AT90USB82-16MU Atmel, AT90USB82-16MU Datasheet - Page 149
AT90USB82-16MU
Manufacturer Part Number
AT90USB82-16MU
Description
IC AVR MCU 8K FLASH 32QFN
Manufacturer
Atmel
Series
AVR® 90USBr
Datasheet
1.AT90USB82-16MU.pdf
(307 pages)
Specifications of AT90USB82-16MU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, PS/2, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
22
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-QFN
Controller Family/series
AVR USB
No. Of I/o's
22
Eeprom Memory Size
512Byte
Ram Memory Size
512Byte
Cpu Speed
16MHz
Rohs Compliant
Yes
Processor Series
AT90USBx
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
SPI, USART, debugWIRE
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
22
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATSTK525, ATSTK526, ATAVRISP2, ATAVRONEKIT, AT90USBKEY, ATEVK525
Minimum Operating Temperature
- 40 C
Package
32QFN EP
Device Core
AVR
Family Name
AT90
Maximum Speed
16 MHz
Operating Supply Voltage
3.3|5 V
For Use With
ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATSTK526 - KIT STARTER FOR AT90USB82/162ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATSTK525 - KIT STARTER FOR AT90USBAT90USBKEY2 - KIT DEMO FOR AT90USB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT90USB82-16MU
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
- Current page: 149 of 307
- Download datasheet (4Mb)
Table 17-1.
17.2.2
7707F–AVR–11/10
Operating Mode
Asynchronous Normal mode
(U2Xn = 0)
Asynchronous Double Speed
mode (U2Xn = 1)
Synchronous Master mode
Double Speed Operation (U2Xn)
Equations for Calculating Baud Rate Register Setting
Table 17-1
ing the UBRRn value for each mode of operation using an internally generated clock source.
Note:
Some examples of UBRRn values for some system clock frequencies are found in
page
The transfer rate can be doubled by setting the U2Xn bit in UCSRnA. Setting this bit only has
effect for the asynchronous operation. Set this bit to zero when using synchronous operation.
Setting this bit will reduce the divisor of the baud rate divider from 16 to 8, effectively doubling
the transfer rate for asynchronous communication. Note however that the Receiver will in this
case only use half the number of samples (reduced from 16 to 8) for data sampling and clock
recovery, and therefore a more accurate baud rate setting and system clock are required when
this mode is used. For the Transmitter, there are no downsides.
170.
BAUD
f
UBRRn
OSC
1. The baud rate is defined to be the transfer rate in bit per second (bps)
contains equations for calculating the baud rate (in bits per second) and for calculat-
Equation for Calculating Baud Rate
BAUD
BAUD
BAUD
Baud rate (in bits per second, bps)
System Oscillator clock frequency
Contents of the UBRRHn and UBRRLn Registers, (0-4095)
=
=
=
----------------------------------------- -
16 UBRRn
-------------------------------------- -
8 UBRRn
-------------------------------------- -
2 UBRRn
(
(
(
f
f
f
OSC
OSC
OSC
+
+
+
1
1
1
)
)
)
(1)
UBRRn
UBRRn
UBRRn
Equation for Calculating UBRR Value
=
=
=
----------------------- - 1
16BAUD
------------------- - 1
8BAUD
------------------- - 1
2BAUD
AT90USB82/162
f
f
f
OSC
OSC
OSC
–
–
–
Table 17-9 on
149
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