80CL51

Philips Semiconductors Low-voltage single-chip 8-bit microcontrollers Product specification 80CL31/80CL51 FEATURES Full static 80C51 CPU 8-bit CPU, ROM, RAM, 1/0 in a single 40-lead DIL / mini-pack 4K x 8 ROM, expandable externally to 64K bytes 128 bytes RAM, expandable externally to 64K bytes Four 8-bit ports, 321/0 lines Two 16-bit timer / event counters External memory expandable up to 128K, external ROM up to 64K and / or RAM up to 64K On-chip oscillator suitable for RC, LC, quartz crystal or ceramic resonator Thirteen source, thirteen vector interrupt structure with two priority levels Full duplex serial port (UART) Enhanced architecture with: – non-page oriented instructions – direct addressing – four eight byte RAM register banks – stack depth up to 128 bytes – multiply, divide, subtract and compare instructions Power-Down and IDLE instructions Wake-up via external interrupts at Port 1 Single supply voltage of ...