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Texas Instruments MSP430G2533IPW28
- Part No.:
- MSP430G2533IPW28
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2533IPW28.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,512
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Product details
Overview
MSP430G2533IPW28 from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 16 KB flash, 512 B RAM, a 10-bit 200-ksps ADC with 8 channels, two 16-bit Timer_A modules, USCI with UART/LIN/IrDA/SPI/I²C, and up to 24 capacitive-touch I/O pins in a 28-pin TSSOP package. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and touch interfaces.
For engineers reviewing the MSP430G2533IPW28 datasheet, MSP430G2533IPW28 pinout, MSP430G2533IPW28 application, or MSP430G2533IPW28 equivalent, key selection criteria include active-mode current (230 µA @ 1 MHz, 2.2 V), wake-up time (<1 µs from standby), ADC resolution and channel count, USCI dual-interface capability, and TSSOP-28 pin compatibility with legacy MSP430G2x33 designs.
Technical Context
The MSP430G2533IPW28 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. Its clock system supports internal VLO, external 32-kHz crystal, and high-frequency digital sources - enabling flexible low-power timing across LPM0–LPM4 modes.
Peripherals are tightly integrated via the USCI module (dual UART/SPI/I²C), Timer_A3 capture/compare units with PWM and input capture, and ADC10 with internal reference, sample-and-hold, and autoscan. Port P3 (available only on 28- and 32-pin variants) provides eight additional I/Os with configurable pullup/pulldown resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 62.5-ns instruction cycle; enables efficient C code execution and deterministic real-time response. |
| Flash / RAM | 16 KB flash memory (in-system programmable, no external VPP); 512 B RAM for data retention in LPM3/LPM4 modes. |
| ADC10 | 10-bit, 200-ksps SAR ADC with 8 analog inputs, internal reference (1.5 V/2.5 V), autoscan, and DMA support - suitable for multi-channel sensor sampling. |
| Power Consumption | 230 µA active @ 1 MHz/2.2 V; 0.5 µA standby; 0.1 µA LPM4 (RAM retention) - extends coin-cell battery life to years in intermittent-sensing applications. |
| USCI Peripherals | Dual USCI modules: USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C) - enables simultaneous serial communication with host MCU and peripheral sensors. |
| Timer Resources | Two 16-bit Timer_A3 modules, each with three capture/compare registers - supports PWM generation, input capture, interval timing, and quadrature decoding. |
| Operating Voltage | 1.8 V to 3.6 V supply range - compatible with single-cell Li-ion, LiFePO₄, and dual-AA alkaline systems without regulation overhead. |
Pinout & Package
TSSOP-28 package (9.7 mm × 4.4 mm), lead pitch 0.65 mm, RoHS-compliant, surface-mount. Pin 1 marked by dot; pin 14 = P1.6, pin 28 = DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 / DVCC | Digital supply voltage | Primary 1.8–3.6 V power rail for core logic and digital I/O; requires local 100-nF decoupling. |
| 2 / P1.0/TA0CLK/ACLK/A0 | Multi-function I/O | Configurable as timer clock input, ACLK output, or ADC channel 0 - enables synchronous sampling or low-jitter timing source. |
| 5 / P1.3/ADC10CLK/VREF-/VEREF-/A3 | Analog reference & ADC input | Supplies negative reference (VREF−) and accepts analog input A3; supports external reference configuration or internal VREF− biasing. |
| 6 / P1.4/SMCLK/UCB0STE/UCA0CLK/A4/VREF+/VEREF+ | System clock & reference | Outputs SMCLK; selects USCI slave mode; supplies ADC positive reference - critical for synchronized SPI/I²C and precision ADC scaling. |
| 24 / RST/NMI/SBWTDIO | Reset & debug I/O | Active-low reset input, non-maskable interrupt, and bidirectional Spy-Bi-Wire data line - enables in-system programming and debugging with 2-wire interface. |
| 25 / TEST/SBWTCK | Debug clock | JTAG test clock input; required for fuse blowing and Spy-Bi-Wire programming - must be pulled high during normal operation. |
| 27 / XIN/P2.6/TA0.1 | Clock input | Crystal oscillator input for 32-kHz or high-frequency crystals; also serves as Timer0_A compare output - allows shared pin for timing and control. |
| 28 / DVSS | Digital ground | Reference return path for DVCC; must be connected to system ground plane with low-inductance path to minimize noise coupling into analog sections. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast wake-up | Sub-1-µs transition from LPM3/LPM4 to active mode - enables duty-cycled sensing with minimal latency and energy penalty. |
| Capacitive-touch I/O | Up to 24 GPIO pins support capacitive touch sensing without external components - reduces BOM cost and PCB area in HMI designs. |
| Built-in brownout detector | Monitors DVCC and triggers reset if voltage drops below threshold - prevents erratic flash execution and data corruption during battery sag. |
| On-chip emulation | Spy-Bi-Wire interface with 2-pin debug access - eliminates need for full JTAG header, saving board space and simplifying production programming. |
| Calibrated DCO | Factory-trimmed DCO frequencies at 1/8/12/16 MHz - eliminates external crystal for many timing-critical applications while maintaining ±2% accuracy. |
Applications
| Wireless Sensor Node | Capacitive Touch Panel |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity node transmitting data via UART-to-LoRa module every 5 minutes. IC Role / Device Role / Timing Role: Central controller managing ADC sampling, sleep/wake scheduling, USCI UART transmission, and low-power state transitions. Use Value: 0.1 µA LPM4 current and <1 µs wake-up enable >5-year battery life on CR2032; 10-bit ADC resolves sub-0.5°C thermal drift. |
Use Scenario: 8-button touch interface for industrial control panel with proximity detection and debounce. IC Role / Device Role / Timing Role: Dedicated touch acquisition engine using built-in capacitive sensing logic and timer-driven scanning. Use Value: 24 touch-capable I/Os eliminate external touch controller IC; integrated software library reduces firmware development time by 40%. |
| Portable Medical Monitor | Smart Energy Meter Interface |
|
Use Scenario: Handheld pulse oximeter acquiring analog photodiode signals and driving OLED display via SPI. IC Role / Device Role / Timing Role: Signal acquisition MCU handling ADC oversampling, digital filtering, and SPI display refresh. Use Value: 200-ksps ADC captures fast photoplethysmogram transients; USCI_B0 SPI drives display at 8 MHz with zero wait states. |
Use Scenario: DIN-rail energy meter with isolated RS-485 communication and tamper-detection I/O monitoring. IC Role / Device Role / Timing Role: Isolated interface co-processor managing UART-to-RS-485 translation, GPIO event logging, and secure boot verification. Use Value: Dual USCI modules allow concurrent UART (to meter SoC) and SPI (to secure element); programmable code protection prevents firmware tampering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2433IPW28 | 8 KB flash, 512 B RAM, identical peripherals and pinout - lacks 16 KB program storage capacity. | Suitable for simpler firmware with smaller code footprint; not viable for complex sensor fusion or OTA update stacks. | Select when application code size remains under 7.5 KB and future feature expansion is unlikely. |
| MSP430FR2433IPW28 | Ferroelectric RAM (FRAM) instead of flash; 15 KB FRAM, 2 KB RAM; same 28-pin TSSOP; higher write endurance (>10¹⁴ cycles). | Enables frequent data logging without wear leveling; eliminates flash erase delays; supports true EEPROM-like behavior. | Prefer for high-cycle data recorders or applications requiring instant nonvolatile writes during power loss. |
Compared with MSP430G2433IPW28, the MSP430G2533IPW28 delivers 100% more flash for feature-rich firmware, while MSP430FR2433IPW28 trades flash endurance for FRAM's zero-write-latency - making the MSP430G2533IPW28 optimal for cost-sensitive, code-intensive, battery-constrained designs where flash longevity is sufficient.
Availability
MSP430G2533IPW28 is available at Aetrix Electronics and suitable for wireless sensor nodes, capacitive touch interfaces, portable medical monitors, and smart energy meter interfaces requiring stable component supply and long-term industrial availability.
Supply support for MSP430G2533IPW28 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 innovation in low-power design.
The MSP430G2xx family targets cost-sensitive, battery-operated applications demanding ultra-low power, integrated analog peripherals, and rapid time-to-market - exemplified by the MSP430G2533IPW28's balance of flash density, ADC capability, and TSSOP packaging.
FAQ
What is the maximum system clock frequency supported by the MSP430G2533IPW28?
The MSP430G2533IPW28 supports a maximum MCLK frequency of 16 MHz at VCC ≥ 3.3 V, 12 MHz at 2.7 V, and 6 MHz at 1.8 V - all with 50% ±10% duty cycle. This is achieved using the factory-calibrated DCO; external crystals up to 16 MHz are also supported via the XT1 oscillator circuit.
Does the MSP430G2533IPW28 include hardware support for capacitive touch sensing?
Yes, the MSP430G2533IPW28 supports capacitive touch sensing on up to 24 I/O pins without external components. It uses integrated analog comparators, timers, and GPIO configuration to implement charge-transfer or relaxation-oscillator methods - validated by TI's CapTIvate™ software library.
Can the MSP430G2533IPW28 operate from a single 1.8-V supply?
Yes, the MSP430G2533IPW28 is fully specified for operation from 1.8 V to 3.6 V. At 1.8 V, it achieves 6-MHz maximum system frequency and maintains full functionality including ADC, USCI, and timers - enabling direct connection to low-voltage batteries or regulators without level-shifting.
How many ADC channels does the MSP430G2533IPW28 support, and what reference options are available?
The MSP430G2533IPW28 integrates an ADC10 module with 8 selectable analog input channels (A0–A7). Reference options include internal 1.5-V or 2.5-V references, external VREF+ and VREF−, or AVCC - all configurable via ADC10CTL0 and ADC10CTL1 registers for flexible signal scaling.
Is the MSP430G2533IPW28 pin-compatible with other devices in the MSP430G2x33 family?
Yes, the MSP430G2533IPW28 shares identical pinout, electrical characteristics, and peripheral mapping with MSP430G2433IPW28 and MSP430G2333IPW28 in the TSSOP-28 package - enabling drop-in replacement for code-size upgrades or downgrades within the same footprint and layout.
MSP430G2533IPW28 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 28-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, IrDA, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, PWM, WDT
- Number of I/O:
- 24
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 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:
MSP430G2533IPW28 FAQ
1.How can I place an order for MSP430G2533IPW28 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2533IPW28 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 MSP430G2533IPW28 reliable?
The price and inventory of MSP430G2533IPW28 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2533IPW28 is usually 5 days.
3.What payment methods are accepted for MSP430G2533IPW28?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2533IPW28 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2533IPW28?
MSP430G2533IPW28 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2533IPW28 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 MSP430G2533IPW28?
For technical support, including MSP430G2533IPW28 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2533IPW28 requirements.
6.How does Aetrix verify that MSP430G2533IPW28 is sourced from the original manufacturer or authorized distributors?
All MSP430G2533IPW28 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 MSP430G2533IPW28 meets industry standards.
7.What is the process for return or replacement of MSP430G2533IPW28?
All MSP430G2533IPW28 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2533IPW28, 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 MSP430G2533IPW28 part is unused and in its original packaging.
Return procedure for MSP430G2533IPW28:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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