Infineon Technologies CY22150KFCT

Overview

CY22150KFCT from Cypress Semiconductor is a flash-programmable, single-PLL clock generator delivering six configurable CMOS clock outputs (LCLK1–LCLK4, CLK5, CLK6) with frequency synthesis up to 200 MHz from an 8–30 MHz crystal or 1–133 MHz driven reference. It supports dual-voltage operation (3.3V core/analog, 2.5V/3.3V LCLK outputs), features low-jitter PLL architecture, and enables in-system serial reprogramming via two-wire interface. Used in industrial networking and telecom timing subsystems requiring field-upgradable clock trees.

For engineers reviewing the CY22150KFCT datasheet, CY22150KFCT pinout, CY22150KFCT application, or CY22150KFCT equivalent, this page provides verified pin functions, real-world output configuration options, temperature-rated performance boundaries (industrial grade), register-mapped post-divider flexibility (/2, /3, /4, /DIV1N, /DIV2N), and validated alternatives for multi-output programmable clock generation.

Technical Context

The CY22150KFCT implements a single-loop PLL with programmable P and Q counters (P_total = 8–2055, Q_total = 2–129) to synthesize VCO frequencies between 100 MHz and 400 MHz. Its reference input accepts either crystal (8–30 MHz) or external clock (1–133 MHz), with programmable oscillator gain and load capacitance (register 12H/13H) for crystal matching.

Six outputs are routed through a crosspoint switch matrix to two independent divider banks, supporting seven per-output options: direct REF bypass, or division by /2 (×2), /3, /4, /DIV1N (4–127), /DIV2N (4–127). Serial programming uses fixed I²C-compatible address 0x69 (7-bit) with volatile SPI-style register writes.

Key Specifications

Pinout & Package

16-pin TSSOP (4.4 mm × 5.0 mm, 0.65 mm pitch) with exposed thermal pad (not electrically connected). Pinout optimized for clock distribution: dedicated analog/digital grounds (AVSS, VSS, VSSL), separate LCLK voltage supply (VDDL), and isolated serial interface (SDAT, SCLK).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable clock generator applications.

Compared with Si5338A-B-GM and ICS843002AGI-01LFT, the CY22150KFCT uniquely combines flash-based nonvolatile programmability, industrial temperature support, and six flexible CMOS outputs in a single 16-pin TSSOP - making it optimal for field-upgradable embedded systems where configuration persistence and board space are critical.

Availability

CY22150KFCT is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, and medical imaging systems requiring stable component supply, long-term lifecycle assurance, and field-reprogrammable timing solutions.

Supply support for CY22150KFCT 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 logic and timing solutions for industrial, automotive, and communications markets.

The CY22150 belongs to Cypress's Flash-Programmable Clock Generator product line, engineered to replace multiple fixed-frequency oscillators with a single configurable device for cost-sensitive, upgradeable timing architectures.

FAQ

What is the maximum guaranteed output frequency for CY22150KFCT at 2.5V VDDL?

The maximum guaranteed output frequency is 166.6 MHz when VDDL is set to 2.5V, as specified in the commercial/industrial grade datasheet (Document #38-07104 Rev. *I, page 1). This limit arises from CMOS output driver slew rate constraints at reduced voltage, not PLL capability - the internal VCO supports up to 400 MHz.

Can CY22150KFCT generate non-integer-related output frequencies from a single reference?

Yes. Using independent DIV1N and DIV2N post-dividers (4–127 range) fed by the same VCO, it can produce two unrelated frequencies - for example, 125 MHz (/DIV1N = 16) and 156.25 MHz (/DIV2N = 12.8, achieved via P/Q tuning) - enabling mixed-clock-domain systems without external synthesizers.

Is XOUT pin required when using an external clock on XIN?

No. When XIN is driven by an external clock source (1–133 MHz), the XOUT pin must be left floating per datasheet Note 1 (page 3). Connecting XOUT in driven-clock mode risks signal reflection, impedance mismatch, and potential damage to the internal oscillator circuitry.

How many times can the flash memory of CY22150KFCT be reprogrammed?

The flash memory is rated for up to 100 program/erase cycles, as stated in the Features section (page 1). Each cycle fully erases and rewrites all configuration registers, including P/Q counters, post-dividers, crosspoint routing, and oscillator settings - sufficient for prototyping and field firmware updates.