Infineon Technologies C505CA4EMCAKXUMA1

Overview

C505CA4EMCAKXUMA1 from Infineon Technologies is an 8-bit single-chip microcontroller based on the enhanced 8051 architecture, featuring a full CAN 2.0B controller, 32 KB on-chip OTP program memory, 1 KB on-chip XRAM, and a 10-bit ADC with up to 8 analog inputs. It operates at up to 20 MHz (300 ns instruction cycle), supports four priority-level interrupts, and targets automotive and industrial embedded control where robust serial networking and mixed-signal integration are required.

For engineers reviewing the C505CA4EMCAKXUMA1 datasheet, C505CA4EMCAKXUMA1 pinout, C505CA4EMCAKXUMA1 application, or C505CA4EMCAKXUMA1 equivalent, key selection criteria include CAN 2.0B compliance, OTP programmability, 10-bit ADC resolution, P-MQFP-44 package compatibility, and support for software power-down with wake-up via P3.2/INT0 or P4.1/RXDC.

Technical Context

The C505CA4EMCAKXUMA1 integrates a full-CAN controller compliant with ISO 11898-1:2003 (CAN 2.0B), with 256 bytes of dedicated CAN register/data space mapped into external data memory and configurable baud rates up to 1 Mbaud at ≥8 MHz system clock. Its CAN clock prescaler enables stable operation when input frequency exceeds 10 MHz.

It implements an enhanced 8051 core with eight datapointers, three 16-bit timers (including Timer 2 with four-channel capture/compare), and on-chip emulation support using Infineon's Enhanced Hooks Technology™. The 10-bit successive-approximation ADC supports up to eight channels with programmable sampling timing and conversion trigger sources.

Key Specifications

Pinout & Package

Package: P-MQFP-44 (Plastic Metric Quad Flat Package, 44-pin, 10 mm × 10 mm, 0.8 mm pitch). Pinout validated per Infineon C505CA datasheet Figure 2 and ordering code suffix "KXUMA1" indicating SAH temperature grade (–40°C to +110°C) and tape-and-reel delivery.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SAF-C505CA-4R, C505CA4EMCAKXUMA1 offers field-programmable OTP for iterative development, while TLE9842-2QX trades CAN hardware offload for ARM flexibility and LIN integration-neither matches its combination of 8051 familiarity, full CAN silicon, and OTP convenience.

Availability

C505CA4EMCAKXUMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, industrial gateways, and off-road telematics nodes requiring stable component supply across extended temperature ranges (–40°C to +110°C) and long product lifecycles.

Supply support for C505CA4EMCAKXUMA1 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 microcontrollers, with global R&D and manufacturing infrastructure.

The C500 family-including the C505CA-was designed specifically for automotive and industrial embedded control applications demanding CAN 2.0B connectivity, mixed-signal integration, and long-term supply stability in harsh environments.

FAQ

What is the maximum CAN baud rate supported by C505CA4EMCAKXUMA1?

The device supports up to 1 Mbaud CAN communication when operating at ≥8 MHz system clock frequency. At 20 MHz, the internal CAN clock prescaler ensures stable bit timing alignment per ISO 11898-1, enabling reliable high-speed messaging in automotive networks without external timing components.

Does C505CA4EMCAKXUMA1 require an external CAN transceiver?

Yes. The C505CA4EMCAKXUMA1 contains only the CAN protocol controller (digital layer); an external physical-layer transceiver (e.g., TJA1040, SN65HVD230) is required to drive the differential CAN_H/CAN_L bus lines and provide ESD protection and common-mode rejection.

Can the on-chip OTP memory be erased and reprogrammed multiple times?

No. The 32 KB on-chip OTP (One-Time Programmable) memory can be programmed only once. Programming is performed during final test using standard EPROM programmers compatible with Infineon's C505CA OTP specification; subsequent erasure or reprogramming is physically impossible.

What temperature grade does the 'SAH' suffix in C505CA4EMCAKXUMA1 indicate?

The 'SAH' prefix denotes the extended industrial temperature range of –40°C to +110°C, validated per Infineon's qualification standards for automotive under-hood applications. This rating applies to the full functional operation of the CAN controller, ADC, timers, and I/O ports within that range.