Infineon Technologies SAX-XC878-13FFA 5V AC

Overview

SAX-XC878-13FFA 5V AC from Infineon Technologies is an 8-bit single-chip microcontroller based on the XC800 core, compatible with the standard 8051 instruction set and executing instructions at two clocks per machine cycle. It integrates 52 KB Flash, 3 KB XRAM, 256 B RAM, and 8 KB Boot ROM, with dual-voltage operation (5 V I/O, 2.5 V core via embedded regulator). It features a 10-bit 8-channel ADC, MultiCAN interface, CCU6 capture/compare unit, and LIN support - deployed in automotive body control modules requiring deterministic real-time response.

For engineers reviewing the SAX-XC878-13FFA 5V AC datasheet, SAX-XC878-13FFA 5V AC pinout, SAX-XC878-13FFA 5V AC application, or SAX-XC878-13FFA 5V AC equivalent, key selection considerations include its 52 KB protected Flash memory layout, 5 V-tolerant port supply with internal 2.5 V core regulation, MultiCAN v2.0B compliance, CCU6-based motor timing resolution, and JTAG-based on-chip debug support for production firmware validation.

Technical Context

The XC878 implements a two-clock-per-machine-cycle 8051-compatible CPU core with dual data pointers and hardware multiplication/division (MDU) plus CORDIC coprocessor for trigonometric computation acceleration. Its memory architecture separates 52 KB Flash (with bank pagination and password-protected write/erase) from 3 KB XRAM and 256 B on-chip RAM, enabling efficient code/data partitioning in resource-constrained automotive nodes.

Peripheral integration includes a full MultiCAN controller supporting up to 64 message objects and CAN FD-ready timing, a 16-bit CCU6 unit with three independent capture/compare channels for precise PWM generation, and a 10-bit ADC with configurable conversion sequence and hardware trigger linkage to timer events - all synchronized under a flexible clock generation unit with PLL and multiple prescaler options.

Key Specifications

Pinout & Package

Package: TQFP-64 (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SAX-XC878-13FFA 5V AC, the TC1766 and TC1782 offer higher compute throughput and functional safety support but require new PCB layout, compiler toolchain, and qualification effort - making the XC878 optimal for cost-sensitive, non-safety-critical body electronics where 8-bit determinism and proven field reliability are prioritized.

Availability

SAX-XC878-13FFA 5V AC is available at Aetrix Electronics and suitable for automotive body control modules, electric power steering subsystems, and HVAC blower controllers requiring stable component supply across extended product lifecycles.

Supply support for SAX-XC878-13FFA 5V AC 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 electronics, and security solutions, headquartered in Munich.

The XC87x family was developed specifically for cost-optimized, real-time automotive body electronics applications requiring robust 8-bit control, integrated analog peripherals, and long-term supply assurance - targeting replacement of legacy 8051 derivatives in LIN/CAN nodes.

FAQ

Does SAX-XC878-13FFA 5V AC support CAN FD?

No, it implements MultiCAN v2.0B compliant with ISO 11898-1:2003, supporting classical CAN up to 1 Mbps. CAN FD requires separate TriCore-based devices like the TC3xx series. The XC878's CAN controller lacks FD frame format handling, bit-rate switching, and extended data length support.

What is the maximum operating frequency and how is it achieved?

The SAX-XC878-13FFA 5V AC achieves a maximum system clock of 26 MHz using its internal PLL, which multiplies a 1–20 MHz external crystal input. The core executes instructions at two clocks per machine cycle, yielding up to 13 million instructions per second (MIPS) - confirmed in Section 4.3.3 of the datasheet.

Is the 52 KB Flash organized as a single block or segmented?

The Flash is segmented into banks with independent protection: 48 KB main array + 4 KB boot sector. Each bank supports individual lock bits and password-controlled erase/write - documented in Section 3.3.1 (Flash Bank Pagination) and Section 3.2.1.1 (Flash Memory Protection) of the datasheet.

Can Port 1 pins be used simultaneously for ADC input and CCU6 output?

No - Port 1 pins have mutually exclusive alternate functions. For example, P1.0 serves as either ADC0 or CCU6OUT0A, but not both concurrently. Pin function selection is controlled by the PORT1_PASEL register (Section 3.2.4.6), and hardware arbitration prevents simultaneous activation of conflicting modes.