Infineon Technologies SAF-XC878CM-16FFI 3V3 AA

Overview

SAF-XC878CM-16FFI 3V3 AA 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 (3.3 V I/O, 2.5 V core via embedded regulator), and targets automotive body control modules requiring CAN, LIN, and high-reliability ADC timing.

For engineers reviewing the SAF-XC878CM-16FFI 3V3 AA datasheet, SAF-XC878CM-16FFI 3V3 AA pinout, SAF-XC878CM-16FFI 3V3 AA application, or SAF-XC878CM-16FFI 3V3 AA equivalent, key selection criteria include MultiCAN interface support, 10-bit 8-channel ADC conversion timing (≤1.5 µs), CCU6 timer resolution for motor phase control, and JTAG-based on-chip debug capability in TQFP-64 package.

Technical Context

The SAF-XC878CM-16FFI 3V3 AA implements a two-clock-per-machine-cycle XC800 core derived from the 8051 architecture, enabling zero-wait-state memory access across its 52 KB Flash and 3 KB XRAM. Its clock generation unit supports external crystal (1–20 MHz), internal RC oscillator, and PLL-based frequency multiplication up to 26 MHz.

It integrates dedicated hardware peripherals including MultiCAN v2.0 controller (2 channels), LIN 2.1 compliant UART1, CCU6 capture/compare unit with three 16-bit timers and dead-time insertion, and a 10-bit SAR ADC with programmable sampling time and sequence control - all synchronized to a common system clock domain with configurable prescalers.

Key Specifications

Pinout & Package

SAF-XC878CM-16FFI 3V3 AA is housed in a 64-pin TQFP (Thin Quad Flat Package) with 0.5 mm pitch, thermally enhanced for automotive under-hood operation (JEDEC MS-026). The package includes exposed thermal pad (EPAD) connected to VSS for improved heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SAF-XC878CM-16FFI 3V3 AA, the XC886 offers extended Flash and CAN FD but lacks CORDIC acceleration, while the TC1766 provides 32-bit performance and safety features at significantly higher cost and power - making the XC878 optimal for cost-sensitive, LIN/CAN-based body electronics.

Availability

SAF-XC878CM-16FFI 3V3 AA is available at Aetrix Electronics and suitable for automotive body control modules, BLDC motor drives, HVAC controllers, and industrial sensor hubs requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 Grade 2 qualification.

Supply support for SAF-XC878CM-16FFI 3V3 AA 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 centers and wafer fabs in Dresden and Villach.

This device belongs to the XC87xCLM family - a line of AEC-Q100 qualified 8-bit microcontrollers designed specifically for cost-optimized automotive body electronics requiring CAN, LIN, and robust analog integration.

FAQ

Does SAF-XC878CM-16FFI 3V3 AA support CAN FD?

No. This device integrates MultiCAN v2.0 compliant with ISO 11898-1:2003, supporting Classical CAN only (up to 1 Mbps). CAN FD frame format, bit rate switching, and extended data length are not implemented in the XC878's CAN controller hardware or firmware stack.

What is the maximum ADC sampling rate achievable?

The 10-bit ADC achieves up to 500 kSPS under optimal conditions: 12 MHz system clock, minimum conversion time of 1.5 µs per sample, and sequential channel scanning without inter-sample delay. Actual throughput depends on software overhead and interrupt latency.

Can the embedded voltage regulator be bypassed for external core supply?

No. The internal 2.5 V regulator is fixed and non-bypassable; VDDCORE pin is not accessible externally. The device requires only a single 3.3 V supply applied to VDDIO, with internal regulation ensuring stable core voltage across temperature and load variations.

Is JTAG debug supported in all power modes?

JTAG remains functional in Idle and Power-down modes but is disabled in Stop mode. Wake-up events (e.g., CAN message, LIN header, or external interrupt) restore clock and re-enable debug access without reset - enabling low-power monitoring with debug retention.