Infineon Technologies SAF-C505L-4EMCC

Overview

SAF-C505L-4EMCC from Infineon Technologies is an 8-bit CMOS microcontroller compatible with the 8051 architecture, featuring 32 KB on-chip OTP memory, 256-byte RAM, 256-byte XRAM, and integrated 128-segment LCD controller with 20 dedicated output lines. It operates up to 20 MHz (300 ns instruction cycle), includes a 10-bit ADC with 8 inputs, and supports real-time clock functionality with 32.768 kHz crystal input - deployed in industrial panel meters and embedded HMI systems.

For engineers reviewing the SAF-C505L-4EMCC datasheet, SAF-C505L-4EMCC pinout, SAF-C505L-4EMCC application, or SAF-C505L-4EMCC equivalent, key selection criteria include OTP program memory size, LCD drive capability (1/4 duty, 4×32 segments), RTC operation in power-down mode, and mixed analog/digital I/O on Port 1 with interrupt support across 12 sources.

Technical Context

The SAF-C505L-4EMCC implements an enhanced 8051 core with eight datapointers and three 16-bit timers - Timer 0/1 are C501-compatible, while Timer 2 provides four-channel capture/compare for PWM or event timing. Its on-chip LCD controller drives up to 128 segments using 4 row (R0–R3) and 32 column (C0–C29) outputs, with programmable reference voltage generation and automatic duty-cycle control.

Real-time clock operation uses a dedicated 47-bit counter synchronized to a 32.768 kHz external crystal, enabling wake-up from software power-down mode via INT0 or RTC overflow. The microcontroller integrates a full-duplex USART with programmable baud rate generator, watchdog timer (15-bit), oscillator watchdog, and fast power-on reset circuitry.

Key Specifications

Pinout & Package

P-MQFP-80 package: 80-pin plastic metric quad flat pack with 0.5 mm lead pitch, thermally optimized for industrial PCB layouts and reflow compatibility.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SAF-C505L-4EMCC, SAF-C515C-4RMC trades field-programmability and analog integration for ROM-based reliability, while XC886CLM-8FFI sacrifices LCD integration for higher processing bandwidth and flash-based firmware updates - choice depends on whether display drive integration or computational headroom dominates system architecture.

Availability

SAF-C505L-4EMCC is available at Aetrix Electronics and suitable for industrial panel meters, appliance control panels, smart thermostats, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SAF-C505L-4EMCC 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 embedded controllers, with global manufacturing and quality certification to ISO/TS 16949 and AEC-Q100 standards.

The C500 microcontroller family targets cost-sensitive, display-intensive industrial and consumer applications requiring high integration of analog, timing, and human-interface peripherals in a single chip.

FAQ

What is the maximum operating frequency and corresponding instruction cycle time for SAF-C505L-4EMCC?

The SAF-C505L-4EMCC operates at up to 20 MHz with a 50% duty cycle, delivering a 300 ns instruction cycle time. This timing is verified under specified VDD (5 V ±10%) and temperature (–40 °C to +85 °C) conditions per the 06.99 datasheet. Instruction execution remains deterministic across all power-saving modes except slow-down mode, where clock division applies.

Does SAF-C505L-4EMCC support in-system programming of its OTP memory?

No, SAF-C505L-4EMCC uses one-time programmable (OTP) memory that must be programmed prior to soldering using a dedicated programmer and socketed device. The OTP array is not accessible via on-chip bootloader or serial interface; reprogramming requires physical device replacement. Programming voltage is 12.5 V applied to VPP pin during write cycles.

How many LCD segments can SAF-C505L-4EMCC drive, and what is the drive configuration?

The SAF-C505L-4EMCC drives up to 128 segments using a 1/4-duty static or multiplexed configuration with 4 row outputs (R0–R3) and up to 32 column outputs (C0–C29). Segments are activated by simultaneous row/column assertion; the controller handles timing, bias generation, and frame refresh automatically without CPU intervention.

Can the real-time clock operate independently during software power-down mode?

Yes, the 47-bit RTC continues counting in software power-down mode using the 32.768 kHz crystal input, consuming <2 µA typical. Wake-up occurs on RTC overflow or external INT0 edge, restoring full CPU operation within 2 µs. The RTC register set remains preserved, and no reinitialization is required after wake-up.