Infineon Technologies CY90F387PMT-GSE1

Overview

CY90F387PMT-GSE1 from Infineon Technologies (formerly Cypress Semiconductor) is a 16-bit F2MC-16LX microcontroller with integrated 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 instruction cycle), supports 8/10-bit A/D conversion across 8 channels, and features dual 16-bit reload timers, 4-channel input capture, and sub-clock (8.192 kHz) real-time operation - deployed in automotive body control modules requiring deterministic CAN messaging and analog sensor interfacing.

For engineers reviewing the CY90F387PMT-GSE1 datasheet, CY90F387PMT-GSE1 pinout, CY90F387PMT-GSE1 application, or CY90F387PMT-GSE1 equivalent, key selection criteria include its 16-bit CPU with 32-bit accumulator for long-word arithmetic, built-in PLL clock multiplication (1×–4×), low-power sleep/watch/stop modes, and full-duplex UART with selectable clock-synchronous/asynchronous transfer - all validated for industrial process controllers and embedded CAN nodes.

Technical Context

The CY90F387PMT-GSE1 implements the F2MC-16LX architecture with 23 addressing modes, enhanced C-language support via system stack pointer and barrel shift instructions, and real-time interrupt handling with 8 priority levels and 34 interrupt sources. Its CAN controller provides 8 message buffers and programmable bit timing for data rates from 10 kbps to 1 Mbps using a 16 MHz machine clock.

Peripheral integration includes an 8/10-bit A/D converter with 6.125 µs conversion time (at 16 MHz), 8/16-bit PPG timer supporting arbitrary-duty pulse generation, and a delay interrupt generator module optimized for RTOS task switching. Power management supports five standby modes - Sleep, Watch, Time-base timer, Stop, and CPU blocking - each with distinct clock domain activation.

Key Specifications

Pinout & Package

LQFP-48 package (pin pitch 0.50 mm), 7 × 7 mm body, exposed thermal pad, RoHS-compliant lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MB90F387S and MB90387, CY90F387PMT-GSE1 uniquely combines Flash programmability, sub-clock real-time operation, and 34 high-drive I/Os - making it optimal for development, prototyping, and applications demanding both flexibility and deterministic low-power behavior.

Availability

CY90F387PMT-GSE1 is available at Aetrix Electronics and suitable for automotive body control units, industrial CAN sensor nodes, smart appliance motor controllers, and medical diagnostic subsystems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for CY90F387PMT-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, inheriting its portfolio of high-reliability microcontrollers for automotive, industrial, and medical applications - emphasizing functional safety, long-term availability, and automotive-grade qualification.

CY90F387PMT-GSE1 belongs to the legacy MB90385 series, designed specifically for real-time process control in resource-constrained embedded systems requiring integrated CAN, analog sensing, and deterministic interrupt response - targeting automotive body electronics and industrial automation.

FAQ

What is the maximum CAN bit rate supported by CY90F387PMT-GSE1?

The CY90F387PMT-GSE1 supports CAN bit rates from 10 kbps to 1 Mbps when operating with a 16 MHz machine clock. Bit timing is fully programmable via the CAN controller's BTR register, allowing precise configuration for different bus lengths and noise environments. The 8-message buffer architecture enables concurrent transmission and reception without CPU intervention.

Does CY90F387PMT-GSE1 support in-system programming (ISP) of Flash memory?

Yes - CY90F387PMT-GSE1 supports in-system programming via its on-chip boot ROM and UART interface. Firmware updates can be performed without removing the device from the PCB, using standard serial commands and checksum verification. The Flash memory endurance is rated for 10,000 program/erase cycles with data retention exceeding 20 years at 85°C.

How many power-saving modes does CY90F387PMT-GSE1 provide, and what clocks remain active in Watch mode?

CY90F387PMT-GSE1 offers five low-power modes: Sleep, Watch, Time-base timer, Stop, and CPU blocking. In Watch mode, only the 8.192 kHz sub-clock and watch timer remain active - enabling accurate timekeeping and periodic wake-up interrupts while consuming <1 µA typical current. All other clocks, peripherals, and CPU are halted.

Can the 8/10-bit A/D converter perform sequential conversions across multiple channels without CPU intervention?

Yes - the A/D converter supports sequential conversion mode, where up to 8 selected channels are converted automatically in order, with results stored in dedicated data registers. Conversion is triggered by software, external pin (ADTG), or timer overflow, and completion generates an interrupt. This enables continuous sensor monitoring with minimal CPU overhead.