My Inquiry
My Account
Texas Instruments MSP430G2755IRHA40T
- Part No.:
- MSP430G2755IRHA40T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MSP430G2755IRHA40T.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:259
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSP430G2755IRHA40T from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 32 kB flash, 4 kB RAM, two 16-bit Timer_A modules, one 16-bit Timer_B module, a 10-bit 200-ksps ADC with 12-channel autoscan, and USCI_A0/USCI_B0 for UART/IrDA/SPI/I²C communication. It operates from 1.8 V to 3.6 V and supports up to 32 touch-sense-enabled I/O pins, targeting battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430G2755IRHA40T datasheet, MSP430G2755IRHA40T pinout, MSP430G2755IRHA40T application, or MSP430G2755IRHA40T equivalent, key selection criteria include its 32 kB flash capacity, 32 I/O count with touch capability, 10-bit ADC with internal reference, ultra-low standby current (0.7 µA), and QFN-40 (RHA) package compatibility with space-constrained designs.
Technical Context
The MSP430G2755IRHA40T implements a 16-bit RISC CPU with 62.5-ns instruction cycle time, constant generators, and seven addressing modes. Its basic clock system integrates a digitally controlled oscillator (DCO), 32-kHz crystal support, and internal LF oscillator - enabling wake-up from LPM4 in under 1 µs.
Peripherals include dual 16-bit timers (Timer_A3 ×2, Timer_B3 ×1), COMP_A+ with eight analog comparator inputs, and USCI modules supporting simultaneous UART/LIN/IrDA (USCI_A0) and SPI/I²C (USCI_B0). All I/O pins support individually configurable pullup/pulldown resistors and pin-oscillator enable for capacitive touch sensing.
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 low-power sensor 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 channels without CPU intervention. |
| Low-Power Modes | Five software-selectable modes including LPM4 (0.1 µA RAM retention); extends coin-cell battery life to multi-year operation. |
| Communication Interfaces | USCI_A0 (UART/LIN/IrDA/SPI) + USCI_B0 (SPI/I²C); enables dual-protocol connectivity to host MCU or sensor hub without external transceivers. |
| Touch I/O Count | Up to 32 pins with integrated pin-oscillator; eliminates need for external touch controller IC in human-interface applications. |
| Supply Voltage Range | 1.8 V to 3.6 V; compatible with single-cell Li-ion, Li-po, or dual-AA alkaline power rails. |
Pinout & Package
Package: 40-pin QFN (RHA), 6 mm × 6 mm, 0.5 mm pitch, exposed thermal pad connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TEST/SBWTCK (Pin 1) | Spy-Bi-Wire test clock input | Enables in-system programming and debug via 2-wire interface; no external JTAG header required. |
| DVCC (Pins 2, 38, 39) | Digital supply voltage | Must be decoupled locally with 100 nF ceramic capacitor; powers CPU, timers, and digital I/O banks. |
| P2.5/TA1.0/ROSC (Pin 40) | Timer_A1 capture input / DCO resistor terminal | Connects external resistor to calibrate DCO frequency; enables precise clock tuning without crystal. |
| XOUT/P2.7 (Pin 2) | Crystal oscillator output | Drives 32.768 kHz watch crystal; used for ACLK source in real-time clock and low-power timing functions. |
| RST/NMI/SBWTDIO (Pin 5) | Reset / NMI input / Spy-Bi-Wire data I/O | Single-pin bidirectional debug interface; supports secure flash programming and boundary-scan testing. |
| P1.0/TA0CLK/ADC10CLK (Pin 29) | Timer_A0 clock / ADC conversion clock | Configurable as external clock source for synchronous sampling or timer synchronization. |
| AVCC / AVSS (Pins 14, 13) | Analog supply / analog ground | Must be isolated from digital power planes; critical for achieving full 10-bit ADC accuracy and noise immunity. |
| P4.0–P4.7 (Pins 15–22, 24) | Timer_B0 I/O / Comparator_A+ inputs / CAOUT | Supports PWM generation, analog threshold detection, and comparator output routing to GPIO or interrupt logic. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low standby current | 0.7 µA in LPM3 mode with ACLK active - enables monthly wake-up intervals for environmental monitoring. |
| Integrated brownout detector | Monitors VCC during battery discharge; triggers safe shutdown before flash corruption or register instability occurs. |
| On-chip comparator with slope A/D | Uses COMP_A+ to perform analog-to-digital conversion without ADC resource - reduces power and latency in threshold-triggered events. |
| Bootstrap loader (BSL) | UART-based in-field firmware update capability using P1.1 (TX) and P2.2 (RX); no debugger hardware needed for field upgrades. |
| Programmable code protection | Security fuse prevents unauthorized flash read-out; protects proprietary sensor algorithms and calibration data. |
| Digital I/O with touch enable | All 32 I/O pins support pin-oscillator configuration - allows direct implementation of slider, wheel, or proximity sensing without external components. |
Applications
| Wireless Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity node transmitting data via UART to BLE module. IC Role / Device Role / Timing Role: Primary controller managing ADC sampling, data preprocessing, USCI_A0 UART transmission, and ultra-low-power sleep scheduling. Use Value: 0.1 µA off-mode current extends CR2032 battery life beyond 3 years; 32 kB flash stores sensor fusion firmware and OTA update buffer. |
Use Scenario: Handheld pulse oximeter with analog front-end and OLED display interface. IC Role / Device Role / Timing Role: Signal acquisition controller handling photodiode ADC sampling, LED drive timing via Timer_B PWM, and I²C display control. Use Value: 200-ksps ADC captures fast pulse waveforms; integrated comparator enables real-time saturation detection without CPU load. |
| Industrial Touch HMI | Smart Meter Sensor Interface |
Use Scenario: Panel-mounted control interface with capacitive slider and button array. IC Role / Device Role / Timing Role: Dedicated touch processor scanning 32 electrodes using built-in pin oscillators and processing raw capacitance deltas. Use Value: Eliminates external touch controller; 32 dedicated I/O pins reduce BOM cost and PCB layer count versus discrete solutions. |
Use Scenario: Sub-metering unit measuring current/voltage via shunt and isolation amplifiers. IC Role / Device Role / Timing Role: Isolated sensor interface MCU acquiring analog inputs, computing RMS values, and communicating via SPI to main meter SoC. Use Value: USCI_B0 SPI master mode drives isolated ADCs; 12-channel ADC autoscan handles multi-phase voltage/current simultaneously. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2855IRHA40 | 48 kB flash, 48 I/O pins, same peripherals and package | Higher memory headroom for complex protocol stacks (e.g., Modbus RTU + encryption) | Select when firmware size exceeds 32 kB or >32 GPIOs required for expanded sensor set. |
| MSP430G2955IRHA40 | 56 kB flash, 56 I/O pins, identical architecture and peripheral set | Supports larger embedded GUIs or dual-role operation (sensor + local display driver) | Choose for future-proofing or applications requiring >48 kB code space and extended I/O expansion. |
Compared with MSP430G2855IRHA40 and MSP430G2955IRHA40, the MSP430G2755IRHA40T provides optimal cost-performance balance for fixed-function sensor nodes where 32 kB flash and 32 I/O are sufficient - avoiding over-provisioned resources while maintaining full peripheral compatibility and identical low-power behavior.
Availability
MSP430G2755IRHA40T is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, industrial touch HMIs, smart meter sensor interfaces, and battery-powered environmental loggers requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2755IRHA40T 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 MSP430G2xx family targets ultra-low-power embedded applications such as portable instrumentation, sensor networks, and energy harvesting systems - prioritizing nanowatt operation, integrated analog peripherals, and rapid wake-up responsiveness.
FAQ
What is the maximum operating frequency of the MSP430G2755IRHA40T?
The MSP430G2755IRHA40T supports a maximum MCLK frequency of 16 MHz via HF crystal or calibrated DCO. Its 16-bit RISC core achieves a 62.5-ns instruction cycle at this rate, enabling real-time signal processing in low-power sensor applications. The DCO is factory-calibrated at multiple frequencies (1/8/12/16 MHz) and stored in information memory segment A for immediate use after reset.
Does the MSP430G2755IRHA40T support hardware UART auto-baudrate detection?
Yes, the MSP430G2755IRHA40T's USCI_A0 module includes enhanced UART functionality with LIN-compliant auto-baudrate detection. This feature allows the MSP430G2755IRHA40T to automatically synchronize to incoming serial data streams without prior knowledge of baud rate - ideal for interoperability with legacy sensors or variable-speed host interfaces.
How many analog input channels does the ADC10 module support on the MSP430G2755IRHA40T?
The ADC10 module on the MSP430G2755IRHA40T supports 12 analog input channels (A0–A7, A12–A15) with autoscan capability. These channels are mapped to physical pins including P2.0–P2.4, P3.4–P3.7, and P4.3–P4.7, enabling simultaneous sampling across multiple sensors without manual channel reconfiguration in firmware.
Can the MSP430G2755IRHA40T perform capacitive touch sensing without external components?
Yes, the MSP430G2755IRHA40T integrates pin-oscillator circuitry on all 32 general-purpose I/O pins, allowing direct capacitive touch sensing using only firmware and PCB electrode design. No external RC networks or dedicated touch controller ICs are required - reducing BOM cost and board area for sliders, wheels, and proximity detection.
What debug interface does the MSP430G2755IRHA40T use, and how many pins are required?
The MSP430G2755IRHA40T uses Spy-Bi-Wire (SBW), a 2-wire debug interface requiring only TEST/SBWTCK (Pin 1) and RST/NMI/SBWTDIO (Pin 5). This eliminates the need for a 4-pin JTAG header, simplifying PCB layout and reducing debug connector footprint while supporting full flash programming, breakpoint debugging, and real-time register inspection.
MSP430G2755IRHA40T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 40-VFQFN Exposed Pad
- Series:
- MSP430G2xx
- Packaging:
- Tape & Reel (TR)
- 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:
MSP430G2755IRHA40T FAQ
1.How can I place an order for MSP430G2755IRHA40T through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2755IRHA40T 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 MSP430G2755IRHA40T reliable?
The price and inventory of MSP430G2755IRHA40T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2755IRHA40T is usually 5 days.
3.What payment methods are accepted for MSP430G2755IRHA40T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2755IRHA40T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2755IRHA40T?
MSP430G2755IRHA40T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2755IRHA40T 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 MSP430G2755IRHA40T?
For technical support, including MSP430G2755IRHA40T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2755IRHA40T requirements.
6.How does Aetrix verify that MSP430G2755IRHA40T is sourced from the original manufacturer or authorized distributors?
All MSP430G2755IRHA40T 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 MSP430G2755IRHA40T meets industry standards.
7.What is the process for return or replacement of MSP430G2755IRHA40T?
All MSP430G2755IRHA40T units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2755IRHA40T, 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 MSP430G2755IRHA40T part is unused and in its original packaging.
Return procedure for MSP430G2755IRHA40T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430G2755IRHA40T Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
