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Infineon Technologies CY8C3246LTI-125
- Part No.:
- CY8C3246LTI-125
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
CY8C3246LTI-125.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,071
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Product details
Overview
CY8C3246LTI-125 from Infineon Technologies (acquired Cypress Semiconductor) is a programmable 8-bit PSoC® 3 system-on-chip integrating an enhanced 8051 CPU, 64 KB flash, 8 KB RAM, configurable analog/digital peripherals, and USB 2.0 FS interface. It operates from 1.71–5.5 V at up to 50 MHz, supports CapSense® for up to 62 touch sensors, and delivers 200 nA deep-sleep current with RAM retention-ideal for battery-powered industrial HMI and sensor fusion nodes.
For engineers reviewing the CY8C3246LTI-125 datasheet, CY8C3246LTI-125 pinout, CY8C3246LTI-125 application, or CY8C3246LTI-125 equivalent, key selection criteria include its 48-pin TQFP package, integrated 12-bit Delta-Sigma ADC (±1 LSB INL), USBIO-capable pins, UDB-based reconfigurable digital logic, and support for bootloader programming via I²C/UART/USB.
Technical Context
The device implements a single-cycle 8051 core with 32 interrupt inputs and a 24-channel DMA controller, enabling zero-CPU-overhead peripheral data movement. Its clock tree includes a 3–24 MHz internal main oscillator (IMO) ±2% accuracy, a 50 MHz PLL, and a 1 kHz/33 kHz low-power ILO for RTC and wake-up timing.
Analog resources comprise an 8–12-bit Delta-Sigma ADC (66 dB SINAD, <100 µV offset), dual comparators, 8-bit DAC (1 Msps VDAC, 8 Msps IDAC), and 1.024 V ±1% reference-fully routable to any GPIO. Digital flexibility stems from 24 Universal Digital Blocks (UDBs), supporting user-defined UART/SPI/I²S/LIN/CRC/PRS/Quadrature Decoder functions beyond four fixed TCPWM modules and certified USB 2.0 FS PHY.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051 running up to 50 MHz; enables deterministic real-time control with sub-µs interrupt latency. |
| Flash / RAM / EEPROM | 64 KB flash (with ECC support), 8 KB SRAM, 2 KB EEPROM; sufficient for complex firmware + persistent calibration data storage. |
| ADC Performance | 12-bit Delta-Sigma ADC with ±1 LSB INL, 66 dB SINAD, <100 µV offset; suitable for precision sensor signal acquisition without external signal conditioning. |
| USB Interface | Full-speed USB 2.0 (12 Mbps) with on-die PHY and TID#40770053 certification; eliminates need for external transceiver in host-peripheral designs. |
| Low-Power Modes | 200 nA hibernate (RAM retained), 1 µA sleep (RTC active); enables multi-year operation on coin-cell batteries. |
| I/O Flexibility | 48-pin TQFP package with 36 GPIO + 4 SIO + 2 USBIO pins; all digital/analog signals fully routable to any pin via programmable interconnect. |
| CapSense Support | Hardware-accelerated CapSense® engine supporting up to 62 self- or mutual-capacitance sensors; enables robust touch UI with noise immunity and proximity detection. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O voltage domain supplies | Four independent 1.71–5.5 V domains enable mixed-voltage interfacing (e.g., 1.8 V logic + 3.3 V sensors) without external level shifters. |
| P0[0]–P0[7], P1[0]–P1[7], P2[3]–P2[7] | Configurable GPIO | All support analog routing, CapSense, LCD drive, and programmable drive strength; usable as ADC inputs, DAC outputs, or comparator inputs. |
| P15[0]/P15[1] | Crystal oscillator input/output | Supports 4–25 MHz external crystal for precise timing; required for USB suspend/resume synchronization and high-accuracy RTC. |
| P15[6]/P15[7] | USBIO D+/D− | Dedicated full-speed USB physical layer pins; internally terminated and ESD-protected; usable as GPIO when USB disabled. |
| P1[3]/P1[2] | SWDIO/SWDCK | 2-wire Serial Wire Debug interface; enables in-circuit programming and real-time trace with minimal pin count and no JTAG TAP overhead. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Subsystem | On-die 12-bit Delta-Sigma ADC, dual comparators, 8-bit DAC, and 1.024 V ±1% reference-enables sensor front-end integration without discrete signal chain components. |
| Reconfigurable Digital Logic (UDB) | 24 Universal Digital Blocks allow creation of custom UART/SPI/I²S/LIN/CRC/PRS peripherals-eliminates need for external protocol ICs and reduces BOM count. |
| CapSense® Hardware Engine | Dedicated hardware accelerates capacitive sensing with automatic baseline tracking and noise rejection-supports robust touch buttons, sliders, and proximity detection in noisy environments. |
| Integrated USB 2.0 FS PHY | TID#40770053-certified USB interface with internal termination and ESD protection-reduces PCB area and simplifies compliance testing for USB-connected devices. |
| Multi-Voltage I/O Architecture | Four independent VDDIO domains with 25 mA sink per SIO pin-allows direct interfacing with 1.8 V, 2.5 V, 3.3 V, and 5 V peripherals without level translators. |
Applications
| Industrial HMI Panel | Portable Medical Sensor Node |
|---|---|
|
Use Scenario: Touch-enabled control panel for PLCs and motor drives operating in factory-floor environments with EMI and wide temperature swings. IC Role / Device Role / Timing Role: Central controller executing real-time logic, driving segmented LCD, acquiring analog sensor data, and communicating via USB/UART to host systems. Use Value: Single-chip integration replaces MCU + ADC + touch controller + USB transceiver, reducing board area by >40% and eliminating inter-chip timing skew. |
Use Scenario: Battery-powered wearable vital sign monitor measuring ECG, temperature, and motion using analog front-end and capacitive electrodes. IC Role / Device Role / Timing Role: Signal acquisition hub performing analog-to-digital conversion, digital filtering, CapSense electrode scanning, and USB data streaming to PC. Use Value: 200 nA hibernate mode extends battery life to >3 years on CR2032; integrated ADC/DAC/comparators eliminate external signal conditioning ICs. |
| Smart Home Energy Monitor | Automotive Body Control Module (BCM) Subsystem |
|
Use Scenario: DIN-rail mounted electricity meter with current/voltage sensing, display, and USB configuration port for field calibration. IC Role / Device Role / Timing Role: High-precision measurement engine using Delta-Sigma ADC for RMS calculations, CapSense for sealed front-panel controls, and USB for firmware updates. Use Value: ±1 LSB INL and 66 dB SINAD ensure Class 0.5 metering accuracy; programmable UDBs implement custom energy calculation algorithms in hardware. |
Use Scenario: Door module controlling window lift, mirror fold, and interior lighting with touch-sensitive switches and LIN bus communication. IC Role / Device Role / Timing Role: Local intelligence node handling CapSense touch detection, PWM motor control, LIN protocol stack, and fault-safe power management. Use Value: SIO pins tolerate >5.5 V during load dump events; programmable thresholds prevent false triggers in automotive voltage transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C3247LTI-144 | Same architecture but 68-QFN package, 48 GPIO, higher USBIO ESD rating (±15 kV air), and extended temp range (–40 to 105 °C). | Better suited for space-constrained automotive or industrial enclosures requiring wider thermal margin and enhanced ESD robustness. | Select when board layout demands smaller footprint or ambient temperature exceeds 85 °C. |
| CY8C4247LTI-483 | PSoC 4 (ARM Cortex-M0+) with 256 KB flash, 32 KB RAM, no USB PHY, but higher analog performance (12-bit SAR ADC, 1 Msps). | Preferred for cost-sensitive, non-USB applications needing higher processing throughput and lower active power (150 µA/MHz). | Choose when migrating to ARM ecosystem, requiring larger code space, or prioritizing ultra-low active current over USB integration. |
Compared with CY8C3246LTI-125, the CY8C3247LTI-144 offers superior thermal and ESD resilience in compact packaging, while the CY8C4247LTI-483 trades USB capability for ARM performance and lower active power-making the original optimal for USB-dependent, mixed-signal embedded control where 8051 toolchain maturity and analog integration are critical.
Availability
CY8C3246LTI-125 is available at Aetrix Electronics and suitable for industrial HMI panels, portable medical sensor nodes, smart home energy monitors, and automotive body control subsystems requiring stable component supply across long product lifecycles.
Supply support for CY8C3246LTI-125 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 the PSoC® family, delivering programmable analog-digital SoCs for embedded control, sensing, and human-machine interface applications.
The CY8C32 series belongs to the PSoC 3 platform, designed specifically for cost-sensitive, low-power embedded systems requiring high analog precision, flexible digital logic, and integrated USB connectivity without external transceivers.
FAQ
Does CY8C3246LTI-125 support USB device enumeration without external crystal?
Yes-it supports USB full-speed operation using its internal 48 MHz IMO clock with ±2% accuracy, certified under TID#40770053. An external 12 MHz crystal is optional for tighter USB timing tolerance or suspend/resume synchronization, but not required for basic enumeration and data transfer.
What is the maximum number of simultaneous CapSense® sensors supported?
The device supports up to 62 capacitive sensing channels-either self-capacitance (62 buttons/sliders) or mutual-capacitance (31 TX/RX pairs)-using dedicated hardware scan engine and built-in IDACs. All GPIO pins are CapSense-capable, and scan resolution is configurable from 8 to 16 bits per sensor.
Can the 12-bit Delta-Sigma ADC operate concurrently with USB data transfer?
Yes-the ADC, USB, and DMA operate independently. The 24-channel DMA controller can autonomously move ADC conversion results to memory while USB endpoints stream data to host, with no CPU intervention required. This enables continuous sensor logging and real-time USB telemetry simultaneously.
Is the 200 nA hibernate mode achievable with all peripherals disabled?
Yes-hibernate mode retains SRAM contents and wakes via GPIO, RTC alarm, or WDT timeout while drawing only 200 nA. All clocks, analog blocks, and digital peripherals are powered down except the ILO and RTC circuitry; VDDIO domains may remain active if external circuitry requires biasing.
CY8C3246LTI-125 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, USB
- Peripherals:
- CapSense, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 38
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 8K 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:
CY8C3246LTI-125 FAQ
1.How can I place an order for CY8C3246LTI-125 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3246LTI-125 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 CY8C3246LTI-125 reliable?
The price and inventory of CY8C3246LTI-125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3246LTI-125 is usually 5 days.
3.What payment methods are accepted for CY8C3246LTI-125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3246LTI-125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3246LTI-125?
CY8C3246LTI-125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3246LTI-125 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 CY8C3246LTI-125?
For technical support, including CY8C3246LTI-125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3246LTI-125 requirements.
6.How does Aetrix verify that CY8C3246LTI-125 is sourced from the original manufacturer or authorized distributors?
All CY8C3246LTI-125 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 CY8C3246LTI-125 meets industry standards.
7.What is the process for return or replacement of CY8C3246LTI-125?
All CY8C3246LTI-125 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3246LTI-125, 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 CY8C3246LTI-125 part is unused and in its original packaging.
Return procedure for CY8C3246LTI-125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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