at89c51rd2-smsum ATMEL Corporation, at89c51rd2-smsum Datasheet - Page 52
at89c51rd2-smsum
Manufacturer Part Number
at89c51rd2-smsum
Description
8-bit Flash Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C51RD2-SMSUM.pdf
(137 pages)
- Current page: 52 of 137
- Download datasheet (2Mb)
14.4.1
Figure 14-5. Internal Baud Rate
52
AT89C51RD2/ED2
Internal Baud Rate Generator (BRG)
Table 14-3.
When the internal Baud Rate Generator is used, the Baud Rates are determined by the BRG
overflow depending on the BRL reload value, the value of SPD bit (Speed Mode) in BDRCON
register and the value of the SMOD1 bit in PCON register.
Baud_Rate =
• The baud rate for UART is token by formula:
BRL = 256 -
(T2CON)
TCLK
X
X
X
0
1
0
1
0
1
F
Clk Periph
6
6
(1-SPD)
(1-SPD)
Baud Rate Selection Table UART
2
2
SMOD1
SMOD1
⋅ 32 ⋅ Baud_Rate
⋅ 32 ⋅ (256 -BRL)
(T2CON)
RCLK
÷ 6
X
X
X
0
0
1
1
0
1
⋅ F
⋅ F
PER
PER
BDRCON.1
SPD
0
1
(BDRCON)
TBCK
0
0
0
0
1
1
0
0
1
BDRCON.4
BRR
(BDRCON)
(8 bits)
(8 bits)
RBCK
BRG
BRL
0
0
0
0
0
0
1
1
1
Overflow
Clock Source
INT_BRG
INT_BRG
INT_BRG
UART Tx
Timer 1
Timer 2
Timer 1
Timer 2
Timer 1
Timer 2
÷ 2
SMOD1
PCON.7
0
1
Clock Source
4235J–8051–01/08
UART Rx
INT_BRG
INT_BRG
INT_BRG
Timer 1
Timer 1
Timer 2
Timer 2
Timer 1
Timer 2
INT_BRG
Related parts for at89c51rd2-smsum
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
AT89C51RD2-IM8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
Part Number:
Description:
IC MICRO CTRL 24MHZ 44TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MICRO CTRL 24MHZ 44PLCC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MICRO CTRL 24MHZ 44PLCC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MICRO CTRL 24MHZ 40DIP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MICRO CTRL 24MHZ 40DIP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
8-bit microcontroller with 4K bytes flash, 5V, 20MHz
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit microcontroller with 4K bytes flash, 5V, 20MHz
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
357-036-542-201 CARDEDGE 36POS DL .156 BLK LOPRO
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
IC MICRO CTRL 24MHZ 44TQFP
Manufacturer:
Atmel
Datasheet: