The C509-L is a high-end microcontroller in the Siemens C500 8-bit microcontroller family. lt is based on the well-known industry standard 8051 architecture; a great number of enhancements and new peripheral features extend its capabilities to meet the extensive requirements of new applications. Further, the C509-L is a superset of the Siemens SAB 80C517/80C517A 8-bit microcontroller thus offering an easy upgrade path for SAB 80C517/80C517A users.

Advance Information
• Full upward compatibility with SAB 80C517/80C517A and 8051/C501 microcontrollers
• 256 byte on-chip RAM
• 3K byte of on-chip XRAM
• 256 directly addressable bits
• 375 ns instruction cycle at 16-MHz oscillator frequency
• On-chip emulation support logic (Enhanced Hooks Technology TM)
• External program and data memory expandable up to 64 Kbyte each
• 8-bit A/D converter with 15 multiplexed inputs and built-in self calibration
• Two 16-bit timers/counters (8051 compatible)
• Three 16-bit timers/counters (can be used in combination with the compare/capture unit)
• Powerful compare/capture unit (CCU) with up to 29 high-speed or PWM output channels or 13 capture inputs
• Arithmetic unit for division, multiplication, shift and normalize operations
• Eight datapointers instead of one for indirect addressing of program and external data memory
• Extended watchdog facilities
    – 15-bit programmable watchdog timer
    – Oscillator watchdog
• Ten I/O ports
    – Eight bidirectional 8-bit I/O ports with selectable port structure quasi-bidirectional port structure (8051 compatible) bidirectional port structure with CMOS voltage levels
    – One 8-bit and one 7-bit input port for analog and digital input signals
• Two full-duplex serial interfaces with own baud rate generators
• Four priority level interrupt systems, 19 interrupt vectors
• Three power saving modes
    – Slow-down mode
    – Idle mode
    – Power-down mode
• Siemens high-performance ACMOS technology
• M-QFP-100-2 rectangular quad flat package
• Temperature Ranges : SAB-C509-L TA = 0 to 70 °C SAF-C509-L TA = -40 to 85 °C