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Texas Instruments MSP430F155IPMR
- Part No.:
- MSP430F155IPMR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MSP430F155IPMR.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,236
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Product details
Overview
MSP430F155IPMR from Texas Instruments is an ultralow-power 16-bit mixed-signal microcontroller featuring 16KB+256B Flash, 512B RAM, a 12-bit ADC with internal reference and autoscan, dual 12-bit DACs, two 16-bit timers (Timer_A3 and Timer_B3), USART0 supporting UART/SPI/I²C, and integrated comparator. It operates from 1.8 V to 3.6 V and targets battery-powered sensor systems and portable measurement devices.
For engineers reviewing the MSP430F155IPMR datasheet, MSP430F155IPMR pinout, MSP430F155IPMR application, or MSP430F155IPMR equivalent, key selection considerations include its 64-pin QFP package, LPM0–LPM4 power modes, 330 μA active current at 1 MHz/2.2 V, 48 I/O pins, and absence of USART1 - distinguishing it from MSP430F16x/161x variants.
Technical Context
The MSP430F155IPMR implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations. Its clock system includes DCO, ACLK, SMCLK, and MCLK, with wake-up from standby in under 6 μs via multiple clock sources including XT1 (32 kHz watch crystal) and XT2 (up to 8 MHz).
Peripheral integration centers on mixed-signal capability: the 12-bit ADC12 supports up to 8 channels with sample-and-hold and internal voltage reference; dual DAC12 modules provide synchronized voltage-output analog generation; and the three-channel DMA controller enables autonomous data transfers between peripherals and memory without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125-ns instruction cycle time and 16 general-purpose registers |
| Memory | 16KB+256B Flash program memory + 512B RAM - sufficient for compact firmware with retained state in low-power modes |
| ADC | 12-bit SAR ADC with 8 input channels, internal reference, sample-and-hold, and autoscan - enables multi-sensor polling without CPU overhead |
| DAC | Dual 12-bit voltage-output DACs (DAC0/DAC1) with synchronization - supports precise analog waveform generation or bias control |
| Timers | Timer_A3 (3 capture/compare registers) and Timer_B3 (3 capture/compare registers, no shadow registers) - suitable for PWM, input capture, and interval timing |
| Communication | USART0 only (UART/SPI/I²C); no USART1 - limits dual-serial interface applications versus F16x family |
| Power Modes | Five software-selectable low-power modes (LPM0–LPM4); standby current = 1.1 μA, off-mode RAM retention = 0.2 μA |
Pinout & Package
Package: 64-pin Plastic Quad Flat Package (QFP), PM suffix, JEDEC MS-026AC compliant, 10 mm × 10 mm body, 0.5 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI | Reset / Nonmaskable Interrupt Input | Active-low reset initiation and NMI event handling; also triggers BSL entry when held during power-up |
| P1.0/TACLK | I/O / Timer_A Clock Input | External clock source for Timer_A; configurable as general-purpose I/O with interrupt capability |
| P2.6/ADC12CLK/DMAE0 | I/O / ADC Conversion Clock / DMA Trigger | Drives ADC sampling timing or initiates DMA channel 0 transfer upon conversion completion |
| P3.1/SIMO0/SDA | I/O / SPI Master-Out-Slave-In / I²C Data | Shared function pin: SPI data output or bidirectional I²C data line - requires mode configuration |
| P6.6/A6/DAC0 | I/O / ADC Input A6 / DAC0 Output | Analog input channel 6 or dedicated 12-bit voltage-output DAC channel 0 - mutually exclusive per configuration |
| TCK/TMS/TDI/TDO | JTAG Test Interface | Four-pin boundary-scan interface for programming, debugging, and emulation via MSP-FET430UIF or compatible tools |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-Power Operation | 330 μA active @ 1 MHz/2.2 V; 0.2 μA RAM-retentive off-mode - extends battery life in remote sensing nodes |
| Integrated Analog Peripherals | Single-chip solution combining 12-bit ADC, dual 12-bit DACs, and comparator - eliminates external signal conditioning ICs |
| Hardware DMA Controller | Three-channel DMA enables background data movement between ADC/DAC/USART and RAM - reduces CPU load and power consumption |
| Flexible Clock System | Digitally controlled oscillator (DCO) with sub-6-μs wake-up from LPM3/LPM4 - ensures rapid response to real-time events |
| Secure In-System Programming | Bootstrap loader (BSL) with password protection and UART-based flash programming - enables field firmware updates without JTAG hardware |
Applications
| Portable Gas Sensor Node | Industrial Temperature Monitor |
|---|---|
Use Scenario: Battery-powered handheld gas detector measuring CO, NO₂, or VOCs using electrochemical or NDIR sensors. IC Role / Device Role / Timing Role: Central MCU managing analog front-end signal acquisition, calibration math, display interface, and low-power sleep scheduling. Use Value: 12-bit ADC with internal reference and autoscan enables simultaneous multi-sensor sampling; 0.2 μA off-mode preserves battery for >2 years in idle state. |
Use Scenario: DIN-rail mounted temperature logger in HVAC or process control, acquiring RTD/thermistor readings every 10 seconds. IC Role / Device Role / Timing Role: Precision analog acquisition engine with DAC-based excitation control and UART-based Modbus RTU communication. Use Value: Dual 12-bit DACs generate stable current sources for 3-wire RTD biasing; USART0 in UART mode supports industrial protocol stack implementation. |
| Smart Water Meter Interface | Low-Cost Energy Harvesting Node |
Use Scenario: Ultrasonic flow meter with pulse-counting outputs and magnetic tamper detection requiring local decision logic. IC Role / Device Role / Timing Role: Real-time event processor capturing high-speed pulses via Timer_A capture inputs and monitoring GPIO for tamper flags. Use Value: Timer_A3 with three capture/compare registers handles concurrent pulse-width and period measurements; 48 GPIO pins support multiple sensor interfaces and status LEDs. |
Use Scenario: Solar- or thermal-harvested IoT node powering from micro-watt sources, transmitting sensor data via sub-GHz RF transceiver. IC Role / Device Role / Timing Role: Power-aware system orchestrator that wakes on interrupt, processes data, drives RF interface, then returns to LPM4 within milliseconds. Use Value: Wake-up from LPM4 in <6 μs ensures minimal energy loss during duty-cycled operation; supply-voltage supervisor detects brownout before harvesting voltage collapses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F167IPMR | 32KB Flash, 1KB RAM, Timer_B7 (7 CCRs), USART1, no DAC12 - higher memory and peripheral count but larger code footprint | Supports dual-serial protocols (e.g., Modbus + sensor UART) and complex control algorithms requiring extended RAM | Select when needing second USART, more timer resources, or >16KB code space - not drop-in due to pin function differences on P3.6/P3.7/P4.3–P5.3 |
| MSP430F2274IPW | 16KB Flash, 1KB RAM, 10-bit ADC, no DAC, USCI_A0/USCI_B0 (enhanced UART/SPI/I²C), 32-pin TSSOP - smaller package, lower I/O count | Suitable for space-constrained designs where dual DACs and 48 GPIO are unnecessary | Choose for cost-sensitive, lower-complexity applications with reduced analog requirements and no need for DAC-based excitation |
Compared with MSP430F167IPMR, the MSP430F155IPMR offers identical core architecture and analog capability at lower memory cost but lacks USART1 and extended timer resources; versus MSP430F2274IPW, it provides superior analog integration (12-bit ADC+DACs) and 64-pin I/O scalability at the expense of package size and modern USCI peripheral enhancements.
Availability
MSP430F155IPMR is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, and battery-powered metering applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature ranges.
Supply support for MSP430F155IPMR 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 90 years of innovation in industrial, automotive, and consumer electronics.
The MSP430F155IPMR belongs to the MSP430F1xx ultralow-power microcontroller product line, designed specifically for precision analog-intensive, battery-operated measurement systems where nanowatt-level power management and integrated mixed-signal peripherals are critical.
FAQ
What is the maximum operating frequency of the MSP430F155IPMR?
The MSP430F155IPMR supports a maximum CPU clock frequency of 8 MHz via the XT2 oscillator or DCO calibration. Its 125-ns instruction cycle time corresponds to 8 MHz operation, and the device is fully characterized for stable execution across the full 1.8 V–3.6 V supply range and −40°C to 85°C ambient temperature.
Does the MSP430F155IPMR include a hardware multiplier?
No, the MSP430F155IPMR does not include a hardware multiplier. That feature is present only in the MSP430F161x and later generations. The MSP430F155IPMR relies on optimized 16-bit RISC instructions and constant generators for efficient arithmetic, making it suitable for control and signal acquisition tasks without intensive multiply-accumulate operations.
How many serial communication interfaces does the MSP430F155IPMR support?
The MSP430F155IPMR supports one universal serial communication interface (USART0), configurable as asynchronous UART, synchronous SPI, or I²C. Unlike MSP430F16x/161x variants, it does not include USART1 - confirmed by absence of URXD1/UTXD1 pins and related interrupt/enable registers in the datasheet.
What is the purpose of the P6.7/A7/DAC1/SVSIN pin on the MSP430F155IPMR?
Pin 6 (P6.7) serves three functions: analog input A7 for the 12-bit ADC, DAC12.1 voltage-output channel, and SVS (Supply Voltage Supervisor) input. When used as SVSIN, it monitors external voltage thresholds; as DAC1, it delivers a programmable analog output; as A7, it accepts external analog signals - mode selection is controlled by register configuration.
Can the MSP430F155IPMR be programmed in-system without a JTAG debugger?
Yes, the MSP430F155IPMR includes a factory-programmed bootstrap loader (BSL) accessible via UART using pins P1.1 (TX) and P2.2 (RX). With proper password authentication, users can perform flash memory programming, erasure, and RAM loading directly through a serial interface - eliminating dependency on JTAG hardware for field updates.
MSP430F155IPMR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-LQFP
- Series:
- MSP430x1xx
- Packaging:
- Tape & Reel (TR)
- 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:
MSP430F155IPMR FAQ
1.How can I place an order for MSP430F155IPMR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F155IPMR 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 MSP430F155IPMR reliable?
The price and inventory of MSP430F155IPMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F155IPMR is usually 5 days.
3.What payment methods are accepted for MSP430F155IPMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F155IPMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F155IPMR?
MSP430F155IPMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F155IPMR 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 MSP430F155IPMR?
For technical support, including MSP430F155IPMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F155IPMR requirements.
6.How does Aetrix verify that MSP430F155IPMR is sourced from the original manufacturer or authorized distributors?
All MSP430F155IPMR 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 MSP430F155IPMR meets industry standards.
7.What is the process for return or replacement of MSP430F155IPMR?
All MSP430F155IPMR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F155IPMR, 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 MSP430F155IPMR part is unused and in its original packaging.
Return procedure for MSP430F155IPMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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