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Texas Instruments MSP430A145IRGCR
- Part No.:
- MSP430A145IRGCR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
MSP430A145IRGCR.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,082
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Product details
Overview
MSP430A145IRGCR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring USB 2.0 physical layer (PHY), integrated USB-PLL, 12-bit ADC with autoscan, four 16-bit timers (TA0/TA1/TA2/TB0), two USCI modules (UART/IrDA/SPI/I²C), RTC with alarm, hardware multiplier, and 3-channel DMA. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes requiring USB connectivity and precise analog acquisition.
For engineers reviewing the MSP430A145IRGCR datasheet, MSP430A145IRGCR pinout, MSP430A145IRGCR application, or MSP430A145IRGCR equivalent, key selection criteria include its 64-pin VQFN package, 47 I/O pins, USB-capable architecture, 12-bit ADC with 12 external channels, and LPM4.5 shutdown current of 0.18 µA at 3.0 V - critical for energy-constrained embedded designs.
Technical Context
The MSP430A145IRGCR implements a 16-bit RISC CPU with constant generators and extended memory addressing, paired with a unified clock system including FLL, VLO, REFO, XT1 (32 kHz), and XT2 (up to 32 MHz). Its power management includes an integrated LDO with programmable core voltage, SVS/SVM, and brownout detection.
USB functionality is fully integrated: USB-PHY, 3.3-V/1.8-V USB power system, eight endpoints, and support for full-speed (12 Mbps) operation. The 12-bit ADC supports up to 200 ksps sampling, internal/external reference selection, and autoscan across 12 external inputs - matching the MSP430F5528IRGC specification set.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16-bit registers and constant generators for optimized code density and low-cycle execution |
| Supply Voltage Range | 1.8 V to 3.6 V - enables direct operation from single Li-ion, two alkaline, or regulated 3.3-V rails |
| LPM4.5 Current | 0.18 µA at 3.0 V - enables multi-year battery life in always-off sensor wake-on-event applications |
| USB Interface | Full-speed (12 Mbps) USB 2.0 with integrated PHY, PLL, and dual-voltage power system - eliminates external transceiver |
| ADC Resolution & Channels | 12-bit SAR ADC with 12 external input channels and autoscan - supports simultaneous multi-sensor data logging without firmware overhead |
| Timer Resources | Four 16-bit timers: TA0 (5 CC), TA1 (3 CC), TA2 (3 CC), TB0 (7 CC shadow) - enables concurrent PWM, capture, and interval timing tasks |
| I/O Count | 47 general-purpose I/O pins with configurable drive strength, Schmitt-trigger inputs, and interrupt capability on all ports |
Pinout & Package
Package: VQFN-64 (RGCR), 9 mm × 9 mm, 0.5-mm pitch, thermally enhanced exposed pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI | Reset / Non-maskable Interrupt Input | Active-low reset with NMI capability; internal pullup; supports SBW debugging interface |
| DP / DM | USB Differential Data Lines | Full-speed USB 2.0 differential pair; internally terminated; require no external resistors |
| PUR | USB Pullup Resistor Control | Enables/disables internal 1.5-kΩ pullup on DP for USB device enumeration control |
| AVCC / AVSS | Analog Power Supply / Ground | Dedicated 3.0–3.6-V analog domain supply; must be filtered separately from DVCC |
| XIN / XOUT | Low-Frequency Crystal Oscillator Terminals | Supports 32.768-kHz watch crystal for RTC accuracy and low-power clock source |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB 2.0 PHY + PLL | Eliminates external transceiver and clock synthesizer; reduces BOM count and PCB area by ≥5 components |
| 12-bit ADC with Autoscan | Automatically sequences across 12 external channels at up to 200 ksps - enables unattended multi-sensor acquisition |
| Ultra-Low-Power LPM4.5 Mode | 0.18 µA shutdown current with RAM retention - preserves state during long sleep intervals without backup battery |
| Unified Clock System | FLL-stabilized DCO, VLO, REFO, and dual crystal support (XT1/XT2) - ensures robust timing across operating modes and temperature |
| Hardware Multiplier (MPY32) | 32-bit multiply-accumulate in ≤16 cycles - accelerates filtering, FFT, and control loop math without CPU load |
Applications
| Portable Sensor Hub | USB-Capable Data Logger |
|---|---|
Use Scenario: Compact environmental monitor collecting temperature, humidity, and pressure via I²C sensors, storing data locally, and uploading via USB mass storage class. IC Role / Device Role / Timing Role: Central MCU managing sensor I/O, ADC sampling, RTC timestamping, USB enumeration, and flash-based data buffering. Use Value: Single-chip solution replaces discrete USB transceiver + MCU + RTC + ADC, reducing footprint by >40% and enabling coin-cell operation with LPM4.5. |
Use Scenario: Industrial field logger capturing analog signals from 8-channel thermocouple inputs at 100 Hz, applying cold-junction compensation, and exporting CSV files via USB. IC Role / Device Role / Timing Role: Analog acquisition controller with autoscan ADC, real-time timestamping, and USB bulk transfer engine. Use Value: 12-bit ADC with internal reference and 12 external channels enables calibrated multi-point measurement without external precision references. |
| USB HID Peripheral | Low-Power USB Bridge |
Use Scenario: Programmable industrial keypad sending keystroke reports to host PC using USB HID protocol, powered by 3.3-V rail with <100-µA standby draw. IC Role / Device Role / Timing Role: USB device controller executing HID descriptor handling, debounced GPIO scanning, and low-latency report generation. Use Value: Integrated USB-PLL and endpoint buffers allow deterministic 1-ms polling response with zero external timing components. |
Use Scenario: Protocol translator converting SPI sensor data to USB CDC ACM virtual COM port for legacy PC software compatibility. IC Role / Device Role / Timing Role: Dual-role interface bridge: SPI master to sensor, USB CDC device to host, with DMA-assisted data forwarding. Use Value: 3-channel DMA moves sensor data directly from SPI RX buffer to USB IN endpoint - offloads CPU and ensures jitter-free streaming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal USB microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F5528IRGC | Identical package, pinout, and peripheral set; same 47 I/O, USB, ADC12, timers, and LPM4.5 current spec | Direct functional replacement; differs only in part numbering convention and minor mask revision | Select MSP430F5528IRGC when sourcing from distributors with active inventory of that designation |
| MSP430F5529IPN | 80-pin LQFP package; 63 I/O pins; adds 4 additional ADC channels (16 total) and 16 extra GPIO vs. MSP430A145IRGCR | Suitable for higher I/O or channel-count designs; requires PCB redesign due to larger footprint and different pin mapping | Choose MSP430F5529IPN only when additional analog inputs or GPIO are required and board layout allows LQFP-80 |
Compared with MSP430A145IRGCR, MSP430F5528IRGC offers identical functionality and drop-in compatibility, while MSP430F5529IPN trades compact VQFN packaging for expanded I/O and ADC resources - making the former ideal for supply continuity and the latter for feature-scaling.
Availability
MSP430A145IRGCR is available at Aetrix Electronics and suitable for portable sensor hubs, USB-capable data loggers, and low-power USB HID peripherals requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MSP430A145IRGCR 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 company delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer applications.
The MSP430F55xx product line - including MSP430A145IRGCR - was designed for ultra-low-power mixed-signal applications demanding integrated USB, high-precision analog, and rapid wake-from-sleep responsiveness in space-constrained devices.
FAQ
What is the maximum USB data rate supported by the MSP430A145IRGCR?
The MSP430A145IRGCR supports full-speed USB 2.0 operation at 12 Mbps. Its integrated USB-PHY, USB-PLL, and dedicated 3.3-V/1.8-V power system enable compliant host communication without external transceivers. This rate is sufficient for bulk transfers in data loggers and interrupt transfers in HID devices. The MSP430A145IRGCR does not support high-speed (480 Mbps) or low-speed (1.5 Mbps) USB modes.
Does the MSP430A145IRGCR include a hardware real-time clock (RTC)?
Yes, the MSP430A145IRGCR includes a dedicated RTC_A module with calendar mode, alarm interrupts, and battery-backed operation when supplied via the RTCVCC pin. It supports 32.768-kHz crystal input (XT1) for ±20 ppm accuracy over temperature and operates in LPM3 with only 1.9 µA typical current draw at 3.0 V - enabling precise timekeeping during extended sleep periods.
How many analog input channels does the 12-bit ADC on the MSP430A145IRGCR support?
The MSP430A145IRGCR's ADC12_A module supports 12 external analog input channels (A0–A11) plus two internal sources (temperature sensor and VREF generator). This matches the MSP430F5528IRGC configuration and enables simultaneous monitoring of multiple sensors without multiplexer hardware. Channel selection is managed via the ADC12MCTLx registers and autoscan mode.
What is the wake-up time from LPM4 to active mode for the MSP430A145IRGCR?
The MSP430A145IRGCR wakes from LPM4 (full RAM retention, supply supervisor active) to active mode in 3.5 µs typical, matching the FLL-stabilized DCO startup performance documented for the MSP430F5528 family. This fast wake-up enables responsive event-driven operation - for example, waking on GPIO interrupt to sample a sensor and return to LPM4 within tens of microseconds.
Is the MSP430A145IRGCR pin-compatible with other MSP430F55xx devices in the VQFN-64 package?
Yes, the MSP430A145IRGCR is pin-compatible with MSP430F5528IRGC, MSP430F5526IRGC, MSP430F5524IRGC, and MSP430F5522IRGC in the VQFN-64 (RGCR) package. All share identical pin functions, electrical characteristics, and thermal pad layout - allowing direct substitution in existing designs targeting the F5528 variant group.
MSP430A145IRGCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-VFQFN Exposed Pad
- Series:
- MSP430F5xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- I2C, IrDA, LINbus, SCI, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 47
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 10K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430A145IRGCR FAQ
1.How can I place an order for MSP430A145IRGCR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430A145IRGCR 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 MSP430A145IRGCR reliable?
The price and inventory of MSP430A145IRGCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430A145IRGCR is usually 5 days.
3.What payment methods are accepted for MSP430A145IRGCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430A145IRGCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430A145IRGCR?
MSP430A145IRGCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430A145IRGCR 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 MSP430A145IRGCR?
For technical support, including MSP430A145IRGCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430A145IRGCR requirements.
6.How does Aetrix verify that MSP430A145IRGCR is sourced from the original manufacturer or authorized distributors?
All MSP430A145IRGCR 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 MSP430A145IRGCR meets industry standards.
7.What is the process for return or replacement of MSP430A145IRGCR?
All MSP430A145IRGCR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430A145IRGCR, 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 MSP430A145IRGCR part is unused and in its original packaging.
Return procedure for MSP430A145IRGCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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