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Texas Instruments MSP430G2312IPW20
- Part No.:
- MSP430G2312IPW20
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2312IPW20.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:477
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Product details
Overview
MSP430G2312IPW20 from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in 20-pin TSSOP package, featuring 4 KB Flash, 256 B RAM, one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) for SPI/I²C, on-chip comparator, and eight programmable I/O pins - deployed in battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the MSP430G2312IPW20 datasheet, MSP430G2312IPW20 pinout, MSP430G2312IPW20 application, or MSP430G2312IPW20 equivalent, this page delivers verified functional scope, power-mode behavior, USI interface configuration, pin-specific peripheral mapping, and validated alternative options for low-power embedded design.
Technical Context
The MSP430G2312IPW20 implements a 16-bit CPU with seven addressing modes and constant generators for high code efficiency, paired with a basic clock module supporting internal DCO (calibrated at 1/8/12/16 MHz), LF oscillator, and external crystal input. It lacks ADC10 functionality - confirmed by Table 1 and repeated notes stating "ADC10 pin functions are available only on MSP430G2x52".
Its interrupt system supports 18 maskable sources including USI, Timer_A, Comparator_A+, and port interrupts (P1/P2), with vector addresses mapped to 0xFFFE–0xFFC0. Power management includes five software-selectable low-power modes (LPM0–LPM4), enabling sub-µA standby current (0.5 µA) and ultra-fast wake-up (<1 µs) via DCO stabilization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and 51-instruction set - enables single-cycle register operations and compact firmware for resource-constrained applications. |
| Memory | 4 KB Flash (main memory) + 256 B RAM - sufficient for sensor data preprocessing, communication stack handling, and low-overhead real-time control loops. |
| Supply Voltage | 1.8 V to 3.6 V - compatible with single-cell Li-ion, alkaline, or coin-cell batteries without external regulation. |
| Ultra-Low Power | Standby mode: 0.5 µA; Off mode (RAM retention): 0.1 µA - extends multi-year operation in energy-harvesting or infrequent-wake-up systems. |
| Timer | One 16-bit Timer_A with three capture/compare registers (TA0.0/TA0.1/TA0.2) - supports PWM generation, input capture timing, and interval-based event scheduling. |
| Communication | Universal Serial Interface (USI) supporting hardware SPI and I²C - eliminates bit-banging overhead and ensures deterministic timing for sensor interfacing. |
| Comparator | Comparator_A+ with eight selectable inputs (CA0–CA7) - enables battery voltage monitoring, threshold detection, and analog signal conditioning without ADC. |
Pinout & Package
Package: 20-pin TSSOP (PW), 0.65 mm pitch, body size 6.5 × 4.4 mm - suitable for space-constrained PCB layouts with standard reflow assembly.
| 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 - require local decoupling (100 nF) near pins 1 and 16 for noise immunity. |
| 2–9, 11–14, 17–20 | P1.x / P2.x I/O | Eight P1 pins (P1.0–P1.7) and eight P2 pins (P2.0–P2.7) - all individually configurable as GPIO, interrupt-capable inputs, or peripheral functions (e.g., USI, Timer, comparator). |
| 10, 11 | RST/NMI/SBWTDIO / TEST/SBWTCK | Spy-Bi-Wire debug interface - enables in-system programming and real-time debugging using two pins, no JTAG header required. |
| 18, 19 | XOUT/P2.7 / XIN/P2.6/TA0.1 | Crystal oscillator terminals (32 kHz) or general-purpose I/O - XIN also serves as Timer_A output TA0.1, enabling dual-use pin optimization. |
Key Features
| Feature | Design Value |
|---|---|
| Five Low-Power Modes (LPM0–LPM4) | Enables dynamic power scaling: LPM4 draws only 0.1 µA with RAM retention, ideal for wake-on-event sensor hubs requiring years of operation on a CR2032. |
| On-Chip Comparator_A+ | Supports eight analog inputs (CA0–CA7) with programmable hysteresis - replaces external comparators in battery-monitoring or overvoltage protection circuits. |
| USI Module (SPI/I²C) | Dedicated hardware block handles clock/data framing and shift logic - frees CPU cycles for sensor fusion or encryption tasks during serial communication. |
| Digitally Controlled Oscillator (DCO) | Four factory-calibrated frequencies (1/8/12/16 MHz) with <1 µs wake-up - eliminates need for external crystal in cost-sensitive timing-critical applications. |
| Capacitive-Touch Ready I/O | Each P1 pin supports pin-oscillator enable (P1SEL.0–P1SEL.7) - allows direct implementation of touch buttons or sliders without additional ICs. |
Applications
| Smart Sensor Node | Battery Supervision System |
|---|---|
Use Scenario: A wireless temperature/humidity node powered by a single AA battery, sampling sensors every 30 seconds and transmitting via BLE. IC Role / Device Role / Timing Role: MSP430G2312IPW20 acts as main controller, managing sensor reads via USI (I²C), executing low-power sleep/wake cycles, and driving RF interface timing via Timer_A. Use Value: Sub-µA LPM4 current extends battery life beyond 5 years; USI offloads I²C protocol handling, reducing active-mode CPU time by >40%. | Use Scenario: Industrial handheld tool with lithium-ion pack, requiring real-time cell voltage monitoring and low-battery warning. IC Role / Device Role / Timing Role: MSP430G2312IPW20 uses Comparator_A+ to monitor VBAT against internal reference, triggering interrupt-driven alert before shutdown. Use Value: Eliminates external voltage supervisor IC; comparator hysteresis prevents chatter during brownout transitions. |
| Capacitive Touch Interface | Low-Cost Data Logger |
Use Scenario: Appliance control panel with four touch keys and LED feedback, operating from 3.3 V rail. IC Role / Device Role / Timing Role: MSP430G2312IPW20 configures P1 pins as capacitive-touch oscillators, measuring frequency shift to detect finger proximity. Use Value: No external RC network or dedicated touch controller needed; integrated pin-oscillator reduces BOM count and layout area by 30%. | Use Scenario: Environmental logger recording temperature/pressure hourly onto microSD card using SPI interface. IC Role / Device Role / Timing Role: MSP430G2312IPW20 manages SPI communication with SD card, schedules timed measurements via Timer_A, and stores data in RAM before burst-write. Use Value: USI SPI mode provides reliable full-duplex transfer at up to 4 Mbps; 256 B RAM buffers one full measurement cycle before flash write. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2212IPW20 | 2 KB Flash, 128 B RAM, same peripherals and pinout - lower memory capacity limits firmware complexity. | Suitable for simpler polling-only sensor tasks without data buffering or protocol stacks. | Select when firmware size remains under 2 KB and RAM usage stays below 128 B. |
| MSP430G2352IPW20 | Includes 10-bit ADC10 (8-channel, 200 kSPS), otherwise identical Flash/RAM/peripherals - adds analog signal digitization capability. | Required when direct analog sensor interfacing (e.g., thermistor, potentiometer) replaces external ADC or comparator-based thresholding. | Choose when ADC functionality is mandatory; note ADC10 requires additional reference and sampling circuitry. |
Compared with MSP430G2212IPW20, the MSP430G2312IPW20 offers double RAM and Flash for enhanced data buffering and feature-rich firmware; versus MSP430G2352IPW20, it trades ADC10 for lower cost and reduced analog design complexity while retaining identical power, timing, and communication performance.
Availability
MSP430G2312IPW20 is available at Aetrix Electronics and suitable for smart sensor nodes, battery supervision systems, capacitive touch interfaces, and low-cost data loggers requiring stable component supply across production lifecycles.
Supply support for MSP430G2312IPW20 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 targets ultra-low-power embedded applications - designed specifically for battery-operated sensor systems, portable instrumentation, and energy-harvesting devices where microamp-level active and standby currents are critical.
FAQ
Does MSP430G2312IPW20 include an integrated ADC?
No, MSP430G2312IPW20 does not include an ADC. The datasheet explicitly states "ADC10 pin functions are available only on MSP430G2x52", and Table 1 confirms ADC10 channel count is "–" for all MSP430G2x12 variants including MSP430G2312IPW20. Analog sensing must use the on-chip Comparator_A+ or external ADC.
What debug interface does MSP430G2312IPW20 support?
MSP430G2312IPW20 supports Spy-Bi-Wire (SBW) via pins 10 (RST/NMI/SBWTDIO) and 11 (TEST/SBWTCK). This two-wire interface enables full in-system programming, breakpoint debugging, and real-time register inspection using TI's MSP-FET or compatible tools - no JTAG header or four-pin connection required.
Can MSP430G2312IPW20 drive capacitive touch buttons directly?
Yes, MSP430G2312IPW20 supports capacitive touch sensing on all P1.x pins via built-in pin-oscillator circuitry. Enabling P1SEL.x activates the oscillator; measuring frequency shift caused by finger proximity provides reliable touch detection - no external components or dedicated touch controller IC is needed for basic button or slider implementation.
What are the key differences between MSP430G2312IPW20 and MSP430G2412IPW20?
MSP430G2412IPW20 has 8 KB Flash and 256 B RAM, while MSP430G2312IPW20 has 4 KB Flash and same RAM. Both share identical peripherals (USI, Timer_A, Comparator_A+), pinout, and power specs. The larger Flash in MSP430G2412IPW20 accommodates more complex firmware, such as BLE stack integration or multi-sensor fusion algorithms.
Is MSP430G2312IPW20 compatible with the MSP430x2xx Family User's Guide (SLAU144)?
Yes, MSP430G2312IPW20 is fully covered by the MSP430x2xx Family User's Guide (SLAU144). The device belongs to the G2x12 series within the broader MSP430G2xx family, and SLAU144 documents all shared modules - including Timer_A, USI, Comparator_A+, basic clock system, and memory organization - with register-level detail applicable to MSP430G2312IPW20.
MSP430G2312IPW20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430G2xx
- Packaging:
- Tube
- 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:
- 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:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2312IPW20 FAQ
1.How can I place an order for MSP430G2312IPW20 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2312IPW20 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 MSP430G2312IPW20 reliable?
The price and inventory of MSP430G2312IPW20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2312IPW20 is usually 5 days.
3.What payment methods are accepted for MSP430G2312IPW20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2312IPW20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2312IPW20?
MSP430G2312IPW20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2312IPW20 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 MSP430G2312IPW20?
For technical support, including MSP430G2312IPW20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2312IPW20 requirements.
6.How does Aetrix verify that MSP430G2312IPW20 is sourced from the original manufacturer or authorized distributors?
All MSP430G2312IPW20 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 MSP430G2312IPW20 meets industry standards.
7.What is the process for return or replacement of MSP430G2312IPW20?
All MSP430G2312IPW20 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2312IPW20, 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 MSP430G2312IPW20 part is unused and in its original packaging.
Return procedure for MSP430G2312IPW20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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