Infineon Technologies CY22393FXE

Overview

CY22393FXE from Cypress Semiconductor is an AEC-Q100-qualified automotive three-PLL serial- and flash-programmable clock generator in 16-pin TSSOP. It delivers up to four independent output frequencies (CLKA–CLKD, CLKE) with ultra-wide programmability: 8-bit Q, 11-bit P, and 7-bit post-dividers per PLL; supports crystal load capacitance tuning from 6 pF to 30 pF; operates at 3.3 V; and enables glitch-free frequency switching via S0/S1/S2 inputs for infotainment timing control.

For engineers reviewing the CY22393FXE datasheet, CY22393FXE pinout, CY22393FXE application, or CY22393FXE equivalent, key selection considerations include its triple-PLL architecture, field-programmable flash memory, digital VCXO capability, automotive-grade temperature range (–40°C to +125°C), and support for dynamic reconfiguration via two-wire serial interface.

Technical Context

The CY22393FXE integrates three fully independent PLLs-each with 8-bit Q and 11-bit P dividers-feeding a 4×4 crosspoint switch that routes reference, PLL1, PLL2, or PLL3 to four configurable 7-bit output dividers (CLKA–CLKD) or a fixed /2-/3-/4 divider for CLKE. XBUF provides buffered reference output.

It supports in-system configuration via two-wire serial interface (SDAT/SCLK), includes digital VCXO functionality through programmable on-die crystal load capacitors (6–30 pF in 0.375-pF steps), and implements power management via SHUTDOWN/OE (full chip shutdown) and S2/SUSPEND (selective PLL/output disable).

Key Specifications

Pinout & Package

Package: 16-pin TSSOP (4.4 mm × 5.0 mm, 0.65 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-PLL clock generator applications.

Compared with Si5351A-B-GM and ICS853S01I, the CY22393FXE uniquely combines automotive qualification, flash-based configuration persistence, hardware-based frequency switching, and digitally tunable crystal loading-making it the only option for safety-critical, field-upgradable timing in modern E/E architectures.

Availability

CY22393FXE is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS sensor modules, and digital instrument clusters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY22393FXE 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 mixed-signal ICs for automotive, industrial, and IoT applications, with emphasis on reliability, integration, and programmability.

The CY22393FXE belongs to Cypress's automotive clock generator product line, engineered specifically for deterministic, low-jitter timing in safety-critical vehicle subsystems with field-reconfigurable requirements.

FAQ

What is the maximum input frequency supported on XTALIN?

The CY22393FXE accepts either a crystal (fundamental mode, parallel resonant) or an external clock on XTALIN. When used with a driven clock input, the maximum frequency is 166 MHz. For crystal operation, typical ranges are 1–54 MHz, with optimal stability achieved using crystals rated for 12–18 pF load capacitance and specified drive-level compliance.

How does the digital VCXO function affect all output clocks?

Adjusting the on-die crystal load capacitance changes the reference oscillator frequency, which directly scales all PLL-derived outputs proportionally-since PLL1, PLL2, and PLL3 all lock to the same reference. This enables system-wide frequency pulling (±150 ppm) but requires recalibration of all derived clocks if absolute accuracy is critical.

Can CLKA and CLKB operate at different frequencies simultaneously?

No-CLKA and CLKB share a single dual-register 7-bit divider and must be programmed to the same register (0 or 1). Therefore, they always output frequencies derived from identical divider values, though their source (e.g., PLL1 vs. PLL2) can differ via the crosspoint switch configuration stored in flash.

Is CyClocksRT software required for programming the CY22393FXE?

CyClocksRT is Cypress's official configuration tool and strongly recommended for full feature access-including jitter optimization, frequency validation, and register bitmap generation-but not strictly required. The device supports raw two-wire serial programming using documented address/data maps; however, manual register writes risk misconfiguration without validation logic built into CyClocksRT.