Infineon Technologies CY90F387SPMCR-GSE1

Overview

CY90F387SPMCR-GSE1 from Infineon (formerly Cypress) is a 16-bit F2MC-16LX microcontroller with integrated full-CAN 2.0A/B controller, 64 KB Flash ROM, 2 KB RAM, and 34 general-purpose I/O ports including four high-current outputs. It operates at up to 16 MHz (62.5 ns min instruction time), supports 8/10-bit A/D conversion across 8 channels (6.125 µs conversion time), and features low-power modes including Sleep, Watch, and Stop. Used in real-time automotive body control modules requiring CAN communication and deterministic timing.

For engineers reviewing the CY90F387SPMCR-GSE1 datasheet, CY90F387SPMCR-GSE1 pinout, CY90F387SPMCR-GSE1 application, or CY90F387SPMCR-GSE1 equivalent, key selection criteria include its 16-bit CPU with 32-bit accumulator, built-in PLL clock multiplier (1×–4×), 8-message-buffer CAN controller (10 kbps–1 Mbps), and LQFP-48 package with AVCC/AVR analog power separation for noise-sensitive A/D operation.

Technical Context

This MCU implements the F2MC-16LX architecture with 24-bit internal addressing, 351 instructions, and dual-length (8-/16-bit) instruction encoding. Its interrupt system supports 8 priority levels and 34 sources, including CAN wakeup, DTP, and ICU edge-triggered input capture on four channels.

The peripheral set includes an 8/16-bit PPG timer (configurable as four 8-bit or two 16-bit channels), 16-bit reload and input-output timers, time-base/watchdog/watch timers, UART (SCI) with full-duplex double buffer, and a dedicated delay interrupt generator for RTOS task switching - all synchronized to a common 16 MHz machine clock derived from internal PLL.

Key Specifications

Pinout & Package

LQFP-48 package with exposed thermal pad (not electrically connected), 0.5 mm pitch, 7 mm × 7 mm body. Power domains separated: AVCC/AVR/AVSS for analog subsystem; VCC/VSS for digital core; X1/X0 for 4 MHz crystal; MD0–MD2 for boot mode configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MB90F387S, CY90F387SPMCR-GSE1 offers identical functionality at lower I/O count and same footprint; versus XC2267M, it delivers sufficient determinism for non-safety body electronics at lower cost, smaller size, and simpler toolchain integration.

Availability

CY90F387SPMCR-GSE1 is available at Aetrix Electronics and suitable for automotive body control units, industrial CAN sensor nodes, smart appliance motor controllers, and portable medical diagnostic interfaces requiring stable component supply, long-term lifecycle support, and automotive-grade qualification.

Supply support for CY90F387SPMCR-GSE1 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 acquired Cypress Semiconductor in 2020, integrating its microcontroller portfolio into Infineon's broader automotive and industrial IC offerings. Cypress was known for robust embedded solutions targeting real-time control and connectivity.

CY90F387SPMCR-GSE1 belongs to the legacy MB90385 series - a family of 16-bit F2MC-16LX MCUs designed specifically for cost-sensitive, high-reliability automotive body electronics and industrial automation where CAN integration, low-power operation, and deterministic interrupt latency are critical.

FAQ

Does CY90F387SPMCR-GSE1 require an external CAN transceiver?

Yes. The device contains only the CAN protocol controller (MAC layer); physical layer signaling requires an external ISO 11898-compliant transceiver such as the TJA1042 or SN65HVD230. Pins CANTX/CANRX are not exposed - CAN signals are handled internally and routed to dedicated I/O pins only in later derivatives.

What is the maximum achievable CAN bit rate with CY90F387SPMCR-GSE1?

The CAN controller supports bit rates from 10 kbps to 1 Mbps when operating with a 16 MHz machine clock. Achieving 1 Mbps requires precise oscillator tolerance (±0.5%), proper termination, and short stub lengths (<0.3 m) - verified in application note AN91172 for MB90385-series CAN timing setup.

Can the 8/10-bit A/D converter perform simultaneous sampling across multiple channels?

No. The A/D converter uses a single successive-approximation register (SAR) core and performs conversions sequentially. However, it supports automatic scanning of up to 8 channels in sequential mode with programmable inter-channel delay, enabling pseudo-simultaneous acquisition for multi-sensor systems like motor phase current sensing.

Is the Flash memory in CY90F387SPMCR-GSE1 field-programmable?

Yes. The 64 KB on-chip Flash supports in-system programming (ISP) via the on-chip bootloader using UART (SCI). Programming requires a 5 V VCC supply and adherence to Infineon's Flash programming algorithm - documented in the MB90385 Series Flash Memory Programming Manual (002-07766).