## What is the maximum baud rate?

9600 bits per second

Baud rate is commonly used when discussing electronics that use serial communication. In the serial port context, “9600 baud” means that the serial port is capable of transferring a maximum of 9600 bits per second. At baud rates above 76,800, the cable length will need to be reduced.

**What is the TH1 value when calculating baud rate 9600 for 8051 controller?**

To meet the standard baud rates generally crystal with 11.0592 MHz is used. As we know, 8051 divides crystal frequency by 12 to get a machine cycle frequency of 921.6 kHz….8051 UART Programming.

Baud Rate | TH1 (Hex) |
---|---|

9600 | FD |

4800 | FA |

2400 | F4 |

1200 | E8 |

**What is baud rate formula?**

The formula of Baud Rate is: = bit rate / the number of bit per baud.

### What is the maximum baud rate of UART?

So at the default setting, the max UART baud rate is 115200. allows the baud rate to be as high as 921600 which is all the speed I need for my application. Set it even higher for higher baud rates if the other side can handle it.

**What is the difference between baud rate and bitrate?**

Bit rate is transmission of number of bits per second. Baud rate is number of signal units per second. It can be defined as per second travel number of bits. Baud rate focusses on data transmission.

**When SMOD rate is 1 the 8051 divides F 12 of the crystal frequency by and uses that frequency for timer 1 to set the baud rate?**

Both these cases could be explained differently as follows. When SMOD is set = 0, the 8051 divides 1/12 of the crystal frequency by 32 and uses that frequency for Timer 1 to set the baud rate.

## What is the TH1 value when calculating baud rate 9600 for 8051 controller operating at 12mhz when SMOD is zero?

Solution: With XTAL = 11.0592 MHz and SMOD = 1, we have Tinier 1 frequency = 57,600 Hz. 57,600 / 9600 = 6; therefore, TH1 = -6 or TH1 = FAH.

**How do you calculate maximum bit rate?**

For example, if a transmission system like the telephone network has 3000 Hz of bandwidth, then the maximum data rate = 2 × 3000 log2 2 = 6000 bits/sec (bps). The Shannon theorem states the maximum data rate as follows: (5.2) where S is the signal power and N is the noise power.

**What is 2400 baud rate?**

A 2,400 Modem (V. 26bis), getting 2 bits per baud, has a Baud Rate of 1200. A 56 Kbps Modem (V. 90) has a 56 Kbps download and 33.6 Kbps upload using 8000 Baud and 3429 Baud respectively.

### What is the maximum baud rate of 8051?

A standard 8051 (12 clocks per machine cycle and a 16X serial clock) has a maximum baud rate of 57600 with a 11.0592MHz crystal. For instance with timer 1 set to 8 bit auto-reload mode, to get 9600 baud you take 11.0592MHz, divide by 12 then 16 to get 57600.

**What baud rate generator does the UART use?**

In modes 1 and 3, where the UART has an adjustable, variable baud rate, the UART uses either the 8051 s dedicated Timer 1 or Timer 2 as the baud-rate generator. The baud is determined by a few factors including.

**What is the baud rate in Mode 2?**

In mode 2 the baud rate is always the oscillator frequency divided by 64, so a 11.059Mhz crystal speed will yield a baud rate of 172,797. In modes 1 and 3, the baud rate is determined by how frequently timer 1 overflows.

## How do I set the baud rate of timer 1?

Mode 1 & 3: Baud rate is determined by how frequently timer 1 overflows. The most common method is to configure timer 1 in 8-bit auto reload mode and set a reload value (TH1) that causes Timer 1 to overflow at a frequency appropriate to generate a baud rate. The following equation is used to determine the TH1 value.