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Datasheet |
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89C51/89C52/89C54/89C58; 80C51 8-bit microcontroller family Datasheet |
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A summary of the datasheet is shown below. Get the full datasheet as a PDF. 
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) and In-Application Programmable (IAP) with a boot loader), see the 89C51Rx2 or 89C66x datasheets.
All three 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
-Fully static operation
-RAM expandable externally up to 64 kbytes
-4 interrupt priority levels
-6 interrupt sources
-Four 8-bit I/O ports
-Full-duplex enhanced UART
-Framing error detection
-Automatic address recognition
-Three 16-bit timers/counters T0, T1 (standard 80C51) and additional T2 (capture and compare)
-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)
-Wake up from power down by an external interrupt
See the full datasheet as a PDF
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