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Texas Instruments MSP430G2352IPW20
- Part No.:
- MSP430G2352IPW20
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2352IPW20.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:124
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Product details
Overview
MSP430G2352IPW20 from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring a 10-bit 200-ksps ADC, Universal Serial Interface (USI) supporting SPI and I²C, one 16-bit Timer_A with three capture/compare registers, on-chip comparator, and 4 KB flash/256 B RAM in 20-pin TSSOP package. It targets battery-powered sensor nodes and portable measurement systems requiring precise analog acquisition and low active/standby current.
For engineers reviewing the MSP430G2352IPW20 datasheet, MSP430G2352IPW20 pinout, MSP430G2352IPW20 application, or MSP430G2352IPW20 equivalent, key selection criteria include ADC10 channel count (8), USI interface flexibility, ultra-low standby current (0.5 µA), brownout detection, and Spy-Bi-Wire debug support - all confirmed for this exact TSSOP-20 variant.
Technical Context
The MSP430G2352IPW20 implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations. Its clock system integrates a digitally controlled oscillator (DCO) calibrated to 1 MHz, 8 MHz, 12 MHz, and 16 MHz, plus LF oscillator and 32-kHz crystal support - all selectable via BCSCTL registers.
Peripherals are memory-mapped and accessible via full instruction set; the ADC10 module includes internal reference, sample-and-hold, autoscan, and DTC support for autonomous conversions. The USI module provides hardware-level SPI/I²C protocol handling without CPU intervention during data transfer.
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 at 16 MHz |
| Flash / RAM | 4 KB flash program memory + 256 B RAM - sufficient for compact sensor firmware with calibration data storage |
| ADC Resolution | 10-bit SAR ADC with 8 input channels, 200-ksps sampling rate, and internal 1.5 V/2.5 V reference options |
| Low-Power Modes | Five software-selectable modes including LPM4 (0.1 µA off-mode with RAM retention) |
| Communication | USI module supporting master/slave SPI and I²C - no external level shifters needed for standard 3.3 V logic |
| Supply Range | 1.8 V to 3.6 V operation - compatible with single-cell Li-ion, two-cell alkaline, or regulated 3.3 V rails |
| Debug Interface | Spy-Bi-Wire 2-wire interface - enables programming and real-time debugging using TI MSP-FET or LaunchPad |
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 - decoupling required per TI layout guidelines |
| 2–9, 11–14, 17–20 | P1.x / P2.x I/O | Two 8-bit bidirectional ports: P1 supports capacitive touch, USI, Timer_A, ADC10, and comparator functions; P2 provides general-purpose I/O with pullup/down enable |
| 10, 11 | RST/NMI/SBWTDIO / TEST/SBWTCK | Spy-Bi-Wire debug interface - enables in-system programming and breakpoint debugging with minimal PCB footprint |
| 18, 19 | XOUT/P2.7 / XIN/P2.6/TA0.1 | Crystal oscillator terminals (32 kHz) or GPIO; TA0.1 supports Timer_A output compare - dual-use pins reduce routing complexity |
| 5, 6, 14 | A3/CA3/VREF− / A4/VREF+/CA4 / AVSS | Dedicated ADC reference inputs and analog ground - critical for stable 10-bit conversion accuracy across temperature |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low standby current | 0.5 µA in LPM3 mode - extends battery life in intermittently active sensor nodes beyond 5 years on CR2032 |
| Integrated ADC10 with autoscan | Automatically sequences through up to 8 analog inputs without CPU wake-up - reduces firmware overhead and power cycling |
| Calibrated DCO oscillator | Four factory-trimmed frequencies (1/8/12/16 MHz) stored in info memory - eliminates need for external crystal in cost-sensitive timing applications |
| On-chip comparator with hysteresis | Supports precision battery voltage monitoring and analog threshold detection - replaces discrete comparator + reference ICs |
| Capacitive-touch I/O capability | Up to 16 pins support charge-transfer sensing - enables touch buttons or sliders without dedicated controller IC |
Applications
| Environmental Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor logging data every 30 seconds and transmitting via BLE module. IC Role / Device Role / Timing Role: Main controller executing ADC sampling, data preprocessing, and SPI communication with radio IC; uses LPM3 between samples. Use Value: 0.5 µA standby current and integrated 10-bit ADC eliminate external signal conditioning, reducing BOM count by 3 components. | Use Scenario: Wearable pulse oximeter acquiring analog photodiode signals and computing SpO₂ in real time. IC Role / Device Role / Timing Role: Analog front-end controller performing synchronized dual-channel ADC sampling, digital filtering, and UART output to host MCU. Use Value: ADC10 autoscan and DTC enable continuous 100-Hz sampling with zero CPU load - preserves processing headroom for algorithm execution. |
| Smart Utility Meter Interface | Industrial Control Panel |
Use Scenario: Sub-metering module interfacing with shunt-based current sensors and RS-485 communications. IC Role / Device Role / Timing Role: Isolated analog acquisition unit converting mV-level shunt voltages to digital values, then formatting packets for Modbus RTU transmission. Use Value: Internal 2.5 V reference and 10-bit resolution provide ±0.5% full-scale accuracy over −40°C to 85°C - meets ANSI C12.20 Class 0.5 requirements. | Use Scenario: Local HMI panel with tactile buttons, LED indicators, and I²C-connected display driver. IC Role / Device Role / Timing Role: System manager handling button debouncing, LED PWM dimming, and I²C display updates while maintaining low idle power. Use Value: USI's hardware I²C master mode ensures glitch-free display refresh at 100 kHz clock - avoids bit-banging timing errors in interrupt-driven firmware. |
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 |
|---|---|---|---|
| MSP430G2452IPW20 | 8 KB flash, 256 B RAM, same peripherals - adds 4 KB code space for larger firmware or bootloader | Required when application needs >4 KB flash (e.g., OTA update support or complex sensor fusion) | Select if future firmware expansion or field-upgrade capability is mandatory; identical pinout and peripheral register map |
| MSP430FR2355IPW20 | Ferroelectric RAM (6.25 KB FRAM), 2 KB RAM, enhanced USCI (UART/SPI/I²C), no ADC10 - uses FRAM for zero-wait-state execution and infinite write endurance | Better suited for high-write-cycle logging or real-time data buffering where flash endurance is limiting | Choose for applications demanding >10⁶ write cycles to nonvolatile memory or deterministic code execution - requires minor peripheral initialization changes |
Compared with MSP430G2452IPW20, the MSP430G2352IPW20 trades flash capacity for lower cost and smaller die size while retaining identical ADC10, USI, and low-power performance; versus MSP430FR2355IPW20, it offers proven flash reliability and simpler migration from legacy MSP430G2x designs but lacks FRAM's write endurance and speed advantages.
Availability
MSP430G2352IPW20 is available at Aetrix Electronics and suitable for environmental sensing, portable medical devices, and industrial control panels requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2352IPW20 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 over 50 years of microcontroller innovation.
The MSP430G2xx family was designed specifically for ultra-low-power portable measurement and sensor applications - prioritizing sub-µA sleep currents, integrated analog peripherals, and energy-efficient 16-bit processing.
FAQ
What is the maximum ADC10 sampling rate supported by the MSP430G2352IPW20?
The MSP430G2352IPW20 supports a maximum ADC10 sampling rate of 200 ksps under optimal conditions: VCC ≥ 2.2 V, ADC10CLK = 5 MHz, and internal reference enabled. This rate is achievable only in single-channel mode with minimal conversion delay; autoscan across all 8 channels reduces effective throughput due to setup overhead. The MSP430G2352IPW20 datasheet specifies this limit in Section 6.3 under "ADC10 Electrical Characteristics."
Does the MSP430G2352IPW20 support hardware UART communication?
No, the MSP430G2352IPW20 does not include a dedicated UART peripheral. It features a Universal Serial Interface (USI) module that supports SPI and I²C protocols in hardware, but UART must be implemented in firmware using Timer_A and GPIO pins. This is confirmed in the device's functional block diagram and Table 1 of the SLAS722G datasheet, which lists USI - not USCI - as the sole serial interface.
Can the MSP430G2352IPW20 operate from a 1.8 V supply while running at 16 MHz?
No, the MSP430G2352IPW20 cannot sustain 16 MHz operation at 1.8 V. According to the "DC Characteristics" table in SLAS722G, the maximum allowed MCLK frequency at 1.8 V is 1 MHz. At 3.6 V, the DCO supports up to 16 MHz. This voltage-frequency dependency is enforced by the DCO calibration data stored in information memory segment A and verified in TI's MSP430x2xx Family User's Guide (SLAU144).
How many I/O pins on the MSP430G2352IPW20 support capacitive touch sensing?
The MSP430G2352IPW20 supports capacitive touch sensing on up to 16 I/O pins - all eight pins of Port 1 (P1.0–P1.7) and all eight pins of Port 2 (P2.0–P2.7). This capability is enabled via the PinOsc module and documented in Section 2.4 of the SLAS722G datasheet. Each pin can be individually configured for touch operation using the PxIES and PxIFG registers.
Is the MSP430G2352IPW20 pin-compatible with the MSP430G2452IPW20?
Yes, the MSP430G2352IPW20 is fully pin-compatible with the MSP430G2452IPW20 in the 20-pin TSSOP (PW20) package. Both share identical pin functions, electrical characteristics, and register-level peripheral mapping. The only difference is flash size (4 KB vs. 8 KB); all other peripherals - including ADC10, USI, Timer_A, comparator, and debug interface - are functionally identical and require no PCB or firmware changes for substitution.
MSP430G2352IPW20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430G2xx
- Packaging:
- Bulk
- 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:
- 4KB (4K 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:
MSP430G2352IPW20 FAQ
1.How can I place an order for MSP430G2352IPW20 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2352IPW20 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 MSP430G2352IPW20 reliable?
The price and inventory of MSP430G2352IPW20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2352IPW20 is usually 5 days.
3.What payment methods are accepted for MSP430G2352IPW20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2352IPW20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2352IPW20?
MSP430G2352IPW20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2352IPW20 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 MSP430G2352IPW20?
For technical support, including MSP430G2352IPW20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2352IPW20 requirements.
6.How does Aetrix verify that MSP430G2352IPW20 is sourced from the original manufacturer or authorized distributors?
All MSP430G2352IPW20 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 MSP430G2352IPW20 meets industry standards.
7.What is the process for return or replacement of MSP430G2352IPW20?
All MSP430G2352IPW20 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2352IPW20, 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 MSP430G2352IPW20 part is unused and in its original packaging.
Return procedure for MSP430G2352IPW20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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