Introduction

The C517A is a high-end member of the Siemens C500 family of 8-bit microcontrollers. lt is functionally fully compatible with the SAB-80C517A/83C537A-5 microcontrollers.

The C517A basically operates with internal and/or external program memory. The C517A-L is identical to the C517A-4R, except that it lacks the on-chip program memory. Therefore, in this documentation the term C517A refers to all versions within this specification unless otherwise noted.

Listed below is a summary of the main features of the C517A:

? Full upward compatibility with SAB 80C517A/83C517A-5

? Up to 24 MHz external operating frequency

– 500 ns instruction cycle at 24 MHz operation

? Superset of the 8051 architecture with 8 datapointers

? 32K byte on-chip ROM (with optional ROM protection)

– alternatively up to 64K byte external program memory

? Up to 64K byte external data memory

? 256 byte on-chip RAM

? 2K byte on-chip RAM (XRAM)

? Seven 8-bit parallel I/O ports

? Two input ports for analog/digital input

? Two full duplex serial interfaces (USART)

– 4 operating modes, fixed or variabie baud rates

– programmable baud rate generators

? Four 16-bit timer/counters

– Timer 0 / 1 (C501 compatible)

– Timer 2 for 16-bit reload, compare, or capture functions

– Compare timer for compare/capture functions

? Powerful 16-bit compare/capture unt (CCU) with up to 21 high-speed or PWM output channels

and 5 capture inputs

? 10-bit A/D converter

– 12 multiplexed analog inputs

– Built-in self calibration

? Extended watchdog facilities

– 15-bit programmable watchdog timer

– Oscillator watchdog

? Power saving modes

– Slow down mode

– Idle mode (can be combined with slow down mode)

– Software power down mode

– Hardware power down mode

? 17 interrupt sources (7 external, 10 internal) selectable at 4 priority levels

? On-chip emulation support logic (Enhanced Hooks Technology TM)

? P-MQFP-100 and P-LCC-84 packages

? Temperature Ranges : SAB-C517A TA = 0 to 70 °C

SAF-C517A TA = -40 to 85 °C

SAH-C517A TA = -40 to 110 °C