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Texas Instruments MSP430G2755IDA38
- Part No.:
- MSP430G2755IDA38
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 38-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430G2755IDA38.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:180
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Product details
Overview
MSP430G2755IDA38 from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller in 38-pin TSSOP (DA) package, featuring 32 kB flash, 4 kB RAM, dual 16-bit Timer_A modules, one 16-bit Timer_B module, 10-bit 200-ksps ADC with 12 channels, USCI_A0/USCI_B0 interfaces, and on-chip comparator for analog signal processing - deployed in battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the MSP430G2755IDA38 datasheet, MSP430G2755IDA38 pinout, MSP430G2755IDA38 application, or MSP430G2755IDA38 equivalent, key selection criteria include its 32 I/O capability with touch-sense support, LIN-capable UART, sub-1 µs wake-up from 0.7 µA standby mode, and integrated brownout detection for robust operation in energy-constrained embedded systems.
Technical Context
The MSP430G2755IDA38 implements a 16-bit RISC CPU with 62.5-ns instruction cycle time, constant generators, and seven addressing modes. Its basic clock system integrates DCO (calibrated up to 16 MHz), 32-kHz crystal support, and internal LF oscillator - enabling flexible low-power timing across five software-selectable LPM modes.
Peripherals are memory-mapped and accessible via all instructions: USCI_A0 supports UART/LIN/IrDA/SPI, USCI_B0 supports SPI/I²C, and the 10-bit ADC includes internal reference, sample-and-hold, autoscan, and DMA-triggered conversion - all synchronized to MCLK, SMCLK, or ACLK under full register control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 62.5-ns instruction cycle; enables deterministic real-time control in compact firmware. |
| Flash / RAM | 32 kB flash / 4 kB RAM; sufficient for standalone sensor fusion algorithms with bootloader and calibration data storage. |
| ADC Resolution & Speed | 10-bit, 200 ksps with autoscan; supports concurrent sampling across 12 analog inputs without CPU intervention. |
| Low-Power Modes | Five LPMs including LPM4 (0.1 µA RAM retention); extends coin-cell battery life to multi-year operation in wake-on-event designs. |
| USCI Interfaces | USCI_A0 (UART/LIN/IrDA/SPI) + USCI_B0 (SPI/I²C); enables dual-protocol communication with host MCU or sensors without external level shifters. |
| Timer Resources | Two 16-bit Timer_A (3 capture/compare each) + one 16-bit Timer_B (3 capture/compare); supports PWM generation, input capture, and interval timing with independent clock sources. |
| I/O Count | 32 GPIO pins with individual pullup/pulldown, interrupt edge select, and touch-sense enable; eliminates need for external capacitive sensing ICs. |
Pinout & Package
Package: 38-pin Thin Shrink Small Outline Package (TSSOP), DA suffix, 0.65 mm pitch, body size 12.5 × 6.1 mm - compatible with standard surface-mount reflow processes and manual prototyping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 / TEST/SBWTCK | Spy-Bi-Wire test clock input | Enables in-system programming and debug without JTAG header; shares P1.0 functionality when not in test mode. |
| 6 / RST/NMI/SBWTDIO | Reset/non-maskable interrupt/test data I/O | Single-pin reset initiation, NMI event handling, and bidirectional SBW communication - reduces PCB footprint vs. 4-pin JTAG. |
| P1.0–P1.7, P2.0–P2.7, P3.0–P3.7, P4.0–P4.7 | General-purpose I/O with peripheral multiplexing | All 32 pins support digital I/O, interrupt, pullup/pulldown, and peripheral functions (e.g., TA0.0, UCA0TXD, ADC10CHx, CA0–CA7). |
| DVCC / DVSS / AVCC / AVSS | Digital/analog power and ground rails | Separate analog/digital supply domains minimize noise coupling into ADC and comparator circuits; requires local decoupling per TI layout guidelines. |
| XIN/P2.6 & XOUT/P2.7 | 32-kHz crystal oscillator terminals | Supports precision real-time clock (RTC) operation and ultra-low-power LPM3/LPM4 sleep with ACLK sourced from crystal. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power standby | 0.7 µA in LPM3 with ACLK active - enables year-long operation on CR2032 battery in periodic-sensing applications. |
| Integrated LIN-capable UART | Auto-baudrate detection and LIN physical layer compliance - eliminates external transceiver for automotive body electronics diagnostics. |
| On-chip analog comparator | 8-channel input (CA0–CA7), programmable hysteresis, and slope A/D conversion - replaces discrete op-amp comparators in threshold-detection circuits. |
| Bootstrap loader (BSL) | UART-based flash programming with password protection - allows field firmware updates without debugger hardware or external programmer. |
| Digital I/O with touch sense | Individual pin oscillator enable for capacitive touch sensing - supports up to 32 self-capacitive or mutual-capacitive buttons without dedicated controller. |
| Brownout detector | Programmable trip point (1.7 V / 1.9 V / 2.1 V / 2.3 V); prevents erratic execution during brownout conditions and triggers safe shutdown sequence. |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Wireless temperature/humidity node logging data every 30 seconds and transmitting via UART to BLE gateway. IC Role / Device Role / Timing Role: Primary controller executing sensor readout, ADC conversion, data formatting, and UART transmission; uses LPM3 with ACLK from 32-kHz crystal for precise timing between samples. Use Value: 0.7 µA standby current extends CR2032 battery life beyond 24 months; integrated comparator validates sensor readiness before ADC sampling. |
Use Scenario: Handheld pulse oximeter acquiring analog photodiode signals and computing SpO₂ in real time. IC Role / Device Role / Timing Role: Signal acquisition engine driving 10-bit ADC at 200 ksps, performing digital filtering, and displaying results on segment LCD via GPIO. Use Value: 200-ksps ADC with autoscan handles dual-channel synchronous sampling; built-in reference eliminates external voltage reference IC. |
| Automotive Body Control | Smart Home Touch Interface |
Use Scenario: Door module monitoring switch status and controlling LED indicators using LIN bus communication with central ECU. IC Role / Device Role / Timing Role: LIN slave node implementing ISO 14229 diagnostics; uses USCI_A0's auto-baudrate detection to synchronize with master without crystal. Use Value: Eliminates external LIN transceiver and crystal; 1.8–3.6 V supply range matches vehicle battery fluctuations during cranking. |
Use Scenario: Wall-mounted thermostat with 12 capacitive touch keys and ambient temperature/humidity sensing. IC Role / Device Role / Timing Role: Touch controller and environmental sensor hub; uses P1–P4 pins' integrated oscillator for self-capacitive measurement and ADC for sensor readout. Use Value: All 32 I/O pins support touch-sense enable - enables full keypad + sensor interface in single-chip solution without external touch controller. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2855IDA38 | 48 kB flash, 48 GPIO, same peripherals and pinout | Higher firmware complexity support; larger BOM for non-touch applications | Select when firmware exceeds 32 kB or additional GPIO needed beyond 32 pins. |
| MSP430G2955IDA38 | 56 kB flash, 56 GPIO, identical architecture and pinout | Extended feature sets requiring >48 kB code space or >48 I/O | Choose when future-proofing for firmware growth or adding secondary communication interfaces. |
Compared with MSP430G2755IDA38, the G2855 and G2955 offer increased flash and I/O count while maintaining identical low-power performance, peripheral set, and 38-pin TSSOP footprint - making them drop-in upgrades for designs anticipating firmware expansion or I/O scaling.
Availability
MSP430G2755IDA38 is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and TI-authorized traceability.
Supply support for MSP430G2755IDA38 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 and embedded processing solutions, with over 50 years of innovation in low-power design and mixed-signal integration.
The MSP430G2xx family targets ultra-low-power portable measurement applications; the MSP430G2755IDA38 specifically balances cost, power, and peripheral integration for high-volume battery-operated endpoints.
FAQ
What is the maximum operating frequency of the MSP430G2755IDA38?
The MSP430G2755IDA38 supports a maximum MCLK frequency of 16 MHz, achieved via calibrated DCO or external HF crystal. Its 16-bit RISC core executes instructions at 62.5-ns cycle time at this rate, enabling real-time signal processing within strict power budgets. The device maintains full functionality across its 1.8–3.6 V supply range at this speed.
Does the MSP430G2755IDA38 support hardware UART with auto-baudrate detection?
Yes, the MSP430G2755IDA38's USCI_A0 module provides enhanced UART with automatic baudrate detection (LIN-compliant), allowing synchronization to incoming frames without prior knowledge of bit rate. This capability is confirmed in the SLAS800 datasheet and enables robust communication in variable-speed networks like automotive LIN buses.
How many analog input channels does the ADC10 module support on the MSP430G2755IDA38?
The ADC10 module on the MSP430G2755IDA38 supports 12 analog input channels (A0–A7, A12–A15), as verified in Table 1 of SLAS800. These channels are accessible via dedicated pins (e.g., P2.0/A0, P2.1/A1, P4.3/A12) and support autoscan mode for sequential conversion without CPU overhead.
Is the MSP430G2755IDA38 pin-compatible with other devices in the G2x55 series?
Yes, the MSP430G2755IDA38 shares identical 38-pin TSSOP (DA) package pinout with MSP430G2855IDA38 and MSP430G2955IDA38. All three devices map peripherals to the same pins (e.g., USCI_A0 on P3.4/P3.5, ADC inputs on P2.x/P3.x/P4.x), enabling direct replacement where flash/RAM requirements align.
What low-power modes are available on the MSP430G2755IDA38 and what is the lowest current draw?
The MSP430G2755IDA38 offers five software-selectable low-power modes (LPM0–LPM4). In LPM4 - with MCLK, SMCLK, ACLK, and DCO disabled - it draws just 0.1 µA while retaining RAM content, as specified in the SLAS800 datasheet. Wake-up occurs in less than 1 µs via interrupt, supporting responsive event-driven operation.
MSP430G2755IDA38 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 38-TSSOP (0.240", 6.10mm Width)
- Series:
- MSP430G2xx
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, WDT
- Number of I/O:
- 32
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2755IDA38 FAQ
1.How can I place an order for MSP430G2755IDA38 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2755IDA38 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 MSP430G2755IDA38 reliable?
The price and inventory of MSP430G2755IDA38 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2755IDA38 is usually 5 days.
3.What payment methods are accepted for MSP430G2755IDA38?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2755IDA38 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2755IDA38?
MSP430G2755IDA38 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2755IDA38 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 MSP430G2755IDA38?
For technical support, including MSP430G2755IDA38 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2755IDA38 requirements.
6.How does Aetrix verify that MSP430G2755IDA38 is sourced from the original manufacturer or authorized distributors?
All MSP430G2755IDA38 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 MSP430G2755IDA38 meets industry standards.
7.What is the process for return or replacement of MSP430G2755IDA38?
All MSP430G2755IDA38 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2755IDA38, 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 MSP430G2755IDA38 part is unused and in its original packaging.
Return procedure for MSP430G2755IDA38:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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