ATMEGA161L-4PC Atmel, ATMEGA161L-4PC Datasheet - Page 79
ATMEGA161L-4PC
Manufacturer Part Number
ATMEGA161L-4PC
Description
IC AVR MCU 16K LV 4MHZ COM 40DIP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA161-8AC.pdf
(159 pages)
Specifications of ATMEGA161L-4PC
Core Processor
AVR
Core Size
8-Bit
Speed
4MHz
Connectivity
SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
35
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
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The Baud Rate Generator in
Double UART Speed Mode
1228D–AVR–02/07
Note that the baud rate equation is different from the equation on page 76 when the
UART speed is doubled:
•
•
•
•
For standard crystal frequencies, the most commonly used baud rates can be generated
by using the UBR settings in Table 24. UBR values that yield an actual baud rate differ-
ing less than 1.5% from the target baud rate are boldface in the table. However, since
the number of samples are reduced and the system clock might have some variance
(this applies especially when using resonators), it is recommended that the baud rate
error be less than 0.5%.
BAUD = Baud rate
f
UBR = Contents of the UBRRHI and UBRR Registers (0 - 4095)
Note that this equation is only valid when the UART transmission speed is doubled.
CK
= Crystal Clock frequency
BAUD
=
----------------------------- -
8(UBR
f
CK
+
1 )
ATmega161(L)
79
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