Infineon Technologies CY8C3445AXE-097

Overview

CY8C3445AXE-097 from Cypress Semiconductor is an AEC-Q100 qualified automotive-grade PSoC® 3 programmable system-on-chip integrating an 8051 CPU core, up to 64 KB flash, 8 KB SRAM, 2 KB EEPROM, 24-channel DMA, full CAN 2.0b interface, USB 2.0 Full-Speed peripheral, and configurable analog/digital peripherals. It operates from 1.71 V to 5.5 V, supports –40 °C to +125 °C extended temperature range, and targets automotive body control modules requiring mixed-signal integration and firmware-upgradable functionality.

For engineers reviewing the CY8C3445AXE-097 datasheet, CY8C3445AXE-097 pinout, CY8C3445AXE-097 application, or CY8C3445AXE-097 equivalent, key selection criteria include its AEC-Q100 qualification, on-chip CAN 2.0b with 16 Rx/8 Tx buffers, delta-sigma ADC (12-bit, 192 ksps, 66 dB SINAD), USB FS PHY with internal oscillator, and 24 UDB-based digital logic blocks for custom peripheral synthesis.

Technical Context

The CY8C3445AXE-097 implements a single-cycle 8051 CPU core with 50 MHz max clocking, supported by a multilayer AHB bus, 24-channel DMA with chained descriptors, and programmable interrupt controller. Its digital subsystem centers on 24 universal digital blocks (UDBs) containing PLD logic and state machines, enabling synthesis of UART, SPI, LIN, PRS, CRC, quadrature decoders, and custom PWM sequencers.

Analog functionality is anchored by a 1.024 V ±0.1% internal reference, a configurable delta-sigma ADC (8–12-bit, ×0.25–×16 PGA gain), four 95-ns comparators, two 25-mA opamps, and two multifunction SC/CT blocks usable as PGAs, TIAs, or mixers. All analog signals route through dedicated analog interconnect to any of 62 GPIO pins.

Key Specifications

Pinout & Package

This device is packaged in a 100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per the CY8C34 Automotive Family Datasheet (001-57331 Rev. *G), Section 3 "Pin Descriptions".

Key Features

Applications

Equivalent & Alternatives

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

Compared with XMC4504-F100K1024 AC and S32K144HAT0MLHT, CY8C3445AXE-097 uniquely combines automotive qualification, on-chip USB FS, full CAN 2.0b, CapSense®, and reconfigurable analog/digital blocks-enabling rapid prototyping and late-stage firmware-driven feature changes without hardware revision.

Availability

CY8C3445AXE-097 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor hubs, infotainment touch panels, and portable medical monitoring devices requiring stable component supply across extended temperature and long product lifecycles.

Supply support for CY8C3445AXE-097 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 high-performance, programmable mixed-signal ICs for automotive, industrial, and consumer applications, emphasizing integration, flexibility, and qualification rigor.

The CY8C34 Automotive Family delivers configurable analog and digital resources around an 8051 core, targeting cost-sensitive, high-reliability automotive subsystems where firmware-upgradable functionality reduces design risk and time-to-market.

FAQ

Does CY8C3445AXE-097 require an external crystal for USB operation?

No. The device integrates a USB 2.0 Full-Speed PHY certified per USB-IF TID#40770053 and uses its internal oscillator for USB timing, eliminating the need for an external 12 MHz crystal or oscillator circuit. This reduces BOM count and board space while maintaining USB compliance.

What is the maximum operating temperature rating for CY8C3445AXE-097?

CY8C3445AXE-097 is rated for –40 °C to +125 °C extended temperature operation and is AEC-Q100 qualified to Grade 0, making it suitable for under-hood automotive applications where ambient temperatures exceed +105 °C.

Can all 62 GPIO pins be used simultaneously for analog input acquisition?

Yes. The device's analog routing architecture allows any GPIO pin to serve as an analog input channel. With the delta-sigma ADC configured for sequential scanning, up to 62 channels can be sampled-though practical throughput depends on resolution, PGA gain, and sample rate settings per channel.

Is the 2 KB EEPROM truly endurance-rated to 1 million write cycles?

Yes. The datasheet specifies 1 million write/erase cycles with 20-year data retention at +85 °C. This endurance is validated across process corners and temperature ranges, enabling reliable use for calibration storage, event logging, and configuration parameter retention in automotive and industrial deployments.