AT89C5130A-RDRUM Atmel, AT89C5130A-RDRUM Datasheet - Page 73

• Manufacturer Part Number: AT89C5130A-RDRUM
• Description: MCU 8051 16K FLASH USB 64-VQFP
• Manufacturer: Atmel
• Series: AT89C513xr

Specifications of AT89C5130A-RDRUM

• Core Processor: C52X2
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, SPI, UART/USART, USB
• Peripherals: LED, POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: AT89STK-05
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -

15.3.1
15.3.2
Figure 15-5. Internal Baud Rate
4337K–USB–04/08
(T2CON)
TCLK
X
X
X
0
1
0
1
0
1
Baud Rate Selection Table for UART
Internal Baud Rate Generator (BRG)
Peripheral Clock
BRR
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.
Table 15-1.
(T2CON)
RCLK
• The baud rate for UART is token by formula:
FE/SM0
0
0
1
1
0
1
X
X
X
7
SCON Register – SCON Serial Control Register (98h)
SM1
/6
6
(BRL) = 256
Baud_Rate =
(BDRCON)
TBCK
0
0
0
0
1
1
0
0
1
SPD
0
1
SM2
5
auto reload counter
-
2 x 6
2 x 6
(1-SPD)
(1-SPD)
REN
BRG
BRL
(BDRCON)
2
2
4
SMOD1
RBCK
SMOD1
0
0
0
0
0
0
1
1
1
overflow
x 16 x Baud_Rate
x 16 x [256 - (BRL)]
x F
x
F
CLK PERIPH
CLK PERIPH
TB8
3
AT89C5130A/31A-M
/2
Clock Source
INT_BRG
INT_BRG
INT_BRG
UART Tx
Timer 1
Timer 2
Timer 1
Timer 2
Timer 1
Timer 2
RB8
2
SMOD1
0
1
INT_BRG
TI
1
Clock Source
UART Rx
INT_BRG
INT_BRG
INT_BRG
Timer 1
Timer 1
Timer 2
Timer 2
Timer 1
Timer 2
RI
0
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