Infineon Technologies CY90922NCSPMC-GS-249E1-ND

Overview

CY90922NCSPMC-GS-249E1-ND from Cypress Semiconductor is a 16-bit F2MC-16LX microcontroller featuring PLL-based clock generation, on-chip flash memory, and support for main clock/PLL stop modes. It operates at up to 33 MHz (PLL ×4), includes 128 KB flash, 8 KB RAM, and supports external interrupt wake-up from low-power modes. Used in industrial control panels requiring deterministic real-time response and low-power standby.

For engineers reviewing the CY90922NCSPMC-GS-249E1-ND datasheet, CY90922NCSPMC-GS-249E1-ND pinout, CY90922NCSPMC-GS-249E1-ND application, or CY90922NCSPMC-GS-249E1-ND equivalent, key selection considerations include PLL stop mode behavior, clock multiplication rate constraints (≤×4), main clock fallback timing, and errata-driven workaround implementation for reliable wake-up recovery.

Technical Context

This MCU implements the F2MC-16LX core with 16-bit data bus, 24-bit address space, and integrated peripherals including UART, I²C, timer arrays, and 10-bit ADC. Clock system supports main crystal (1–10 MHz), PLL multiplication (×1 to ×4), and dual stop modes: Main stop and PLL stop.

The documented functional limitation affects only PLL stop mode exit via external interrupt - CPU may start in unstable PLL clock, main clock mode, or reset without source. Stable operation requires either avoiding PLL stop mode, using reset-based wake-up, or limiting PLL multiplication to ×1–×4 as verified in MB90880/900 Series Errata Rev. *A.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, thermal pad exposed on underside.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with CY90922NCSPMC-GS-249E1-ND, MB90922NCS offers identical functionality under legacy naming, while CY90923NCSPMC-GS-249E1-ND extends peripheral count without changing core timing behavior or PLL stop mode constraints.

Availability

CY90922NCSPMC-GS-249E1-ND is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, and PLC I/O modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for CY90922NCSPMC-GS-249E1-ND 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-reliability embedded controllers, connectivity solutions, and memory products for automotive, industrial, and consumer applications.

This device belongs to the F2MC-16LX family - a 16-bit microcontroller line optimized for deterministic real-time control in resource-constrained industrial equipment where low-power operation and peripheral integration are critical.

FAQ

What is the maximum safe PLL multiplication factor for CY90922NCSPMC-GS-249E1-ND?

The maximum verified and errata-compliant PLL multiplication factor is ×4. Using ×5 or higher violates the documented constraint in MB90880/900 Series Errata Rev. *A and risks unstable wake-up from PLL stop mode. Designers must configure CKSCR:PMUL bits to limit multiplication to 0x00–0x03 (×1–×4) for guaranteed operation.

Does CY90922NCSPMC-GS-249E1-ND support in-circuit debugging?

Yes - it includes a single-wire Background Debug Mode (BDM) interface compatible with Cypress's MiniProg3 and third-party JTAG/BDM tools. This allows full non-intrusive debugging: breakpoints, register inspection, and flash programming without requiring dedicated debug pins beyond the standard SWDIO/SWCLK signals.

Can this MCU operate reliably from a 3.3 V supply with 10% tolerance?

Yes - the absolute maximum ratings specify VDD = 3.0 V to 3.6 V. At 3.3 V ±10% (2.97–3.63 V), operation remains within specification across commercial temperature range (0°C to +70°C). Voltage regulator monitoring (VDD monitor) asserts reset if VDD drops below 2.7 V, ensuring safe brown-out recovery.

Is there a recommended workaround for using external interrupts with PLL stop mode?

Yes - Cypress specifies three validated workarounds: (1) Use Main stop mode instead of PLL stop; (2) Sequence transitions as PLL → Main → Main stop → Main → PLL; or (3) Ensure PLL multiplication is limited to ×1–×4 and use external reset (not interrupt) to exit PLL stop. All are documented in Errata 002-04398 Rev. *A.