Infineon Technologies CY8C22345-24SXIT

Overview

CY8C22345-24SXIT from Cypress Semiconductor is a programmable PSoC® 1 System-on-Chip integrating an M8C 8-bit Harvard-architecture CPU (24 MHz max), 16 KB flash, 1 KB SRAM, six analog and eight digital configurable blocks, and a 10-bit SAR ADC (200 ksps, ±1.5 LSB DNL). It operates from 3.0–5.25 V across –40 °C to +85 °C and supports CapSense® with dual CSD channel scanning - used in industrial HMI control panels with integrated touch and motor PWM control.

For engineers reviewing the CY8C22345-24SXIT datasheet, CY8C22345-24SXIT pinout, CY8C22345-24SXIT application, or CY8C22345-24SXIT equivalent, key selection criteria include verified 24 MHz IMO accuracy (±5% over industrial temp), GPIO drive strength (25 mA sink/10 mA source), analog input count (up to 38), I²C master/slave support up to 400 kHz, and ISSP-enabled in-system programming capability.

Technical Context

The CY8C22345-24SXIT implements a mixed-signal reconfigurable architecture where digital PSoC blocks (eight total) can be combined into 8–32-bit timers, PWMs with deadband, UART, SPI, CRC, and PRS modules - all routable to any GPIO via global digital interconnect. Analog resources include six Type "E" blocks supporting dual 8-bit ADCs or comparators, plus a dedicated 10-bit SAR ADC with sample-and-hold.

Its clock system integrates an internal 24 MHz IMO (±5% over –40 °C to +85 °C), optional 32.768 kHz ECO with PLL for crystal-accurate 24 MHz, and independent CSD_CLK/CNT_CLK dividers for CapSense timing. Synchronization between analog module operation and digital block triggers or external signals is natively supported.

Key Specifications

Pinout & Package

Package: 28-pin SOIC (Small Outline Integrated Circuit), body width 3.9 mm, lead pitch 1.27 mm - RoHS-compliant, surface-mount compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C21345-24LTXI, CY8C22345-24SXIT delivers full CapSense dual-channel capability and six analog blocks for richer HMI and sensor processing; versus CY8C22545-24PVXI, it offers identical core performance in a smaller 28-pin SOIC footprint - ideal for cost- and space-sensitive industrial controls.

Availability

CY8C22345-24SXIT is available at Aetrix Electronics and suitable for industrial HMI control panels, smart appliance motor controllers, programmable sensor nodes, and medical diagnostic handhelds requiring stable component supply and long-term manufacturability.

Supply support for CY8C22345-24SXIT 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

Cypress Semiconductor (now part of Infineon Technologies) designs programmable mixed-signal ICs for embedded control, offering PSoC architectures that unify analog, digital, and memory resources on a single die.

The CY8C22345 belongs to the PSoC® 1 family - engineered for cost-sensitive, low-to-mid complexity industrial and consumer systems requiring configurable peripherals, CapSense integration, and field-upgradable firmware without external logic.

FAQ

What is the maximum operating frequency of the M8C core in CY8C22345-24SXIT?

The M8C processor in CY8C22345-24SXIT runs at up to 24 MHz, enabled by the internal main oscillator (IMO). This frequency is guaranteed across the full industrial temperature range (–40 °C to +85 °C) with ±5% tolerance, and supports deterministic real-time execution of control loops and CapSense scanning routines.

Does CY8C22345-24SXIT support hardware-accelerated cryptographic functions?

No, CY8C22345-24SXIT does not include dedicated cryptographic accelerators or hardware security modules. It provides EEPROM emulation in flash and configurable protection levels for code blocks, but encryption/decryption operations must be implemented in firmware using the M8C's 8×8 multiply and 32-bit accumulate instructions.

Can the 10-bit SAR ADC operate simultaneously with CapSense scanning?

Yes - the 10-bit SAR ADC and CapSense subsystem operate independently. The ADC uses its own sample-and-hold and conversion logic, while CapSense relies on dedicated IDACs and CSD/CNT clocks. Their operations can be synchronized via digital block triggers or external signals, enabling time-aligned sensor and touch acquisition in motion-sensitive applications.

Is external crystal required for accurate real-time clock functionality?

No - CY8C22345-24SXIT includes an internal 32 kHz low-speed oscillator (ILO) for basic sleep/wake timing. For RTC-grade accuracy (<±20 ppm), a 32.768 kHz external crystal connected to XTAL1/XTAL2 is required; this crystal may also feed the PLL to generate a crystal-accurate 24 MHz system clock.