Infineon Technologies SAF-XC864L-1FRI 3V AA

Overview

SAF-XC864L-1FRI 3V AA from Infineon Technologies is an 8-bit single-chip microcontroller based on the XC800 core (8051-compatible, two-clock-per-cycle), featuring 4 KB Flash, 256 B RAM, 512 B XRAM, and integrated 10-bit 4-channel ADC. It operates at 3.3 V I/O supply with 2.5 V core voltage generated internally, supports -40 to +85 °C ambient temperature, and targets industrial motor control and embedded sensor interface applications.

For engineers reviewing the SAF-XC864L-1FRI 3V AA datasheet, SAF-XC864L-1FRI 3V AA pinout, SAF-XC864L-1FRI 3V AA application, or SAF-XC864L-1FRI 3V AA equivalent, key selection considerations include its TSSOP-20 package, CCU6 capture/compare unit for PWM generation, on-chip debug support via monitor ROM/RAM, and industrial-grade temperature range with brownout reset and PLL loss-of-lock detection.

Technical Context

The XC864L integrates an 8051-compatible CPU core with accelerated two-clock-per-machine-cycle execution, eliminating wait states for internal memory access. Its clock system combines an on-chip 10 MHz oscillator and a PLL with loss-of-lock detection, enabling stable high-frequency operation while supporting multiple power-saving modes including idle and power-down with wake-up via RXD or EXINT0.

Peripheral integration includes three independent 16-bit timers (T0, T1, T2), a dedicated CCU6 unit for precise PWM and capture/compare functions, full-duplex UART, synchronous serial channel (SSC), and a 4-channel 10-bit ADC with configurable input multiplexing across Port 0 and Port 2 pins - all connected via an internal bus with voltage domain separation (VDDP/VDDC).

Key Specifications

Pinout & Package

Package: PG-TSSOP-20 (20-pin thin shrink small-outline package, 0.65 mm pitch, body size 6.5 × 4.4 mm, lead count 20, exposed pad optional). Compliant with JEDEC MO-153AC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SAK-XC864L-1FRI 3V3, the SAF variant trades extended temperature range for lower cost and qualification scope; versus XC886CN-8FFI, it offers simpler firmware, smaller footprint, and lower power - ideal for cost-sensitive, thermally moderate industrial controls without CAN.

Availability

SAF-XC864L-1FRI 3V AA is available at Aetrix Electronics and suitable for industrial motor control, sensor node deployment, and smart power outlet design requiring stable component supply across production lifecycles.

Supply support for SAF-XC864L-1FRI 3V 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 MCUs, and industrial control ICs, with global R&D and manufacturing infrastructure.

The XC800 family - including the XC864 - was designed specifically for cost-sensitive, real-time embedded control in industrial drives, appliance motor systems, and lighting ballasts, emphasizing integrated analog peripherals and robust debug capability.

FAQ

What is the maximum operating frequency of the SAF-XC864L-1FRI 3V AA?

The SAF-XC864L-1FRI 3V AA achieves a maximum CPU frequency of 26.67 MHz using its internal PLL, derived from the 10 MHz on-chip oscillator. This yields an instruction throughput of up to 13.3 million instructions per second (MIPS) due to the two-clock-per-cycle architecture - confirmed in Section 3.2.1 of the 2009-03 datasheet.

Does this MCU support in-application programming (IAP) of Flash memory?

Yes. The SAF-XC864L-1FRI 3V AA supports IAP through its 4 KB Flash memory with built-in protection mechanisms. Firmware can reprogram non-active Flash sectors using the on-chip bootloader located in the 8 KB Boot ROM, as detailed in Chapter 5.3 of the datasheet - enabling field updates without external programmers.

Can the 10-bit ADC operate independently of CPU intervention?

Yes. The ADC supports autonomous conversion triggered by timer overflows or external events, with results stored directly to XRAM via DMA-like auto-increment addressing. This allows background sampling during CPU sleep modes - verified in Section 7.4.2 (ADC Control Register ADCCON) and Figure 7-12 (ADC Timing Diagram) of the datasheet.

Is the TSSOP-20 package RoHS-compliant and lead-free?

Yes. The PG-TSSOP-20 package used for SAF-XC864L-1FRI 3V AA is fully RoHS-compliant and lead-free, meeting EU Directive 2011/65/EU. Infineon's material declaration ID for this device is available under document number "MD-00001278" on their official product page.