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Texas Instruments MSP430G2553CY
- Part No.:
- MSP430G2553CY
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- Die
- Datasheet:
-
MSP430G2553CY.pdf
- Description:
- IC MCU 16BIT 16KB FLASH DIESALE
- Quantity:
- Payment:
- Shipping:
Inventory:1,866
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Product details
Overview
MSP430G2553CY from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 16 KB flash, 512 B RAM, 10-bit 200-ksps ADC with 8-channel autoscan, two 16-bit Timer_A modules with three capture/compare registers each, and dual USCI peripherals (UART/LIN/IrDA/SPI/I²C). It operates from 1.8 V to 3.6 V and supports five low-power modes - used in battery-powered sensor nodes, portable instrumentation, and capacitive-touch interfaces.
For engineers reviewing the MSP430G2553CY datasheet, MSP430G2553CY pinout, MSP430G2553CY application, or MSP430G2553CY equivalent, key selection criteria include its integrated ADC10 accuracy (±1 LSB INL), sub-1 µs wake-up from LPM4, Spy-Bi-Wire debug interface, and 24-capacitive-touch I/O capability across P1–P3 ports.
Technical Context
The MSP430G2553CY implements a 16-bit RISC CPU with 62.5-ns instruction cycle time, constant generators, and register-based architecture optimized for code efficiency. Its clock system integrates a digitally controlled oscillator (DCO) calibrated to 1 MHz, 8 MHz, 12 MHz, and 16 MHz, plus LF oscillator and 32-kHz crystal support - enabling precise timing control without external components.
Peripherals are memory-mapped and accessible via all CPU instructions. The device uses a unified interrupt vector table (0xFFFE–0xFFC0), with maskable interrupts for ADC10, USCI_A0/B0, Timer_A0/A1, Comparator_A+, and port P1/P2, plus non-maskable sources including NMI, oscillator fault, and power-on reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and 62.5-ns instruction cycle at 16 MHz - enables deterministic real-time control with minimal code footprint. |
| Flash / RAM | 16 KB flash (512-byte segments) + 512 B RAM - supports in-system programming, BSL UART interface, and secure code protection via fuse. |
| ADC10 | 10-bit SAR converter, 200 ksps max, internal reference, sample-and-hold, autoscan across 8 channels - delivers calibrated analog sensing without external reference or sample-hold circuitry. |
| Power Modes | Active mode: 230 µA @ 1 MHz, 2.2 V; LPM4 (RAM retention): 0.1 µA - extends coin-cell battery life to multi-year operation in intermittent-sensing applications. |
| USCI Peripherals | USCI_A0 (UART/LIN/IrDA/SPI) + USCI_B0 (SPI/I²C) - provides dual synchronous/asynchronous serial connectivity for sensor fusion, host communication, and bus interfacing. |
| Timer System | Two 16-bit Timer_A modules (TA0, TA1), each with three capture/compare registers - supports PWM generation, input capture, interval timing, and quadrature decoding with hardware flexibility. |
| Capacitive Touch | Up to 24 GPIO pins with programmable pin oscillators - enables direct implementation of touch buttons, sliders, and wheels without dedicated controller or external components. |
Pinout & Package
Package: 20-pin TSSOP (PW20), body size 6.5 mm × 4.4 mm, 0.65 mm pitch, exposed thermal pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - DVCC | Digital supply voltage | Primary 1.8–3.6 V digital power rail; decoupling required within 10 mm of pin for stable core operation. |
| 2 - P1.0/TA0CLK/ACLK/A0/CA0 | Multi-function I/O | Configurable as timer clock input, ACLK output, ADC channel 0, or comparator input - enables flexible clock tree routing and analog front-end integration. |
| 3 - P1.1/TA0.0/UCA0RXD/A1/CA1 | UART RX + ADC + comparator | Default UART receive pin; also serves as ADC input A1 and comparator CA1 - simplifies serial sensor interface with on-chip signal conditioning. |
| 4 - P1.2/TA0.1/UCA0TXD/A2/CA2 | UART TX + ADC + comparator | Default UART transmit pin; dual-use as ADC input A2 and comparator CA2 - supports full-duplex communication with analog monitoring capability. |
| 5 - P1.3/ADC10CLK/CAOUT/VREF-/VEREF-/A3/CA3 | ADC reference + comparator output | Provides ADC conversion clock, negative reference, comparator output, and analog input A3 - centralizes analog subsystem biasing and timing. |
| 6 - P1.4/SMCLK/UCB0STE/A4/VREF+/VEREF+/CA4/TCK | System clock + SPI + JTAG | Outputs SMCLK for peripheral sync; controls USCI_B0 slave enable; supplies ADC positive reference; serves as JTAG test clock - consolidates timing, interface, and debug functions. |
| 7 - P1.5/TA0.0/UCB0CLK/UCA0STE/A5/CA5/TMS | Timer + SPI/I²C + UART + JTAG | Supports Timer_A compare output, USCI_B0 clock, UART slave transmit enable, ADC A5, comparator CA5, and JTAG mode select - enables mixed-signal timing and multi-protocol control. |
| 16 - RST/NMI/SBWTDIO | Reset + NMI + debug I/O | Three-in-one pin: resets device on falling edge, accepts non-maskable interrupts, and carries Spy-Bi-Wire data during programming - reduces debug footprint to two pins (SBWTDIO + SBWTCK). |
| 17 - TEST/SBWTCK | JTAG test + debug clock | Selects JTAG mode when pulled high at reset; provides Spy-Bi-Wire clock during programming - eliminates need for full 4-pin JTAG header. |
| 18 - XOUT/P2.7 | Crystal oscillator output | Drives external 32-kHz crystal; must be left unconnected if using internal LF oscillator - ensures accurate real-time clock operation when precision timing is required. |
| 19 - XIN/P2.6/TA0.1 | Crystal oscillator input | Accepts 32-kHz crystal input or external clock; also configurable as Timer_A compare output - allows shared pin usage between RTC and timing peripherals. |
| 20 - DVSS | Digital ground | Reference return path for digital logic and I/O; must be connected to system ground plane with low-inductance path to minimize noise coupling into analog sections. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA in LPM4 with RAM retention enables decade-scale battery life in energy-constrained IoT endpoints. |
| Integrated ADC10 with calibration | Factory-calibrated 10-bit ADC includes gain/offset correction stored in info memory - achieves ±1 LSB INL without user calibration effort. |
| Capacitive-touch I/O | 24 GPIO pins support pin-oscillator-based touch detection - eliminates external RC networks and dedicated touch ICs for human-interface designs. |
| Spy-Bi-Wire debug interface | Two-wire (SBWTDIO + SBWTCK) in-circuit debugging and programming - reduces PCB space and connector cost versus standard JTAG. |
| Dual USCI modules | Independent USCI_A0 (UART/SPI) and USCI_B0 (SPI/I²C) allow concurrent serial protocols - supports sensor aggregation over I²C while communicating to host via UART. |
| Built-in brownout detector | Monitors DVCC and asserts reset below 1.7 V (typ.) - prevents erratic firmware execution during power ramp-up/down or battery sag. |
Applications
| Smart Sensor Node | Portable Medical Monitor |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data every 30 seconds via UART to BLE module. IC Role / Device Role / Timing Role: Central MCU managing ADC sampling, data processing, low-power scheduling, and serial communication. Use Value: Sub-1 µs wake-up from LPM4 and 0.1 µA retention current extend CR2032 battery life beyond 3 years. |
Use Scenario: Handheld pulse oximeter acquiring analog photodiode signals and driving OLED display. IC Role / Device Role / Timing Role: Signal acquisition controller with synchronized ADC sampling, LED drive timing, and display refresh coordination. Use Value: Integrated 10-bit ADC with internal reference and autoscan eliminates external op-amps and reference ICs, reducing BOM count by 4 components. |
| Capacitive-Touch Remote | Industrial Control Panel |
|
Use Scenario: IR remote with 12-button touch interface and low-power RF transmission. IC Role / Device Role / Timing Role: Touch controller and protocol encoder using P1/P2 pins for self-capacitance measurement and UART output. Use Value: 24-capacitive-touch I/O pins enable full keypad implementation without external touch controller, cutting PCB area by 35%. |
Use Scenario: DIN-rail mounted HMI panel monitoring 8 analog process inputs and controlling relays via SPI. IC Role / Device Role / Timing Role: Local intelligence node performing analog conditioning, alarm logic, and isolated SPI communication to PLC. Use Value: Dual USCI modules allow simultaneous I²C sensor reads and SPI relay control - eliminates need for second MCU or FPGA glue logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2453IPW20 | 8 KB flash, 512 B RAM, no ADC10 - retains same USCI, Timer_A, and low-power features. | Lacks integrated 10-bit ADC; requires external ADC for analog sensing. | Select when analog input count ≤ 2 and external ADC is already in BOM; saves ~15% cost in high-volume production. |
| MSP430FR2476TRHBR | Ferroelectric RAM (64 KB FRAM), 2 KB RAM, enhanced USCI, 12-bit ADC, 16-MHz MCLK - newer FRAM-based architecture. | Superior write endurance (>10¹⁴ cycles), faster ADC (1 MSPS), no flash erase delays - suited for data-logging and frequent firmware updates. | Choose for applications requiring frequent nonvolatile data writes or higher analog throughput; not pin-compatible - requires PCB redesign. |
Compared with MSP430G2453IPW20, the MSP430G2553CY adds ADC10 functionality essential for analog sensor integration; compared with MSP430FR2476TRHBR, it offers proven reliability and lower system cost but lacks FRAM endurance and higher-speed peripherals - making it optimal for cost-sensitive, moderate-data-rate embedded sensing.
Availability
MSP430G2553CY is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical monitors, capacitive-touch remotes, and industrial control panels requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MSP430G2553CY 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 - serving industrial, automotive, and consumer markets with high-reliability silicon and comprehensive design resources.
The MSP430G2xx family targets ultra-low-power embedded applications where battery life, small form factor, and integrated analog peripherals are critical - designed specifically for sensor systems, portable instrumentation, and energy-harvesting devices.
FAQ
What is the maximum ADC sampling rate supported by the MSP430G2553CY?
The MSP430G2553CY supports a maximum ADC10 sampling rate of 200 ksps under specified conditions: VCC ≥ 2.2 V, ADC10CLK = 5 MHz, and internal reference enabled. This rate is achievable in single-channel mode with minimal conversion overhead; autoscan across multiple channels reduces effective throughput proportionally due to sequencing delay.
Does the MSP430G2553CY support hardware UART auto-baudrate detection?
Yes, the MSP430G2553CY's USCI_A0 module supports enhanced UART auto-baudrate detection (LIN-compliant), allowing automatic synchronization to incoming serial streams without prior knowledge of bit rate - implemented via timer-based edge timing and software-assisted calculation per TI SLAU144 guidelines.
Can the MSP430G2553CY operate from a 3.3-V supply while maintaining full 16-MHz CPU performance?
Yes, the MSP430G2553CY operates across 1.8 V to 3.6 V and sustains full 16-MHz CPU performance at 3.3 V, as confirmed by the DCO calibration data stored in information memory segment A - enabling use with standard 3.3-V LDOs without frequency derating.
How many I/O pins on the MSP430G2553CY support capacitive-touch functionality?
The MSP430G2553CY supports capacitive-touch sensing on up to 24 I/O pins - all pins on Ports P1, P2, and P3 (where available in the 20-pin TSSOP package) include programmable pin oscillator enable bits for self-capacitance measurement without external components.
Is the MSP430G2553CY pin-compatible with other members of the MSP430G2x53 family?
Yes, the MSP430G2553CY shares identical pinout and electrical characteristics with other 20-pin TSSOP variants in the MSP430G2x53 family (e.g., MSP430G2553IPW20), including identical function mapping for all 20 pins - enabling drop-in replacement across flash/RAM configurations within the same package.
MSP430G2553CY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- Die
- 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, DMA, POR, PWM, WDT
- Number of I/O:
- 16
- 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:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2553CY FAQ
1.How can I place an order for MSP430G2553CY through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2553CY 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 MSP430G2553CY reliable?
The price and inventory of MSP430G2553CY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2553CY is usually 5 days.
3.What payment methods are accepted for MSP430G2553CY?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2553CY?
MSP430G2553CY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2553CY 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 MSP430G2553CY?
For technical support, including MSP430G2553CY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2553CY requirements.
6.How does Aetrix verify that MSP430G2553CY is sourced from the original manufacturer or authorized distributors?
All MSP430G2553CY 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 MSP430G2553CY meets industry standards.
7.What is the process for return or replacement of MSP430G2553CY?
All MSP430G2553CY units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2553CY, 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 MSP430G2553CY part is unused and in its original packaging.
Return procedure for MSP430G2553CY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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