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Texas Instruments MSP430G2102IN20
- Part No.:
- MSP430G2102IN20
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
MSP430G2102IN20.pdf
- Description:
- IC MCU 16BIT 1KB FLASH 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:210
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Product details
Overview
MSP430G2102IN20 from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in 20-pin PDIP package, featuring 1 kB Flash, 128 B RAM, one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) for SPI/I²C, and Spy-Bi-Wire debug interface. It operates from 1.8 V to 3.6 V and supports capacitive-touch I/O on up to 8 pins - ideal for battery-powered sensor nodes and simple control systems.
For engineers reviewing the MSP430G2102IN20 datasheet, MSP430G2102IN20 pinout, MSP430G2102IN20 application, or MSP430G2102IN20 equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative options - all aligned to TI's SLAS723H specification and device-specific configuration in the MSP430G2x02 family.
Technical Context
The MSP430G2102IN20 implements a 16-bit CPU with seven addressing modes and 51 instructions, executing register-to-register operations in one CPU cycle. Its clock system integrates a digitally controlled oscillator (DCO), internal low-frequency oscillator (VLO), and external crystal support (32 kHz), enabling sub-1 µs wake-up from LPM4.
It includes two 8-bit digital I/O ports (P1 and P2), each with individually configurable pullup/pulldown resistors and pin-oscillator enable for capacitive touch. The USI module supports synchronous serial communication via hardware-configurable SPI or I²C protocols without CPU intervention during transfers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers; enables efficient C code execution and deterministic interrupt latency. |
| Flash / RAM | 1 kB Flash program memory and 128 B RAM - sufficient for compact firmware with minimal data buffering needs. |
| Supply Voltage | 1.8 V to 3.6 V operation - supports direct connection to single-cell Li-ion, alkaline, or coin-cell batteries. |
| Ultra-Low Power | 0.1 µA in off mode (RAM retention); 0.5 µA in standby; 220 µA active at 1 MHz/2.2 V - extends battery life in intermittent-sensing applications. |
| Timer Module | One 16-bit Timer_A (TA0) with three capture/compare registers - supports PWM generation, input capture, and interval timing with independent interrupt capability per channel. |
| Communication | Universal Serial Interface (USI) supporting hardware SPI and I²C - reduces firmware overhead for sensor interfacing and peripheral control. |
| Debug Interface | Spy-Bi-Wire (2-wire JTAG) - enables full in-circuit debugging and flash programming using minimal PCB footprint and pin count. |
Pinout & Package
Package: 20-pin Plastic Dual In-line Package (PDIP), 0.300-inch body width, through-hole mounting. Compatible with standard DIP sockets and wave-soldering processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DVCC) | Digital supply voltage | Primary power rail for digital logic; requires local 0.1 µF decoupling to DVSS. |
| 2 (P1.0/TA0CLK/ACLK/A0) | Multi-function I/O | Configurable as timer clock input, auxiliary clock output, or analog input A0 - but ADC functionality is disabled on G2x02 devices. |
| 16 (DVSS) | Digital ground reference | Return path for digital I/O and core logic; must be connected to system ground plane with low impedance. |
| 19 (XIN/P2.6/TA0.1) | Crystal input / GPIO / timer output | Accepts 32.768 kHz crystal for real-time clock; also serves as TA0 compare output or general-purpose I/O when not used for oscillation. |
| 20 (DVSS) | Digital ground reference | Second DVSS pin for improved noise immunity and current return path separation. |
| 10 (RST/NMI/SBWTDIO) | Reset / NMI input / debug I/O | Active-low reset; non-maskable interrupt source; bidirectional data line for Spy-Bi-Wire programming and debugging. |
| 11 (TEST/SBWTCK) | Test mode select / debug clock | Enables JTAG/Spy-Bi-Wire test mode; provides clock signal for debug interface during programming and emulation. |
Key Features
| Feature | Design Value |
|---|---|
| Five low-power modes (LPM0–LPM4) | Enables dynamic power scaling: LPM4 draws only 0.1 µA with RAM retention - critical for energy-harvesting and long-life battery designs. |
| Brownout detector | Prevents erratic operation during brownout conditions by asserting reset below programmable threshold - ensures reliable startup and shutdown behavior. |
| Capacitive-touch I/O capability | Up to 8 pins support pin-oscillator-based touch sensing without external components - simplifies human-interface design in space-constrained applications. |
| On-chip emulation logic | Integrated Spy-Bi-Wire interface allows full-speed debugging, flash programming, and real-time variable inspection using only two pins - eliminates need for external debug probes. |
| Programmable code protection | Security fuse prevents unauthorized readout of Flash contents - protects firmware IP in production units deployed in unsecured environments. |
Applications
| Smart Sensor Node | Industrial Control Panel |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor collecting data every 30 seconds and transmitting via UART or RF link. IC Role / Device Role / Timing Role: Primary controller managing ADC sampling (via software-triggered conversions), sleep/wake scheduling, and serial protocol framing. Use Value: Ultra-low standby current (0.5 µA) and fast wake-up (<1 µs) minimize average power, enabling multi-year operation on CR2032 coin cell. | Use Scenario: Front-panel interface for HVAC or PLC with pushbuttons, LEDs, and status indicators. IC Role / Device Role / Timing Role: Local I/O manager handling button debouncing, LED PWM dimming, and RS-232/RS-485 level translation control. Use Value: Eight configurable I/O pins with integrated pullup/pulldown resistors eliminate external discrete components, reducing BOM cost and board area. |
| Capacitive Touch Remote | Low-Cost Data Logger |
Use Scenario: Wireless remote control with touch-sensitive keys replacing mechanical switches. IC Role / Device Role / Timing Role: Capacitive touch acquisition engine using built-in pin-oscillators and software correlation algorithms. Use Value: Native capacitive-touch I/O support on P1.0–P1.7 avoids dedicated touch ICs or external RC networks - cuts component count and firmware complexity. | Use Scenario: Standalone environmental logger recording temperature, light, and motion events to internal Flash at fixed intervals. IC Role / Device Role / Timing Role: Autonomous data acquisition unit performing timed sampling, Flash storage management, and low-power state transitions. Use Value: Integrated 16-bit Timer_A with interrupt-on-compare enables precise, jitter-free sampling intervals without CPU polling - improves timestamp accuracy and CPU efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2202IN20 | 2 kB Flash, 256 B RAM, same peripherals and pinout - no ADC10, identical power/performance profile. | Preferred where larger firmware image or extended RAM buffer is required without changing layout or firmware architecture. | Select when future firmware growth or additional data logging buffers are anticipated; maintains full hardware compatibility. |
| MSP430G2112IN20 | Same Flash/RAM as MSP430G2102IN20 but adds USI-compatible I²C/SPI and enhanced USI control registers - functionally identical pinout and timing. | Required when robust I²C slave operation or precise SPI clock phase control is needed beyond basic USI capability. | Choose when interoperability with I²C sensors or legacy SPI peripherals demands tighter timing control or error recovery features. |
Compared with MSP430G2102IN20, MSP430G2202IN20 offers double Flash and RAM for scalable firmware while retaining identical power behavior and pin compatibility; MSP430G2112IN20 enhances USI reliability for demanding serial bus environments - both require no PCB changes but differ in memory headroom and communication robustness.
Availability
MSP430G2102IN20 is available at Aetrix Electronics and suitable for smart sensor nodes, industrial control panels, capacitive touch remotes, and low-cost data loggers requiring stable component supply across prototyping, pilot production, and volume manufacturing phases.
Supply support for MSP430G2102IN20 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, reliability, and system-level integration.
The MSP430G2x02 product line targets ultra-low-power embedded control applications - optimized for battery-operated systems where longevity, small code size, and minimal external components are critical design constraints.
FAQ
Does MSP430G2102IN20 include an analog-to-digital converter (ADC)?
No, MSP430G2102IN20 does not include an ADC. It belongs to the MSP430G2x02 series, which lacks the ADC10 module present in the G2x32 variants. Pin functions labeled A0–A7 on MSP430G2102IN20 are reserved for future compatibility but are not functional as analog inputs. For ADC capability, consider MSP430G2132IN20 (1-channel 10-bit ADC) or other G2x32 family members.
What is the maximum operating frequency of MSP430G2102IN20?
The MSP430G2102IN20 supports internal DCO frequencies up to 16 MHz, calibrated at multiple voltages and temperatures and stored in information memory segment A. While the CPU executes instructions at 62.5 ns per cycle (16 MIPS theoretical peak), typical system clocking uses 1 MHz or lower for ultra-low-power operation - with full DCO range accessible via BCSCTL1 and DCOCTL register configuration.
Can MSP430G2102IN20 drive LEDs directly from its I/O pins?
Yes, MSP430G2102IN20 I/O pins can source or sink up to ±2 mA DC current per pin (absolute maximum rating), making them suitable for driving low-current LEDs with appropriate series resistors. However, sustained operation near limit degrades lifetime reliability; for higher brightness or multiplexed displays, external drivers or current-limiting circuitry are recommended. Port P1 and P2 support individual direction and output value control via P1DIR/P1OUT and P2DIR/P2OUT registers.
Is MSP430G2102IN20 compatible with the MSP430G2202IN20 PCB layout?
Yes, MSP430G2102IN20 is pin-compatible with MSP430G2202IN20 in the 20-pin PDIP package - identical pin functions, electrical characteristics, and footprint. Both share the same peripheral set (no ADC), Timer_A configuration, USI implementation, and power architecture. Firmware written for one will run unmodified on the other, though MSP430G2202IN20 provides double Flash (2 kB) and RAM (256 B) headroom.
How is debug and programming performed on MSP430G2102IN20?
Debug and programming of MSP430G2102IN20 is performed via the integrated Spy-Bi-Wire (SBW) interface using pins 10 (RST/NMI/SBWTDIO) and 11 (TEST/SBWTCK). This two-wire protocol supports full-speed emulation, flash programming, breakpoint setting, and real-time register inspection using TI's MSP-FET or compatible tools - no external voltage programming required, and security fuse enables code protection against unauthorized readout.
MSP430G2102IN20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- Series:
- MSP430G2xx
- Packaging:
- Bulk
- 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:
- 1KB (1K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
MSP430G2102IN20 FAQ
1.How can I place an order for MSP430G2102IN20 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2102IN20 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 MSP430G2102IN20 reliable?
The price and inventory of MSP430G2102IN20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2102IN20 is usually 5 days.
3.What payment methods are accepted for MSP430G2102IN20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2102IN20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2102IN20?
MSP430G2102IN20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2102IN20 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 MSP430G2102IN20?
For technical support, including MSP430G2102IN20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2102IN20 requirements.
6.How does Aetrix verify that MSP430G2102IN20 is sourced from the original manufacturer or authorized distributors?
All MSP430G2102IN20 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 MSP430G2102IN20 meets industry standards.
7.What is the process for return or replacement of MSP430G2102IN20?
All MSP430G2102IN20 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2102IN20, 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 MSP430G2102IN20 part is unused and in its original packaging.
Return procedure for MSP430G2102IN20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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