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Texas Instruments MSP430F156IPM
- Part No.:
- MSP430F156IPM
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MSP430F156IPM.pdf
- Description:
- IC MCU 16BIT 24KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MSP430F156IPM from Texas Instruments is an ultralow-power 16-bit mixed-signal microcontroller with 24KB+256B Flash, 1KB RAM, dual 12-bit DACs, 12-bit ADC with autoscan, three-channel DMA, and dual 16-bit timers (Timer_A3 and Timer_B3) in a 64-pin QFP package. It operates from 1.8 V to 3.6 V and targets battery-powered sensor systems and portable instrumentation requiring sub-μA standby current and fast wake-up.
For engineers reviewing the MSP430F156IPM datasheet, MSP430F156IPM pinout, MSP430F156IPM application, or MSP430F156IPM equivalent, key selection factors include its 24KB Flash/1KB RAM configuration within the F15x family, absence of USART1 (unlike F16x/F161x), Timer_B3 (not Timer_B7), and compatibility with JTAG-based debugging and BSL serial programming via P1.1/P2.2.
Technical Context
The MSP430F156IPM 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, supporting wake-up from LPM4 in under 6 μs.
It integrates analog peripherals including a 12-bit ADC with internal reference and sample-and-hold, two voltage-output 12-bit DACs (DAC0/DAC1 on P6.6/P6.7), and a comparator. Digital peripherals include two USARTs (USART0 only - UART/SPI/I²C; USART1 absent), three-channel DMA, and hardware multiplier not present (unlike F161x).
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 | 24KB + 256B Flash program memory and 1KB RAM; supports firmware updates in-field via BSL and accommodates medium-complexity sensor firmware with data buffers. |
| Power Consumption | Active mode: 330 μA at 1 MHz/2.2 V; Standby: 1.1 μA; Off mode (RAM retention): 0.2 μA - enables multi-year operation on coin-cell batteries. |
| Analog Peripherals | 12-bit ADC with 8-channel autoscan, internal reference, and sample-and-hold; dual 12-bit DACs (voltage output); comparator - suitable for closed-loop analog control without external converters. |
| Digital Peripherals | Timer_A3 (3 capture/compare registers), Timer_B3 (3 capture/compare registers), 3-channel DMA, USART0 (UART/SPI/I²C), no USART1 - limits dual-serial interface applications but simplifies routing in space-constrained designs. |
| Operating Voltage | 1.8 V to 3.6 V supply range - compatible with single Li-ion, Li-Po, or dual AA/AAA battery stacks without regulation overhead. |
| Package | 64-pin plastic quad flat pack (QFP, PM package); 10 mm × 10 mm footprint with 0.5 mm pitch - standard for hand-soldering and automated assembly in industrial PCBs. |
Pinout & Package
64-pin QFP (PM) package with exposed thermal pad (not electrically connected). Pin functions validated per SLAS368G Rev. MARCH 2011, pages 3–4 and 8–9 for MSP430F155/156/157.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI (58) | Reset / Nonmaskable Interrupt input | Active-low reset initiation; also serves as NMI source or BSL entry trigger - critical for safe power-on sequencing and firmware recovery. |
| P1.0/TACLK (12) | Timer_A clock input / General I/O | Accepts external clock for Timer_A synchronization - enables precise timing from external sensors or crystals independent of system clocks. |
| P2.6/ADC12CLK/DMAE0 (26) | ADC conversion clock / DMA channel 0 trigger | Configurable clock source for ADC sampling; also triggers DMA transfer upon conversion completion - eliminates CPU polling overhead. |
| P3.1/SIMO0/SDA (29) | USART0 SPI MOSI / I²C data line | Shared function supports either SPI master-out-slave-in or bidirectional I²C data - allows flexible peripheral interfacing with minimal pin count. |
| P6.6/A6/DAC0 (5) | Analog input A6 / DAC0 output | Simultaneous analog sensing and programmable voltage generation - enables calibration signal injection or analog actuator control from same pin. |
| TCK (57), TMS (56), TDI/TCLK (55), TDO/TDI (54) | JTAG test interface | Standard 4-wire JTAG for full-speed debugging, flash programming, and boundary scan - essential for production test and firmware development. |
Key Features
| Feature | Design Value |
|---|---|
| Five low-power modes (LPM0–LPM4) | Enables dynamic power scaling: LPM4 draws only 0.2 μA with RAM retention - ideal for intermittent wake-up sensor nodes. |
| On-chip 12-bit ADC with autoscan | Automatically sequences across up to 8 analog inputs without CPU intervention - reduces firmware complexity and improves sampling consistency. |
| Dual 12-bit DAC outputs (DAC0/DAC1) | Provides two independent, synchronized voltage outputs for analog feedback, waveform generation, or sensor biasing - eliminates need for external DACs. |
| Three-channel DMA controller | Transfers ADC results, UART data, or memory blocks autonomously - frees CPU for computation while maintaining real-time throughput. |
| Bootstrap loader (BSL) with password protection | Enables field firmware updates over UART using P1.1 (TX) and P2.2 (RX) - no external programmer required for post-deployment upgrades. |
Applications
| Portable Gas Sensor | Industrial Temperature Controller |
|---|---|
|
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 conditioning, 12-bit ADC sampling, dual DAC-based reference calibration, and UART-based display communication. Use Value: Sub-μA standby current extends battery life to >2 years; integrated ADC/DAC eliminates external signal chain components; 6 μs wake-up ensures rapid response to alarm thresholds. |
Use Scenario: DIN-rail mounted temperature regulator for HVAC or process heating, using RTD or thermocouple inputs. IC Role / Device Role / Timing Role: Real-time controller executing PID loop at 100 Hz, driving PWM heater output via DAC-controlled op-amp, and logging data via USART0 to HMI. Use Value: Dual 12-bit DACs provide precise analog setpoint and feedback references; Timer_A3 handles accurate PWM generation; 1KB RAM accommodates PID coefficients and history buffer. |
| Smart Water Meter | Low-Power Data Logger |
|
Use Scenario: Ultrasonic or magnetic flow meter with pulse output, storing hourly consumption and transmitting via RS-485 gateway. IC Role / Device Role / Timing Role: Pulse counter and time-stamped data aggregator using Timer_B3 capture and RTC-like ACLK-driven scheduling. Use Value: LPM4 mode (0.2 μA) enables >10-year operation on primary lithium battery; USART0 in SPI mode interfaces with RS-485 transceiver; 24KB Flash stores firmware + encryption keys. |
Use Scenario: Environmental monitoring node logging temperature, humidity, and light intensity every 5 minutes onto internal Flash. IC Role / Device Role / Timing Role: Autonomous logger waking from LPM4 via ACLK-based RTC interrupt, reading sensors via ADC autoscan, and storing results in Flash. Use Value: Integrated 12-bit ADC with internal reference removes need for external precision voltage reference; BSL enables remote firmware patching over UART; 1KB RAM buffers multiple samples before Flash write. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F155IPM | 16KB+256B Flash, 512B RAM, identical peripheral set and pinout - smaller code/data capacity. | Suitable for simpler sensor firmware with lower memory footprint; same power profile and packaging. | Select when firmware size < 16KB and RAM usage < 512B to reduce cost without sacrificing peripheral functionality. |
| MSP430F157IPM | 32KB+256B Flash, 1KB RAM, identical peripheral set and pinout - larger Flash for complex algorithms or bootloader + app separation. | Supports larger firmware images, cryptographic libraries, or dual-bank OTA updates; same analog/digital capabilities. | Choose when future firmware expansion, secure boot, or feature-rich sensor fusion is required beyond 24KB. |
Compared with MSP430F155IPM and MSP430F157IPM, the MSP430F156IPM delivers optimal balance of Flash (24KB) and RAM (1KB) for mid-complexity sensor applications - avoiding underutilized memory in F155 or overprovisioning cost in F157 while retaining full peripheral compatibility and identical low-power behavior.
Availability
MSP430F156IPM is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor nodes, and battery-powered data loggers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature ranges.
Supply support for MSP430F156IPM 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 decades of expertise in ultralow-power design.
The MSP430F156IPM belongs to the MSP430F15x mixed-signal microcontroller product line, engineered specifically for extended battery life in portable measurement and sensor applications through aggressive power gating and fast wake-up architecture.
FAQ
What is the maximum operating frequency of the MSP430F156IPM?
The MSP430F156IPM features a digitally controlled oscillator (DCO) that supports up to 8 MHz operation, with typical active-mode performance specified at 1 MHz for power measurements. Its 125-ns instruction cycle time confirms full-speed execution at 8 MHz, and the device maintains timing integrity across the 1.8 V–3.6 V supply range without external crystal dependency for basic operation.
Does the MSP430F156IPM support I²C communication?
Yes, the MSP430F156IPM supports I²C communication via USART0 configured in I²C mode, using P3.1 (SDA) and P3.3 (SCL) pins. This capability is confirmed in the functional block diagram and terminal functions table of SLAS368G, and enables direct connection to I²C sensors, EEPROMs, or displays without additional level-shifting circuitry.
How much Flash memory is allocated for information memory in the MSP430F156IPM?
The MSP430F156IPM allocates 256 bytes of Flash memory for information memory (segments A and B), located at addresses 01000h–010FFh. This area is typically used for calibration constants, device identifiers, or user-defined non-volatile parameters, and can be erased independently of main Flash memory during programming cycles.
Can the MSP430F156IPM perform simultaneous ADC conversions and DMA transfers?
Yes, the MSP430F156IPM supports autonomous ADC-to-DMA data movement: the ADC12 module can trigger DMA channel 0 (via P2.6/ADC12CLK/DMAE0) upon conversion completion, allowing continuous sampling into RAM buffers without CPU involvement - critical for high-throughput sensor acquisition in low-power modes.
Is the MSP430F156IPM pin-compatible with the MSP430F168IPM?
No, the MSP430F156IPM is not pin-compatible with the MSP430F168IPM. While both use the 64-pin PM package, the F168IPM includes USART1 signals (P3.6/P3.7, P4.3–P4.6, P5.0–P5.3) and Timer_B7 (7 capture/compare registers), which are absent in the F156IPM's Timer_B3 implementation - requiring PCB layout changes for substitution.
MSP430F156IPM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-LQFP
- Series:
- MSP430x1xx
- Packaging:
- Tray
- 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:
MSP430F156IPM FAQ
1.How can I place an order for MSP430F156IPM through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F156IPM 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 MSP430F156IPM reliable?
The price and inventory of MSP430F156IPM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F156IPM is usually 5 days.
3.What payment methods are accepted for MSP430F156IPM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F156IPM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F156IPM?
MSP430F156IPM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F156IPM 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 MSP430F156IPM?
For technical support, including MSP430F156IPM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F156IPM requirements.
6.How does Aetrix verify that MSP430F156IPM is sourced from the original manufacturer or authorized distributors?
All MSP430F156IPM 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 MSP430F156IPM meets industry standards.
7.What is the process for return or replacement of MSP430F156IPM?
All MSP430F156IPM units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F156IPM, 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 MSP430F156IPM part is unused and in its original packaging.
Return procedure for MSP430F156IPM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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