S3F8-Series Microcontrollers

Zilog's S3F8-series of 8-bit single-chip CMOS microcontrollers offers a fast and efficient CPU, a wide range of integrated peripherals, and various Flash memory ROM sizes. 

Important CPU features include: 

• Efficient register-oriented architecture 

• Selectable CPU clock sources 

• Idle and Stop power-down mode release by interrupts 

• Built-in basic timer with watchdog function A sophisticated interrupt structure recognizes up to eight interrupt levels. Each level can have one or more interrupt sources and vectors. Fast interrupt processing (within a minimum four CPU clocks) can be assigned to specific interrupt levels. 

S3F80QB Microcontroller

The S3F80QB single-chip CMOS microcontroller is fabricated using a highly advanced CMOS process and is based on Zilog's newest CPU architecture. 

The S3F80QB is the microcontroller which has 63 Kbyte Flash Memory ROM. 

Using a proven modular design approach, Zilog engineers developed S3F80QB by integrating the following peripheral modules with the powerful SAM8 RC core:

• Internal LVD circuit and 16-bit programmable pins for external interrupts. 

• One 8-bit basic timer for oscillation stabilization and watchdog function (system reset). 

• One 8-bit Timer/counter with three operating modes. 

• Two 16-bit timer/counters with selectable operating modes. 

• One 8-bit counter with auto-reload function and one-shot or repeat control. 

• One 24-bit free running timer. 

• One 8-bit SPI The S3F80QB is a versatile general-purpose microcontroller, which is especially suitable for use as remote transmitter controller. It is currently available in 44-pin ELP and 44-pin QFP packages.




  • Package - 44-pin QFP

  • I/O - 38

  • Interrupts - 25

  • Timers - BT, (1) 8-Bit, (2) 16-Bit

  • Speed (MHz) - 8

  • Operating Voltage - 1.6V - 3.6V

  • Other Features - WDT, CFG, LVR, LVD, IRO, FRT

  • RAM (bytes) - 1296

  • COMM Interfaces - SPI

  • Program Memory - 62 KB Flash