? Fully compatible to standard 8051 microcontroller

? Up to 40 MHz external operating frequency

? 16 Kbyte on-chip program memory

– C504-2R: ROM version (with optional ROM protection)

– C504-2E: programmable OTP version

– C504-L: without on-chip program memory

? 256 byte on-chip RAM

? 256 byte on-chip XRAM

? Four 8-bit ports

– 2 ports with mixed analog/digital I/O capability

? Three 16-bit timers/counters

– Timer 2 with up/down counter feature

? Capture/compare unit for PWM signal generation and signal capturing

– 3-channel, 16-bit capture/compare unit

– 1-channel, 10-bit compare unit

? Full duplex serial interface (USART)

? 10-bit A/D Converter with 8 multiplexed inputs

? Twelve interrupt sources with two priority levels

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

? Programmable 15-bit Watchdog Timer

? Oscillator Watchdog

? Fast Power On Reset

? Power Saving Modes

– Idle mode

– Power-down mode with wake-up capability through INT0

? M-QFP-44 package

? Temperature ranges: SAB-C504 TA: 0 to 70 °C

SAF-C504 TA: – 40 to 85 °C

SAK-C504 TA: – 40 to 125 °C

(max. operating frequency: 24 MHz)