Infineon Technologies CY8C3246PVI-147

Overview

CY8C3246PVI-147 from Infineon Technologies (formerly 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 in a 48-pin SSOP package. It operates from 1.71–5.5 V, supports up to 50 MHz clocking via internal PLL, and delivers 12 mA active current at 48 MHz. It is used in human-interface embedded systems requiring mixed-signal integration and low-power touch control.

For engineers reviewing the CY8C3246PVI-147 datasheet, CY8C3246PVI-147 pinout, CY8C3246PVI-147 application, or CY8C3246PVI-147 equivalent, key selection criteria include its 29 GPIO count with full analog/digital routing flexibility, integrated Delta-Sigma ADC (12-bit, ±1 LSB INL), USB 2.0 FS interface, and support for bootloader programming over I²C, SPI, UART, or USB.

Technical Context

The device implements a single-cycle 8051 CPU core with 32 interrupt inputs and a 24-channel DMA controller, enabling high-efficiency peripheral-to-memory data transfers without CPU intervention. Its digital subsystem uses 24 Universal Digital Blocks (UDBs) to implement configurable logic including UART, SPI, I²S, LIN, CRC, PRS, quadrature decoders, and PWM generators up to 32 bits.

Analog functionality includes 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 dedicated CapSense® blocks supporting up to 62 sensors. All analog and digital signals are fully routable to any GPIO via programmable interconnect.

Key Specifications

Pinout & Package

Package: 48-pin SSOP (0.635 mm pitch), RoHS-compliant, body size 15.4 × 7.6 mm. Thermal pad not present; standard surface-mount assembly applies.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable mixed-signal microcontroller applications.

Compared with CY8C3246PVI-147, CY8C3247FVI-147 offers identical architecture with enhanced I/O scalability in QFN, while CY8C4046LQI-432 shifts to ARM with lower power but sacrifices USB 2.0 FS compliance and analog precision-making the original optimal for USB-connected, high-fidelity mixed-signal HMI.

Availability

CY8C3246PVI-147 is available at Aetrix Electronics and suitable for industrial HMI panels, medical patient monitors, smart home thermostats, and automotive cabin controls requiring stable component supply across extended product lifecycles.

Supply support for CY8C3246PVI-147 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 develops, manufactures, and supports the PSoC® family of programmable system-on-chip solutions for embedded control and human-interface applications.

CY8C3246PVI-147 belongs to the PSoC® 3 product line, designed specifically for cost-effective, low-power, mixed-signal embedded systems requiring field-programmable analog and digital resources in a single chip.

FAQ

Does CY8C3246PVI-147 support USB device enumeration without external components?

Yes. The part integrates a certified USB 2.0 Full-Speed PHY (TID#40770053) with internal termination and voltage regulation. No external resistors, capacitors, or transceivers are required for basic USB device enumeration and data transfer at 12 Mbps.

What is the maximum number of CapSense® electrodes supported on this device?

CY8C3246PVI-147 supports up to 62 CapSense® electrodes using its dedicated CSD (Capacitive Sigma-Delta) block and all 29 GPIO pins. SmartSense™ auto-tuning eliminates manual baseline calibration and maintains stability across temperature and humidity variations.

Can the internal 12-bit Delta-Sigma ADC operate simultaneously with the 8-bit DAC?

Yes. The ADC and DAC are independently clocked and routed through separate analog buses. They can operate concurrently-for example, acquiring sensor data while generating a reference waveform-without resource conflict or timing dependency.

Is the 48-SSOP package of CY8C3246PVI-147 lead-free and RoHS compliant?

Yes. The CY8C3246PVI-147 in 48-SSOP packaging meets RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3 (MSL3). Lead-free solder reflow profile follows IPC/JEDEC J-STD-020D specifications.