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Texas Instruments MSP430G2353IN20
- Part No.:
- MSP430G2353IN20
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
MSP430G2353IN20.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,298
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Product details
Overview
MSP430G2353IN20 from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller in 20-pin PDIP package, featuring 16 KB flash, 256 B RAM, 10-bit ADC with 8-channel autoscan, two 16-bit Timer_A modules, USCI_A0/USCI_B0 serial interfaces (UART/IrDA/SPI/I²C), and on-chip comparator. It targets battery-powered sensor nodes and portable instrumentation requiring sub-µA standby current and <1 µs wake-up.
For engineers reviewing the MSP430G2353IN20 datasheet, MSP430G2353IN20 pinout, MSP430G2353IN20 application, or MSP430G2353IN20 equivalent, key selection criteria include its 20-pin PDIP footprint, integrated ADC10 (not present in G2x13 variants), Spy-Bi-Wire debug interface, brownout detection, and support for LIN-compliant auto-baud UART operation.
Technical Context
The MSP430G2353IN20 implements a 16-bit RISC CPU with 62.5-ns instruction cycle time, digitally controlled oscillator (DCO) calibrated to 1 MHz/8 MHz/12 MHz/16 MHz, and five software-selectable low-power modes (LPM0–LPM4). Its clock system sources ACLK from internal VLO or external 32-kHz crystal, MCLK from DCO, and SMCLK from DCO or ACLK.
Peripherals include two independent 16-bit Timer_A modules (TA0 and TA1), each with three capture/compare registers and multiple clock sources; USCI_A0 supporting UART with LIN auto-baud, IrDA encoding/decoding, and synchronous SPI; USCI_B0 supporting SPI and I²C; and an 8-channel analog comparator (Comp_A+) usable for slope A/D conversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and constant generators for optimized code efficiency |
| Flash / RAM | 16 KB flash memory (512-byte segments) + 256 B RAM - sufficient for firmware with ADC data processing and serial protocol stacks |
| ADC10 | 10-bit SAR ADC with 200-ksps sampling rate, internal reference (1.5 V/2.5 V), sample-and-hold, and 8-channel autoscan - enables multi-sensor analog acquisition without external mux |
| Power Modes | Active mode: 230 µA @ 1 MHz, 2.2 V; Standby: 0.5 µA; Off (RAM retention): 0.1 µA - supports years of operation on coin-cell batteries |
| USCI Peripherals | USCI_A0 (UART/LIN/IrDA/SPI) + USCI_B0 (SPI/I²C) - provides dual-protocol serial connectivity for host communication and sensor bus interfacing |
| Timer Resources | Two 16-bit Timer_A modules (TA0, TA1), each with three capture/compare registers - supports PWM generation, input capture, interval timing, and quadrature decoding |
| Supply Range | 1.8 V to 3.6 V - compatible with single Li-ion, two alkaline, or regulated 3.3 V systems without level-shifting |
Pinout & Package
Package: 20-pin PDIP (N20), 7.62 mm × 19.05 mm body, 2.54 mm pitch, through-hole mounting. Compatible with standard DIP sockets and wave-solder processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: DVCC | Digital supply voltage | Connect to 1.8–3.6 V regulated digital rail; decoupling capacitor required near pin |
| 2: P1.0/TA0CLK/ACLK/A0/CA0 | Multi-function I/O | Primary ADC input A0, comparator CA0, timer TA0 clock source, or ACLK output - configurable per application need |
| 5: P1.3/ADC10CLK/CAOUT/VREF-/VEREF-/A3/CA3 | Analog reference & ADC channel | Provides ADC negative reference (VREF-/VEREF-) and analog input A3; CAOUT supports comparator output routing |
| 6: P1.4/SMCLK/UCB0STE/UCA0CLK/A4/VREF+/VEREF+/CA4/TCK | Reference & clock I/O | Supplies ADC positive reference (VREF+/VEREF+), SMCLK output, USCI clock, and JTAG TCK - critical for precision analog and debug |
| 16: RST/NMI/SBWTDIO | Reset & debug I/O | Active-low reset input, non-maskable interrupt, and bidirectional Spy-Bi-Wire data line - enables in-circuit programming and debugging |
| 17: TEST/SBWTCK | Debug clock | JTAG test mode select and Spy-Bi-Wire clock input - required for flash programming and real-time emulation |
| 19: XIN/P2.6/TA0.1 | Clock input | Accepts 32.768 kHz crystal or external clock for ACLK; also serves as Timer_A0 compare output TA0.1 |
| 20: DVSS | Digital ground | Primary digital return path; must be connected to system ground plane with low-impedance trace |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA off-mode (RAM retention) and <1 µs wake-up enable rapid response to intermittent events while maximizing battery life |
| Integrated 10-bit ADC10 | 200-ksps sampling with internal reference, autoscan, and DMA-ready output - eliminates external ADC and reduces BOM cost in sensor front-ends |
| Universal Serial Communication Interface | USCI_A0 supports LIN-compliant auto-baud UART and IrDA encoding/decoding; USCI_B0 supports hardware I²C master/slave - simplifies automotive and industrial bus integration |
| On-chip analog comparator | 8-channel Comp_A+ with programmable hysteresis and slope A/D capability - enables zero-power threshold detection and analog event triggering |
| Capacitive-touch I/O | Up to 24 pins support capacitive touch sensing via built-in oscillator enable bits - allows direct implementation of touch buttons without external ICs |
| Serial onboard programming | No external programming voltage required; uses Spy-Bi-Wire interface over two pins (SBWTDIO/SBWTCK) - enables field firmware updates and eliminates dedicated programmers |
Applications
| Portable Environmental Sensor Node | Industrial Temperature Monitor |
|---|---|
Use Scenario: Battery-powered wireless node measuring temperature, humidity, and ambient light using analog sensors. IC Role / Device Role / Timing Role: Central MCU executing sensor readout, ADC conversion, data filtering, and UART transmission to BLE module. Use Value: 0.5 µA standby current extends 2-year battery life; integrated ADC10 and USCI_A0 eliminate discrete signal chain components. |
Use Scenario: DIN-rail mounted device monitoring motor winding temperature via thermistor networks in factory automation. IC Role / Device Role / Timing Role: Analog front-end controller acquiring 8-channel thermistor voltages, performing linearization, and reporting via RS-485 (via USCI_A0 + external transceiver). Use Value: 8-channel ADC autoscan and internal 2.5 V reference ensure consistent accuracy across channels without external precision references. |
| Smart Meter Tamper Detection | Low-Cost Medical Pulse Oximeter |
Use Scenario: Utility meter detecting physical tampering via vibration, magnetic field, or enclosure opening using analog comparators and GPIO interrupts. IC Role / Device Role / Timing Role: Event-driven controller using Comp_A+ outputs to trigger LPM3 exit and initiate secure logging via USCI_B0 I²C to EEPROM. Use Value: Comparator hysteresis and edge-triggered interrupts reduce false triggers; 0.1 µA off-mode preserves SRAM state during long idle periods. |
Use Scenario: Disposable fingertip pulse oximeter acquiring red/IR photodiode signals and computing SpO₂ using analog front-end and LED drive control. IC Role / Device Role / Timing Role: Mixed-signal controller managing synchronized ADC sampling, LED timing via Timer_A PWM, and I²C display update. Use Value: Dual Timer_A modules provide precise, independent LED drive timing and ADC sampling synchronization - critical for AC/DC signal separation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2453IN20 | 512 B RAM (vs. 256 B), same 16 KB flash, identical peripherals and pinout | Better suited for applications requiring larger data buffers (e.g., multi-sensor fusion or extended UART FIFO) | Select when additional RAM is needed without changing PCB layout or firmware architecture |
| MSP430G2553IN20 | 512 B RAM, 16 KB flash, adds BSL bootloader with password protection and enhanced security fuse | Required for field-upgradable devices needing secure firmware updates and flash protection | Choose when production units require robust firmware update mechanisms and intellectual property protection |
Compared with MSP430G2453IN20 and MSP430G2553IN20, the MSP430G2353IN20 offers optimal cost/performance balance for fixed-function sensor nodes where RAM headroom and bootloader security are not primary constraints.
Availability
MSP430G2353IN20 is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, and battery-powered environmental monitors requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2353IN20 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 decades of microcontroller innovation.
The MSP430G2xx family was designed specifically for ultra-low-power sensing and measurement applications, emphasizing sub-µA sleep currents, fast wake-up, and integrated analog peripherals to minimize external component count.
FAQ
What is the maximum operating frequency of the MSP430G2353IN20?
The MSP430G2353IN20 features a digitally controlled oscillator (DCO) calibrated to operate at up to 16 MHz. This frequency is achievable across the full 1.8–3.6 V supply range and specified temperature conditions, enabling high-speed signal processing while maintaining ultra-low power consumption in active mode.
Does the MSP430G2353IN20 support hardware I²C communication?
Yes, the MSP430G2353IN20 supports hardware I²C via its USCI_B0 module. Pin P1.6/UCB0SOMI/UCB0SCL and P1.7/UCB0SIMO/UCB0SDA are dedicated to I²C clock (SCL) and data (SDA) functions, enabling standard master or slave operation without bit-banging overhead.
How many analog input channels does the ADC10 peripheral support on the MSP430G2353IN20?
The ADC10 on the MSP430G2353IN20 supports eight analog input channels (A0–A7), accessible via P1.0 through P1.5 and P1.6–P1.7. All channels are selectable in autoscan mode, allowing sequential conversion without CPU intervention - ideal for multi-sensor data acquisition.
Is the MSP430G2353IN20 pin-compatible with other devices in the MSP430G2x53 family?
Yes, the MSP430G2353IN20 shares identical 20-pin PDIP (N20) pinout with MSP430G2453IN20 and MSP430G2553IN20. This allows direct substitution within the same footprint, provided firmware accommodates differences in RAM size (256 B vs. 512 B) and optional bootloader features.
What debug interface does the MSP430G2353IN20 use, and what pins are required?
The MSP430G2353IN20 uses the Spy-Bi-Wire (SBW) interface for debugging and programming, requiring only two pins: RST/NMI/SBWTDIO (Pin 16) and TEST/SBWTCK (Pin 17). This two-wire interface replaces traditional four-wire JTAG, reducing PCB routing complexity and connector count.
MSP430G2353IN20 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, IrDA, LINbus, SCI, SPI, UART/USART
- 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:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
MSP430G2353IN20 FAQ
1.How can I place an order for MSP430G2353IN20 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2353IN20 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 MSP430G2353IN20 reliable?
The price and inventory of MSP430G2353IN20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2353IN20 is usually 5 days.
3.What payment methods are accepted for MSP430G2353IN20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2353IN20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2353IN20?
MSP430G2353IN20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2353IN20 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 MSP430G2353IN20?
For technical support, including MSP430G2353IN20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2353IN20 requirements.
6.How does Aetrix verify that MSP430G2353IN20 is sourced from the original manufacturer or authorized distributors?
All MSP430G2353IN20 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 MSP430G2353IN20 meets industry standards.
7.What is the process for return or replacement of MSP430G2353IN20?
All MSP430G2353IN20 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2353IN20, 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 MSP430G2353IN20 part is unused and in its original packaging.
Return procedure for MSP430G2353IN20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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