AT89C5131A-TISIL Atmel, AT89C5131A-TISIL Datasheet - Page 70

• Manufacturer Part Number: AT89C5131A-TISIL
• Description: IC 8051 MCU FLASH 32K USB 28SOIC
• Manufacturer: Atmel
• Series: AT89C513xr

Specifications of AT89C5131A-TISIL

• Core Processor: C52X2
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, SPI, UART/USART, USB
• Peripherals: LED, POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• For Use With: AT89STK-10 - KIT EVAL APPL MASS STORAGEAT89STK-05 - KIT STARTER FOR AT89C5131
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

Figure 38. Internal Baud Rate
70
AT89C5131A-L
Peripheral Clock
BRR
•
The baud rate for UART is token by formula:
/6
(BRL) = 256
Baud_Rate =
SPD
0
1
auto reload counter
-
2 x 6
2 x 6
BRG
BRL
(1-SPD)
(1-SPD)
2
2
SMOD1
overflow
SMOD1
x 16 x Baud_Rate
x 16 x [256 - (BRL)]
x F
x
F
CLK PERIPH
CLK PERIPH
/2
SMOD1
0
1
INT_BRG
4338F–USB–08/07