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Texas Instruments MSP430F155IPM
- Part No.:
- MSP430F155IPM
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MSP430F155IPM.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,464
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Product details
Overview
MSP430F155IPM from Texas Instruments is an ultralow-power 16-bit mixed-signal microcontroller featuring 16KB+256B flash memory, 512B RAM, a 12-bit ADC with internal reference and autoscan, dual 12-bit DACs, three-channel DMA, two 16-bit timers (Timer_A3 and Timer_B3), USART0 supporting UART/SPI/I²C, and integrated comparator-designed for battery-powered sensor systems and portable measurement devices.
For engineers reviewing the MSP430F155IPM datasheet, MSP430F155IPM pinout, MSP430F155IPM application, or MSP430F155IPM equivalent, key selection considerations include its 64-pin QFP package, 1.8–3.6 V supply range, five low-power modes, <6 μs wake-up time, and absence of USART1 and extended Timer_B functionality found in later family members.
Technical Context
The MSP430F155IPM 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 includes digitally controlled oscillator (DCO), ACLK, SMCLK, and MCLK, with support for external crystals on XT1 (XIN/XOUT) and XT2 (XT2IN/XT2OUT).
It integrates peripheral modules directly into the memory-mapped address space, including ADC12 with 8 analog inputs and <10 μs conversion time, DAC12 with voltage-output dual channels, and JTAG-based debugging via TCK/TMS/TDI/TDO pins. Unlike MSP430F16x/161x variants, it lacks USART1, TB7 (only TB3), hardware multiplier, and extended RAM addressing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125-ns instruction cycle; register-to-register execution in one CPU clock cycle |
| Memory | 16KB+256B flash (main + info memory), 512B RAM; supports in-system programming via JTAG or BSL |
| ADC | 12-bit SAR ADC with 8 input channels, internal reference, sample-and-hold, and autoscan-enables rapid multi-channel sensor acquisition |
| DAC | Dual 12-bit voltage-output DACs (DAC0/DAC1) with synchronization-supports analog waveform generation or calibration signal injection |
| Timers | Timer_A3 with three capture/compare registers; Timer_B3 with three capture/compare-with-shadow registers-no TB7 or extended CCRs |
| Communication | USART0 only (UART/SPI/I²C); no USART1-limits dual-serial interface applications |
| Power Modes | Five software-selectable low-power modes; standby current 1.1 μA, off-mode (RAM retention) 0.2 μA |
Pinout & Package
Package: 64-pin plastic quad flat pack (QFP), PM suffix. Pin pitch: 0.5 mm. Body size: 10 mm × 10 mm. RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI | Reset / Nonmaskable Interrupt Input | Active-low reset initiation; also serves as NMI source or BSL entry trigger |
| TCK, TMS, TDI/TCLK, TDO/TDI | JTAG Test Interface | Supports boundary-scan, flash programming, and real-time emulation via Embedded Emulation Module (EEM) |
| 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; many multiplexed with peripherals (e.g., P1.1/TA0, P3.1/SIMO0/SDA) |
| AVCC, AVSS, DVCC, DVSS | Analog & Digital Power Rails | Separate analog (AVCC/AVSS) and digital (DVCC/DVSS) supplies reduce noise coupling to ADC/DAC |
| XIN, XOUT, XT2IN, XT2OUT | Crystal Oscillator Inputs/Outputs | XT1 supports watch/standard crystals (32.768 kHz or 455 kHz–8 MHz); XT2 supports standard crystals up to 8 MHz |
| VREF+, VREF−/VeREF−, VeREF+ | ADC/DAC Reference Terminals | Internal 1.5 V or 2.5 V reference selectable; external reference supported via VeREF+ and VREF− |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-power operation | Active mode: 330 μA @ 1 MHz, 2.2 V; LPM4: 0.2 μA with RAM retention-extends battery life in portable meters |
| Fast wake-up capability | Wake from standby mode in <6 μs-enables responsive event-driven sensing without latency penalty |
| Integrated analog subsystem | Single-chip solution with 12-bit ADC, dual 12-bit DACs, comparator, and programmable reference-reduces external component count |
| Flexible clocking architecture | Multiple clock sources (DCO, XT1, XT2) with independent gating per module-optimizes power/performance trade-offs per peripheral |
| Secure in-system programming | Bootstrap loader (BSL) with password protection and UART interface-enables field firmware updates without JTAG hardware |
Applications
| Portable Sensor Node | Industrial Data Logger |
|---|---|
Use Scenario: Battery-powered environmental monitoring node measuring temperature, humidity, and pressure at 10-second intervals. IC Role / Device Role / Timing Role: Central controller managing sensor polling, ADC sampling, data processing, and low-power sleep/wake cycles. Use Value: 0.2 μA off-mode current and <6 μs wake-up enable multi-year operation on coin-cell batteries. |
Use Scenario: Standalone industrial logger recording analog process signals (4–20 mA loop outputs) over 72-hour cycles. IC Role / Device Role / Timing Role: Analog front-end processor with 12-bit ADC, internal reference, and flash storage for timestamped samples. Use Value: Integrated 12-bit ADC with autoscan and 512B RAM allow burst acquisition without external buffering. |
| Handheld Multimeter | Energy Harvesting IoT Endpoint |
Use Scenario: Compact handheld DMM with LCD display, autoranging, and continuity beeper. IC Role / Device Role / Timing Role: Mixed-signal controller handling precision ADC measurements, DAC-based reference scaling, and display interface. Use Value: Dual 12-bit DACs provide programmable gain/offset calibration; separate AVCC/AVSS rails ensure measurement accuracy. |
Use Scenario: Solar- or thermal-harvested sensor node transmitting data via SPI-connected sub-GHz transceiver. IC Role / Device Role / Timing Role: Power-aware coordinator managing energy buffer monitoring, sensor activation, and SPI communication scheduling. Use Value: Five low-power modes and 1.8 V minimum operating voltage maximize usable energy from intermittent harvesters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F167IPM | 32KB flash, 1KB RAM, Timer_B7 (7 CCRs), USART1, hardware multiplier-no DAC12.1 on P6.7 | Supports more complex control algorithms and dual-serial connectivity; lacks second DAC channel | Select when needing larger code space, extra UART, or enhanced timer resources-but verify DAC requirement coverage |
| MSP430F156IPM | 24KB flash, 1KB RAM, identical peripheral set and pinout-same 64-pin QFP, same Timer_B3/USART0 configuration | Direct drop-in upgrade path for increased firmware capacity without layout change | Choose for firmware scalability while retaining full functional and timing compatibility with MSP430F155IPM |
Compared with MSP430F155IPM, MSP430F167IPM adds USART1 and extended timer capability but removes DAC12.1; MSP430F156IPM provides 50% more flash and double RAM in identical footprint-ideal for feature expansion without redesign.
Availability
MSP430F155IPM is available at Aetrix Electronics and suitable for portable sensor systems, industrial data loggers, handheld test equipment, and energy-harvesting endpoints requiring stable component supply across long-lifecycle designs.
Supply support for MSP430F155IPM 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 MSP430F155IPM belongs to the MSP430F15x series-a foundational ultralow-power MCU line optimized for battery-operated measurement and sensing applications where milliamp-hour budgeting and fast wake-up are critical.
FAQ
What is the maximum operating frequency of the MSP430F155IPM?
The MSP430F155IPM supports a maximum MCLK frequency of 8 MHz when using the internal DCO or external XT2 crystal. Its 125-ns instruction cycle time corresponds to 8 MHz operation, and all timing specifications-including ADC conversion and timer resolution-are validated up to this rate under 1.8–3.6 V supply conditions.
Does the MSP430F155IPM include a hardware multiplier?
No, the MSP430F155IPM does not include a hardware multiplier. This feature is present only in the MSP430F16x and MSP430F161x families (e.g., MSP430F167IPM). The MSP430F155IPM relies on software-based multiplication routines, consistent with its focus on ultralow-power sensor control rather than compute-intensive tasks.
How many serial interfaces does the MSP430F155IPM support?
The MSP430F155IPM supports one universal serial communication interface (USART0), configurable as asynchronous UART, synchronous SPI, or I²C. It does not include USART1-unlike MSP430F16x/161x variants-so dual independent serial channels require external bridging or time-multiplexing.
What is the function of pin P6.7 on the MSP430F155IPM?
On the MSP430F155IPM, pin P6.7 serves as A7 (analog input channel 7), DAC1 (12-bit DAC output channel 1), and SVSIN (supply voltage supervisor input). This triple function enables simultaneous use as ADC input, analog output, or brownout threshold reference-subject to software configuration and mutual exclusivity per mode.
Is the MSP430F155IPM pin-compatible with other MSP430F15x devices?
Yes, the MSP430F155IPM is fully pin-compatible with MSP430F156IPM and MSP430F157IPM in the 64-pin QFP (PM) package. All share identical pin assignments, peripheral mappings, and electrical characteristics-enabling direct substitution for flash/RAM scaling without PCB revision.
MSP430F155IPM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-LQFP
- Series:
- MSP430x1xx
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- 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:
- 16KB (16K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 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:
MSP430F155IPM FAQ
1.How can I place an order for MSP430F155IPM through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F155IPM 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 MSP430F155IPM reliable?
The price and inventory of MSP430F155IPM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F155IPM is usually 5 days.
3.What payment methods are accepted for MSP430F155IPM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F155IPM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F155IPM?
MSP430F155IPM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F155IPM 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 MSP430F155IPM?
For technical support, including MSP430F155IPM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F155IPM requirements.
6.How does Aetrix verify that MSP430F155IPM is sourced from the original manufacturer or authorized distributors?
All MSP430F155IPM 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 MSP430F155IPM meets industry standards.
7.What is the process for return or replacement of MSP430F155IPM?
All MSP430F155IPM units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F155IPM, 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 MSP430F155IPM part is unused and in its original packaging.
Return procedure for MSP430F155IPM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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