ATMEGA8U2-AU Atmel, ATMEGA8U2-AU Datasheet - Page 169
![MCU AVR 8K FLASH 16MHZ 32TQFP](/photos/6/91/69154/313-32-tqfp_sml.jpg)
ATMEGA8U2-AU
Manufacturer Part Number
ATMEGA8U2-AU
Description
MCU AVR 8K FLASH 16MHZ 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA8U2-AU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
22
Program Memory Size
8KB (4K x 16)
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-TQFP, 32-VQFP
Processor Series
ATmega
Core
AVR
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
SPI, USART, USB
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
22
Number Of Timers
2
Operating Supply Voltage
5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, AT90USBKEY, ATEVK525
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
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
Company:
Part Number:
ATMEGA8U2-AU
Manufacturer:
Atmel
Quantity:
2 772
Part Number:
ATMEGA8U2-AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
- Current page: 169 of 309
- Download datasheet (6Mb)
18.11.4
7799D–AVR–11/10
UCSRnC – USART Control and Status Register n C
• Bit 4 – RXENn: Receiver Enable n
Writing this bit to one enables the USART Receiver. The Receiver will override normal port oper-
ation for the RxDn pin when enabled. Disabling the Receiver will flush the receive buffer
invalidating the FEn, DORn, and UPEn Flags.
• Bit 3 – TXENn: Transmitter Enable n
Writing this bit to one enables the USART Transmitter. The Transmitter will override normal port
operation for the TxDn pin when enabled. The disabling of the Transmitter (writing TXENn to
zero) will not become effective until ongoing and pending transmissions are completed, i.e.,
when the Transmit Shift Register and Transmit Buffer Register do not contain data to be trans-
mitted. When disabled, the Transmitter will no longer override the TxDn port.
• Bit 2 – UCSZn2: Character Size n
The UCSZn2 bits combined with the UCSZn1:0 bit in UCSRnC sets the number of data bits
(Character SiZe) in a frame the Receiver and Transmitter use.
• Bit 1 – RXB8n: Receive Data Bit 8 n
RXB8n is the ninth data bit of the received character when operating with serial frames with nine
data bits. Must be read before reading the low bits from UDRn.
• Bit 0 – TXB8n: Transmit Data Bit 8 n
TXB8n is the ninth data bit in the character to be transmitted when operating with serial frames
with nine data bits. Must be written before writing the low bits to UDRn.
• Bits 7:6 – UMSELn[1:0] USART Mode Select
These bits select the mode of operation of the USARTn as shown in
Table 18-4.
Note:
• Bits 5:4 – UPMn1:0: Parity Mode
These bits enable and set type of parity generation and check. If enabled, the Transmitter will
automatically generate and send the parity of the transmitted data bits within each frame. The
Bit
Read/Write
Initial Value
UMSELn1
1. See
operation
0
0
1
1
UMSELn1
UMSELn Bits Settings
R/W
“USART in SPI Mode” on page 176
7
0
UMSELn0
R/W
6
0
UMSELn0
UPMn1
R/W
0
1
0
1
5
0
UPMn0
R/W
4
0
for full description of the Master SPI Mode (MSPIM)
Mode
Asynchronous USART
Synchronous USART
(Reserved)
Master SPI (MSPIM)
ATmega8U2/16U2/32U2
USBSn
R/W
3
0
UCSZn1
R/W
2
1
Table
UCSZn0
(1)
R/W
1
1
18-4..
UCPOLn
R/W
0
0
UCSRnC
169
Related parts for ATMEGA8U2-AU
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![ATMEGA8-16AU](/photos/6/91/69154/313-32-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ 5V 32TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16MU](/photos/12/32/123219/atmega8-16mu_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ 5V 32-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16PU](/photos/7/21/72189/453-28-dip_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ 5V 28DIP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16AC](/photos/6/91/69154/313-32-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ COM 32-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16AI](/photos/6/91/69154/313-32-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ IND 32-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16PC](/photos/7/21/72189/453-28-dip_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ COM 28-DIP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16PI](/photos/7/21/72189/453-28-dip_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ IND 28-DIP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16MC](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ COM 32-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16MUR](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
MCU AVR 8KB FLASH 16MHZ 32QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16MI](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ IND 32-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16AJ](/photos/6/91/69154/313-32-tqfp_tmb.jpg)
Part Number:
Description:
IC MCU AVR 8K 5V 16MHZ 32-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16MJ](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
IC MCU AVR 8K 5V 16MHZ 32-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16PJ](/photos/7/21/72189/453-28-dip_tmb.jpg)
Part Number:
Description:
IC MCU AVR 8K 5V 16MHZ 28-DIP
Manufacturer:
Atmel
Datasheet: