AT89C51CC03C-SLSIM View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT89C51CC03C-SLSIM

Enhanced 8-bit MCU with CAN Controller and Flash Memory

Atmel Corporation 

Figure 6. Mode Switching Waveforms

XTAL1

XTAL1/2

X2 bit

CPU clock

STD Mode

X2 Mode

STD Mode

Note:

In order to prevent any incorrect operation while operating in the X2 mode, users must be aware that all peripherals using the

clock frequency as a time reference (UART, timers...) will have their time reference divided by two. For example a free running

timer generating an interrupt every 20 ms will then generate an interrupt every 10 ms. A UART with a 4800 baud rate will have

a 9600 baud rate.

20 AT89C51CC03

4182K–CAN–05/06

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