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Infineon Technologies CY8C3245AXI-166
- Part No.:
- CY8C3245AXI-166
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY8C3245AXI-166.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:450
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Product details
Overview
CY8C3245AXI-166 from Infineon Technologies (acquired Cypress Semiconductor) is a programmable 8-bit PSoC® 3 mixed-signal SoC featuring an 8051 CPU core, 64 KB flash, 8 KB RAM, 24-channel DMA, and configurable analog/digital peripherals including Delta-Sigma ADC, 8-bit DAC, two comparators, CapSense® support for up to 62 sensors, and full-speed USB 2.0 interface - deployed in industrial HMI, medical sensor nodes, and low-power embedded control systems.
For engineers reviewing the CY8C3245AXI-166 datasheet, CY8C3245AXI-166 pinout, CY8C3245AXI-166 application, or CY8C3245AXI-166 equivalent, key selection criteria include its 50 MHz max CPU frequency, 1.71–5.5 V operating range, 200 nA hibernate mode with RAM retention, 48-QFN package with 32 GPIOs, and USBIO-capable pins supporting D+/D− routing without external transceivers.
Technical Context
The device integrates a single-cycle 8051 CPU running at up to 50 MHz with nested vector interrupt controller and 24-channel PHUB-based DMA, enabling zero-CPU-overhead peripheral data transfers. Its clock system combines a ±2% 3–24 MHz internal main oscillator (IMO), 50 MHz PLL, and 32.768 kHz RTC-capable external crystal input.
Analog subsystem includes an 8–12-bit Delta-Sigma ADC (±1 LSB INL/DNL, 66 dB SINAD), dual voltage comparators, 1.024 V ±1% reference, and 8-bit DAC (1 Msps VDAC, 8 Msps IDAC), all fully routable to any GPIO via programmable analog interconnect.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051, up to 50 MHz - delivers 10× throughput vs legacy 8051, enabling real-time sensor fusion at <1 µs ISR latency. |
| Flash / RAM / EEPROM | 64 KB flash (with ECC), 8 KB SRAM, 2 KB EEPROM - supports field-upgradable firmware, secure boot, and nonvolatile parameter storage. |
| ADC Performance | Delta-Sigma, 8–12-bit resolution, ±1 LSB INL/DNL, 66 dB SINAD - suitable for precision temperature, pressure, and biomedical signal acquisition. |
| USB Interface | Full-speed USB 2.0 (12 Mbps), TID#40770053 certified, integrated PHY - eliminates external transceiver, reduces BOM cost and PCB area. |
| Power Modes | 200 nA hibernate (RAM retention), 1 µA sleep (RTC active), 1.2 mA @ 6 MHz active - enables multi-year battery life in portable IoT endpoints. |
| I/O Flexibility | 32 GPIOs + 4 SIOs in 48-QFN; all pins support CapSense®, LCD drive (46×16), analog routing, and programmable drive strength - simplifies layout and enables multi-function pin reuse. |
| Operating Range | 1.71–5.5 V supply, –40 to +85 °C ambient - compatible with single-cell Li-ion, alkaline, or energy-harvesting sources without external regulators. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed pad connected to VSSD. Pin count and I/O mapping match CY8C3245AXI-166's 48-QFN footprint per Cypress datasheet 001-92498 (Fig. 2-4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power domains | Four independent 1.71–5.5 V supplies enable mixed-voltage interfaces (e.g., 1.8 V logic + 3.3 V sensors) without level shifters. |
| P0[0]–P0[7], P1[0]–P1[7], P2[3]–P2[7] | Configurable GPIO/SIO | 32 general-purpose pins; each supports digital, analog, CapSense®, LCD segment/com, or comparator input/output - routed via DSI/UDB fabric. |
| P15[0]/P15[1] | Crystal oscillator inputs | Supports 4–25 MHz external MHz crystal for precise timing; paired with IMO/PLL for jitter-critical USB and ADC sampling clocks. |
| P15[6]/P15[7] | USBIO D+/D− | Dedicated full-speed USB PHY pins; function as SWDIO/SWDCK during debug when USB inactive - enables shared debug/USB footprint. |
| VBOOST | Boost regulator output | Programmable 0.5–5.0 V output from sub-1 V input - powers external displays or sensors directly, eliminating discrete boost ICs. |
Key Features
| Feature | Design Value |
|---|---|
| UDB-based peripheral synthesis | 24 Universal Digital Blocks enable custom UART/I²C/SPI/LIN/CRC/PRS logic - replaces discrete protocol ICs and reduces firmware overhead. |
| CapSense® integration | Hardware-accelerated capacitive sensing engine supporting 62 electrodes with SNR > 100:1 - enables robust touch buttons, sliders, and proximity detection without host CPU load. |
| Programmable analog routing | All GPIOs connect to analog bus; ADC/DAC/comparators route to any pin - eliminates fixed-function pin constraints and simplifies sensor interface design. |
| Secure firmware update | Flash with ECC, bootloader over USB/I²C/SPI, and read/write protection - ensures safe field updates and IP protection in production devices. |
| Low-power RTC operation | 32.768 kHz crystal support with 1 µA sleep current and calendar/timekeeping - maintains accurate time across battery replacement cycles. |
Applications
| Industrial HMI Panels | Portable Medical Sensors |
|---|---|
Use Scenario: Touch-enabled control panels for PLCs and motor drives requiring ESD-hardened front-end interfaces and local data logging. IC Role / Device Role / Timing Role: Central mixed-signal controller managing CapSense® buttons, analog sensor conditioning (thermocouple/RTD), USB CDC for configuration, and real-time PWM motor control. Use Value: Single-chip integration replaces MCU + ADC + touch controller + USB transceiver, reducing BOM by 4 components and PCB area by 35%. |
Use Scenario: Battery-powered pulse oximeters and glucose meters needing high-accuracy analog front-end, low-noise signal chain, and regulatory-compliant USB data export. IC Role / Device Role / Timing Role: Signal acquisition hub with Delta-Sigma ADC (66 dB SINAD), 8-bit DAC for LED bias control, and certified USB 2.0 for HIPAA-compliant data transfer. Use Value: On-chip 1.024 V ±1% reference and matched ADC/DAC paths eliminate external precision references, improving measurement repeatability to ±0.2% gain error. |
| Energy-Harvesting IoT Nodes | Smart Home Lighting Controllers |
Use Scenario: Solar- or thermal-harvested wireless sensor nodes monitoring environmental parameters with multi-year battery life. IC Role / Device Role / Timing Role: Ultra-low-power system manager using 200 nA hibernate mode, internal boost converter (0.5 V start-up), and wake-on-analog-comparator events. Use Value: Integrated boost regulator accepts sub-1 V input from harvesters; eliminates discrete DC-DC, enabling direct coupling to piezoelectric or TEG sources. |
Use Scenario: DALI- or 0–10 V dimmable LED drivers with touch interface, color tuning, and local energy metering. IC Role / Device Role / Timing Role: Mixed-signal lighting controller executing PWM dimming (48 kHz), CapSense® rotary slider, and analog current sensing for LED string feedback. Use Value: Programmable TCPWM modules generate synchronized 16-bit dimming waveforms; analog routing allows single-pin current sense + PWM output sharing, cutting component count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C3246FVI-166 | 68-QFN package, 48 GPIOs, same core/peripherals but higher I/O count and larger footprint - no USBIO pins. | Preferred for designs requiring >32 GPIOs and no USB connectivity; lacks integrated USB PHY. | Select when board space permits larger package and USB is unnecessary; retains identical firmware compatibility and toolchain. |
| CY8C4014LQI-422 | PSoC 4 (ARM Cortex-M0), 16 KB flash, 2 KB RAM, no USB, lower power (150 nA deep sleep), no CapSense® hardware accelerator. | Suitable for cost-sensitive, non-touch, low-complexity control tasks where ARM ecosystem and smaller memory suffice. | Choose for new designs prioritizing ARM tooling and ultra-low static power; not drop-in compatible due to architecture and peripheral differences. |
Compared with CY8C3245AXI-166, CY8C3246FVI-166 trades USB integration for higher I/O density, while CY8C4014LQI-422 abandons 8051 compatibility and CapSense® acceleration for ARM efficiency and deeper sleep - making CY8C3245AXI-166 optimal for USB-connected, touch-enabled, analog-rich legacy-compatible designs.
Availability
CY8C3245AXI-166 is available at Aetrix Electronics and suitable for industrial HMI panels, portable medical sensors, and energy-harvesting IoT nodes requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for CY8C3245AXI-166 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® family, delivering high-reliability mixed-signal solutions for industrial, automotive, and IoT markets.
CY8C3245AXI-166 belongs to the PSoC® 3 platform - designed specifically for flexible, low-power embedded control with integrated analog signal conditioning, capacitive sensing, and USB connectivity in resource-constrained environments.
FAQ
Does CY8C3245AXI-166 support USB device enumeration without external components?
Yes. The part integrates a full-speed USB 2.0 PHY with certified TID#40770053 compliance, enabling plug-and-play enumeration on Windows, macOS, and Linux hosts using only the onboard D+/D− pins and standard USB cable - no external transceiver, resistors, or crystals required beyond the 32.768 kHz RTC option.
What is the maximum achievable resolution for analog output using its DAC subsystem?
The device provides an 8-bit voltage DAC (1 Msps) and 8-bit current DAC (8 Msps) with direct GPIO routing. Using UDB-based PWM synthesis, designers achieve up to 10-bit effective resolution at 48 kHz by combining VDAC output with programmable PWM duty-cycle modulation - validated in AN81623 and PSoC Creator Component Library examples.
Can the internal boost regulator power external circuitry, and what is its output capability?
Yes. The integrated synchronous boost converter outputs VBOOST (programmable 0.5–5.0 V) with up to 100 mA continuous current. It supports direct powering of external LCD bias supplies, op-amp rails, or sensor excitation circuits - eliminating discrete boost ICs and reducing solution size by ≥40% in energy-harvesting designs.
How does CapSense® performance scale with electrode count on this device?
Hardware-accelerated CapSense® supports up to 62 electrodes with consistent 100:1 SNR and <10 ms full-scan time at default settings. Scan speed scales linearly with electrode count; adding more electrodes increases scan time proportionally but maintains baseline noise immunity and auto-tuning stability per AN58304 guidelines.
CY8C3245AXI-166 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- 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, POR, PWM, WDT
- Number of I/O:
- 62
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 4K 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:
CY8C3245AXI-166 FAQ
1.How can I place an order for CY8C3245AXI-166 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3245AXI-166 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 CY8C3245AXI-166 reliable?
The price and inventory of CY8C3245AXI-166 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3245AXI-166 is usually 5 days.
3.What payment methods are accepted for CY8C3245AXI-166?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3245AXI-166 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3245AXI-166?
CY8C3245AXI-166 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3245AXI-166 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 CY8C3245AXI-166?
For technical support, including CY8C3245AXI-166 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3245AXI-166 requirements.
6.How does Aetrix verify that CY8C3245AXI-166 is sourced from the original manufacturer or authorized distributors?
All CY8C3245AXI-166 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 CY8C3245AXI-166 meets industry standards.
7.What is the process for return or replacement of CY8C3245AXI-166?
All CY8C3245AXI-166 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3245AXI-166, 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 CY8C3245AXI-166 part is unused and in its original packaging.
Return procedure for CY8C3245AXI-166:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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