ATmega128RZBV Atmel Corporation, ATmega128RZBV Datasheet - Page 225
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ATmega128RZBV
Manufacturer Part Number
ATmega128RZBV
Description
Manufacturer
Atmel Corporation
Specifications of ATmega128RZBV
Flash (kbytes)
128 Kbytes
Max. Operating Frequency
16 MHz
Max I/o Pins
86
Spi
5
Twi (i2c)
1
Uart
4
Adc Channels
16
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
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22.9.4
2549N–AVR–05/11
UCSRnC – USART Control and Status Register n C
• 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, that is,
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 – UMSELn1:0 USART Mode Select
These bits select the mode of operation of the USARTn as shown in
Table 22-4.
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
0
0
1
1
operation.
UMSELn1
UMSELn Bits Settings
“USART in SPI Mode” on page 232
R/W
7
0
UMSELn0
R/W
UMSELn0
6
0
0
1
0
1
ATmega640/1280/1281/2560/2561
UPMn1
R/W
5
0
UPMn0
R/W
4
0
for full description of the Master SPI Mode (MSPIM)
USBSn
R/W
3
0
Master SPI (MSPIM)
Asynchronous USART
UCSZn1
Synchronous USART
R/W
2
1
(Reserved)
Mode
Table
UCSZn0
R/W
1
1
22-4.
(1)
UCPOLn
R/W
0
0
UCSRnC
225
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