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Texas Instruments MSP430F133IRTDR
- Part No.:
- MSP430F133IRTDR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
MSP430F133IRTDR.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,534
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Product details
Overview
MSP430F133IRTDR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 8KB Flash, 256B RAM, a 12-bit ADC with 8 channels and internal reference, one USART (UART/SPI), two 16-bit timers (Timer_A3 and Timer_B3), and on-chip comparator-designed for battery-powered sensor systems and portable metering applications.
For engineers reviewing the MSP430F133IRTDR datasheet, MSP430F133IRTDR pinout, MSP430F133IRTDR application, or MSP430F133IRTDR equivalent, this page delivers verified technical context, package-specific pin functions, real-world use cases, and validated alternative options for industrial embedded design and low-power system integration.
Technical Context
The MSP430F133IRTDR implements a 16-bit CPU with constant generators and hardware multiplier, enabling high code efficiency in ultra-low-power operation. Its five power-saving modes-including LPM3 with <6 µs wake-up-support extended battery life in measurement devices.
It integrates a 12-bit ADC with sample-and-hold and autoscan, a single USART supporting asynchronous UART or synchronous SPI, and dual 16-bit timers with capture/compare capability. The device uses a digitally controlled oscillator (DCO) and supports external crystals (LFXT1 and XT2) for precise timing control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125-ns instruction cycle and hardware multiplier |
| Memory | 8KB + 256B Flash program memory; 256B RAM data memory |
| ADC | 12-bit SAR ADC with 8 input channels, internal reference, <10 µs conversion time |
| Timers | Timer_A3 (3 capture/compare registers); Timer_B3 (3 capture/compare with shadow registers) |
| Communication | One USART supporting UART or SPI modes; no second USART |
| Power Modes | Five low-power modes; standby current 1.6 µA; off-mode (RAM retention) 0.1 µA |
| Supply Voltage | 1.8 V to 3.6 V operation-enables direct coin-cell or single Li-ion battery use |
Pinout & Package
The MSP430F133IRTDR is packaged in a 64-pin VQFN (RTD) with 9 mm × 9 mm body size and exposed thermal pad connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DVCC (Pin 1) | Digital supply voltage | Primary digital power rail; must be decoupled near package |
| DVSS (Pin 63) | Digital ground | Reference for all digital I/O and core logic; connects to QFN thermal pad |
| AVCC (Pin 64) | Analog supply voltage | Separate analog power rail for ADC and comparator; requires independent filtering |
| AVSS (Pin 62) | Analog ground | Isolated analog return path; must be star-connected to avoid noise coupling |
| P1.0–P1.7, P2.0–P2.7, P3.0–P3.7, P4.0–P4.7, P5.0–P5.7, P6.0–P6.7 | General-purpose I/O ports | 48 total GPIO pins with interrupt capability; many support peripheral functions (e.g., TA0, TB2, URXD0, A0–A7) |
| RST/NMI (Pin 58) | Reset / non-maskable interrupt | Active-low reset input; also serves as NMI source and BSL entry trigger |
| TCK/TMS/TDI/TDO (Pins 57, 56, 55, 54) | JTAG test interface | Supports full boundary-scan, flash programming, and debug via standard JTAG chain |
| XIN/XOUT (Pins 8, 9) | LFXT1 crystal oscillator inputs | Connects to 32.768 kHz watch crystal for low-power ACLK generation |
| XT2IN/XT2OUT (Pins 53, 52) | XT2 crystal oscillator inputs | Supports high-frequency crystal (up to 8 MHz) for SMCLK/MCLK when enabled |
| VREF+/VREF−/VeREF+ (Pins 7, 11, 10) | ADC reference terminals | Enable internal 2.5V reference or external reference selection; VeREF+ allows precision external bias |
| ADC12CLK (Pin 26) | ADC conversion clock input | Accepts external clock for deterministic sampling timing; bypasses internal clock dividers |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power active mode | 280 µA at 1 MHz, 2.2 V-enables multi-year operation on CR2032 batteries in sleep-dominated applications |
| Fast wake-up from LPM3 | <6 µs transition to active mode-critical for responsive sensor polling without latency penalty |
| Integrated 12-bit ADC with autoscan | Automatically sequences across up to 8 analog inputs without CPU intervention-reduces firmware overhead and power |
| Single USART with dual-mode operation | Configurable as UART (for host communication) or SPI (for sensor/flash interfacing) using same peripheral-saves pin count and layout space |
| On-chip comparator with hysteresis | Provides threshold detection and window monitoring without external components-ideal for battery voltage supervision or signal level sensing |
| Programmable security fuse | Prevents unauthorized read-out of Flash contents-meets basic firmware protection requirements for OEM deployments |
Applications
| Industrial Sensor Node | Portable Energy Meter |
|---|---|
Use Scenario: Wireless temperature/humidity node operating on AA batteries with periodic wake-up, sensor reading, and RF transmission. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, timer-triggered wake-up, USART-driven RF module interface, and low-power state transitions. Use Value: Sub-µA standby current and <6 µs wake-up minimize energy per measurement cycle, extending field deployment to >5 years. | Use Scenario: Handheld electricity meter with LCD display, button interface, and isolated RS-485 communication for utility data upload. IC Role / Device Role / Timing Role: Central MCU handling pulse counting (via TA0 capture), 12-bit ADC for voltage/current sensing, USART0 in UART mode for RS-485, and real-time clock via ACLK. Use Value: Integrated 12-bit ADC with internal reference eliminates external precision references; single-chip solution reduces BOM cost and board area. |
| Smart Building Occupancy Detector | Low-Power Environmental Monitor |
Use Scenario: PIR-based occupancy sensor with ambient light and temperature compensation, transmitting status via sub-GHz RF every 30 seconds. IC Role / Device Role / Timing Role: System orchestrator executing timed ADC reads (light/temp), processing PIR edge events via port interrupts, and synchronizing RF transmit bursts using Timer_B PWM outputs. Use Value: Dual 16-bit timers enable simultaneous event timing and PWM-controlled RF enable; comparator monitors battery voltage to prevent brownout resets. | Use Scenario: Battery-powered indoor air quality logger recording CO₂, VOC, and humidity every 2 minutes for 6 months. IC Role / Device Role / Timing Role: Data acquisition engine using ADC autoscan across multiple analog sensors, storing timestamped samples in RAM, and initiating USB/UART dump upon docking. Use Value: 8KB Flash accommodates complex logging firmware and calibration tables; 256B RAM suffices for circular buffer storage between uploads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F135IRTDR | 16KB Flash, 512B RAM, identical peripherals and pinout | Supports larger firmware (e.g., BLE stack, advanced filtering algorithms) | Select when firmware growth headroom or additional RAM for buffering is required; drop-in replacement with no layout change |
| MSP430F233IRTDR | 16KB Flash, 1KB RAM, enhanced USCI (instead of USART), 1.8–3.6 V, but different pin mapping and no Timer_B shadow registers | Requires PCB redesign; better suited for designs needing higher RAM or USCI flexibility | Choose only if migrating to newer F2xx series architecture; not pin-compatible-requires full schematic and layout revision |
Compared with MSP430F133IRTDR, the MSP430F135IRTDR offers double Flash/RAM with full pin and functional compatibility, while the MSP430F233IRTDR introduces architectural improvements at the cost of layout incompatibility-making the former a true upgrade path and the latter a platform-level redesign decision.
Availability
MSP430F133IRTDR is available at Aetrix Electronics and suitable for industrial sensor nodes, portable energy meters, and smart building occupancy detectors requiring stable component supply and long-term manufacturability.
Supply support for MSP430F133IRTDR 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 MSP430F13x product line was engineered specifically for ultra-low-power, battery-operated measurement and control applications-emphasizing rapid wake-up, integrated analog peripherals, and minimal active/sleep current across all operating conditions.
FAQ
What is the maximum operating frequency of the MSP430F133IRTDR?
The MSP430F133IRTDR operates up to 8 MHz using the XT2 oscillator or DCO-calibrated SMCLK. Its 16-bit RISC core achieves a 125-ns instruction cycle at 8 MHz, enabling real-time response in sensor and control loops without performance bottlenecks.
Does the MSP430F133IRTDR support in-system programming?
Yes, the MSP430F133IRTDR supports serial onboard programming via its built-in bootloader (BSL) using UART or SPI over the existing USART0 interface-no external programming voltage is needed, and code protection is enforced by a programmable security fuse.
How many analog input channels does the MSP430F133IRTDR ADC support?
The MSP430F133IRTDR features a 12-bit ADC with 8 selectable analog input channels (A0–A7), accessible through P6.0–P6.7. It supports internal reference (2.5 V), external reference, or AVCC, and includes autoscan mode for unattended multi-channel sequencing.
Is the MSP430F133IRTDR pin-compatible with other MSP430F14x devices?
No-the MSP430F133IRTDR shares the same 64-pin VQFN (RTD) package footprint with MSP430F14x devices but differs in peripheral configuration: it has only one USART and Timer_B3 (vs. Timer_B7), and lacks USART1 and TB3–TB6 signals. Pin functions for shared pins match, but unused pins on MSP430F133IRTDR are reserved or NC.
What is the purpose of the ROSC pin on the MSP430F133IRTDR?
The ROSC pin (P2.5) connects to an external resistor that sets the nominal frequency of the digitally controlled oscillator (DCO). This enables factory-trimmed or user-adjustable DCO calibration-critical for achieving accurate timing in applications without external crystals, such as cost-sensitive portable meters.
MSP430F133IRTDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-VFQFN Exposed Pad
- Series:
- MSP430x1xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 8MHz
- Connectivity:
- SPI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 48
- Program Memory Size:
- 8KB (8K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F133IRTDR FAQ
1.How can I place an order for MSP430F133IRTDR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F133IRTDR 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 MSP430F133IRTDR reliable?
The price and inventory of MSP430F133IRTDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F133IRTDR is usually 5 days.
3.What payment methods are accepted for MSP430F133IRTDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F133IRTDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F133IRTDR?
MSP430F133IRTDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F133IRTDR 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 MSP430F133IRTDR?
For technical support, including MSP430F133IRTDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F133IRTDR requirements.
6.How does Aetrix verify that MSP430F133IRTDR is sourced from the original manufacturer or authorized distributors?
All MSP430F133IRTDR 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 MSP430F133IRTDR meets industry standards.
7.What is the process for return or replacement of MSP430F133IRTDR?
All MSP430F133IRTDR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F133IRTDR, 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 MSP430F133IRTDR part is unused and in its original packaging.
Return procedure for MSP430F133IRTDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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