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Texas Instruments MSP430G2253IRHB32R
- Part No.:
- MSP430G2253IRHB32R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MSP430G2253IRHB32R.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,050
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Product details
Overview
MSP430G2253IRHB32R from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 2 kB flash, 256 B RAM, a 10-bit 200-ksps ADC with internal reference and autoscan, two 16-bit Timer_A modules with three capture/compare registers each, USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and up to 24 capacitive-touch-enabled I/O pins. It targets battery-powered sensor nodes and portable measurement systems requiring fast wake-up and analog signal acquisition.
For engineers reviewing the MSP430G2253IRHB32R datasheet, MSP430G2253IRHB32R pinout, MSP430G2253IRHB32R application, or MSP430G2253IRHB32R equivalent, key selection criteria include its 2 kB flash/256 B RAM configuration, QFN-32 package with AVCC/AVSS separation, integrated ADC10 with VREF+/VREF− support, dual USCI peripherals, and sub-1 µs wake-up from LPM4.
Technical Context
The MSP430G2253IRHB32R implements a 16-bit RISC CPU with 62.5-ns instruction cycle time, digitally controlled oscillator (DCO) calibrated for 1/8/12/16 MHz operation, and five low-power modes including LPM4 with 0.1 µA off-mode current. Its clock system delivers ACLK (LF crystal or VLO), MCLK (CPU), and SMCLK (peripherals) with independent gating.
It integrates a comparator_A+ with eight input channels, supports slope A/D conversion, and features on-chip BSL for UART-based flash programming. The device uses Spy-Bi-Wire for debugging and includes brownout detection, watchdog timer, and programmable pullup/pulldown resistors on all I/O ports.
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 deterministic timing for real-time control. |
| Flash / RAM | 2 kB flash memory and 256 B RAM; sufficient for compact firmware with analog sensor processing and communication stacks. |
| ADC10 | 10-bit, 200-ksps SAR ADC with internal reference, sample-and-hold, autoscan, and 8-channel input multiplexing; supports direct analog signal digitization without external components. |
| USCI Peripherals | USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C); enables flexible wired communication for sensor data aggregation and host interface. |
| Power Modes | Five software-selectable low-power modes; LPM4 draws only 0.1 µA with RAM retention, enabling multi-year battery life in intermittent-sensing applications. |
| Wake-up Time | <1 µs from LPM4 to active mode via DCO; critical for event-triggered sampling in energy-constrained systems. |
| Supply Voltage | 1.8 V to 3.6 V operation; compatible with single-cell Li-ion, LiFePO₄, or two-cell alkaline battery supplies. |
Pinout & Package
Package: 32-pin QFN (RHB), 5 mm × 5 mm, 0.5 mm pitch, with exposed thermal pad recommended to be connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0CLK/ACLK/A0/CA0 | Multi-function I/O | Primary ADC input A0, comparator input CA0, ACLK output, and Timer0_A clock source; enables synchronized analog capture and timing. |
| P1.3/ADC10CLK/CAOUT/VREF−/VEREF−/A3/CA3 | Analog terminal | Dedicated ADC negative reference (VREF−), comparator output (CAOUT), and ADC input A3; supports ratiometric measurements and internal reference routing. |
| P1.4/SMCLK/CA4/TCK/VREF+/VEREF+/A4/UCB0STE/UCA0CLK | Multi-function I/O | Provides SMCLK output, ADC positive reference (VREF+), JTAG test clock (TCK), and USCI clock/enable signals; central to clock distribution and reference stability. |
| P1.7/CAOUT/A7/CA7/UCB0SIMO/UCB0SDA | Multi-function I/O | Shared comparator output, ADC input A7, SPI slave-in/master-out, and I²C data line; allows concurrent analog monitoring and serial bus participation. |
| RST/NMI/SBWTDIO | Debug & reset | Spy-Bi-Wire bidirectional debug I/O and non-maskable interrupt/reset input; enables in-system programming and fault recovery without dedicated JTAG pins. |
| XIN/P2.6/TA0.1 | Oscillator input | Accepts 32.768 kHz crystal or external clock for ACLK; supports precise real-time clocking and low-power periodic wake-up. |
| AVCC / AVSS | Analog supply | Dedicated analog power (AVCC) and ground (AVSS) pins; isolate noise-sensitive ADC and comparator circuitry from digital switching transients. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low standby current | 0.5 µA in LPM3 mode with ACLK active; extends battery life in always-on sensor monitoring applications. |
| Integrated ADC10 with autoscan | Automatically sequences through up to 8 analog inputs without CPU intervention; reduces firmware overhead and improves sampling determinism. |
| Capacitive touch I/O capability | Individual pin oscillator enable bits on all P1/P2/P3 pins; enables low-cost proximity or button sensing without external RC networks. |
| On-chip BSL with UART interface | Programmable via P1.1 (TX) and P1.5 (RX); eliminates need for external programmer in field firmware updates. |
| Dual USCI modules | Independent USCI_A0 and USCI_B0 support simultaneous UART + I²C or dual SPI interfaces; simplifies connectivity to multiple sensors or hosts. |
Applications
| Wireless Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity node transmitting data via UART to BLE module. IC Role / Device Role / Timing Role: Primary MCU acquiring analog sensor outputs via ADC10, managing low-power sleep/wake cycles, and driving UART communication. Use Value: 0.1 µA off-mode current and sub-1 µs wake-up minimize energy per measurement, extending coin-cell life beyond 5 years. | Use Scenario: Handheld pulse oximeter capturing photodiode signals and displaying results on LCD. IC Role / Device Role / Timing Role: Analog front-end controller performing synchronized ADC sampling, LED drive timing via Timer_A PWM, and LCD interface via USCI. Use Value: Integrated VREF+/VREF− and 8-channel autoscan eliminate external reference ICs and multiplexers, reducing BOM cost and board area. |
| Industrial Control Panel | Smart Home Occupancy Detector |
Use Scenario: DIN-rail mounted panel with pushbuttons, LEDs, and RS-485 interface to PLC. IC Role / Device Role / Timing Role: Local intelligence unit handling button debouncing, LED PWM dimming, and RS-485 half-duplex UART framing via USCI_A0. Use Value: Dual USCI modules allow concurrent UART (RS-485) and I²C (EEPROM/config storage), enabling robust local configuration without host dependency. | Use Scenario: Ceiling-mounted PIR + ambient light sensor detecting occupancy for lighting control. IC Role / Device Role / Timing Role: Capacitive-touch enabled I/O driving self-calibrating PIR signal conditioning and ambient light ADC measurement. Use Value: On-chip comparator_A+ with slope A/D conversion replaces external op-amp integrators, enabling single-chip motion/light analysis with <1 µA quiescent current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2453IRHB32 | 4 kB flash, 512 B RAM, same peripherals and pinout; higher memory capacity. | Supports larger firmware with protocol stacks (e.g., Modbus RTU over UART) or extended calibration tables. | Select when firmware size exceeds 2 kB or RAM usage requires >256 B for buffers/state storage. |
| MSP430G2233IRHB32 | No ADC10; retains comparator_A+, USCI, timers, and same 2 kB/256 B memory; identical QFN-32 package. | Targeted at purely digital control or comparator-based threshold detection without analog digitization. | Select when ADC functionality is unnecessary and cost reduction via part simplification is prioritized. |
Compared with MSP430G2453IRHB32, the MSP430G2253IRHB32R offers optimized memory sizing for compact sensor firmware, while differing from MSP430G2233IRHB32 by including the full ADC10 subsystem-making it the minimal-feature-complete variant for analog acquisition within the G2x53 family.
Availability
MSP430G2253IRHB32R is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, and industrial control panels requiring stable component supply, long-term manufacturability, and TI's qualified automotive-grade process.
Supply support for MSP430G2253IRHB32R 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 and system integration.
The MSP430G2xx family is designed for ultra-low-power mixed-signal applications including battery-operated sensors, metering, and portable instrumentation where extended runtime and analog integration are critical.
FAQ
What is the maximum ADC sampling rate supported by the MSP430G2253IRHB32R?
The MSP430G2253IRHB32R supports a maximum ADC10 sampling rate of 200 ksps (kilo-samples per second) with internal reference and autoscan enabled. This rate is achievable using the internal ADC10CLK derived from the DCO or external sources, and is specified under typical conditions of 2.2 V supply and 25°C ambient temperature per the SLAS735J datasheet.
Does the MSP430G2253IRHB32R support hardware UART auto-baudrate detection?
Yes, the MSP430G2253IRHB32R's USCI_A0 module supports enhanced UART with hardware auto-baudrate detection (LIN-compatible). This feature allows the device to automatically synchronize to incoming serial frames without prior knowledge of the baud rate, simplifying interoperability with variable-speed hosts in sensor network gateways.
What is the function of the NC pins on the MSP430G2253IRHB32R QFN package?
The MSP430G2253IRHB32R QFN package has two NC (no-connect) pins: Pin 8 and Pin 32. These pins are not bonded internally and must remain unconnected in PCB layout. Neither pin serves a functional role, and connecting them may cause unintended electrical behavior or reliability issues.
Can the MSP430G2253IRHB32R operate from a single 1.8 V supply?
Yes, the MSP430G2253IRHB32R is fully specified to operate across a supply voltage range of 1.8 V to 3.6 V. At 1.8 V, it maintains full functionality including ADC10 operation (with reduced reference headroom), USCI communication, and Timer_A operation, enabling compatibility with modern low-voltage energy harvesting and battery chemistries.
How is the MSP430G2253IRHB32R programmed in-system without external hardware?
The MSP430G2253IRHB32R supports in-system programming via its built-in Bootstrap Loader (BSL), accessible through UART using P1.1 (TXD) and P1.5 (RXD). With a user-defined password, the BSL enables flash reprogramming over a simple serial interface-eliminating the need for JTAG/Spy-Bi-Wire programmers during field updates or prototyping.
MSP430G2253IRHB32R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-VFQFN Exposed Pad
- 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, DMA, POR, PWM, WDT
- Number of I/O:
- 24
- Program Memory Size:
- 2KB (2K 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:
MSP430G2253IRHB32R FAQ
1.How can I place an order for MSP430G2253IRHB32R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2253IRHB32R 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 MSP430G2253IRHB32R reliable?
The price and inventory of MSP430G2253IRHB32R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2253IRHB32R is usually 5 days.
3.What payment methods are accepted for MSP430G2253IRHB32R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2253IRHB32R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2253IRHB32R?
MSP430G2253IRHB32R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2253IRHB32R 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 MSP430G2253IRHB32R?
For technical support, including MSP430G2253IRHB32R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2253IRHB32R requirements.
6.How does Aetrix verify that MSP430G2253IRHB32R is sourced from the original manufacturer or authorized distributors?
All MSP430G2253IRHB32R 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 MSP430G2253IRHB32R meets industry standards.
7.What is the process for return or replacement of MSP430G2253IRHB32R?
All MSP430G2253IRHB32R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2253IRHB32R, 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 MSP430G2253IRHB32R part is unused and in its original packaging.
Return procedure for MSP430G2253IRHB32R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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