ATMEGA16U2-16AU Atmel, ATMEGA16U2-16AU Datasheet - Page 147

• Manufacturer Part Number: ATMEGA16U2-16AU
• Description: 8-bit Microcontrollers - MCU 16K Flash
• Manufacturer: Atmel

Specifications of ATMEGA16U2-16AU

• Product Category: 8-bit Microcontrollers - MCU
• Rohs: yes
• Core: AVR
• Data Bus Width: 8 bit
• Program Memory Size: 16 KB
• Data Ram Size: 1.25 KB
• Data Rom Size: 512 B
• Program Memory Type: Flash
• Factory Pack Quantity: 1250

17.5.3
7799D–AVR–11/10
SPDR – SPI Data Register
The SPI Data Register is a read/write register used for data transfer between the Register File
and the SPI Shift Register. Writing to the register initiates data transmission. Reading the regis-
ter causes the Shift Register Receive buffer to be read.
Bit
0x2E (0x4E)
Read/Write
Initial Value
MSB
R/W
7
X
R
X
6
–
R
5
–
X
R
X
4
–
ATmega8U2/16U2/32U2
R
3
–
X
R
X
2
–
R
1
–
X
LSB
R/W
X
0
Undefined
SPDR
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