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Texas Instruments MSP430G2252IPW20R
- Part No.:
- MSP430G2252IPW20R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2252IPW20R.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,845
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Product details
Overview
MSP430G2252IPW20R from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring a 10-bit ADC, Universal Serial Interface (USI) for SPI/I²C, one 16-bit Timer_A with three capture/compare registers, on-chip comparator, and 256 B RAM with 2 KB flash. It operates from 1.8 V to 3.6 V and supports five power-saving modes - ideal for battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430G2252IPW20R datasheet, MSP430G2252IPW20R pinout, MSP430G2252IPW20R application, or MSP430G2252IPW20R equivalent, key selection criteria include ADC10 channel count (2-channel analog input), TSSOP-20 package compatibility, Spy-Bi-Wire debug interface support, and verified brownout detection with internal DCO calibration at 1/8/12/16 MHz.
Technical Context
The MSP430G2252IPW20R 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), internal low-frequency oscillator (VLO), and external 32-kHz crystal support - all configurable via BCSCTL registers.
Peripherals are memory-mapped and accessible via full instruction set; the ADC10 module includes internal reference, sample-and-hold, autoscan, and DMA-capable data transfer controller (DTC), while USI provides hardware-level SPI master/slave and I²C master functionality without CPU overhead.
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 at 16 MHz |
| Flash / RAM | 2 KB flash program memory and 256 B RAM - sufficient for compact firmware with ADC+USI+Timer_A control logic |
| ADC10 Resolution | 10-bit SAR ADC with 2-channel analog input (A0–A1), internal 1.5 V/2.5 V reference, and autoscan mode |
| Power Consumption | 220 µA active @ 1 MHz/2.2 V; 0.5 µA standby; 0.1 µA off-mode with RAM retention |
| Timer Resource | One 16-bit Timer_A (TA0) with three capture/compare registers (TA0.0–TA0.2) supporting PWM, interval timing, and input capture |
| Communication | Universal Serial Interface (USI) supporting SPI (3-wire/4-wire) and I²C master modes - no dedicated UART or USB |
| Debug Interface | Spy-Bi-Wire (2-pin) interface compatible with MSP-FET and LaunchPad debuggers - no full JTAG support |
Pinout & Package
TSSOP-20 package (PW suffix), 0.65 mm pitch, 6.5 mm × 4.4 mm body size, thermally enhanced with exposed pad (not electrically connected in this variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16, 15 | DVCC / AVCC / DVSS | Digital supply (1.8–3.6 V), analog supply (tied to DVCC), and digital ground - requires local decoupling per TI layout guidelines |
| 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 enable - P1.0–P1.5 support ADC10 inputs A0–A5 |
| 10, 11, 12, 13, 14 | P2.0–P2.5 | 6-bit general-purpose I/O (no ADC function); pulldown resistors must be enabled via P2REN.x = 1 for stable operation |
| 17, 18, 19 | RST/NMI/SBWTDIO, TEST/SBWTCK, XIN/P2.6 | Spy-Bi-Wire debug interface (2-pin) and crystal oscillator input - XIN supports external 32-kHz crystal or digital clock source |
| 20 | DVSS | Digital ground reference - must be connected to system ground plane with low-inductance path |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Sub-µA standby and off modes enable multi-year battery life in coin-cell–powered sensor endpoints |
| Integrated ADC10 with autoscan | Hardware-triggered sequential conversion across up to 2 channels without CPU intervention - reduces firmware complexity |
| USI for SPI/I²C | Single peripheral supports both protocols via software-configurable control registers - eliminates need for separate protocol ICs |
| Brownout detector | On-chip voltage monitor triggers reset below programmable threshold - ensures reliable startup and runtime behavior |
| Calibrated DCO | Factory-trimmed DCO frequencies at 1/8/12/16 MHz stored in info memory - enables precise timing without external crystal |
Applications
| Temperature Sensor Node | Smart Meter Interface |
|---|---|
Use Scenario: Battery-powered ambient temperature monitoring using thermistor or diode-based analog sensing. IC Role / Device Role / Timing Role: MSP430G2252IPW20R performs analog acquisition (ADC10 on A0/A1), digital signal conditioning, low-power sleep scheduling, and SPI transmission to a concentrator MCU. Use Value: 220 µA active current and 0.5 µA standby enable >5-year operation on CR2032; integrated comparator supports wake-on-threshold events. | Use Scenario: Sub-metering module interfacing with utility meter pulse outputs and RS-485 backhaul. IC Role / Device Role / Timing Role: MSP430G2252IPW20R acts as pulse counter and protocol translator - converting opto-isolated kWh pulses into I²C-accessible registers for host MCU readout. Use Value: USI I²C master mode drives local sensor bus; Timer_A captures pulse width and period with sub-µs resolution for tariff calculation. |
| Capacitive Touch Panel | Industrial IO-Link Sensor |
Use Scenario: Low-cost touch-enabled control panel for HVAC or lighting systems with <10 keys. IC Role / Device Role / Timing Role: MSP430G2252IPW20R executes capacitive-touch scan using PinOsc on P1.x pins, debounces results, and communicates status via SPI to main controller. Use Value: On-chip PinOsc eliminates external RC networks; 256 B RAM stores baseline calibration and touch thresholds per key. | Use Scenario: IO-Link device-side interface for analog pressure/temperature transducers in factory automation. IC Role / Device Role / Timing Role: MSP430G2252IPW20R conditions analog signals (ADC10), manages cyclic data exchange via USI SPI (to IO-Link master PHY), and handles parameterization over I²C. Use Value: Dual USI modes allow concurrent SPI (PHY interface) and I²C (parameter storage) - no external bridge IC required. |
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 | 4-channel ADC10, 8 KB flash, same TSSOP-20 package and pinout | Supports higher analog channel count and larger firmware - suitable when scaling sensor count or adding communication stacks | Select when >2 ADC inputs or >2 KB code space required; identical debug and power architecture simplifies migration |
| MSP430FR2111IPW16 | Ferroelectric RAM (FRAM), 1 KB FRAM + 512 B RAM, 16-pin TSSOP, no ADC10 - only comparator | Lacks ADC but offers faster write endurance and lower active power (112 µA/MHz); uses different clock and peripheral register map | Choose for non-analog, high-write-cycle applications like event logging; not drop-in due to missing ADC and pin count reduction |
Compared with MSP430G2452IPW20, the MSP430G2252IPW20R trades ADC channel count and flash capacity for cost-sensitive designs; versus MSP430FR2111IPW16, it retains essential analog acquisition capability at the expense of FRAM benefits and reduced memory density.
Availability
MSP430G2252IPW20R is available at Aetrix Electronics and suitable for temperature sensor nodes, smart meter interfaces, capacitive touch panels, and industrial IO-Link sensors requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2252IPW20R 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 targets ultra-low-power portable and battery-operated applications - designed specifically for extended battery life in sensor, metering, and human-interface devices where energy efficiency outweighs raw performance.
FAQ
What is the maximum ADC10 sampling rate supported by the MSP430G2252IPW20R?
The MSP430G2252IPW20R supports a maximum ADC10 conversion rate of 200 ksps under optimal conditions: 10-bit resolution, internal reference, and ADC10CLK sourced from SMCLK at 5 MHz. Actual throughput depends on sampling time, reference settling, and autoscan configuration - typical sustained rate is ~100 ksps in continuous mode with 2-channel input.
Does the MSP430G2252IPW20R support hardware UART functionality?
No, the MSP430G2252IPW20R does not include a dedicated UART peripheral. Communication is handled exclusively through the Universal Serial Interface (USI), which supports SPI and I²C protocols. UART emulation is possible via bit-banged GPIO or Timer_A output compare, but lacks hardware framing, parity, or automatic baud generation.
Can the MSP430G2252IPW20R operate without an external crystal?
Yes, the MSP430G2252IPW20R can operate entirely from its internal digitally controlled oscillator (DCO), which is factory-calibrated at 1/8/12/16 MHz. External crystals are optional - used only when higher frequency stability (e.g., for RTC or precise timing) is required. The internal VLO (12 kHz) supports low-power ACLK operation.
What debug interface does the MSP430G2252IPW20R use, and is JTAG supported?
The MSP430G2252IPW20R uses the 2-pin Spy-Bi-Wire (SBW) interface for programming and debugging - compatible with MSP-FET, MSP430 LaunchPad, and TI Cloud Debugger. Full 4-wire JTAG is not supported; SBW shares pins with RST/NMI and TEST/SBWTCK, requiring no additional PCB footprint beyond standard reset circuitry.
How many I/O pins on the MSP430G2252IPW20R support analog input functions?
The MSP430G2252IPW20R supports analog input on two dedicated pins: P1.0 (A0) and P1.1 (A1). These are the only pins mapped to the ADC10 module per Table 1 and Terminal Functions documentation. Other P1.x pins may serve as digital I/O or USI/Timer functions but lack ADC channel assignment in this variant.
MSP430G2252IPW20R 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:
- Not 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:
- 2KB (2K 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:
MSP430G2252IPW20R FAQ
1.How can I place an order for MSP430G2252IPW20R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2252IPW20R 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 MSP430G2252IPW20R reliable?
The price and inventory of MSP430G2252IPW20R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2252IPW20R is usually 5 days.
3.What payment methods are accepted for MSP430G2252IPW20R?
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MSP430G2252IPW20R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2252IPW20R 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 MSP430G2252IPW20R?
For technical support, including MSP430G2252IPW20R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2252IPW20R requirements.
6.How does Aetrix verify that MSP430G2252IPW20R is sourced from the original manufacturer or authorized distributors?
All MSP430G2252IPW20R 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 MSP430G2252IPW20R meets industry standards.
7.What is the process for return or replacement of MSP430G2252IPW20R?
All MSP430G2252IPW20R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2252IPW20R, 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 MSP430G2252IPW20R part is unused and in its original packaging.
Return procedure for MSP430G2252IPW20R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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