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Texas Instruments MSP430G2333IPW20R
- Part No.:
- MSP430G2333IPW20R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2333IPW20R.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,909
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Product details
Overview
MSP430G2333IPW20R from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 4 KB flash, 256 B RAM, a 10-bit 200-ksps ADC with 8 channels and internal reference, two 16-bit Timer_A modules, USCI (UART/I²C/SPI), and capacitive-touch-capable I/O - deployed in battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430G2333IPW20R datasheet, MSP430G2333IPW20R pinout, MSP430G2333IPW20R application, or MSP430G2333IPW20R equivalent, key selection criteria include its 20-pin TSSOP package, 1.8–3.6 V supply range, sub-1 µs wake-up from LPM3/LPM4, Spy-Bi-Wire debug interface, and integrated ADC with autoscan for analog signal acquisition in space-constrained embedded designs.
Technical Context
The MSP430G2333IPW20R implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO) calibrated to 1 MHz, 8 MHz, 12 MHz, and 16 MHz - enabling deterministic timing without external crystals. Its clock system supports multiple sources: internal VLO (12 kHz), 32-kHz crystal (XT1), and external digital clock input.
Peripherals are tightly synchronized via the USCI module supporting LIN-compliant UART with automatic baud-rate detection, IrDA encoding/decoding, synchronous SPI (master/slave), and I²C master/slave modes - all sharing common control registers and interrupt vectors to minimize firmware overhead in resource-limited applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and constant generators; enables high code efficiency and low-cycle-count execution for real-time sensor processing. |
| Flash / RAM | 4 KB flash memory (in-system programmable, no external VPP required); 256 B RAM - sufficient for compact firmware with ADC data buffering and communication stacks. |
| ADC Performance | 10-bit SAR ADC with 200 ksps sampling rate, 8-channel autoscan, internal 1.5 V reference, and temperature sensor - supports simultaneous multi-sensor analog acquisition without external components. |
| Power Modes | Five low-power modes including LPM3 (0.5 µA standby) and LPM4 (0.1 µA RAM retention); wake-up from LPM3/LPM4 in <1 µs - critical for duty-cycled battery operation. |
| Supply Range | 1.8 V to 3.6 V operation; flash programming requires ≥2.2 V - compatible with single-cell Li-ion, LiFePO₄, or dual-AA alkaline power rails. |
| Debug Interface | Spy-Bi-Wire (2-wire JTAG) interface with on-chip emulation logic - enables full-speed debugging and flash programming using minimal PCB footprint and pins. |
| Package | TSSOP-20 (6.5 mm × 4.4 mm, 0.65 mm pitch); RoHS-compliant, surface-mountable, and validated for reflow per JEDEC J-STD-020. |
Pinout & Package
TSSOP-20 package with 0.65 mm lead pitch; body size 6.5 mm × 4.4 mm; thermal pad not present; compliant with JEDEC MO-153.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, DVCC | Digital supply voltage | Primary 1.8–3.6 V power input for core logic, timers, and USCI; decoupling capacitor required near pin. |
| 2, P1.0/TA0CLK/ACLK/A0 | Multi-function I/O | Configurable as GPIO, Timer0_A clock input, ACLK output, or ADC channel 0 - enables flexible clock routing and analog sensing on same pin. |
| 3–7, P1.1–P1.5 | Multi-function I/O | Support ADC inputs A1–A5, USCI_A/B signals (UART RX/TX, SPI CLK/MOSI/MISO, I²C SCL/SDA), and Timer_A compare/capture - consolidates communication and sensing interfaces. |
| 14–15, P1.6–P1.7 | Multi-function I/O | ADC inputs A6–A7; USCI_B SPI/I²C signals; JTAG TDI/TDO - provides full analog front-end and debug capability within P1 port. |
| 8–13, P2.0–P2.5 | General-purpose I/O | Timer1_A capture/compare channels (TA1.0–TA1.2); no ADC function - dedicated timing I/O for PWM generation or event counting. |
| 16, RST/NMI/SBWTDIO | Reset & debug I/O | Active-low reset input, non-maskable interrupt, and bidirectional Spy-Bi-Wire data line - enables single-pin debug and robust system recovery. |
| 17, TEST/SBWTCK | Debug clock input | JTAG test mode select and Spy-Bi-Wire clock - required for programming and in-circuit debugging; must be pulled high during normal operation. |
| 18–19, XOUT/XIN | Crystal oscillator terminals | Supports 32-kHz watch crystal for low-power real-time clock; internal load capacitance configurable via register - eliminates need for external caps in basic RTC use. |
| 20, DVSS | Digital ground | Reference return path for digital circuitry; must be connected to system ground plane with low-inductance trace. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low active current | 230 µA at 1 MHz, 2.2 V - extends battery life in always-on sensor monitoring by minimizing energy per instruction cycle. |
| Capacitive-touch I/O | Up to 24 pins support capacitive sensing without external components - enables direct integration of touch buttons/sliders in human-interface designs. |
| Built-in brownout detector | Monitors VCC and triggers reset if supply drops below threshold - prevents erratic code execution during battery sag or power-up sequencing. |
| On-chip bootloader (BSL) | Enables UART-based firmware updates without debugger; secured via fuse - supports field upgrades and reduces production test complexity. |
| Programmable code protection | Security fuse disables JTAG/Spy-Bi-Wire access after programming - protects intellectual property in deployed devices against unauthorized readout. |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Wireless temperature/humidity node powered by coin cell, transmitting data every 30 seconds via BLE peripheral MCU. IC Role / Device Role / Timing Role: Primary sensor acquisition MCU: reads analog outputs from HTU21D, conditions signal, stores timestamped samples in RAM, and triggers UART transfer to host. Use Value: Sub-1 µs wake-up and 0.1 µA LPM4 current enable >2-year battery life; integrated ADC and timer eliminate external signal chain components. |
Use Scenario: Handheld pulse oximeter with LED drivers, photodiode amplifier, and OLED display interface. IC Role / Device Role / Timing Role: Analog front-end controller: synchronizes LED drive timing, samples photodiode output via ADC, computes SpO₂ using on-chip math routines. Use Value: 10-bit ADC with internal reference ensures stable gain across battery voltage range; 16-bit timers precisely control LED pulse width and sampling windows. |
| Capacitive Touch Remote | Smart Energy Meter Interface |
Use Scenario: Battery-operated HVAC remote with 6 touch keys, backlight control, and IR transmission. IC Role / Device Role / Timing Role: Touch and IR subsystem MCU: scans capacitive keys, debounces inputs, manages LED backlight PWM, and encodes NEC protocol for IR LED driver. Use Value: Native capacitive-touch I/O reduces BOM count and PCB area; ultra-low standby current (0.5 µA) enables multi-year operation on CR2032. |
Use Scenario: Residential electricity meter with tamper-detection inputs, LCD driver, and RS-485 communication interface. IC Role / Device Role / Timing Role: Metering interface controller: monitors auxiliary inputs (reed switch, optical port), drives segment LCD, and handles Modbus RTU over RS-485 via USCI UART. Use Value: Dual USCI modules allow concurrent LCD refresh (SPI) and RS-485 comms (UART); brownout detector prevents false tamper alerts during voltage dips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2433IPW20R | 8 KB flash, 512 B RAM, identical peripherals and pinout - higher memory capacity with no layout change. | Preferred when firmware exceeds 4 KB or requires larger data buffers (e.g., extended Modbus tables or OTA update staging). | Select for future-proofing firmware growth while retaining identical hardware design and toolchain compatibility. |
| MSP430G2233IPW20R | 2 KB flash, 256 B RAM, same ADC/timers/USCI - reduced memory but identical power/performance envelope. | Suitable for minimal firmware (e.g., fixed-function sensor polling with no comms stack) where cost reduction is primary. | Choose only when application fits within 2 KB flash and no future feature expansion is anticipated. |
Compared with MSP430G2433IPW20R and MSP430G2233IPW20R, the MSP430G2333IPW20R delivers optimal balance of memory headroom and cost for mid-complexity sensor edge nodes - offering 4 KB flash for lightweight protocol stacks (BLE HID, UART-to-LoRaWAN bridge) without over-provisioning silicon.
Availability
MSP430G2333IPW20R is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, capacitive-touch remotes, and smart energy meter interfaces requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2333IPW20R 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 power efficiency, reliability, and broad ecosystem support.
The MSP430G2x33 product line targets cost-sensitive, battery-powered applications demanding ultra-low power, integrated analog peripherals, and rapid time-to-market - exemplified by the MSP430G2333IPW20R's optimized mix of ADC, timers, and communication interfaces in a 20-pin TSSOP.
FAQ
What is the maximum operating frequency of the MSP430G2333IPW20R?
The MSP430G2333IPW20R supports a maximum system clock (MCLK) frequency of 16 MHz at VCC = 3.3 V, 12 MHz at 2.7 V, and 6 MHz at 1.8 V - with DCO calibration ensuring stable operation across voltage and temperature. This allows real-time processing of ADC samples and USCI communication without external oscillators.
Does the MSP430G2333IPW20R support capacitive touch sensing?
Yes, the MSP430G2333IPW20R supports capacitive touch sensing on up to 24 I/O pins - including all P1.x and P2.x pins - using built-in charge-transfer methods and software libraries (e.g., MSP430 CapTIvate). No external RC networks or dedicated touch controller ICs are required.
Can the MSP430G2333IPW20R operate from a single 1.8-V supply?
Yes, the MSP430G2333IPW20R operates across 1.8 V to 3.6 V - enabling direct use with single-cell lithium batteries or low-voltage regulators. At 1.8 V, maximum MCLK is 6 MHz, and active current is characterized at 230 µA/MHz, making it ideal for ultra-low-power wake-and-measure applications.
What debug interface does the MSP430G2333IPW20R use?
The MSP430G2333IPW20R uses the Spy-Bi-Wire (SBW) interface - a 2-wire subset of JTAG - for programming and debugging. It requires only RST/NMI/SBWTDIO (pin 16) and TEST/SBWTCK (pin 17), reducing PCB routing complexity versus full 4-wire JTAG while maintaining full-speed emulation capability.
Is the ADC on the MSP430G2333IPW20R differential or single-ended?
The ADC10 module in the MSP430G2333IPW20R supports both single-ended and differential input modes. In single-ended mode, it converts 8 external analog inputs (A0–A7); in differential mode, it supports 4 differential pairs (e.g., A0–A1, A2–A3) with programmable gain - providing flexibility for noise-immune sensor measurements.
MSP430G2333IPW20R 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, IrDA, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, 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:
MSP430G2333IPW20R FAQ
1.How can I place an order for MSP430G2333IPW20R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2333IPW20R 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 MSP430G2333IPW20R reliable?
The price and inventory of MSP430G2333IPW20R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2333IPW20R is usually 5 days.
3.What payment methods are accepted for MSP430G2333IPW20R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2333IPW20R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2333IPW20R?
MSP430G2333IPW20R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2333IPW20R 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 MSP430G2333IPW20R?
For technical support, including MSP430G2333IPW20R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2333IPW20R requirements.
6.How does Aetrix verify that MSP430G2333IPW20R is sourced from the original manufacturer or authorized distributors?
All MSP430G2333IPW20R 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 MSP430G2333IPW20R meets industry standards.
7.What is the process for return or replacement of MSP430G2333IPW20R?
All MSP430G2333IPW20R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2333IPW20R, 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 MSP430G2333IPW20R part is unused and in its original packaging.
Return procedure for MSP430G2333IPW20R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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