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Texas Instruments MSP430G2452IPW20R
- Part No.:
- MSP430G2452IPW20R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2452IPW20R.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,520
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Product details
Overview
MSP430G2452IPW20R from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 8 KB flash, 256 B RAM, a 10-bit 200-ksps ADC with internal reference and autoscan, one 16-bit Timer_A with three capture/compare registers, USI supporting SPI and I²C, and an 8-channel analog comparator. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430G2452IPW20R datasheet, MSP430G2452IPW20R pinout, MSP430G2452IPW20R application, or MSP430G2452IPW20R equivalent, key selection criteria include its TSSOP-20 package, integrated ADC10 with VREF+/VREF− pins, Spy-Bi-Wire debug interface, five low-power modes (including 0.1 µA off-mode with RAM retention), and capacitive-touch-capable I/O.
Technical Context
The MSP430G2452IPW20R implements a 16-bit CPU with seven addressing modes and constant generators for high code efficiency. Its clock system integrates a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz, plus LF oscillator and 32-kHz crystal support - enabling sub-1-µs wake-up from LPM4.
Peripherals are memory-mapped and accessible via all instructions. The ADC10 module supports automatic data transfer via DTC, while Timer_A3 provides PWM, input capture, and interval timing. USI handles synchronous serial communication without CPU overhead, and Comparator_A+ enables precision slope ADC and battery monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and 62.5-ns instruction cycle time - enables deterministic real-time control and compact firmware. |
| Flash / RAM | 8 KB flash memory with in-system programmability via Spy-Bi-Wire; 256 B RAM with retention in 0.1 µA off-mode - supports field updates and state preservation during deep sleep. |
| ADC10 Resolution & Speed | 10-bit SAR ADC with 200-ksps sampling rate and autoscan across up to 8 channels - delivers sufficient resolution and throughput for sensor signal digitization without external ADC. |
| Power Modes | Five software-selectable low-power modes; active mode draws 220 µA at 1 MHz/2.2 V, standby draws 0.5 µA, off-mode draws 0.1 µA with RAM retention - extends battery life in intermittent-sensing applications. |
| USI Interface | Universal Serial Interface supporting hardware SPI and I²C protocols - eliminates bit-banging overhead and ensures reliable communication with sensors and peripherals. |
| Comparator_A+ | 8-channel analog comparator with programmable hysteresis and output routing - enables battery voltage supervision, window detection, and slope ADC implementation. |
| Timer_A3 | 16-bit timer with three capture/compare registers and interrupt capability on overflow and each CCR - supports PWM generation, pulse-width measurement, and precise timing intervals. |
Pinout & Package
Package: 20-pin TSSOP (PW), 0.65 mm pitch, body size 6.5 × 4.4 mm, JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16, 15 | DVCC / AVCC / DVSS | Digital supply (1.8–3.6 V), analog supply (separate AVCC recommended), and digital ground - require local decoupling for noise-sensitive ADC operation. |
| 2, 3, 4, 5, 6, 7, 8, 9 | P1.0–P1.7 | 8-bit bidirectional port with individually configurable pullup/pulldown resistors, interrupt edge select, and capacitive-touch oscillator enable - supports sensor interfacing and low-power wake-up events. |
| 10, 11 | RST/NMI/SBWTDIO / TEST/SBWTCK | Spy-Bi-Wire debug interface pins - enable programming, debugging, and fuse-based security without external JTAG adapter. |
| 12, 13, 14, 17, 18, 19, 20 | XOUT/P2.7, XIN/P2.6/TA0.1, P2.0–P2.5, DVSS | Crystal oscillator inputs (XIN/XOUT), Timer_A compare output (TA0.1), six general-purpose I/O pins with pulldown enable, and ground - provide timing source and flexible peripheral expansion. |
| 5, 6, 7, 8, 9 | A0–A7 / VREF+/VREF− / CAOUT | ADC10 analog inputs (A0–A7), dedicated reference voltage terminals (VREF+/VREF−), and comparator output (CAOUT) - enable ratiometric measurements and independent reference sourcing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA off-mode current with RAM retention enables multi-year battery life in coin-cell-powered devices. |
| Integrated 10-bit ADC10 | Hardware autoscan across 8 channels with internal reference and sample-and-hold eliminates need for external ADC and reference ICs. |
| USI for SPI/I²C | Dedicated serial interface reduces firmware overhead and improves timing reliability versus software bit-banged implementations. |
| Capacitive-touch I/O | Up to 16 pins support capacitive sensing using built-in pin oscillators - enables touch-button interfaces without external components. |
| Brownout detector | On-chip reset circuit prevents erratic operation during power ramp-up/down - ensures robust startup and shutdown behavior. |
| Calibrated DCO | Four factory-trimmed DCO frequencies (1/8/12/16 MHz) stored in info memory - enables accurate timing without external crystal in cost-sensitive designs. |
Applications
| Smart Sensor Node | Portable Data Logger |
|---|---|
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and light data at 10-second intervals. IC Role / Device Role / Timing Role: Main controller executing sensor polling, ADC conversion, data preprocessing, and low-power sleep scheduling. Use Value: 0.1 µA off-mode and 220 µA active current minimize average power; integrated ADC10 and USI reduce BOM count by eliminating external converters and level shifters. | Use Scenario: Handheld device recording analog waveforms (e.g., vibration, ECG) for later USB upload. IC Role / Device Role / Timing Role: Real-time signal acquisition engine managing 200-ksps ADC sampling, DMA-like DTC transfers, and timestamped storage to flash. Use Value: ADC10 autoscan and DTC enable continuous sampling without CPU intervention; 8 KB flash stores >10 seconds of raw waveform data. |
| Battery Voltage Monitor | Low-Cost Industrial Controller |
Use Scenario: Supervising Li-ion battery pack voltage and triggering alerts at under-voltage thresholds. IC Role / Device Role / Timing Role: Analog comparator (Comp_A+) performing windowed voltage monitoring with hysteresis; wakes CPU only on threshold breach. Use Value: Comparator_A+ with VREF+/VREF− allows precise ratiometric monitoring; 0.5 µA standby current enables always-on supervision. | Use Scenario: Embedded PLC module controlling relays, reading switches, and communicating via I²C to HMI display. IC Role / Device Role / Timing Role: Central logic unit handling GPIO state management, debouncing, and protocol translation between discrete I/O and serial bus. Use Value: Eight programmable I/O pins with interrupt capability simplify switch scanning; USI I²C mode ensures interoperability with standard displays and sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2553IPW20R | 16 KB flash, 512 B RAM, enhanced USCI (UART/SPI/I²C), additional Timer_B - larger memory and richer peripherals. | Supports UART-based host communication and more complex firmware; suitable when >8 KB code space or UART is required. | Select when needing UART, larger program memory, or higher RAM for buffering; same TSSOP-20 footprint but not pin-compatible due to different peripheral mappings. |
| MSP430FR2476TRHBR | Ferroelectric RAM (64 KB FRAM), 8 KB RAM, no flash wear-out, 12-bit ADC, higher clock speed (16 MHz) - non-volatile memory with unlimited write endurance. | Enables frequent data logging without flash endurance concerns; better suited for high-write-cycle applications like black-box recorders. | Select for FRAM-based data logging or when 12-bit ADC resolution and zero-flash-wear are critical; different package (32-pin VQFN) and architecture. |
Compared with MSP430G2452IPW20R, MSP430G2553IPW20R offers expanded memory and UART but requires PCB layout changes, while MSP430FR2476TRHBR provides FRAM durability and higher-resolution ADC at the cost of package and toolchain divergence.
Availability
MSP430G2452IPW20R is available at Aetrix Electronics and suitable for smart sensor nodes, portable data loggers, battery voltage monitors, and low-cost industrial controllers requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2452IPW20R 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 was designed specifically for ultra-low-power sensing, measurement, and control applications where battery life, small footprint, and integrated analog functionality are critical.
FAQ
What is the maximum ADC10 sampling rate supported by the MSP430G2452IPW20R?
The MSP430G2452IPW20R supports a maximum ADC10 sampling rate of 200 ksps (kilo-samples per second) with internal reference and autoscan enabled. This rate is achievable when ADC10CLK is sourced from the DCO at 5 MHz and conversion timing parameters are optimized per the SLAS722G datasheet Section 6.3. The MSP430G2452IPW20R's ADC10 module includes sample-and-hold and data transfer controller (DTC) to sustain this throughput without CPU intervention.
Does the MSP430G2452IPW20R support UART communication?
No, the MSP430G2452IPW20R does not include a hardware UART peripheral. It features a Universal Serial Interface (USI) that supports only SPI and I²C protocols. For UART functionality, designers must implement software UART or select an alternative device such as the MSP430G2553IPW20R, which integrates USCI with UART capability. The MSP430G2452IPW20R's USI is optimized for synchronous communication and lacks start/stop bit generation or baud-rate timing logic required for UART.
What debug interface does the MSP430G2452IPW20R use, and what pins are required?
The MSP430G2452IPW20R uses the two-wire Spy-Bi-Wire (SBW) interface for programming and debugging. It requires only two pins: RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). This eliminates the need for a full 4-wire JTAG header, reducing PCB footprint and connector cost. The MSP430G2452IPW20R supports in-system programming, flash security fuse configuration, and real-time debugging via compatible tools such as MSP-FET or LaunchPad development kits.
Can the MSP430G2452IPW20R operate without an external crystal?
Yes, the MSP430G2452IPW20R can operate without an external crystal. Its basic clock module includes an internal digitally controlled oscillator (DCO) with four factory-calibrated frequencies (1/8/12/16 MHz), a very-low-power internal LF oscillator, and optional 32-kHz crystal support. The DCO enables full functionality - including ADC10, Timer_A, and USI - with sub-1-µs wake-up from LPM4. An external crystal is only required for applications demanding high-precision timing, such as RTC or strict UART baud-rate accuracy.
How many I/O pins with capacitive-touch capability does the MSP430G2452IPW20R support?
The MSP430G2452IPW20R supports up to 16 capacitive-touch-enabled I/O pins. These include all eight pins of Port 1 (P1.0–P1.7) and up to eight pins of Port 2 (P2.0–P2.5, P2.6, P2.7), as confirmed in the SLAS722G datasheet Feature List and Functional Block Diagram. Each pin features an individually programmable pin-oscillator enable bit (P1SEL.x / P2SEL.x), allowing hardware-accelerated capacitive sensing without external components or dedicated touch controller ICs. The MSP430G2452IPW20R's touch capability is implemented entirely within the MCU's analog and timing peripherals.
MSP430G2452IPW20R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430G2xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, SPI, USI
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2452IPW20R FAQ
1.How can I place an order for MSP430G2452IPW20R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2452IPW20R 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 MSP430G2452IPW20R reliable?
The price and inventory of MSP430G2452IPW20R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2452IPW20R is usually 5 days.
3.What payment methods are accepted for MSP430G2452IPW20R?
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4.How is shipping managed for MSP430G2452IPW20R?
MSP430G2452IPW20R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2452IPW20R 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 MSP430G2452IPW20R?
For technical support, including MSP430G2452IPW20R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2452IPW20R requirements.
6.How does Aetrix verify that MSP430G2452IPW20R is sourced from the original manufacturer or authorized distributors?
All MSP430G2452IPW20R 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 MSP430G2452IPW20R meets industry standards.
7.What is the process for return or replacement of MSP430G2452IPW20R?
All MSP430G2452IPW20R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2452IPW20R, 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 MSP430G2452IPW20R part is unused and in its original packaging.
Return procedure for MSP430G2452IPW20R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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