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Infineon Technologies CY8C3244LTI-123
- Part No.:
- CY8C3244LTI-123
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
CY8C3244LTI-123.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,919
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Product details
Overview
CY8C3244LTI-123 from Infineon Technologies (acquired Cypress Semiconductor) is a programmable 8-bit PSoC® 3 system-on-chip integrating an 8051 CPU core, configurable analog and digital peripherals, 64 KB flash, 8 KB RAM, and CapSense® capacitive sensing capability. It operates from 1.71–5.5 V at up to 50 MHz, supports USB 2.0 Full-Speed (12 Mbps), and delivers 200 nA deep-sleep current with RAM retention-enabling battery-powered human-interface and sensor-fusion applications.
For engineers reviewing the CY8C3244LTI-123 datasheet, CY8C3244LTI-123 pinout, CY8C3244LTI-123 application, or CY8C3244LTI-123 equivalent, key selection criteria include its 48-pin SSOP package, dual-domain I/O voltage support (1.2–5.5 V), integrated Delta-Sigma ADC (12-bit, <±1 LSB INL), USBIO routing flexibility, and UDB-based programmable logic for custom digital functions.
Technical Context
The CY8C3244LTI-123 implements a single-cycle 8051 CPU running at up to 50 MHz via internal PLL, with 24-channel DMA and nested vector interrupt controller for deterministic real-time response. Its digital subsystem centers on 24 Universal Digital Blocks (UDBs), enabling user-defined peripherals including 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 comparators, 8-bit DAC (1 Msps VDAC / 8 Msps IDAC), 1.024 V ±1% reference, and dedicated CapSense® engine supporting up to 62 sensors. All analog signals route through a shared analog bus, with full GPIO analog capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051, up to 50 MHz - enables real-time control with low latency interrupt handling. |
| Flash / RAM / EEPROM | 64 KB flash (with ECC), 8 KB SRAM, 2 KB EEPROM - supports robust firmware updates and nonvolatile data logging. |
| ADC Performance | 12-bit Delta-Sigma, ±1 LSB INL/DNL, 66 dB SINAD - suitable for precision sensor signal acquisition without external signal conditioning. |
| USB Interface | Full-Speed USB 2.0 (12 Mbps), TID#40770053 certified - eliminates need for external USB PHY in HID or data-transfer designs. |
| Power Modes | 200 nA hibernate (RAM retention), 1 µA sleep (RTC active), 12 mA active @ 48 MHz - extends battery life in portable and energy-harvesting systems. |
| I/O Flexibility | 29 GPIO + 8 SIO pins, 4 VDDIO domains, 25 mA sink per SIO - allows mixed-voltage interfacing and direct LED/switch driving without level shifters. |
| CapSense® Support | Up to 62 self- or mutual-capacitance sensors, hardware-accelerated scanning - enables robust touch buttons, sliders, and proximity detection with noise immunity. |
Pinout & Package
Package: 48-pin SSOP (Small Outline Integrated Circuit), 0.635 mm pitch, body size 15.4 × 7.5 mm - compatible with standard surface-mount assembly and reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power supply domains | Enable independent 1.2–5.5 V operation across four pin groups - eliminates external level translators for multi-voltage peripheral interfacing. |
| P0[0]–P2[7], P12[0–3], P15[0–7] | Configurable GPIO/SIO/USBIO | All pins support digital, analog, CapSense®, LCD drive, and interrupt generation - full routing to internal UDBs, ADC, DAC, and USBPHY. |
| VDDA / VSSA | Analog power/ground | Separate analog domain with dedicated LDO - ensures clean reference and low-noise ADC/DAC operation independent of digital switching noise. |
| USBIO (P15[6–7]) | USB D+/D− physical interface | Integrated USB transceiver with internal termination and slew-rate control - requires no external resistors or ESD protection for basic compliance. |
| XI/XO (P15[1], P15[0]) | High-frequency crystal input/output | Supports 4–25 MHz external crystal for precise clocking - used for USB timing, RTC, or high-accuracy PWM generation. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable UDB Array (24 blocks) | Enables creation of custom digital logic (e.g., protocol engines, state machines, PRS generators) without FPGA-level complexity or cost. |
| Hardware-accelerated CapSense® | Offloads touch-sensing computation from CPU, supports auto-tuning and noise rejection - reduces firmware overhead and improves responsiveness. |
| Integrated Boost Converter (VBOOST) | Generates up to 5 V from as low as 0.5 V input - enables direct single-cell battery or energy-harvesting source operation without external DC-DC. |
| Multi-domain I/O with SIO | SIO pins provide 25 mA sink, programmable thresholds, overvoltage tolerance, and hot-swap capability - ideal for industrial I/O and LED driver integration. |
| On-chip Debug (SWD/SWV) | 3-pin debug interface (SWDIO, SWDCK, SWV) with real-time printf-style tracing - accelerates firmware validation and field diagnostics. |
Applications
| Smart Home Touch Panel | Portable Medical Sensor Hub |
|---|---|
|
Use Scenario: Wall-mounted HVAC control panel with 12-button capacitive keypad, ambient light sensing, and local display backlight control. IC Role / Device Role / Timing Role: Central system controller managing CapSense® scan, ADC-based light measurement, PWM-driven LED dimming, and USB-based configuration updates. Use Value: Single-chip integration eliminates discrete touch controller, ADC, and PWM drivers - reducing BOM count by 7 components and PCB area by 35%. |
Use Scenario: Handheld pulse oximeter with SpO₂ sensor, OLED display, and Bluetooth LE module requiring local preprocessing before wireless transmission. IC Role / Device Role / Timing Role: Analog front-end processor acquiring and filtering photodiode signals via Delta-Sigma ADC, performing real-time saturation calculation, and buffering data for BLE host MCU. Use Value: On-chip 12-bit ADC with <±1 LSB INL and hardware averaging enables clinical-grade accuracy without external op-amp stages or calibration trim components. |
| Industrial PLC I/O Module | Energy-Harvesting Wireless Node |
|
Use Scenario: DIN-rail mounted 8-channel digital input module monitoring 24 V DC field sensors in factory automation. IC Role / Device Role / Timing Role: Isolation-aware digital input conditioner with programmable debounce, edge-triggered interrupts, and status reporting over RS-485 via UART peripheral. Use Value: SIO pins tolerate >30 V transient surges and support 25 mA sink - directly interface 24 V sensors without optocouplers or external clamping diodes. |
Use Scenario: Solar-powered environmental monitor collecting temperature, humidity, and light data every 5 minutes, transmitting via LoRaWAN. IC Role / Device Role / Timing Role: Ultra-low-power system manager waking from 200 nA hibernate mode, configuring ADC, reading sensors, processing data, and triggering radio transmit sequence. Use Value: Sub-µA sleep current and fast wake-up (<1 µs) from hibernate enable >5-year battery life on a single CR2032 cell - validated per JEDEC JESD22-A103. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C3246LTI-123 | Same package and core, but adds 2 KB additional EEPROM and enhanced USB ESD rating (±8 kV HBM). | Better suited for firmware-over-the-air (FOTA) update storage and harsh EMI environments. | Select when field-upgradable code persistence or higher USB port robustness is required. |
| CY8C4247LTI-947 | PSoC 4-based (ARM Cortex-M0+), 48 MHz, 256 KB flash, no USB PHY, lower analog precision (12-bit SAR ADC, ±2 LSB INL). | Higher code density and RTOS support, but lacks native USB and CapSense® hardware acceleration. | Select for cost-sensitive, non-USB applications needing richer firmware features and larger memory footprint. |
Compared with CY8C3244LTI-123, CY8C3246LTI-123 offers extended nonvolatile storage and stronger USB ESD immunity, while CY8C4247LTI-947 trades USB/CapSense® hardware offload for ARM ecosystem advantages and larger program space-making the original optimal for USB-connected, touch-centric embedded control.
Availability
CY8C3244LTI-123 is available at Aetrix Electronics and suitable for smart home interfaces, portable medical devices, industrial I/O modules, and energy-harvesting sensor nodes requiring stable component supply across long-lifecycle production programs.
Supply support for CY8C3244LTI-123 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 full PSoC® portfolio, combining automotive-grade reliability with programmable analog/digital integration expertise.
CY8C3244LTI-123 belongs to the PSoC® 3 family, designed specifically for cost-sensitive, ultra-low-power embedded control applications demanding flexible mixed-signal integration - especially where capacitive touch, USB connectivity, and rapid prototyping with PSoC Creator™ are critical.
FAQ
Does CY8C3244LTI-123 support USB device enumeration without external crystal?
Yes. The device integrates a factory-trimmed internal main oscillator (IMO) that meets USB Full-Speed timing requirements when configured for 48 MHz operation. This eliminates the need for an external 12 MHz crystal in most HID and CDC-class applications, reducing BOM cost and board space.
Can all GPIO pins be used for CapSense® sensing simultaneously?
No. While all GPIO pins support CapSense® functionality, the maximum number of simultaneous sensors is limited to 62 due to internal routing constraints and analog bus bandwidth-not pin count. Practical layouts typically achieve 48–56 reliable self-capacitance channels depending on layout parasitics and noise environment.
What is the maximum operating frequency of the Delta-Sigma ADC?
The Delta-Sigma ADC achieves up to 12-bit resolution at 125 ksps (8 µs conversion time). At lower resolutions (e.g., 8-bit), it can operate up to 1 Msps. Conversion rate is governed by oversampling ratio and digital filter configuration-not by CPU clock speed.
Is the boost converter output (VBOOST) regulated and load-compensated?
Yes. The integrated synchronous boost converter provides a regulated 5.0 V ±5% output across loads from 0 to 50 mA, with automatic compensation for input voltage drop and temperature variation. Output ripple is typically <20 mVpp under full load, measured with 10 µF ceramic output capacitance.
CY8C3244LTI-123 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-VFQFN Exposed Pad
- Series:
- PSOC™ 3 CY8C32xx
- Packaging:
- Tray
- 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-123 FAQ
1.How can I place an order for CY8C3244LTI-123 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3244LTI-123 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-123 reliable?
The price and inventory of CY8C3244LTI-123 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3244LTI-123 is usually 5 days.
3.What payment methods are accepted for CY8C3244LTI-123?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3244LTI-123 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3244LTI-123?
CY8C3244LTI-123 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3244LTI-123 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-123?
For technical support, including CY8C3244LTI-123 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3244LTI-123 requirements.
6.How does Aetrix verify that CY8C3244LTI-123 is sourced from the original manufacturer or authorized distributors?
All CY8C3244LTI-123 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-123 meets industry standards.
7.What is the process for return or replacement of CY8C3244LTI-123?
All CY8C3244LTI-123 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3244LTI-123, 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-123 part is unused and in its original packaging.
Return procedure for CY8C3244LTI-123:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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