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Texas Instruments MSP430G2452IN20
- Part No.:
- MSP430G2452IN20
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
MSP430G2452IN20.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,370
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Product details
Overview
MSP430G2452IN20 from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in 20-pin PDIP packaging, featuring 16 KB flash, 256 B RAM, a 10-bit 200-ksps ADC with internal reference and autoscan, USI supporting SPI/I²C, one 16-bit Timer_A with three capture/compare registers, and an on-chip comparator. It targets battery-powered sensor nodes and portable measurement systems requiring sub-µA standby operation.
For engineers reviewing the MSP430G2452IN20 datasheet, MSP430G2452IN20 pinout, MSP430G2452IN20 application, or MSP430G2452IN20 equivalent, key selection criteria include its 20-pin PDIP package compatibility, integrated ADC10 channel count (8 analog inputs), ultra-low active current (220 µA at 1 MHz), Spy-Bi-Wire debug interface, and support for capacitive-touch I/O up to 16 pins.
Technical Context
The MSP430G2452IN20 implements a 16-bit RISC CPU with seven addressing modes and constant generators for high code efficiency. Its clock system integrates a digitally controlled oscillator (DCO) calibrated to 1–16 MHz, plus LF and VLO oscillators, enabling wake-up from LPM4 in under 1 µs.
Peripherals include a universal serial interface (USI) configurable for SPI or I²C, a comparator with eight input channels, and Timer_A3 with three capture/compare registers supporting PWM, interval timing, and input capture. The ADC10 module supports autoscan across eight analog inputs with internal reference and DMA-like data transfer control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 62.5-ns instruction cycle time and 16 general-purpose registers |
| Flash / RAM | 16 KB flash memory for program storage; 256 B RAM for runtime variables and stack |
| ADC Resolution | 10-bit SAR ADC with 200-ksps sampling rate, internal reference, sample-and-hold, and autoscan across 8 channels |
| Power Consumption | 220 µA active at 1 MHz/2.2 V; 0.5 µA standby; 0.1 µA off mode with RAM retention |
| Timer Resource | One 16-bit Timer_A with three capture/compare registers (TA0.0, TA0.1, TA0.2) and interrupt capability |
| Communication Interface | Universal Serial Interface (USI) supporting hardware SPI and I²C protocols with dedicated SDO/SDI/SCL/SDA pins |
| Package Type | 20-pin plastic dual in-line package (PDIP), through-hole mountable with 0.3-inch width and standard DIP footprint |
Pinout & Package
20-pin PDIP (N package), 0.3-inch body width, through-hole mounting. Pin 1 is top-left corner when notch faces up; pin numbering follows standard DIP convention (counter-clockwise).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DVCC) | Digital supply voltage | Primary 1.8–3.6 V power rail for digital core and I/O ports |
| 2 (P1.0/TA0CLK/ACLK/A0/CA0) | Multi-function I/O | Configurable as timer clock input, ACLK output, ADC input A0, or comparator CA0 |
| 5 (P1.3/ADC10CLK/CAOUT/VREF-/VEREF-/A3/CA3) | Analog & comparator I/O | Provides ADC10 conversion clock output, comparator output, negative reference, and analog input A3 |
| 14 (DVSS) | Digital ground | Reference return path for DVCC and all digital logic and I/O circuits |
| 16 (RST/NMI/SBWTDIO) | Reset & debug I/O | Active-low reset input, non-maskable interrupt, and bidirectional Spy-Bi-Wire debug data line |
| 17 (TEST/SBWTCK) | Debug clock | Test mode select and Spy-Bi-Wire debug clock input for programming and emulation |
| 19 (XIN/P2.6/TA0.1) | Oscillator & timer I/O | Crystal oscillator input or general-purpose I/O; also serves as Timer_A compare output TA0.1 |
| 20 (DVSS) | Digital ground | Second DVSS connection for improved noise immunity and grounding integrity |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Five software-selectable low-power modes including LPM4 (0.1 µA with RAM retention) for extended battery life |
| Integrated analog subsystem | 10-bit ADC10 with internal reference, autoscan, and 8-channel input multiplexing eliminates external signal conditioning |
| Capacitive-touch I/O | Up to 16 GPIO pins support capacitive-touch sensing via built-in pin-oscillator circuitry-no external components required |
| On-chip debugging | Spy-Bi-Wire interface enables full-speed in-system programming and real-time debugging using only two pins (RST and TEST) |
| Calibrated DCO | Digitally controlled oscillator factory-calibrated at four frequencies (1/8/12/16 MHz) stored in information memory segment A |
Applications
| Smart Sensor Node | Portable Data Logger |
|---|---|
Use Scenario: Battery-operated environmental sensor collecting temperature, humidity, and light levels at 10-second intervals over six months. IC Role / Device Role / Timing Role: Primary controller executing sensor polling, ADC conversion, data filtering, and low-power sleep scheduling via LPM3/LPM4. Use Value: 0.5 µA standby current and 1 µs wake-up enable multi-month operation on a single CR2032 coin cell. | Use Scenario: Handheld device recording analog waveforms from industrial transducers into flash memory for later USB upload. IC Role / Device Role / Timing Role: Real-time ADC acquisition engine with autoscan across 8 channels, DMA-like data transfer, and flash write management. Use Value: Integrated 10-bit ADC10 with 200-ksps sampling and internal reference eliminates need for external ADC and reference ICs. |
| Capacitive-Touch Interface | Low-Cost Industrial Monitor |
Use Scenario: Appliance control panel with 12-button touch overlay replacing mechanical switches in humid kitchen environments. IC Role / Device Role / Timing Role: Dedicated capacitive-touch processor scanning electrodes using built-in pin-oscillators and digital filtering firmware. Use Value: 16-capacitive-touch-enabled I/O pins allow direct electrode connection without external RC networks or dedicated touch ICs. | Use Scenario: DIN-rail mounted HVAC monitor measuring supply voltage, current, and temperature with local LED status and RS-485 reporting. IC Role / Device Role / Timing Role: System-on-chip managing analog sensing, digital I/O, UART communication via USI, and brownout protection. Use Value: On-chip comparator, USI (I²C/SPI), and brownout detector reduce BOM count by eliminating discrete supervisor, bus interface, and analog monitor ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2553IPW20 | 20-pin TSSOP; 16 KB flash, 512 B RAM, 10-bit ADC with 12-channel input, USCI (enhanced USI), and additional Timer_B | Higher RAM and ADC channel count suit more complex sensor fusion or protocol stack tasks | Select when needing >256 B RAM or >8 ADC inputs; requires TSSOP layout and may increase cost |
| MSP430F2274IDAR | 38-pin TSSOP; 32 KB flash, 1 KB RAM, 12-bit ADC, hardware UART, and enhanced peripheral set | Targeted at higher-performance embedded control with serial communication and larger code footprint | Choose for UART-based host interfacing or when >16 KB flash is required; incompatible pinout and package |
Compared with MSP430G2553IPW20 and MSP430F2274IDAR, the MSP430G2452IN20 offers lowest system cost and smallest PCB footprint in PDIP form, optimized for simple, ultra-low-power sensor acquisition where 8 ADC channels and 256 B RAM are sufficient.
Availability
MSP430G2452IN20 is available at Aetrix Electronics and suitable for smart sensor nodes, portable data loggers, capacitive-touch interfaces, and low-cost industrial monitors requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2452IN20 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 for industrial, automotive, and consumer markets.
The MSP430G2xx family delivers ultra-low-power mixed-signal microcontrollers targeting battery-powered measurement, sensing, and human-interface applications where energy efficiency and integration are critical.
FAQ
What is the maximum operating frequency of the MSP430G2452IN20?
The MSP430G2452IN20 features a digitally controlled oscillator (DCO) factory-calibrated to operate at up to 16 MHz. This maximum frequency is achievable across the full 1.8–3.6 V supply range and specified temperature conditions, enabling high-speed instruction execution while maintaining ultra-low-power characteristics in active mode.
Does the MSP430G2452IN20 support hardware UART communication?
No, the MSP430G2452IN20 does not include a hardware UART peripheral. It provides a Universal Serial Interface (USI) module that supports SPI and I²C protocols only. UART functionality must be implemented in software using timer-generated bit-banging or by adding an external UART-to-SPI/I²C bridge IC.
How many analog input channels does the ADC10 module support on the MSP430G2452IN20?
The ADC10 module on the MSP430G2452IN20 supports eight analog input channels (A0–A7), accessible via P1.0, P1.1, P1.2, P1.3, P1.4, P1.5, P1.6, and P1.7. These are confirmed in Table 2 of the SLAS722G datasheet and enabled by setting ADC10AE0 register bits accordingly.
Is the MSP430G2452IN20 pin-compatible with other devices in the MSP430G2x52 family?
Yes, the MSP430G2452IN20 shares identical pin functions and electrical characteristics with other 20-pin variants in the MSP430G2x52 series, including MSP430G2452IPW20 (TSSOP) and MSP430G2452IRSA16 (QFN). Pin mapping for all 20-pin packages matches per Table 2 in SLAS722G, though mechanical dimensions and soldering methods differ.
What debug interface does the MSP430G2452IN20 use, and how many pins are required?
The MSP430G2452IN20 uses the Spy-Bi-Wire (SBW) debug interface, requiring only two pins: RST/NMI/SBWTDIO (pin 16) and TEST/SBWTCK (pin 17). This two-wire interface supports full-speed in-system programming, real-time debugging, and flash memory access without external voltage programming sources.
MSP430G2452IN20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- Series:
- MSP430G2xx
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
MSP430G2452IN20 FAQ
1.How can I place an order for MSP430G2452IN20 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2452IN20 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 MSP430G2452IN20 reliable?
The price and inventory of MSP430G2452IN20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2452IN20 is usually 5 days.
3.What payment methods are accepted for MSP430G2452IN20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2452IN20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2452IN20?
MSP430G2452IN20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2452IN20 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 MSP430G2452IN20?
For technical support, including MSP430G2452IN20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2452IN20 requirements.
6.How does Aetrix verify that MSP430G2452IN20 is sourced from the original manufacturer or authorized distributors?
All MSP430G2452IN20 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 MSP430G2452IN20 meets industry standards.
7.What is the process for return or replacement of MSP430G2452IN20?
All MSP430G2452IN20 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2452IN20, 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 MSP430G2452IN20 part is unused and in its original packaging.
Return procedure for MSP430G2452IN20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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