Infineon Technologies CY90F543GSPF-GS-BI24E1

Overview

CY90F543GSPF-GS-BI24E1 from Cypress Semiconductor is a 16-bit F2MC-16LX microcontroller with dual FULL-CAN 2.0A/B interfaces, 128 KB Flash ROM, 6 KB RAM, and QFP-100 package. It operates at 16 MHz system clock (62.5 ns min instruction time), supports 8/10-bit 8-channel ADC (26.3 µs conversion), and targets automotive body control modules requiring CAN-based distributed sensing and actuation.

For engineers reviewing the CY90F543GSPF-GS-BI24E1 datasheet, CY90F543GSPF-GS-BI24E1 pinout, CY90F543GSPF-GS-BI24E1 application, or CY90F543GSPF-GS-BI24E1 equivalent, key selection criteria include dual-CAN timing determinism, Flash reprogrammability in-circuit, 32-bit accumulator for motor control math, and 81 GPIOs with programmable I/O types across industrial temperature range (−40 °C to +105 °C).

Technical Context

The device implements the proprietary F2MC-16LX CPU core with 23 addressing modes, enhanced multiplication/division instructions, and 32-bit accumulator for extended precision arithmetic. Its dual CAN controllers support mixed mailbox/FIFO buffering, automatic retransmission, and up to 1 Mbps bit rate with full CAN 2.0A/B compliance.

Peripheral integration includes four 8/16-bit PPG timers, eight input capture channels, four output compare channels, two 16-bit reload timers, UART0/UART1 with synchronous/asynchronous modes (up to 2 Mbps), and an external bus interface supporting 16 MB address space - all synchronized to a PLL-derived 16 MHz system clock with selectable division ratios.

Key Specifications

Pinout & Package

Package: QFP-100 (PQH100), 0.65 mm pitch, lead-free, RoHS-compliant surface-mount package with exposed thermal pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F566TEADFP and SPC560P50L5, CY90F543GSPF-GS-BI24E1 uniquely balances dual classical CAN, external bus expansion, and Flash reprogrammability at 16-bit footprint - making it optimal for cost-sensitive, non-safety-critical automotive gateways and body controllers where legacy CAN infrastructure dominates.

Availability

CY90F543GSPF-GS-BI24E1 is available at Aetrix Electronics and suitable for automotive body control modules, industrial CAN gateways, electronic power steering units, and off-highway telematics systems requiring stable component supply across extended temperature and long product lifecycles.

Supply support for CY90F543GSPF-GS-BI24E1 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, emphasizing reliability, security, and integration.

This part belongs to the MB90540G/545G series - a family of 16-bit microcontrollers engineered specifically for automotive and industrial environments demanding dual CAN connectivity, Flash-based field-upgradability, and robust operation from −40 °C to +105 °C.

FAQ

What is the maximum CAN bit rate supported by CY90F543GSPF-GS-BI24E1?

The device supports up to 1 Mbps on each of its two FULL-CAN 2.0A/B interfaces. This maximum rate is achievable under specified electrical conditions (V_CC = 5.0 V, ambient ≤ 85 °C) with proper termination and bus length ≤ 40 m. Bit timing registers allow fine-tuning of synchronization segments, propagation time, and phase buffers to meet ISO 11898-1 requirements.

Does CY90F543GSPF-GS-BI24E1 support in-system programming of Flash memory?

Yes - it provides full embedded Flash algorithm support including Write, Erase, Erase-Suspend, and Erase-Resume commands. Programming is performed via on-chip firmware routines triggered by specific command sequences and protected by block-level voltage-controlled lock bits. No external programmer is required for field updates.

How many general-purpose I/O pins does CY90F543GSPF-GS-BI24E1 offer?

The device provides 81 programmable general-purpose I/O pins. Each pin can be individually configured as input, output, or peripheral function (e.g., UART, CAN, ADC, timer). All pins support schmitt-trigger inputs and push-pull outputs, with bit-wise direction control and read-modify-write capability for safe concurrent access.

Is an external crystal required for operation?

Yes - a 4 MHz crystal must be connected to X0A/X1A pins to generate the base clock for the on-chip PLL. The PLL multiplies this to produce the 16 MHz system clock. While the device supports a one-clock system variant (with external clock injection), the CY90F543GSPF-GS-BI24E1 variant requires the crystal for guaranteed operation across its full temperature and voltage range.