) package, dual USART support, 7-channel Timer_B, 60KB flash capacity, and verified operation across −40°C to +85°C industrial temperature range.
Technical Context
The MSP430F169IRTDR implements a 16-bit RISC CPU with constant generators and 125-ns instruction cycle time, paired with three-channel internal DMA and hardware multiplier for efficient signal processing. Its clock system includes DCO, ACLK, SMCLK, and MCLK with external XT1/XT2 crystal support.
It integrates analog peripherals including a 12-bit ADC with internal reference and sample-and-hold, dual synchronized 12-bit voltage-output DACs, and an on-chip comparator. Digital interfaces include two full-featured USARTs-USART0 supporting UART/SPI/I²C and USART1 supporting UART/SPI only-with dedicated pins for STE, SIMO, SOMI, UCLK, and URXD/UTXD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125-ns instruction cycle; enables deterministic real-time control in low-clock-rate applications. |
| Flash / RAM | 60KB+256B flash memory and 2KB RAM; sufficient for complex firmware with data logging and communication stacks. |
| ADC | 12-bit SAR ADC with 8-channel autoscan, internal reference, and sample-and-hold; supports high-accuracy sensor digitization without external components. |
| DAC | Dual 12-bit voltage-output DACs with synchronization; enables simultaneous analog waveform generation or precision biasing. |
| Timers | Timer_A with 3 capture/compare registers; Timer_B with 7 capture/compare-with-shadow registers; supports PWM, input capture, and time-critical event sequencing. |
| Communication | Two USARTs: USART0 (UART/SPI/I²C), USART1 (UART/SPI); provides flexible wired connectivity for multi-protocol sensor hubs. |
| Power Modes | Five low-power modes; standby current 1.1 μA, off-mode (RAM retention) 0.2 μA; extends battery life in intermittent-sampling systems. |
Pinout & Package
Package: 64-pin QFN (RTD), 9 mm × 9 mm, 0.5 mm pitch, exposed thermal pad connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI | Reset / Nonmaskable Interrupt Input | Active-low reset initiation and NMI event handling; also triggers bootstrap loader entry when held during power-up. |
| P1.0–P1.7 | General-purpose I/O / Timer_A Signals | Support TACLK, TA0–TA2 capture/compare, SMCLK output; enable precise timing and GPIO-controlled peripheral interfacing. |
| P2.0–P2.7 | General-purpose I/O / ADC/DMA/Comparator | Provide ACLK output, ADC12CLK/DMAE0 trigger, ROSC resistor connection, and CA0/CA1/CAOUT comparator signals. |
| P3.0–P3.7 | General-purpose I/O / USART0 & USART1 | Host USART0 (SIMO0/SOMI0/UCLK0/UTXD0/URXD0) and USART1 (UTXD1/URXD1) functions; enables dual serial channel operation. |
| P4.0–P4.7 | General-purpose I/O / Timer_B Signals | Support TB0–TB6 capture/compare and TBCLK input; deliver 7-channel PWM or input capture capability for motor/signal control. |
| P5.0–P5.7 | General-purpose I/O / Clock & System Control | Provide STE1, SIMO1, SOMI1, UCLK1, MCLK, SMCLK, ACLK, and TBOUTH/SVSOUT outputs; essential for clock distribution and system supervision. |
| P6.0–P6.7 | Analog I/O / ADC Inputs & DAC Outputs | Eight ADC channels (A0–A7); DAC0 and DAC1 outputs on P6.6/P6.7; SVSIN input for supply voltage supervision. |
| XIN/XOUT | XT1 Crystal Oscillator Interface | Supports 32.768 kHz watch crystal for low-power real-time clock operation with automatic failover to DCO. |
| XT2IN/XT2OUT | XT2 Crystal Oscillator Interface | Supports high-frequency standard crystals up to 8 MHz for precise system clocking in active mode. |
| VREF+/VREF− | ADC Reference Voltage Terminals | Internal 2.5 V reference output (VREF+) and selectable reference negative terminal (VREF−/VeREF−); enable ratiometric or absolute measurement modes. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-power operation | Standby current of 1.1 μA and sub-6 μs wake-up enable rapid response in energy-constrained wireless sensor endpoints. |
| Dual USART with protocol flexibility | USART0 supports UART/SPI/I²C; USART1 supports UART/SPI-eliminates need for external level shifters or protocol bridges in multi-interface designs. |
| 7-channel Timer_B with shadow registers | Enables glitch-free PWM updates and synchronized timing across multiple outputs-critical for motor control and LED dimming. |
| Integrated analog subsystem | 12-bit ADC with autoscan and dual 12-bit DACs allow closed-loop analog control (e.g., sensor excitation + feedback digitization) without external converters. |
| On-chip hardware multiplier | Accelerates math-intensive operations (FFT, filtering, PID) in firmware-reducing CPU load and active-mode duration. |
Applications
| Portable Gas Detector | Industrial Temperature Controller |
|---|---|
Use Scenario: Battery-powered handheld unit measuring CO, H₂S, or O₂ via electrochemical sensors with analog front-end conditioning. IC Role / Device Role / Timing Role: Primary controller managing sensor biasing (DAC), analog acquisition (ADC), gas concentration calculation, and Bluetooth/Wi-Fi module interface (USART0). Use Value: 60KB flash stores calibration tables and firmware updates; 2KB RAM buffers sensor readings; ultralow standby current extends battery life beyond 12 months. |
Use Scenario: DIN-rail mounted thermostat regulating HVAC actuators using RTD or thermistor inputs and PWM-driven SSRs. IC Role / Device Role / Timing Role: Real-time process controller executing PID loops at 100 Hz, driving dual DACs for analog setpoint/reference, and communicating via RS-485 (USART1 SPI-to-RS485 transceiver). Use Value: Seven-capture/compare Timer_B generates precise PWM for SSR control; dual USARTs isolate fieldbus and local display interfaces. |
| Smart Water Meter | Energy Harvesting Sensor Node |
Use Scenario: Ultrasonic flow meter harvesting power from turbine rotation, requiring burst-mode operation and magnetic tamper detection. IC Role / Device Role / Timing Role: System-on-chip managing ultrasonic transducer timing (Timer_A/B), pulse counting (P1/P2 interrupts), tamper sensing (Comparator_A), and LoRaWAN modem interface (USART0 UART). Use Value: Sub-6 μs wake-up ensures accurate time-of-flight measurement; 0.2 μA off-mode preserves capacitor charge between hourly reads. |
Use Scenario: Solar- or piezoelectric-powered environmental monitor logging temperature/humidity/pressure and transmitting via NB-IoT. IC Role / Device Role / Timing Role: Power-aware coordinator initiating ADC conversions, storing results in RAM, compressing data, and waking cellular modem only during scheduled transmission windows. Use Value: Five programmable low-power modes and hardware DMA reduce CPU involvement-minimizing energy per measurement cycle by >40% vs. polling-based alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F1612IRTD | 55KB flash, 5KB RAM, same 64-pin QFN package and peripheral set; lacks extended RAM addressing of F161x series. | Suitable for memory-constrained firmware with larger stack requirements but no need for >2KB RAM. | Select when firmware size is <55KB and RAM usage exceeds 2KB but does not require extended addressing. |
| MSP430F168IRTD | 48KB flash, 2KB RAM, identical timer/peripheral configuration except Timer_B has only 3 CCRs (not 7) and no USART1. | Appropriate for simpler serial protocols where single USART suffices and flash footprint is under 48KB. | Choose when dual USARTs and 7-channel Timer_B are unnecessary-reduces cost while retaining core analog/digital integration. |
Compared with MSP430F169IRTDR, the MSP430F1612IRTD offers more RAM but less flash and no extended addressing, while the MSP430F168IRTD reduces flash and removes USART1 and Timer_B shadow register capability-making MSP430F169IRTDR optimal for feature-rich, memory-intensive sensor edge nodes.
Availability
MSP430F169IRTDR is available at Aetrix Electronics and suitable for portable instrumentation, industrial process controllers, smart utility meters, and energy-harvesting IoT endpoints requiring stable component supply across long production lifecycles.
Supply support for MSP430F169IRTDR 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 MSP430F169IRTDR belongs to the MSP430F16x ultralow-power MCU family, engineered for battery-operated measurement systems requiring integrated analog peripherals, deterministic real-time performance, and minimal active/standby power consumption.
FAQ
What is the maximum operating frequency of the MSP430F169IRTDR?
The MSP430F169IRTDR supports a maximum system clock (MCLK) frequency of 8 MHz using the XT2 oscillator, or up to ~16 MHz via the digitally controlled oscillator (DCO) with calibration. Its 125-ns instruction cycle time corresponds to a 8-MHz CPU clock, enabling deterministic execution of time-critical tasks in sensor and control applications. The device maintains full functionality across its 1.8 V to 3.6 V supply range at these frequencies.
Does the MSP430F169IRTDR support I²C communication?
Yes, the MSP430F169IRTDR supports I²C communication exclusively through USART0, which can be configured in I²C mode using pins P3.1 (SDA) and P3.3 (SCL). USART1 does not support I²C. The I²C implementation includes slave and master modes, clock stretching, and arbitration-enabling direct interfacing with common sensors, EEPROMs, and displays without external bus controllers. This capability is confirmed in the SLAS368G datasheet section on USART0 functionality.
How many analog input channels does the MSP430F169IRTDR ADC support?
The MSP430F169IRTDR features a 12-bit ADC12 module with eight analog input channels (A0–A7), accessible via pins P6.0 through P6.7. These channels support single-ended or differential acquisition, internal reference selection (1.5 V or 2.5 V), and autoscan mode for sequential conversion without CPU intervention. The ADC achieves <10 μs conversion time and integrates sample-and-hold-making it suitable for high-fidelity sensor signal acquisition in portable and industrial equipment.
What debug and programming interfaces are supported by the MSP430F169IRTDR?
The MSP430F169IRTDR includes a JTAG-compliant Embedded Emulation Module (EEM) accessible via TCK, TMS, TDI/TCLK, and TDO/TDI pins (pins 57, 56, 55, and 54). It supports in-circuit debugging and flash programming using tools such as MSP-FET430UIF (USB) or MSP-GANG430 (production programmer). Additionally, the device implements a UART-based Bootstrap Loader (BSL) activated via P1.1 and P2.2, enabling field firmware updates without JTAG hardware.
Is the MSP430F169IRTDR pin-compatible with other devices in the MSP430F16x family?
Yes, the MSP430F169IRTDR shares identical pinout and package (64-pin QFN, RTD) with all other MSP430F16x devices including MSP430F167IRTDR and MSP430F168IRTDR. Signal mapping for power, clocks, JTAG, ADC, DAC, timers, and both USARTs is consistent across the family. This allows hardware reuse across variants-software must be adapted for differences in flash size, RAM, Timer_B CCR count, and USART1 availability-but PCB layout remains unchanged.
MSP430F169IRTDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-VFQFN Exposed Pad
- Series:
- MSP430x1xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 8MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, 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 8x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F169IRTDR FAQ
1.How can I place an order for MSP430F169IRTDR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F169IRTDR 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 MSP430F169IRTDR reliable?
The price and inventory of MSP430F169IRTDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F169IRTDR is usually 5 days.
3.What payment methods are accepted for MSP430F169IRTDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F169IRTDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F169IRTDR?
MSP430F169IRTDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F169IRTDR 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 MSP430F169IRTDR?
For technical support, including MSP430F169IRTDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F169IRTDR requirements.
6.How does Aetrix verify that MSP430F169IRTDR is sourced from the original manufacturer or authorized distributors?
All MSP430F169IRTDR 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 MSP430F169IRTDR meets industry standards.
7.What is the process for return or replacement of MSP430F169IRTDR?
All MSP430F169IRTDR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F169IRTDR, 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 MSP430F169IRTDR part is unused and in its original packaging.
Return procedure for MSP430F169IRTDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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