Infineon Technologies C505CA4EMCAFXUMA1

Overview

C505CA4EMCAFXUMA1 from Infineon Technologies is an 8-bit single-chip microcontroller with full CAN 2.0B controller, 32 KB on-chip OTP program memory, 1 KB on-chip XRAM, 10-bit ADC (8 channels), and 32 + 2 digital I/O lines in a P-MQFP-44 package. It operates up to 20 MHz (300 ns instruction cycle) and targets automotive body control modules requiring integrated CAN communication and analog sensing.

For engineers reviewing the C505CA4EMCAFXUMA1 datasheet, C505CA4EMCAFXUMA1 pinout, C505CA4EMCAFXUMA1 application, or C505CA4EMCAFXUMA1 equivalent, key selection criteria include CAN compliance (2.0B), OTP memory configuration, 10-bit ADC resolution, power-down wake-up via P3.2/INT0 or P4.1/RXDC, and temperature range (-40°C to 125°C).

Technical Context

This microcontroller implements an enhanced 8051 architecture with eight datapointers and three 16-bit timers-including Timer 2 with four capture/compare channels. Its Full-CAN module supports 1 MBaud baudrate at ≥8 MHz system clock and includes internal prescaling for CAN clock when input frequency exceeds 10 MHz.

The device integrates on-chip emulation support (Enhanced Hooks Technology™), programmable 15-bit watchdog timer, oscillator watchdog, and multiple low-power modes: slow-down, idle (combinable with slow-down), and software power-down with wake-up capability via dedicated pins.

Key Specifications

Pinout & Package

P-MQFP-44 (Plastic Metric Quad Flat Package, 44-pin, 10 mm × 10 mm, 0.8 mm pitch) with exposed thermal pad; RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit CAN microcontroller applications.

Compared with SAK-C505CA-4R, C505CA4EMCAFXUMA1 offers field-programmable firmware updates; versus SAK-C505CA-4E, it shares identical silicon but differs only in packaging format-making FXUMA1 optimal for prototyping and low-volume production.

Availability

C505CA4EMCAFXUMA1 is available at Aetrix Electronics and suitable for automotive body control modules, industrial CAN gateways, and off-highway telematics nodes requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for C505CA4EMCAFXUMA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global R&D and manufacturing infrastructure.

The C500 family-including C505CA-was designed specifically for cost-sensitive, high-reliability automotive applications requiring integrated CAN, analog sensing, and robust real-time control in harsh environments.

FAQ

What is the maximum CAN baud rate supported by C505CA4EMCAFXUMA1?

The device supports up to 1 MBaud CAN communication when operating at ≥8 MHz system clock frequency. An internal CAN clock prescaler adjusts timing automatically when the input clock exceeds 10 MHz, ensuring accurate bit timing across the full operating range.

Does C505CA4EMCAFXUMA1 require an external crystal oscillator?

No-it supports both external crystals (1–20 MHz) and ceramic resonators via XTAL1/XTAL2 pins, but also allows RC oscillator configuration for cost-sensitive applications where timing precision is secondary to BOM reduction.

How is the 10-bit ADC calibrated and referenced?

The ADC uses an internal reference derived from VDD unless VAREF is externally driven; no factory calibration data is stored on-chip, but offset/gain correction can be implemented in firmware using known reference voltages applied to VAREF or analog inputs.

Can C505CA4EMCAFXUMA1 operate in power-down mode while monitoring CAN traffic?

Yes-software power-down mode retains CAN module functionality and allows wake-up via P4.1/RXDC (CAN receive data change), enabling ultra-low-power bus listening without CPU intervention or external wake-up circuitry.