Infineon Technologies CY9BF404RAMPMC-G-UNE2

Overview

CY9BF404RAMPMC-G-UNE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with 512 KB on-chip Flash, 64 KB SRAM (32 KB SRAM0 + 32 KB SRAM1), dual CAN 2.0A/B interfaces (1 Mbps), and integrated motor control peripherals including 8-channel Base Timers, QPRC, and Multi-function Timers. It operates at up to 80 MHz and supports 2.7–5.5 V supply for industrial motor drives and embedded control.

For engineers reviewing the CY9BF404RAMPMC-G-UNE2 datasheet, CY9BF404RAMPMC-G-UNE2 pinout, CY9BF404RAMPMC-G-UNE2 application, or CY9BF404RAMPMC-G-UNE2 equivalent, key selection considerations include its dual-CAN capability, 16-channel 12-bit ADC with 1.0 μs conversion time, hardware CRC accelerator (CRC16/32), SWJ-DP debug interface, and support for SLEEP/TIMER/STOP low-power modes in resource-constrained real-time systems.

Technical Context

The CY9BF404RAMPMC-G-UNE2 implements an Arm Cortex-M3 r2p0 core with Memory Protection Unit (MPU) and NVIC supporting 48 peripheral interrupts across 16 priority levels. It integrates dual independent SRAM banks (SRAM0 on I/D-code buses, SRAM1 on system bus) enabling deterministic code/data separation for real-time task isolation.

Its peripheral set is optimized for motion control: two QPRC units for encoder position tracking, eight Base Timers configurable as PWM/PPG/reload timers, and Multi-function Timers with A/D activation compare and DTIF (motor emergency stop) interrupt - all synchronized via shared clock domains and DMA channels.

Key Specifications

Pinout & Package

The CY9BF404RAMPMC-G-UNE2 is housed in a 120-pin LQFP package (14 mm × 14 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are fully defined in Cypress document 002-05610 Rev. *F, Sections 3 (Pin Assignment) and 4 (List of Pin Functions).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit Arm Cortex-M3 microcontroller applications.

Compared with STM32F103VCT6 and RA4M1, the CY9BF404RAMPMC-G-UNE2 uniquely integrates QPRC, dual CAN, and MTIOA/B pins in a single die - reducing external component count and interrupt latency for motion-critical applications requiring sub-microsecond fault response.

Availability

CY9BF404RAMPMC-G-UNE2 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body controllers, smart energy meters, and PLC I/O modules requiring stable component supply and long-term lifecycle support.

Supply support for CY9BF404RAMPMC-G-UNE2 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 is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive ICs, and embedded security solutions.

This device belongs to the FM3 family of 32-bit microcontrollers designed specifically for high-performance, cost-sensitive embedded control - emphasizing motor drive, industrial automation, and automotive body electronics with integrated analog and timing peripherals.

FAQ

What is the maximum operating frequency and supported voltage range?

The CY9BF404RAMPMC-G-UNE2 operates at up to 80 MHz with a supply voltage range of 2.7 V to 5.5 V. Its DC characteristics are validated across this full range per Section 12.2 of the datasheet, enabling direct interfacing with 3.3 V and 5 V logic families without level shifters.

Does it support hardware-based CRC calculation, and which polynomials are implemented?

Yes, it includes a dedicated CRC accelerator supporting CCITT CRC16 (polynomial 0x1021) and IEEE-802.3 CRC32 (polynomial 0x04C11DB7). These are executed in one clock cycle per byte, enabling real-time checksum validation for firmware updates and CAN message payloads.

How many CAN interfaces does it have, and what is their compliance level?

The device integrates two fully independent CAN 2.0A/B-compliant controllers, each supporting bit rates up to 1 Mbps and featuring 32 message buffers. Both channels meet ISO 11898-1 physical layer timing requirements when paired with standard CAN transceivers.

What low-power modes are available, and which peripherals remain active in STOP mode?

It supports SLEEP, TIMER, and STOP modes. In STOP mode, only the sub-clock (32.768 kHz) and Watch Counter remain active; all other clocks and peripherals are halted. Wake-up is possible via external interrupt, RTC alarm, or LVD event - with typical exit time under 10 μs.