Infineon Technologies CY8C22645-24PVXA

Overview

CY8C22645-24PVXA from Infineon Technologies (formerly Cypress) is an automotive-grade PSoC® programmable system-on-chip featuring an M8C 8-bit Harvard-architecture CPU running at up to 24 MHz, 16 KB flash, 1 KB SRAM, and six Type 'E' analog blocks with integrated 10-bit SAR ADC. It operates from 3.0 V to 5.25 V across –40 °C to +85 °C (A-grade), supports CapSense® for touch sensing, and integrates I²C, SPI, UART, and PWM peripherals for embedded control in body electronics and powertrain subsystems.

For engineers reviewing the CY8C22645-24PVXA datasheet, CY8C22645-24PVXA pinout, CY8C22645-24PVXA application, or CY8C22645-24PVXA equivalent, key selection criteria include AEC-Q100 qualification, programmable analog/digital block configuration, CapSense® resource allocation, 24 MHz IMO + PLL clocking, and GPIO drive strength (25 mA sink / 10 mA source) for direct sensor/actuator interfacing.

Technical Context

The device implements a configurable mixed-signal architecture where digital PSoC blocks (up to eight) and analog blocks (six Type 'E') interconnect via global digital/analog buses. Its M8C core executes instructions at up to 4 MIPS with hardware multiply-accumulate support, enabling real-time control loops without external co-processors.

Timing is managed by multiple synchronized clock sources: a 24 MHz internal main oscillator (IMO), optional 32.768 kHz crystal with PLL for 24 MHz accuracy, and a low-power 32 kHz internal low-speed oscillator (ILO) for sleep/wake functions. The 10-bit SAR ADC includes sample-and-hold and supports single/dual conversion modes with programmable reference selection.

Key Specifications

Pinout & Package

Package: 28-pin SSOP (Small Outline Integrated Circuit, Plastic, Shrink), 300 mil width, JEDEC MS-012AC compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SPC560B50L5 and RL78/F13, CY8C22645-24PVXA uniquely combines AEC-Q100 qualification, field-programmable analog/digital blocks, and CapSense® in a compact 28-pin package-enabling rapid customization of sensor interfaces and human-machine interaction without adding discrete components.

Availability

CY8C22645-24PVXA is available at Aetrix Electronics and suitable for automotive body electronics, climate control systems, and seat control modules requiring stable component supply and long-term lifecycle support.

Supply support for CY8C22645-24PVXA 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 is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive, and security solutions.

This device belongs to the PSoC® 1 family-designed specifically for automotive and industrial embedded applications requiring configurable analog/digital peripherals, AEC-Q100 compliance, and rapid prototyping of mixed-signal functions in a single chip.

FAQ

Is CY8C22645-24PVXA pin-compatible with other CY8C22x45 variants?

Yes-CY8C22645-24PVXA shares the same 28-pin SSOP package and pinout with CY8C22345 and CY8C22345H. Differences lie in internal configuration (e.g., CapSense® haptics in CY8C22345H) and flash size (16 KB vs. 8 KB in CY8C22345), but all share identical GPIO mapping, power, and debug pin assignments.

Does this device support in-circuit programming after soldering?

Yes-CY8C22645-24PVXA supports In-System Serial Programming (ISSP) via SWDIO/SWCLK pins. No bootloader is required; programming can be performed through Infineon's MiniProg3 or compatible tools using standard JTAG/SWD protocols, even in fully assembled automotive modules.

What is the maximum achievable resolution for CapSense® sensing on this part?

The device supports two independent CapSense® channels with simultaneous scanning, achieving effective resolution up to 12-bit equivalent through firmware-averaged current DAC output and dedicated 16-bit timers. Actual noise-limited resolution depends on PCB layout and sensor design but typically reaches 10–11 bits in production automotive touch panels.

Can the internal 24 MHz oscillator meet timing requirements for UART at 115.2 kbps?

Yes-the internal 24 MHz IMO provides ±2% accuracy across temperature and voltage, sufficient for UART operation at 115.2 kbps with standard 16× oversampling. For tighter tolerances (e.g., automotive diagnostics), the optional 32.768 kHz crystal with PLL yields a 24 MHz clock with <±50 ppm stability, supporting ISO 14229 UDS compliance.