Advance Information

Features
• Fully compatible with the 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)
• Program Memory
   – 32K bytes of on-chip OTP memory
   – Externally expandable up to 64 Kbytes
• 256-byte on-chip RAM
• 256-byte on-chip XRAM
• Five 8-bit and one 6-bit digital I/O ports (Port 5 with 6 bits only)
   – Port 1 with mixed analog/digital I/O capability
   – Port 3 with 2 LCD output lines as secondary functions
   – Port 4 and 5 with 8 and 6 LCD output lines respectively as secondary functions
• Three 16-bit timers/counters
   – Timer 0 / 1 (C501 compatible)
   – Timer 2 with 4 channels for 16-bit capture/compare operation
• 128-segment LCD Controller
   – 1/4 duty cycle drive
   – 4 row and 32 column outputs
   – On-chip programmable reference voltage generation
   – 20 dedicated LCD output lines (4 rows + 16 columns)
• Real-Time Clock
   – 47-bit digital clock counter
   – Input frequency of 32.768 KHz required
   – Operates in a special power down mode
• Full duplex serial interface with programmable baudrate generator (USART)
• 10-bit A/D Converter with 8 multiplexed inputs
• Twelve interrupt sources with four priority levels
• On-chip emulation support logic (Enhanced HooksTM 1))
• 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)
   – 3 special power down modes
   – Software power-down mode with wake up capability through INT0 pin or Real-Time Clock
• P-MQFP-80 package
• Temperature ranges: SAB-C505L TA = 0 to 70 °C
   SAF-C505L TA = – 40 to 85 °C
   SAK-C505L TA = – 40 to 125 °C (max. operating frequency: 12 MHz)