AT89C51RC2-RLTIL Atmel, AT89C51RC2-RLTIL Datasheet - Page 54

• Manufacturer Part Number: AT89C51RC2-RLTIL
• Description: 8-bit Microcontrollers - MCU 80C31 w/4k
• Manufacturer: Atmel

Specifications of AT89C51RC2-RLTIL

• Product Category: 8-bit Microcontrollers - MCU
• Core: 8051
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 60 MHz
• Program Memory Size: 32 KB
• Data Ram Size: 1280 B
• On-chip Adc: No
• Operating Supply Voltage: 2.7 V to 5.5 V
• Package / Case: VQFP-44
• Mounting Style: SMD/SMT
• Interface Type: SPI, UART
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Program Memory Type: Flash
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 2.7 V

54
AT89C51RB2/RC2
Table 42. BDRCON Register
BDRCON - Baud Rate Control Register (9Bh)
Reset Value = XXX0 0000b
Not bit addressablef
Number
Bit
7
-
7
6
5
4
3
2
1
0
Mnemonic
RBCK
TBCK
BRR
SRC
SPD
Bit
6
-
-
-
-
Description
Reserved
The value read from this bit is indeterminate. Do not set this bit
Reserved
The value read from this bit is indeterminate. Do not set this bit
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Baud Rate Run Control bit
Cleared to stop the internal Baud Rate Generator.
Set to start the internal Baud Rate Generator.
Transmission Baud rate Generator Selection bit for UART
Cleared to select Timer 1 or Timer 2 for the Baud Rate Generator.
Set to select internal Baud Rate Generator.
Reception Baud Rate Generator Selection bit for UART
Cleared to select Timer 1 or Timer 2 for the Baud Rate Generator.
Set to select internal Baud Rate Generator.
Baud Rate Speed Control bit for UART
Cleared to select the SLOW Baud Rate Generator.
Set to select the FAST Baud Rate Generator.
Baud Rate Source select bit in Mode 0 for UART
Cleared to select F
mode).
Set to select the internal Baud Rate Generator for UARTs in mode 0.
5
-
BRR
4
OSC
/12 as the Baud Rate Generator (F
TBCK
3
RBCK
2
CLK PERIPH
SPD
1
4180E–8051–10/06
/6 in X2
SRC
0