vrs51c1100 ETC-unknow, vrs51c1100 Datasheet - Page 29

• Manufacturer Part Number: vrs51c1100
• Description: Versa 8051 Mcu With 128kb Of Iap/isp Flash
• Manufacturer: ETC-unknow

VRS51C1100
The following formula can be used to calculate the
baud rate in modes 1 and 3 using Timer 2:
Modes 1, 3 Baud Rate =
Oscillator Frequency
32x[65536 – (RCAP2H, RCAP2L)]
The formula below is used to define the reload value
written into the RCAP2h, RCAP2L registers to achieve
a given baud rate.
(RCAP2H, RCAP2L) = 65536 -
Fosc
32x[Baud Rate]
In the above formula, RCAP2H and RCAP2L are the
contents of RCAP2H and RCAP2L taken as a 16-bit
unsigned integer. Note that a rollover in TH2 does not
set TF2 and will not generate an interrupt. As such, the
Timer 2 interrupt does not have to be disabled when
Timer 2 is configured in baud rate generator mode.
Furthermore, when Timer 2 is configured as a UART
baud rate generator and is running (TR2 is set to 1),
the user should not try to perform read or write
operations to the TH2/TL2, RCAP2H and RCAP2L
registers.
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