Infineon Technologies CY8C22345-12PVXE

Overview

CY8C22345-12PVXE 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, AEC-Q100 qualified operation from –40 °C to +85 °C, and integrated CapSense® for two-channel touch sensing. It serves as a configurable mixed-signal controller in body electronics modules requiring embedded analog/digital peripheral integration.

For engineers reviewing the CY8C22345-12PVXE datasheet, CY8C22345-12PVXE pinout, CY8C22345-12PVXE application, or CY8C22345-12PVXE equivalent, key selection criteria include AEC-Q100 Grade A qualification, on-chip 10-bit SAR ADC with sample-and-hold, dual CapSense channels with dedicated timers and current DACs, and support for Immersion® TouchSense® haptics in H-variant derivatives.

Technical Context

The device implements a fixed-function M8C core with interrupt-driven real-time control, paired with configurable digital blocks (up to eight 8-bit resources combinable into 8–32-bit peripherals) and six Type 'E' analog blocks-four continuous-time and two switched-capacitor-enabling custom signal chains. Clocking includes a 24 MHz internal main oscillator (IMO), optional 32.768 kHz crystal input with PLL for crystal-accurate 24 MHz, and low-power ILO for sleep/wake timing.

Analog subsystem integration supports simultaneous two-channel CapSense scanning via dedicated 16-bit timers, two current DACs for firmware-tunable sensor drive, and shared analog bus routing to all GPIOs. Digital resources include UART, SPI, I²C (up to 400 kHz), PWM with deadband, CRC, PRS, and shift register modules-all connectable to any GPIO through global digital interconnect.

Key Specifications

Pinout & Package

Package: 28-pin SSOP (Small Outline Integrated Circuit, Plastic, Shrink), 300 mil width, JEDEC MS-012AC compliant, thermal pad not present, moisture sensitivity level (MSL) 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C22345-24PVXE and CY8C22345H-12PVXE, the CY8C22345-12PVXE provides optimal cost-performance balance for AEC-Q100 body electronics where 12 MHz CPU throughput and absence of haptics IP suffice-reducing unit cost without sacrificing CapSense, ADC, or communication capability.

Availability

CY8C22345-12PVXE is available at Aetrix Electronics and suitable for automotive door modules, seat position memory systems, steering wheel interfaces, and climate control panels requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY8C22345-12PVXE 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 microcontrollers, and security solutions with broad industrial and automotive reach.

This device belongs to the PSoC® 1 family-designed specifically for cost-sensitive, AEC-Q100-compliant automotive body electronics requiring configurable analog/digital peripherals in compact packages without external component dependencies.

FAQ

Is CY8C22345-12PVXE pin-compatible with CY8C22345-24PVXE?

Yes-both share identical 28-pin SSOP package and pin mapping. The only difference is maximum CPU frequency (12 MHz vs. 24 MHz) and corresponding MIPS rating (2 vs. 4). No PCB redesign is required when upgrading within the same package variant, though firmware timing assumptions must be validated.

Does CY8C22345-12PVXE support I²C multi-master operation?

Yes-it implements a full I²C module supporting master, slave, and multi-master modes with hardware address detection, 7-bit addressing, and clock stretching. It operates up to 400 kHz (Fast Mode) and integrates arbitration logic to resolve bus contention during multi-master transactions.

Can CapSense® channels operate independently while the CPU is in deep sleep?

No-CapSense scanning requires active CPU intervention to configure analog blocks, read results, and manage baselines. While the ILO powers sleep timers and WDT, CapSense functionality is suspended during deep sleep; wake-up must occur before initiating scan sequences.

What is the maximum allowed external clock frequency on the ECO pins?

The ECO (External Crystal Oscillator) input is specified only for 32.768 kHz crystals per datasheet Rev. *O. Driving it with higher frequencies violates AC electrical specifications and may cause oscillator startup failure or instability; no support exists for MHz-range external clocks on these pins.