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Texas Instruments MSP430F157IPMR
- Part No.:
- MSP430F157IPMR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MSP430F157IPMR.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,466
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Product details
Overview
MSP430F157IPMR from Texas Instruments is an ultralow-power 16-bit mixed-signal microcontroller featuring 32KB+256B flash memory, 1KB 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 three-channel DMA - deployed in portable sensor systems and battery-powered industrial meters.
For engineers reviewing the MSP430F157IPMR datasheet, MSP430F157IPMR pinout, MSP430F157IPMR application, or MSP430F157IPMR equivalent, key selection criteria include its 32KB flash capacity, 1.8–3.6 V supply range, 330 μA active-mode current at 1 MHz/2.2 V, 6 μs wake-up from standby, and QFP-64 (PM) package compatibility with legacy MSP430F15x designs.
Technical Context
The MSP430F157IPMR 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 DCO, ACLK, SMCLK, and MCLK with programmable division and source selection.
It integrates analog peripherals including a 12-bit ADC with 8 input channels, sample-and-hold, and internal voltage reference, plus dual 12-bit voltage-output DACs synchronized via DMA triggers. The device supports JTAG-based debugging and BSL serial programming without external voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and constant generators; enables efficient C compilation and deterministic real-time execution. |
| Flash / RAM | 32KB + 256B flash memory and 1KB RAM; sufficient for complex sensor fusion algorithms and firmware updates in field-deployed devices. |
| ADC | 12-bit SAR ADC with 8 channels, internal reference, sample-and-hold, and autoscan; supports continuous monitoring of multiple analog sensors without CPU intervention. |
| DAC | Dual 12-bit voltage-output DACs (DAC0/DAC1); enables precise analog waveform generation or calibration signal injection in closed-loop control systems. |
| Timers | Timer_A3 (3 capture/compare registers) and Timer_B3 (3 capture/compare registers); provides flexible PWM, input capture, and interval timing for motor control or pulse measurement. |
| Communication | USART0 supporting UART, SPI, and I²C modes; allows direct interface to RS-232 transceivers, SPI sensors, or I²C EEPROMs using shared pins and software-configurable protocols. |
| Power Modes | Five low-power modes (LPM0–LPM4); achieves 0.2 μA off-mode current with RAM retention, extending battery life in intermittent-sampling applications. |
Pinout & Package
Package: 64-pin plastic quad flat pack (QFP), PM suffix, surface-mount, 10 mm × 10 mm body, 0.5 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI | Reset / Nonmaskable Interrupt | Active-low reset input; also serves as NMI trigger and BSL entry point - critical for safe firmware recovery and debug initialization. |
| P1.0/TACLK | Timer_A Clock Input | External clock source for Timer_A; enables precise timebase synchronization with external oscillators or event signals. |
| P2.6/ADC12CLK/DMAE0 | ADC Clock / DMA Trigger | Configurable as ADC conversion clock source or external DMA channel 0 trigger - supports hardware-timed sampling sequences. |
| P3.1/SIMO0/SDA | USART0 SPI MOSI / I²C Data | Shared function pin: drives data out in SPI slave mode or bidirectional data line in I²C - reduces pin count in multi-interface systems. |
| P6.6/A6/DAC0 | Analog Input / DAC Output | Primary 12-bit DAC0 voltage output; also functions as ADC input A6 - enables simultaneous analog output and feedback sensing on same pin. |
| TCK/TMS/TDI/TDO | JTAG Test Interface | Four-pin boundary-scan interface for programming, emulation, and production test - required for full-featured debugging with MSP-FET tools. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-Power Operation | 330 μA active @ 1 MHz/2.2 V, 1.1 μA standby, 0.2 μA RAM-retention off mode - extends coin-cell battery life to years in metering applications. |
| Integrated Analog Subsystem | 12-bit ADC with internal reference and autoscan + dual 12-bit DACs - eliminates need for external precision converters in closed-loop sensor conditioning. |
| Flexible Communication | USART0 configurable as UART, SPI, or I²C on shared pins - simplifies PCB layout and supports interoperability with diverse peripheral ecosystems. |
| Hardware DMA Controller | Three-channel DMA with peripheral-to-memory and memory-to-peripheral transfers - offloads CPU during ADC sampling or display refresh. |
| On-Chip Debug & Programming | JTAG + BSL with password-protected UART interface - enables field firmware updates and secure production programming without dedicated programmers. |
Applications
| Smart Energy Metering | Portable Gas Detector |
|---|---|
Use Scenario: Battery-powered utility meter measuring voltage, current, and power factor over extended intervals. IC Role / Device Role / Timing Role: Central controller managing ADC sampling, energy calculation, LCD display, and optical/IR communication. Use Value: 0.2 μA off-mode current preserves battery for >10 years; dual DACs calibrate sensor offsets; USART0 handles DLMS/IEC62056 protocol via UART. |
Use Scenario: Handheld instrument detecting toxic gas concentration using electrochemical or NDIR sensors. IC Role / Device Role / Timing Role: Signal conditioner, analog front-end controller, and alarm generator with real-time response. Use Value: 12-bit ADC with internal reference ensures stable sensor readings across temperature; 6 μs wake-up enables rapid response to gas threshold events. |
| Industrial Temperature Logger | Low-Power Wireless Sensor Node |
Use Scenario: Unattended environmental monitor logging thermistor/RTD readings every 5 minutes and transmitting via sub-GHz RF. IC Role / Device Role / Timing Role: Data acquisition engine with timer-triggered ADC conversions and SPI interface to RF transceiver. Use Value: Autoscan ADC captures 8 sensor inputs per cycle; LPM3 mode draws only 0.4 μA while maintaining ACLK for RTC and periodic wake-up. |
Use Scenario: Mesh-network node powered by energy harvesting, collecting ambient light, humidity, and motion data. IC Role / Device Role / Timing Role: Power-aware coordinator managing duty-cycled sensing, data aggregation, and low-energy wireless transmission. Use Value: Three-channel DMA moves ADC results directly to RAM without CPU wake-up; BSL enables remote firmware patching over UART link. |
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 | Same 32KB+256B flash and 1KB RAM, but adds USART1 and Timer_B7 (7 CCRs) - no DAC or ADC performance upgrade. | Required when dual UART/SPI interfaces or additional Timer_B compare registers are needed for multi-peripheral coordination. | Select MSP430F167IPMR if second serial interface or expanded timer resources justify migration; pinout and code base are largely compatible. |
| MSP430F156IPMR | 24KB+256B flash, 1KB RAM, identical peripheral set - 8KB less program memory than MSP430F157IPMR. | Suitable for cost-sensitive designs where firmware size remains under 24KB and future feature expansion is limited. | Choose MSP430F156IPMR for fixed-function applications with stable firmware footprint; retains same power profile and analog capabilities. |
Compared with MSP430F156IPMR, the MSP430F157IPMR provides 8KB more flash for enhanced feature sets or safety margins, while MSP430F167IPMR adds USART1 and Timer_B7 at the cost of higher complexity - all share identical QFP-64 packaging and core low-power architecture.
Availability
MSP430F157IPMR is available at Aetrix Electronics and suitable for smart metering, portable instrumentation, industrial data loggers, and battery-powered sensor systems requiring stable component supply and long-term manufacturability.
Supply support for MSP430F157IPMR 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 emphasis on energy efficiency and system integration.
The MSP430F157IPMR belongs to the MSP430F15x series - a family of ultralow-power mixed-signal MCUs designed specifically for battery-operated measurement and sensing applications demanding extended runtime and high analog precision.
FAQ
What is the maximum operating frequency of the MSP430F157IPMR?
The MSP430F157IPMR supports a maximum CPU clock frequency of 8 MHz via its digitally controlled oscillator (DCO). It achieves a 125-ns instruction cycle time at this rate, enabling real-time processing of sensor data and control loops without external crystal dependency for basic operation.
Does the MSP430F157IPMR support I²C communication?
Yes, the MSP430F157IPMR supports I²C communication through USART0 configured in I²C mode. Pins P3.1 (SDA) and P3.3 (SCL) serve as the bidirectional data and clock lines, enabling direct connection to I²C peripherals such as temperature sensors, EEPROMs, or display controllers.
How many analog input channels does the MSP430F157IPMR ADC support?
The MSP430F157IPMR features a 12-bit ADC with eight analog input channels (A0–A7), accessible via P6.0 through P6.7. These inputs support internal reference, sample-and-hold, and autoscan functionality - allowing sequential conversion of multiple sensors without software intervention.
What development tools are recommended for the MSP430F157IPMR?
Texas Instruments recommends the MSP-FET430UIF (USB) and MSP-FET430PIF (parallel port) for JTAG debugging and programming. For target-based evaluation, the MSP-TS430PM64 standalone board supports the QFP-64 package of the MSP430F157IPMR and integrates necessary power regulation and interface headers.
Is the MSP430F157IPMR pin-compatible with other MSP430F15x devices?
Yes, the MSP430F157IPMR is fully pin-compatible with other MSP430F15x devices in the PM (QFP-64) package, including MSP430F155IPMR and MSP430F156IPMR. All share identical pin assignments, electrical characteristics, and peripheral mapping - enabling drop-in replacement within the same family.
MSP430F157IPMR 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:
- 32KB (32K 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:
MSP430F157IPMR FAQ
1.How can I place an order for MSP430F157IPMR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F157IPMR 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 MSP430F157IPMR reliable?
The price and inventory of MSP430F157IPMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F157IPMR is usually 5 days.
3.What payment methods are accepted for MSP430F157IPMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F157IPMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F157IPMR?
MSP430F157IPMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F157IPMR 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 MSP430F157IPMR?
For technical support, including MSP430F157IPMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F157IPMR requirements.
6.How does Aetrix verify that MSP430F157IPMR is sourced from the original manufacturer or authorized distributors?
All MSP430F157IPMR 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 MSP430F157IPMR meets industry standards.
7.What is the process for return or replacement of MSP430F157IPMR?
All MSP430F157IPMR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F157IPMR, 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 MSP430F157IPMR part is unused and in its original packaging.
Return procedure for MSP430F157IPMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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