My Inquiry
My Account
Texas Instruments MSP430F156IRTDR
- Part No.:
- MSP430F156IRTDR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
MSP430F156IRTDR.pdf
- Description:
- IC MCU 16BIT 24KB FLASH 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,619
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSP430F156IRTDR from Texas Instruments is an ultralow-power 16-bit RISC mixed-signal microcontroller with 24KB+256B flash memory, 1KB RAM, dual 12-bit DACs, 12-bit ADC with autoscan, three-channel DMA, and two 16-bit timers (Timer_A3 and Timer_B3). It operates from 1.8 V to 3.6 V and supports wake-up from standby in <6 μs - ideal for battery-powered sensor nodes and portable metering systems.
For engineers reviewing the MSP430F156IRTDR datasheet, MSP430F156IRTDR pinout, MSP430F156IRTDR application, or MSP430F156IRTDR equivalent, key selection criteria include its 64-pin QFN (RTD) package, absence of USART1 and extended Timer_B registers (limited to 3 capture/compare channels), and compatibility with JTAG debugging and UART-based BSL programming.
Technical Context
The MSP430F156IRTDR implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations and high code efficiency. Its clock system integrates DCO, ACLK, SMCLK, and MCLK with support for external crystals (XT1/XT2) and internal resistor-controlled frequency tuning via P2.5/Rosc.
It features two independent USART modules: USART0 supports UART, SPI, and I²C modes; USART1 is absent in the F15x series. Peripheral control uses memory-mapped SFRs, with interrupt vectors located at 0xFFFE–0xFFE0 and priority levels ranging from 0 (lowest) to 15 (highest).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and constant generators; enables efficient C compilation and deterministic real-time execution. |
| Flash / RAM | 24KB+256B flash program memory + 1KB RAM; sufficient for complex sensor fusion algorithms and retained state during LPM3/LPM4 sleep. |
| ADC/DAC | 12-bit ADC12 with 8-channel autoscan, internal reference, and sample-and-hold; dual 12-bit DAC12 voltage-output channels synchronized for analog waveform generation. |
| Timers | Timer_A3 (3 capture/compare registers) and Timer_B3 (3 capture/compare registers, no shadow registers); supports PWM, input capture, and interval timing without CPU overhead. |
| Power Modes | Five low-power modes (LPM0–LPM4); active mode draws 330 μA @ 1 MHz/2.2 V; LPM4 draws 0.2 μA with RAM retention - extends coin-cell life to years. |
| Communication | USART0 supports UART, SPI, and I²C; no USART1 - limits dual-serial peripheral interfacing; JTAG interface enables full-speed debugging and flash programming. |
| Package | 64-pin QFN (RTD); 9 mm × 9 mm body, 0.5 mm pitch, exposed thermal pad connected to DVSS - suitable for space-constrained industrial PCBs. |
Pinout & Package
64-pin QFN package (RTD) with exposed thermal pad recommended to be connected to DVSS. Pin functions are defined per SLAS368G Rev. March 2011, applicable to MSP430F155/156/157.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI | Reset / Nonmaskable Interrupt | Active-low reset input; also serves as NMI source and BSL entry trigger - requires external pull-up for reliable startup. |
| TCK, TMS, TDI/TCLK, TDO/TDI | JTAG Test Interface | Four-pin boundary-scan interface for programming, emulation, and debug; compatible with MSP-FET430UIF and MSP-GANG430 tools. |
| 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 on P1/P2; P6.6/P6.7 double as DAC0/DAC1 outputs; P6.0–P6.7 serve as ADC inputs A0–A7. |
| AVCC / AVSS / DVCC / DVSS | Analog & Digital Power Rails | Dual-supply separation: AVCC/AVSS power ADC/DAC analog circuitry; DVCC/DVSS power digital logic - mandatory for noise-sensitive measurements. |
| XIN / XOUT / XT2IN / XT2OUT | Crystal Oscillator Inputs/Outputs | XT1 supports watch crystals (32.768 kHz); XT2 supports high-frequency crystals (up to 8 MHz); critical for precise timing in metrology applications. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-Power Operation | 0.2 μA in LPM4 (RAM retention); enables multi-year operation on CR2032 batteries in wireless sensor endpoints. |
| Dual 12-Bit DAC Outputs | Synchronized voltage-output DACs (P6.6/P6.7) support closed-loop analog control and waveform synthesis without external DAC ICs. |
| Three-Channel DMA | Enables autonomous data movement between ADC, RAM, and peripherals - reduces CPU load by >70% during continuous sampling. |
| Integrated Comparator_A | On-chip comparator with programmable hysteresis and output routing to Timer_A - eliminates need for external comparators in threshold-detection circuits. |
| Bootstrap Loader (BSL) | UART-based flash programming via P1.1 (TX) and P2.2 (RX); password-protected and field-upgradable without JTAG hardware. |
Applications
| Portable Energy Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Battery-powered electricity meter measuring voltage, current, and power factor over time. IC Role / Device Role / Timing Role: Primary MCU executing metrology firmware, managing ADC sampling synchronization, and storing calibrated data in flash. Use Value: LPM4 current of 0.2 μA extends 10-year battery life; 12-bit ADC with internal reference ensures ±0.5% energy measurement accuracy. |
Use Scenario: Wireless temperature/humidity node transmitting data via UART-to-LoRa bridge. IC Role / Device Role / Timing Role: Sensor aggregator with I²C interface to digital sensors, UART to transceiver, and wake-on-interrupt scheduling. Use Value: Wake-up from standby in <6 μs minimizes latency; dual DACs generate calibration references for analog sensor conditioning. |
| Handheld Diagnostic Tool | Low-Power Data Logger |
Use Scenario: Field technician tool capturing analog waveforms and serial bus traffic. IC Role / Device Role / Timing Role: Real-time signal acquisition controller using ADC autoscan and DMA to buffer samples into RAM before SD card write. Use Value: 12-bit ADC conversion time <10 μs enables 100 kSPS sampling; 24KB flash stores firmware plus logging buffers. |
Use Scenario: Environmental monitor logging temperature, pressure, and light every 5 minutes for 6 months. IC Role / Device Role / Timing Role: Autonomous logger with RTC-less timekeeping via LPM3 with ACLK from 32.768 kHz crystal. Use Value: 1.1 μA standby current allows 6-month operation on two AA cells; flash endurance supports 10k erase cycles for cyclic logging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F155IRTDR | 16KB+256B flash, 512B RAM; identical peripheral set and pinout; lower memory capacity. | Suitable for simpler firmware with smaller code footprint and reduced RAM requirements. | Select when application fits within 16KB flash and does not require >512B RAM - cost-optimized variant. |
| MSP430F157IRTDR | 32KB+256B flash, 1KB RAM; same peripherals and pinout; adds 8KB flash for larger firmware or data tables. | Supports more complex algorithms, larger lookup tables, or dual-application firmware images. | Choose when future firmware expansion or additional calibration data storage is required. |
Compared with MSP430F155IRTDR and MSP430F157IRTDR, the MSP430F156IRTDR offers balanced memory (24KB flash/1KB RAM) for mid-complexity sensor applications without over-provisioning or under-provisioning resources.
Availability
MSP430F156IRTDR is available at Aetrix Electronics and suitable for portable metering, industrial sensing, and handheld instrumentation requiring stable component supply, long-term lifecycle support, and consistent QFN packaging.
Supply support for MSP430F156IRTDR 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 focus on power efficiency and reliability.
The MSP430F15x family targets ultralow-power mixed-signal applications where extended battery life, integrated analog peripherals, and deterministic real-time performance are critical design requirements.
FAQ
What is the maximum operating frequency of the MSP430F156IRTDR?
The MSP430F156IRTDR supports a maximum MCLK frequency of 8 MHz when using the XT2 oscillator, or up to ~12 MHz using the DCO with calibration. Its 125-ns instruction cycle time corresponds to 8 MHz operation, and all timing specifications in SLAS368G assume this maximum clock rate for active-mode performance.
Does the MSP430F156IRTDR support I²C communication?
Yes, the MSP430F156IRTDR supports I²C communication through USART0 configured in I²C mode, using P3.1 (SDA) and P3.3 (SCL) pins. This is confirmed in the functional block diagram and terminal functions table of SLAS368G, and applies directly to the MSP430F156IRTDR as a member of the F15x series.
How many capture/compare registers does Timer_B have on the MSP430F156IRTDR?
The MSP430F156IRTDR implements Timer_B3 with exactly three capture/compare registers (TBCCR0, TBCCR1, TBCCR2), as specified in the functional block diagram and interrupt vector table of SLAS368G. Timer_B7 with seven registers is exclusive to MSP430F16x/161x devices and is not present in the MSP430F156IRTDR.
Is the MSP430F156IRTDR pin-compatible with the MSP430F168IRTDR?
No, the MSP430F156IRTDR is not pin-compatible with the MSP430F168IRTDR. While both use the 64-pin RTD package, the MSP430F168IRTDR includes additional USART1 signals (P3.6/P3.7, P4.3–P4.6, P5.0–P5.3) and Timer_B7 functionality mapped to pins unused or differently assigned on the MSP430F156IRTDR - making direct substitution impossible without PCB revision.
What development tools are supported for the MSP430F156IRTDR?
The MSP430F156IRTDR is supported by TI's MSP-FET430UIF (USB JTAG), MSP-FET430PIF (parallel port), and MSP-GANG430 production programmers. It also supports UART-based BSL programming via P1.1 and P2.2, and is compatible with Code Composer Studio and IAR Embedded Workbench for firmware development and debugging.
MSP430F156IRTDR 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:
- 24KB (24K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K 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:
MSP430F156IRTDR FAQ
1.How can I place an order for MSP430F156IRTDR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F156IRTDR 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 MSP430F156IRTDR reliable?
The price and inventory of MSP430F156IRTDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F156IRTDR is usually 5 days.
3.What payment methods are accepted for MSP430F156IRTDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F156IRTDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F156IRTDR?
MSP430F156IRTDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F156IRTDR 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 MSP430F156IRTDR?
For technical support, including MSP430F156IRTDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F156IRTDR requirements.
6.How does Aetrix verify that MSP430F156IRTDR is sourced from the original manufacturer or authorized distributors?
All MSP430F156IRTDR 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 MSP430F156IRTDR meets industry standards.
7.What is the process for return or replacement of MSP430F156IRTDR?
All MSP430F156IRTDR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F156IRTDR, 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 MSP430F156IRTDR part is unused and in its original packaging.
Return procedure for MSP430F156IRTDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430F156IRTDR Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
