ATmega256RZAV Atmel Corporation, ATmega256RZAV Datasheet - Page 240
ATmega256RZAV
Manufacturer Part Number
ATmega256RZAV
Description
Manufacturer
Atmel Corporation
Specifications of ATmega256RZAV
Flash (kbytes)
256 Kbytes
Max. Operating Frequency
16 MHz
Max I/o Pins
54
Spi
3
Twi (i2c)
1
Uart
2
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Crypto Engine
No
Sram (kbytes)
8
Eeprom (bytes)
4096
Operating Voltage (vcc)
1.8 to 3.6
Timers
6
Frequency Band
2.4 GHz
Max Data Rate (mb/s)
0.25
Antenna Diversity
No
External Pa Control
No
Power Output (dbm)
3
Receiver Sensitivity (dbm)
-101
Receive Current Consumption (ma)
16.0
Transmit Current Consumption (ma)
17.0
Link Budget (dbm)
104
Available stocks
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Manufacturer
Quantity
Price
Company:
Part Number:
ATmega256RZAV-8MU
Manufacturer:
Atmel
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23.6.5
2549N–AVR–05/11
UBRRnL and UBRRnH – USART MSPIM Baud Rate Registers
• Bit 2 - UDORDn: Data Order
When set to one the LSB of the data word is transmitted first. When set to zero the MSB of the
data word is transmitted first. Refer to
• Bit 1 - UCPHAn: Clock Phase
The UCPHAn bit setting determine if data is sampled on the leasing edge (first) or tailing (last)
edge of XCKn. Refer to
• Bit 0 - UCPOLn: Clock Polarity
The UCPOLn bit sets the polarity of the XCKn clock. The combination of the UCPOLn and
UCPHAn bit settings determine the timing of the data transfer. Refer to
Timing” on page 233
The function and bit description of the baud rate registers in MSPI mode is identical to normal
USART operation.
Table 23-4.
USART_MSPIM
XCKn
RxDn
TxDn
(N/A)
Comparison of USART in MSPIM mode and SPI pins.
See “UBRRnL and UBRRnH – USART Baud Rate Registers” on page 227.
for details.
“SPI Data Modes and Timing” on page 233
ATmega640/1280/1281/2560/2561
MOSI
MISO
SCK
SPI
SS
“SPI Data Modes and Timing” on page 233
Not supported by USART in MSPIM
(Functionally identical)
Master Out only
Master In only
for details.
Comment
“SPI Data Modes and
for details.
240
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