Infineon Technologies CY22150FZXCT

Overview

CY22150FZXCT from Infineon Technologies (formerly Cypress) is a single-PLL, flash-programmable and I²C-configurable clock generator delivering six low-skew, low-jitter outputs up to 200 MHz. It accepts 8–30 MHz crystal or 1–133 MHz driven reference inputs, operates at 3.3 V with optional 2.5 V output level, and targets industrial temperature range (–40°C to +85°C) applications in networking and telecom infrastructure.

For engineers reviewing the CY22150FZXCT datasheet, CY22150FZXCT pinout, CY22150FZXCT application, or CY22150FZXCT equivalent, key selection criteria include its field-programmable PLL architecture, nonvolatile flash reprogrammability (up to 100 cycles), I²C volatile configuration interface (address 0x69), and support for custom frequency synthesis across six independently configurable outputs.

Technical Context

The CY22150FZXCT implements a single analog PLL with programmable P and Q dividers (Qtotal = Q + 2, Q = 0–127) and dual post-divider banks (DIV1N/DIV2N, /2, /3, /4, bypass). Its VCO operates across 160–400 MHz, enabling output frequencies from 80 kHz to 200 MHz (3.3 V) or 166.6 MHz (2.5 V).

Frequency generation supports three modes: PLL-derived ((REF × P)/Q)/Post, direct REF division, or REF pass-through via crosspoint switch matrix. All six outputs-LCLK1–LCLK4, CLK5, CLK6-are individually assignable to either PLL output or reference source, with independent post-division and voltage-level control (VDDL).

Key Specifications

Pinout & Package

16-pin TSSOP (4.4 mm × 5.0 mm, 0.65 mm pitch), thermally enhanced with exposed pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

Two validated alternatives exist for CY22150FZXCT, differing in architecture, programmability, and temperature grade.

Compared with Si5338A-D-GM and ICS8430I-01T, the CY22150FZXCT uniquely combines flash-based nonvolatile storage, I²C runtime reconfiguration, and industrial temperature operation in a single-PLL 6-output architecture-enabling both factory calibration and field-upgradable timing in space-constrained telecom and automation systems.

Availability

CY22150FZXCT is available at Aetrix Electronics and suitable for network router timing, industrial PLC clocking, telecom baseband unit synchronization, and test equipment synthesis requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY22150FZXCT 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, sensing, connectivity, and security solutions for automotive, industrial, and communications markets.

The CY22150FZXCT belongs to Infineon's legacy Cypress clock generation portfolio, designed specifically for flexible, field-programmable timing in cost-sensitive, high-volume networking and industrial control systems where reliability across temperature extremes is critical.

FAQ

What is the maximum output frequency achievable with CY22150FZXCT at 2.5 V?

The CY22150FZXCT supports up to 166.6 MHz on LCLK1–LCLK4 when VDDL is set to 2.5 V. CLK5 and CLK6 are fixed at 3.3 V and support up to 200 MHz. This limitation arises from output driver strength and signal integrity constraints at lower voltage rails, as specified in the AC Electrical Characteristics table (Rev. *R, p.15).

Can CY22150FZXCT operate without an external crystal?

Yes. The device accepts a driven clock input (1–133 MHz) on XIN, bypassing the internal crystal oscillator. In this mode, XOUT must be left floating, and the crystal drive settings (register 12H) must be configured per Table 4 (external reference drive settings) to ensure proper input buffer biasing and signal integrity.

How many times can the flash memory be reprogrammed?

The CY22150FZXCT's flash memory is rated for at least 100 program/erase cycles, as confirmed in the Features section (Rev. *R, p.1). Each cycle fully erases and rewrites all configuration registers, including PLL dividers, post-dividers, crosspoint routing, and oscillator settings. Field reprogramming requires the CY3672 Development Kit or compatible third-party programmers (e.g., BP Microsystems).

Is the I²C interface functional immediately after power-up?

No. Upon power-up, the CY22150FZXCT enters a default state where all outputs are three-stated and the PLL is inactive. The I²C interface becomes operational only after AVDD and VDD stabilize and the internal power-on reset completes (~100 µs). Valid I²C commands (e.g., register writes to 0x09, 0x44) must then be issued to enable outputs and configure the PLL-this volatile setup is lost on power-down.