at89c5131 ATMEL Corporation, at89c5131 Datasheet - Page 70

• Manufacturer Part Number: at89c5131
• Description: 8-bit Flash Microcontroller With Full Speed Usb Device At89c5131
• Manufacturer: ATMEL Corporation

Figure 35. Internal Baud Rate
4136C–USB–04/05
CLK PERIPH
BRR
•
The baud rate for UART is token by formula:
/6
(BRL) = 256
Baud_Rate =
SPD
0
1
auto reload counter
-
2 x 2 x 6
2 x 2 x 6
BRG
BRL
2
2
SMOD1
overflow
(1-SPD)
SMOD1
(1-SPD)
x F
x 16 x Baud_Rate
x
x 16 x [256 - (BRL)]
F
CLK PERIPH
CLK PERIPH
/2
SMOD1
0
1
INT_BRG
AT89C5131
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