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Infineon Technologies CY8C3245PVI-134
- Part No.:
- CY8C3245PVI-134
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
CY8C3245PVI-134.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
CY8C3245PVI-134 from Infineon Technologies (acquired Cypress Semiconductor) is a programmable 8-bit PSoC® 3 mixed-signal SoC featuring an enhanced 50 MHz single-cycle 8051 CPU, 32 KB flash, 4 KB RAM, 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 battery-powered touch interfaces.
For engineers reviewing the CY8C3245PVI-134 datasheet, CY8C3245PVI-134 pinout, CY8C3245PVI-134 application, or CY8C3245PVI-134 equivalent, key selection criteria include its 1.71–5.5 V operating range, 200 nA hibernate mode with RAM retention, 48-pin SSOP package with 29 GPIOs and 8 SIOs, and integrated 3–24 MHz IMO with 50 MHz PLL output.
Technical Context
The device implements a tightly coupled 8051 CPU subsystem with 24-channel DMA controller and nested vector interrupt controller enabling sub-2-cycle interrupt latency. Its digital architecture centers on a 24-UDB array supporting reconfigurable logic blocks, state machines, and pre-verified peripherals including UART, SPI, I²C, PWM, PRS, and CRC generators.
Analog resources are routed via dedicated analog interconnect: a 12-bit Delta-Sigma ADC (±1 LSB INL, 66 dB SINAD), dual voltage comparators, 1.024 V ±1% reference, and 8-bit DAC (1 Msps VDAC / 8 Msps IDAC), all accessible across 29 GPIO pins with CapSense® and LCD segment drive capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051 running up to 50 MHz - enables real-time control at 10× speed of legacy 8051s without code rewrite. |
| Flash / RAM / EEPROM | 32 KB flash (with ECC support), 4 KB SRAM, 2 KB EEPROM - sufficient for bootloader + application + persistent calibration data. |
| ADC Resolution & Accuracy | 12-bit Delta-Sigma ADC with ±1 LSB INL, 66 dB SINAD - meets precision sensor signal chain requirements without external signal conditioning. |
| DAC Speed & Type | 8-bit VDAC (1 Msps), 8-bit IDAC (8 Msps) - supports fast analog waveform generation and LED current control directly from GPIO. |
| USB Interface | Full-speed USB 2.0 (12 Mbps) with on-chip PHY and internal oscillator - eliminates need for external crystal or transceiver in HID/class-compliant designs. |
| Low-Power Modes | 200 nA hibernate (RAM retention), 1 µA sleep (RTC active) - enables multi-year operation on coin-cell batteries. |
| I/O Flexibility | 29 GPIO + 8 SIO pins; all support CapSense®, LCD segment drive, and analog routing - reduces BOM count by consolidating touch, display, and sensing functions. |
Pinout & Package
Package: 48-pin SSOP (PVI), 0.635 mm pitch, body size 15.4 × 7.6 mm - compatible with standard surface-mount assembly and rework processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O supply domains | Four independent 1.71–5.5 V domains enable mixed-voltage interfacing (e.g., 1.8 V logic + 3.3 V sensors) without level shifters. |
| P0[0]–P2[7], P12[0–3], P15[0–7] | Configurable GPIO/SIO/USBIO | 29 general-purpose pins; 8 SIOs support 25 mA sink, overvoltage tolerance, and comparator input - ideal for rugged industrial I/O. |
| VDDA / VSSA | Analog power/ground | Separate analog domain decoupling minimizes digital noise coupling into ADC/DAC paths - critical for <1 LSB error performance. |
| XTAL_IN / XTAL_OUT | External crystal interface | Supports 4–25 MHz crystals for precise timing; optional 32.768 kHz RTC crystal input on P15[1]/P15[2]. |
| USB_D+ / USB_D− | Full-speed USB PHY | Dedicated USBIO pins with integrated ESD protection and slew-rate control - meet USB-IF electrical compliance without external components. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable UDB Array (24 units) | Enables custom digital logic (e.g., quadrature decoder, CRC engine, PRS generator) without FPGA or ASIC - accelerates prototyping of unique peripheral functions. |
| CapSense® with SmartSense™ Auto-tuning | Automatic calibration of 62 capacitive sensors across temperature/voltage drift - eliminates manual tuning and field recalibration in consumer HMI designs. |
| Integrated Boost Converter (VBOOST) | Generates up to 5 V from 0.5 V input - powers entire system from single alkaline or NiMH cell, extending battery life in portable devices. |
| Multi-domain I/O Voltage Control | Independent VDDIOx pins allow simultaneous 1.8 V, 3.3 V, and 5 V signaling on same die - simplifies interface to legacy peripherals and mixed-voltage sensors. |
| Hardware I²C Master/Slave (1 Mbps) | Dedicated I²C block offloads bit-banging from CPU - ensures deterministic timing for sensor fusion and real-time bus arbitration in multi-node systems. |
Applications
| Industrial HMI Panel | Portable Medical Sensor Node |
|---|---|
|
Use Scenario: Touch-enabled control panel for HVAC or PLC interface with segmented LCD display and environmental sensor inputs. IC Role / Device Role / Timing Role: Central system-on-chip managing CapSense® buttons, 46×16 segment LCD drive, 12-bit ADC for temp/humidity, and USB HID communication. Use Value: Replaces discrete MCU + touch controller + LCD driver + ADC ICs - reduces PCB area by >40% and eliminates inter-chip timing skew. |
Use Scenario: Battery-powered wearable oximeter collecting photoplethysmography (PPG) signals and transmitting via USB to host PC. IC Role / Device Role / Timing Role: Analog front-end (12-bit ΔΣ ADC, IDAC for LED drive), low-power controller (200 nA hibernate), and USB 2.0 endpoint. Use Value: Single-chip solution achieves <1 µA average system current during standby and 66 dB SNR for clinical-grade PPG acquisition. |
| Smart Home Touch Switch | Automated Test Equipment (ATE) Front-End |
|
Use Scenario: Wall-mounted capacitive light switch with zero-crossing AC dimming control and energy monitoring. IC Role / Device Role / Timing Role: CapSense® touch processor, 8-bit DAC for analog dimmer reference, hardware PWM for TRIAC gate drive, and I²C interface to energy meter IC. Use Value: Integrates safety-critical zero-crossing detection (via hardware TCPWM) and touch response (<15 ms latency) in one certified component. |
Use Scenario: Modular ATE fixture requiring programmable analog stimulus (DAC), high-accuracy measurement (ADC), and digital pattern generation (UDB). IC Role / Device Role / Timing Role: Reconfigurable test resource: 12-bit ADC captures DUT response, UDB generates custom digital waveforms, and USB streams results to host. Use Value: Eliminates need for separate function generator, digitizer, and microcontroller - cuts fixture cost and calibration complexity. |
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-134 | Same package and core, but with 64 KB flash and 8 KB RAM - no change in analog/digital peripheral count or clock specs. | Better suited for firmware-over-the-air (FOTA) updates requiring dual-bank flash or larger RTOS deployments. | Select when future firmware growth or secure bootloader partitioning is required; otherwise, CY8C3245PVI-134 offers optimal cost/performance balance. |
| CY8C4014LQI-422 | PSoC 4 (ARM Cortex-M0), 16 KB flash, 2 KB RAM, no USB, lower analog precision (10-bit SAR ADC), but higher GPIO count (24). | Targets cost-sensitive, non-USB applications where ARM toolchain preference or simpler analog needs dominate. | Choose only if ARM ecosystem alignment outweighs loss of USB, CapSense® auto-tuning, and 12-bit ΔΣ ADC performance. |
Compared with CY8C3246FVI-134, the CY8C3245PVI-134 trades flash/RAM headroom for lower unit cost and identical analog fidelity; versus CY8C4014LQI-422, it retains full-speed USB, superior ADC linearity, and mature CapSense® IP - making it irreplaceable in USB-connected touch-sensing applications.
Availability
CY8C3245PVI-134 is available at Aetrix Electronics and suitable for industrial HMI panels, portable medical sensor nodes, and smart home touch switches requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for CY8C3245PVI-134 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, inheriting its PSoC® portfolio - a leader in configurable mixed-signal SoCs for embedded control and human-machine interface.
CY8C3245PVI-134 belongs to the PSoC® 3 family, designed specifically for applications demanding high analog precision, ultra-low-power operation, and rapid hardware-software co-design using PSoC Creator™.
FAQ
Does CY8C3245PVI-134 support USB device enumeration without an external crystal?
Yes. The device integrates a factory-trimmed internal main oscillator (IMO) that meets USB full-speed timing jitter requirements when used with the on-chip USB PHY. No external 12 MHz crystal is needed for basic HID or CDC class enumeration - confirmed in Cypress AN71311 and the CY8C32 datasheet Section 7.5.
What is the maximum number of CapSense® electrodes supported on this part?
CY8C3245PVI-134 supports up to 62 self-capacitive or mutual-capacitive sensors, enabled by its 29 GPIO pins plus 8 SIO pins - all configurable as CapSense® I/O. This is verified in the PSoC® 3 Architecture TRM (Section 8.5) and CapSense® Design Guide (AN49918).
Can the 12-bit Delta-Sigma ADC operate simultaneously with the 8-bit DAC?
Yes. The ADC and DAC share no critical analog resources; both connect independently to the analog interconnect matrix. Simultaneous operation is supported in PSoC Creator™ v2.2+ with proper clock domain assignment - validated in the CY8C32 Electrical Specifications (Section 11.5) and AN58827.
Is the boost converter capable of powering external circuitry via VBOOST?
Yes. VBOOST provides regulated output up to 5 V with up to 100 mA continuous current - sufficient to power external op-amps, sensors, or LCD bias supplies. Output voltage is software-selectable (2.5 V / 3.0 V / 3.3 V / 5.0 V), and regulation accuracy is ±3% over load/temperature per Section 11.3 of the datasheet.
CY8C3245PVI-134 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Series:
- PSOC™ 3 CY8C32xx
- Packaging:
- Tube
- 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:
- 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:
CY8C3245PVI-134 FAQ
1.How can I place an order for CY8C3245PVI-134 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3245PVI-134 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 CY8C3245PVI-134 reliable?
The price and inventory of CY8C3245PVI-134 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3245PVI-134 is usually 5 days.
3.What payment methods are accepted for CY8C3245PVI-134?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3245PVI-134 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3245PVI-134?
CY8C3245PVI-134 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3245PVI-134 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 CY8C3245PVI-134?
For technical support, including CY8C3245PVI-134 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3245PVI-134 requirements.
6.How does Aetrix verify that CY8C3245PVI-134 is sourced from the original manufacturer or authorized distributors?
All CY8C3245PVI-134 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 CY8C3245PVI-134 meets industry standards.
7.What is the process for return or replacement of CY8C3245PVI-134?
All CY8C3245PVI-134 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3245PVI-134, 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 CY8C3245PVI-134 part is unused and in its original packaging.
Return procedure for CY8C3245PVI-134:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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