Infineon Technologies CY90F543GPF-GE1

Overview

CY90F543GPF-GE1 from Cypress Semiconductor is a 16-bit F2MC-16LX microcontroller with dual FULL-CAN interfaces (CAN 2.0A/B), 128 KB Flash ROM, 6 KB RAM, and QFP-100 package. It operates at up to 16 MHz system clock (62.5 ns min instruction time), supports 8/10-bit A/D conversion across 8 channels (26.3 µs per channel), and targets automotive body control modules requiring robust real-time communication and mixed-signal processing.

For engineers reviewing the CY90F543GPF-GE1 datasheet, CY90F543GPF-GE1 pinout, CY90F543GPF-GE1 application, or CY90F543GPF-GE1 equivalent, key selection criteria include dual-CAN timing compliance, Flash erase cycle endurance (10,000 cycles), 32-bit accumulator for precision math, and 81 general-purpose I/O ports with programmable edge-sensitive interrupts.

Technical Context

The CY90F543GPF-GE1 implements the F2MC-16LX CPU core with extended addressing modes (23 types), enhanced signed multiply/divide instructions, and barrel shift support-enabling efficient C-language compilation and multi-task scheduling. Its dual CAN controllers each support 16 message buffers with flexible mailbox/FIFO mixing and automatic retransmission on error.

Peripheral integration includes four 8/16-bit PPG timers, eight input capture and four output compare channels on the 16-bit I/O timer, two UARTs (UART0 with 500 Kbps–2 Mbps sync mode; UART1 with SCI), and an external bus interface supporting up to 16 MB address space-all synchronized to a configurable PLL-derived system clock (×1–×4 or ÷2).

Key Specifications

Pinout & Package

Package: QFP-100 (PQH100), 0.65 mm lead pitch, thermally enhanced plastic body. Pinout validated per Cypress Document 002-07696 Rev. *B (Pages 7–8).

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC2267M-104F100L and RL78/F13, CY90F543GPF-GE1 uniquely balances dual-CAN bandwidth, on-chip 8/10-bit A/D, and Flash endurance-making it optimal for mid-tier automotive ECUs needing mixed-signal processing without external peripherals.

Availability

CY90F543GPF-GE1 is available at Aetrix Electronics and suitable for automotive body control units, industrial CAN gateways, and off-highway telematics systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY90F543GPF-GE1 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 microcontrollers and programmable systems-on-chip for automotive, industrial, and consumer applications.

The MB90540G/545G series was developed specifically for automotive body electronics and industrial networking, emphasizing dual-CAN real-time communication, Flash-based field-upgradability, and extended temperature operation.

FAQ

Does CY90F543GPF-GE1 support CAN FD?

No. The device implements FULL-CAN compliant with ISO 11898-1:2003 (CAN 2.0A/B only), supporting up to 1 Mbps classical CAN frames. It does not include CAN FD arbitration or data phase enhancements, nor does its message buffer architecture support FD frame formatting or bit-rate switching.

What is the maximum operating frequency of the external bus interface?

The external bus interface supports up to 16 MHz operation when driven by the system clock (fsys). Address/data strobes (ALE, RD, WR, HRQ, HAK, RDY) are synchronized to fsys, enabling reliable 8/16-bit memory access within the 16 MB address space without additional wait states at this frequency.

How is Flash memory protected against accidental erasure?

Block protection is enforced by applying 12.5 V to the MD0–MD2 pins during programming. Each Flash block can be individually locked; erasure requires both correct voltage and execution of the embedded erase-suspend/resume command sequence, preventing unintended writes during power transients or software faults.

Can the 32 kHz sub-clock drive the RTC independently of main oscillation?

Yes. The 32 kHz sub-clock circuit operates from a separate crystal (X0/X1) or RC oscillator and remains active in Sleep, Stop, and Watch modes. It directly clocks the watchdog timer and enables wake-up interrupts without restarting the main PLL or CPU core-critical for battery-backed timekeeping in automotive modules.