DESCRIPTION

The 89C51/89C52/89C54/89C58 contain a non-volatile FLASH program memory that is parallel programmable. For devices that are serial programmable (In System Programmable (ISP) with a boot loader), see the 89C51RC+/89C51RD+ datasheet. Both families are Single-Chip 8-bit Microcontrollers manufactured in advanced CMOS process and are derivatives of the 80C51

microcontroller family. All the devices have the same instruction set as the 80C51.

FEATURES

• 80C51 Central Processing Unit

• On-chip FLASH Program Memory

• Speed up to 33 MHz

• Full static operation

• RAM expandable externally to 64 k bytes

• 4 level priority interrupt

• 6 interrupt sources

• Four 8-bit I/O ports

• Full-duplex enhanced UART

– Framing error detection

– Automatic address recognition

• Power control modes

– Clock can be stopped and resumed

– Idle mode

– Power down mode

• Programmable clock out

• Second DPTR register

• Asynchronous port reset

• Low EMI (inhibit ALE)

• 3 16-bit timers

• Wake up from power down by an external interrupt