Introduction

The C505CA-xC derivatives, which refer to C505CA-4RC and C505CA-LC in this document, are high performance derivatives of the Infineon C500 family of 8-bit microcontrollers. The C505CA-xC derivatives are fully compatible to the standard 8051 microcontroller. Additionally the C505CA-xC provides extended power save provisions, on-chip RAM, 1K byte XRAM, on-chip ROM, 10-bit A/D converter, and RFI related improvements.

Features

? Fully compatible to standard 8051 microcontroller

? Superset of the 8051 architecture with 8 datapointers

? Up to 20 MHz operating frequency

– 375 ns instruction cycle time @16 MHz

– 300 ns instruction cycle time @20 MHz (50 duty cycle)

? On-chip program memory (with optional memory protection)

– 32K byte on-chip Mask ROM

– alternatively up to 64k byte external program memory

? 256 byte on-chip RAM

? 1K byte On-chip XRAM

? 32 + 2 digital I/O lines

– Four 8-bit digital I/O ports

– One 2-bit digital I/O port (port 4)

– Port 1 with mixed analog/digital I/O capability

? Three 16-bit timers/counters

– Timer 0 / 1 (C501 compatible)

– Timer 2 with 4 channels for 16-bit capture/compare operation

? Full duplex serial interface with programmable baudrate generator (USART)

? Full CAN Module, version 2.0 B compliant

– 256 register/data bytes located in external data memory area

– 1 MBaud CAN baudrate when operating frequency is equal to or above 8 MHz

– internal CAN clock prescaler when input frequency is over 10 MHz

? On-chip A/D Converter

– up to 8 analog inputs

– 10-bit resolution

? Twelve interrupt sources with four priority levels

? On-chip emulation support logic (Enhanced Hooks Technology TM1))

? Programmable 15-bit watchdog timer

? Oscillator watchdog

? Fast power on reset

? Power Saving Modes

– Slow-down mode

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

– Software power-down mode with wake up capability through P3.2/INT0 or P4.1/RXDC pin

? Temperature ranges:

SAB-C505 versions TD = 0 to 70 °C

SAF-C505 versions TD = -40 to 85 °C

SAK-C505 versions TD = -40 to 125 °C

SAA-C505 versions TD = -40 to 150 °C