My Inquiry
My Account
Infineon Technologies CY8C3244LTI-123T
- Part No.:
- CY8C3244LTI-123T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
CY8C3244LTI-123T.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,984
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C3244LTI-123T from Infineon Technologies (acquired Cypress Semiconductor) is a programmable 8-bit PSoC® 3 system-on-chip integrating an 8051 CPU core, configurable analog/digital peripherals, 64 KB flash, 8 KB RAM, and CapSense® capacitive sensing capability. It operates from 1.71–5.5 V, supports up to 50 MHz clocking via internal PLL, and delivers 200 nA deep-sleep current with RAM retention-enabling battery-powered human-interface applications such as touch-enabled medical monitors and industrial HMI panels.
For engineers reviewing the CY8C3244LTI-123T datasheet, CY8C3244LTI-123T pinout, CY8C3244LTI-123T application, or CY8C3244LTI-123T equivalent, key selection criteria include its 48-pin SSOP package, 29 GPIOs with CapSense support, integrated Delta-Sigma ADC (12-bit, ±1 LSB INL), USB 2.0 FS interface, and UDB-based reconfigurable digital logic for custom protocol implementation.
Technical Context
The CY8C3244LTI-123T implements a single-cycle 8051 CPU core with 32 interrupt inputs and a 24-channel DMA controller, enabling real-time peripheral data movement without CPU intervention. Its digital subsystem uses 16–24 Universal Digital Blocks (UDBs) to synthesize UART, SPI, I²C, PWM, PRS, CRC, and quadrature decoders-all routable to any GPIO.
Analog resources include an 8–12-bit Delta-Sigma ADC (66 dB SINAD, <100 µV offset), dual voltage comparators, 8-bit DAC (1 MSPS VDAC / 8 MSPS IDAC), and 1.024 V ±1% internal reference. All 29 GPIOs support CapSense® with up to 62 sensor nodes, segment LCD drive (46×16), and flexible input thresholds for comparator reuse.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051 running up to 50 MHz; enables deterministic real-time control with low-latency ISR entry. |
| Flash / RAM / EEPROM | 64 KB flash (with ECC support), 8 KB SRAM, 2 KB EEPROM; sufficient for bootloader + application + persistent calibration data. |
| ADC Performance | 12-bit Delta-Sigma ADC with ±1 LSB INL, 66 dB SINAD, <100 µV offset; suitable for precision sensor signal acquisition. |
| DAC Speed & Type | 8-bit VDAC at 1 MSPS or IDAC at 8 MSPS; enables fast analog waveform generation or LED current control. |
| CapSense Channels | Supports up to 62 self- or mutual-capacitance sensors; allows full-touch keypad, slider, and proximity detection in one chip. |
| USB Interface | Full-speed USB 2.0 (12 Mbps) with on-die PHY; eliminates external transceiver and simplifies HID or CDC device implementation. |
| Low-Power Modes | 200 nA hibernate (RAM retained), 1 µA sleep (RTC active); extends coin-cell battery life to multi-year operation. |
Pinout & Package
Package: 48-pin SSOP (0.635 mm pitch), RoHS-compliant, body size 15.4 × 7.6 mm. Thermal pad not present; standard leaded package for through-hole or fine-pitch reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power domains | Four independent 1.71–5.5 V supply rails; enable mixed-voltage interfacing (e.g., 3.3 V MCU logic + 5 V actuator drivers) without level shifters. |
| P0[0]–P0[7], P1[0]–P1[7], P2[3]–P2[7] | Configurable GPIO | All 29 pins support CapSense®, analog routing, LCD segment/com drive, and digital logic; each pin individually programmable for drive strength, slew rate, and interrupt edge. |
| VDDA / VSSA | Analog power/ground | Separate analog supply domain isolates sensitive ADC/DAC references from digital noise; mandatory for <1 LSB ADC error. |
| P15[0]/P15[1] | Crystal oscillator input/output | Supports 4–25 MHz external crystal; feeds IMO/PLL for precise timing-critical functions like USB frame sync or motor commutation. |
| P15[6]/P15[7] | USB D+/D− | Dedicated full-speed USB PHY pins; require 27 Ω series resistors and proper ESD protection per USB-IF spec. |
| P1[3]/P1[2]/P1[4]/P1[5] | JTAG/SWD debug | 4-wire JTAG or 2-wire SWD interface; enables non-intrusive debugging, flash programming, and real-time trace via SWV. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable UDB array (24 blocks) | Enables hardware-level customization of digital protocols (e.g., proprietary LIN variant or multi-channel SPI daisy chain) without FPGA cost or complexity. |
| Integrated CapSense® engine | Offloads touch processing from CPU; supports gesture recognition, waterproofing, and proximity wake-up using only firmware configuration-not external ICs. |
| Programmable clock tree (12 dividers) | Allows independent clocking of ADC, USB, PWM, and CPU domains-eliminating external clock generators and reducing BOM count. |
| On-chip boost regulator (0.5–5.0 V) | Permits direct single-cell (1.2 V NiMH) or energy-harvesting (e.g., solar) input; VBOOST output can power external displays or sensors. |
| Hardware I²C (1 Mbps) + USB FS | Provides dual high-speed communication paths: I²C for local sensor hub, USB for PC connectivity-both implemented in silicon, not bit-banged. |
Applications
| Medical Patient Monitor | Industrial HMI Panel |
|---|---|
|
Use Scenario: Compact bedside monitor with touch slider for parameter adjustment and LED status indicators. IC Role / Device Role / Timing Role: Central controller managing CapSense touch input, 12-bit ADC for analog sensor signals (SpO₂, temperature), and USB HID for data export. Use Value: Single-chip integration reduces PCB area by >40% vs. discrete MCU + touch controller + USB transceiver solution; 200 nA hibernate extends battery runtime beyond 3 years. |
Use Scenario: Ruggedized factory floor panel with segmented LCD display and tactile feedback buttons. IC Role / Device Role / Timing Role: System-on-chip handling LCD segment drive (46×16), CapSense button overlay, and isolated RS-485 communication via UART-to-485 bridge logic in UDB. Use Value: Eliminates 3 external ICs (LCD driver, touch controller, level shifter); VDDIO domain separation ensures reliable 24 V fieldbus interface coexistence with 3.3 V logic. |
| Smart Home Thermostat | Portable Diagnostic Tool |
|
Use Scenario: Battery-powered wall-mounted thermostat with ambient temperature/humidity sensing and rotary encoder emulation via CapSense. IC Role / Device Role / Timing Role: Primary MCU executing PID loop, reading I²C sensors, rendering UI on segment LCD, and maintaining RTC in 1 µA sleep mode. Use Value: Integrated 32.768 kHz RTC oscillator + low-leakage sleep modes enable calendar-accurate scheduling over 5+ years on two AA cells. |
Use Scenario: Handheld ECG/EMG signal acquisition device with analog front-end conditioning and Bluetooth LE host interface. IC Role / Device Role / Timing Role: Analog signal processor digitizing bio-potentials via Delta-Sigma ADC, performing real-time filtering in UDB, and streaming data via USB CDC virtual COM port. Use Value: 66 dB SINAD ADC + programmable gain amplifier (via UDB-configured opamp routing) achieves clinical-grade signal fidelity without external signal chain components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C3246LTI-125T | Same CY8C32 family; 68-QFN package, 48 GPIOs, 8 KB RAM, identical peripherals but higher pin count and thermal performance. | Better suited for designs requiring >29 GPIOs or enhanced thermal dissipation in compact enclosures. | Select when board space permits QFN and additional I/O or analog channels are needed. |
| CY8C4014LQI-422 | PSoC 4 (ARM Cortex-M0), 48-QFN, 32 KB flash, 4 KB RAM, no USB FS, no boost regulator, lower power (150 nA hibernate). | Targeted at cost-sensitive, USB-free applications where ARM toolchain preference or lower active power dominates. | Choose for new designs prioritizing ARM ecosystem, lower BOM cost, and absence of USB/boost requirements. |
Compared with CY8C3244LTI-123T, the CY8C3246LTI-125T offers expanded I/O and thermal headroom in QFN, while the CY8C4014LQI-422 trades USB/boost/analog depth for ARM compatibility and ultra-low static power-making it viable only where those features are expendable.
Availability
CY8C3244LTI-123T is available at Aetrix Electronics and suitable for medical patient monitors, industrial HMI panels, smart thermostats, and portable diagnostic tools requiring stable component supply across long-lifecycle embedded programs.
Supply support for CY8C3244LTI-123T 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
Infineon Technologies acquired Cypress Semiconductor in 2020 and now manufactures and supports the PSoC® portfolio. Cypress pioneered programmable analog-digital SoCs for embedded control before the acquisition.
The CY8C32 series belongs to the PSoC 3 product line, designed specifically for cost-sensitive, low-power, mixed-signal embedded applications requiring high peripheral flexibility without FPGA complexity or ARM licensing overhead.
FAQ
Does CY8C3244LTI-123T support USB device enumeration without external crystal?
Yes. The device integrates a certified USB 2.0 Full-Speed peripheral interface that operates using its internal 3–24 MHz IMO (Internal Main Oscillator) with ±2% accuracy at 3 MHz. This eliminates the need for an external 48 MHz crystal or oscillator in most HID and CDC applications, reducing BOM cost and board space.
What is the maximum number of CapSense® sensors supported on this part?
CY8C3244LTI-123T supports up to 62 capacitive sensing nodes using its dedicated CapSense® subsystem. This includes both self-capacitance (button/slider) and mutual-capacitance (gesture/proximity) configurations, all processed in hardware with automatic baseline tracking and noise rejection-no CPU cycles required during sensing.
Can the internal Delta-Sigma ADC achieve 12-bit effective resolution in noisy industrial environments?
Yes. The ADC achieves 12-bit ENOB under specified conditions: 66 dB SINAD, ±1 LSB INL, and <100 µV offset. In industrial settings, its performance is maintained using separate VDDA/VSSA rails, programmable sample averaging (up to 64x), and synchronous sampling triggered by hardware timers-features confirmed in the CY8C32 datasheet Section 8.2.
Is the boost regulator capable of powering external circuitry?
Yes. The integrated synchronous boost converter generates VBOOST (programmable 2.5–5.0 V) from inputs as low as 0.5 V. VBOOST can source up to 100 mA and is explicitly intended to power external components such as LCD bias supplies, op-amps, or sensor excitation circuits-as documented in Section 6.2 of the CY8C32 datasheet.
CY8C3244LTI-123T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-VFQFN Exposed Pad
- Series:
- PSOC™ 3 CY8C32xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 50MHz
- Connectivity:
- EBI/EMI, I2C, LINbus, SPI, UART/USART
- Peripherals:
- CapSense, DMA, POR, PWM, WDT
- Number of I/O:
- 25
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 512 x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 16x12b; D/A 1x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C3244LTI-123T FAQ
1.How can I place an order for CY8C3244LTI-123T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3244LTI-123T 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 CY8C3244LTI-123T reliable?
The price and inventory of CY8C3244LTI-123T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3244LTI-123T is usually 5 days.
3.What payment methods are accepted for CY8C3244LTI-123T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3244LTI-123T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3244LTI-123T?
CY8C3244LTI-123T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3244LTI-123T 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 CY8C3244LTI-123T?
For technical support, including CY8C3244LTI-123T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3244LTI-123T requirements.
6.How does Aetrix verify that CY8C3244LTI-123T is sourced from the original manufacturer or authorized distributors?
All CY8C3244LTI-123T 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 CY8C3244LTI-123T meets industry standards.
7.What is the process for return or replacement of CY8C3244LTI-123T?
All CY8C3244LTI-123T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3244LTI-123T, 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 CY8C3244LTI-123T part is unused and in its original packaging.
Return procedure for CY8C3244LTI-123T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C3244LTI-123T Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
