Infineon Technologies CY91F469QAHPB-GS-UJE1

Overview

CY91F469QAHPB-GS-UJE1 from Infineon Technologies (formerly Cypress) is a 32-bit FR60 RISC microcontroller designed for real-time embedded control in automotive and industrial systems. It operates at up to 100 MHz core frequency (1.9 V), integrates 3 CAN channels (1 Mbps), 12 LIN-USART channels, dual 10-bit ADCs (32 + 8 channels), 205 GPIOs, and MPU support. Used in vehicle body control modules requiring deterministic timing and mixed-signal integration.

For engineers reviewing the CY91F469QAHPB-GS-UJE1 datasheet, CY91F469QAHPB-GS-UJE1 pinout, CY91F469QAHPB-GS-UJE1 application, or CY91F469QAHPB-GS-UJE1 equivalent, key selection criteria include CAN/LIN coexistence, 320-pin BGA package constraints, flash-protected boot ROM, real-time clock with sub-clock calibration, and hardware watchdog independence from main clock domain.

Technical Context

The CY91F469QAHPB-GS-UJE1 implements the FR60 CPU core with five-stage pipeline, Harvard architecture, and instruction-level multiplier (3-cycle 16-bit signed multiply). It supports simultaneous program/data access and features register interlock for efficient assembly coding.

Peripheral integration includes C-CAN controllers with 32 message buffers per channel, LIN-USART with sync-break detection and dedicated baud rate generator, and dual successive-approximation ADCs with 1 µs minimum conversion time. Clock supervision monitors both 4 MHz main and 32 kHz sub-oscillators with automatic CR oscillator fallback.

Key Specifications

Pinout & Package

Package: 320-pin plastic BGA (BYA320), 17 mm × 17 mm, 0.8 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TC375LP-32F200F AA and RH850/F1L, CY91F469QAHPB-GS-UJE1 uniquely balances LIN+CAN coexistence, sub-clock-calibrated RTC, and 205 GPIOs in a single BGA package-making it optimal for cost-sensitive body electronics where protocol integration reduces board area and component count.

Availability

CY91F469QAHPB-GS-UJE1 is available at Aetrix Electronics and suitable for automotive body control modules, electric power steering ECUs, and industrial PLC I/O bases requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY91F469QAHPB-GS-UJE1 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 German semiconductor manufacturer specializing in power management, automotive MCUs, and security solutions, with global manufacturing and R&D infrastructure.

This device belongs to the CY91460Q series-a line of FR60-based 32-bit microcontrollers engineered for deterministic real-time control in automotive body electronics and industrial automation where LIN/CAN coexistence and mixed-signal integration are critical.

FAQ

What is the maximum operating frequency of the CY91F469QAHPB-GS-UJE1 core?

The CY91F469QAHPB-GS-UJE1 achieves a maximum core frequency of 100 MHz when supplied with 1.9 V to the main regulator (REGSEL_FLASHSEL=1 and REGSEL_MAINSEL=1). At the default 1.8 V supply, the maximum is 88 MHz. Both modes maintain full peripheral functionality including CAN, LIN-USART, and ADC operation.

Does this MCU support hardware-based LIN physical layer communication?

No-CY91F469QAHPB-GS-UJE1 integrates LIN-USART protocol logic only. It requires external LIN transceivers (e.g., TLE7259-3GE or INFINEON TLE8251) for physical layer signaling. The LIN-USART module provides full duplex double-buffered operation, sync-break detection, and software-configurable baud rates.

How many independent CAN channels does the CY91F469QAHPB-GS-UJE1 support?

The device integrates three independent C-CAN controllers, each supporting up to 32 message buffers (transmit and receive combined). All three channels operate concurrently at up to 1 Mbps and share no buffer memory-enabling true multi-bus isolation for powertrain, chassis, and body domain networks.

Is the internal 1.8 V core regulator adjustable or fixed?

The internal step-down voltage regulator delivering 1.8 V to the FR60 core is fixed and non-adjustable. It derives from the external 3–5 V supply and is monitored by the supply supervisor circuit, which triggers reset if core voltage falls outside ±10% tolerance during brown-out conditions.