Why clock frequency of microcontroller 8051 is11.059

Question Posted / avdhut pandit

2 Answers
11401 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Why clock frequency of microcontroller 8051 is11.059..

Answer / saili

the 8051 serial communication uses 11.059 MHz clock frqueny.
this is used to obtain a specific standardised bit rate for
serial communication. using 12MHz or 24MHz frequeny wont
yeild a proper standard bit rate in serial communication.

Is This Answer Correct ?

19 Yes

7 No

Why clock frequency of microcontroller 8051 is11.059..

Answer / sunil h yadav

The maximum operating frequency=1/2*clock frequency.
The clock frequency of 8051 is 24MHz.As 8051 has two crystal pins,therefore max.operating frq.becomes 12MHz.But due to some
constraints max.frequency reduces to 11.059

Is This Answer Correct ?

20 Yes

14 No

Post New Answer

More Electronics Communications Interview Questions

convert 21 kva into kw

2 Answers Infosys,

What is meant by D-FF? What is the basic difference between Latches and Flip flops? What is a multiplexer? How can you convert an SR Flip-flop to a JK Flip-flop? How can you convert an JK Flip-flop to a D Flip-flop? What is Race-around problem? How can you rectify it? Which semiconductor device is used as a voltage regulator and why? What do you mean by an ideal voltage source? What do you mean by zener breakdown and avalanche breakdown? What are the different types of filters? What is the need of filtering ideal response of filters and actual response of filters? What is sampling theorem? What is impulse response? Explain the advantages and disadvantages of FIR filters compared to IIR counterparts. What is CMRR? Explain briefly. What do you mean by half-duplex and full-duplex communication? Explain briefly. Which range of signals are used for terrestrial transmission? What is the need for modulation? Which type of modulation is used in TV transmission? Why we use vestigial side band (VSB-C3F) transmission for picture? When transmitting digital signals is it necessary to transmit some harmonics in addition to fundamental frequency? For asynchronous transmission, is it necessary to supply some synchronizing pulses additionally or to supply or to supply start and stop bit? BPFSK is more efficient than BFSK in presence of noise. Why? What is meant by pre-emphasis and de-emphasis? What do you mean by 3 dB cutoff frequency? Why is it 3 dB, not 1 dB?

0 Answers MAHINDRA,

why sawtooth waveform is used in thyrisrot triggring circuit

0 Answers

How Timer Interrupt program Executed?

1 Answers TCS,

If we have 450 mm height boiler drum level, so what is span & zero value for a dpt transmitter?

0 Answers

cdma or gsm which is more complex?

10 Answers Nokia,

Explain how to convert binary to gray code and vice-verse?

0 Answers

write a program that changes 74H to 47H in 8085 assembly programming