ATMEGA128RZBV-8AU Atmel, ATMEGA128RZBV-8AU Datasheet - Page 269
ATMEGA128RZBV-8AU
Manufacturer Part Number
ATMEGA128RZBV-8AU
Description
MCU ATMEGA1280/AT86RF230 100TQFP
Manufacturer
Atmel
Series
ATMEGAr
Datasheets
1.ATMEGA640V-8CU.pdf
(38 pages)
2.ATMEGA640V-8CU.pdf
(444 pages)
3.AT86RF230-ZU.pdf
(98 pages)
Specifications of ATMEGA128RZBV-8AU
Frequency
2.4GHz
Data Rate - Maximum
2Mbps
Modulation Or Protocol
802.15.4 Zigbee
Applications
General Purpose
Power - Output
3dBm
Sensitivity
-101dBm
Voltage - Supply
1.8 V ~ 3.6 V
Data Interface
PCB, Surface Mount
Memory Size
128kB Flash, 4kB EEPROM, 8kB RAM
Antenna Connector
PCB, Surface Mount
Package / Case
100-TQFP
Wireless Frequency
2.4 GHz
Interface Type
JTAG, SPI
Output Power
3 dBm
For Use With
ATAVRISP2 - PROGRAMMER AVR IN SYSTEMATSTK501 - ADAPTER KIT FOR 64PIN AVR MCUATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Operating Temperature
-
Current - Transmitting
-
Current - Receiving
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
ATmega128
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- Download datasheet (10Mb)
23.9.5
23.9.6
2549M–AVR–09/10
TWAR – TWI (Slave) Address Register
TWAMR – TWI (Slave) Address Mask Register
• Bits 7:0 – TWD: TWI Data Register
These eight bits constitute the next data byte to be transmitted, or the latest data byte received
on the 2-wire Serial Bus.
The TWAR should be loaded with the 7-bit Slave address (in the seven most significant bits of
TWAR) to which the TWI will respond when programmed as a Slave Transmitter or Receiver,
and not needed in the Master modes. In multimaster systems, TWAR must be set in masters
which can be addressed as Slaves by other Masters.
The LSB of TWAR is used to enable recognition of the general call address (0x00). There is an
associated address comparator that looks for the slave address (or general call address if
enabled) in the received serial address. If a match is found, an interrupt request is generated.
• Bits 7:1 – TWA: TWI (Slave) Address Register
These seven bits constitute the slave address of the TWI unit.
• Bit 0 – TWGCE: TWI General Call Recognition Enable Bit
If set, this bit enables the recognition of a General Call given over the 2-wire Serial Bus.
• Bits 7:1 – TWAM: TWI Address Mask
The TWAMR can be loaded with a 7-bit Slave Address mask. Each of the bits in TWAMR can
mask (disable) the corresponding address bit in the TWI Address Register (TWAR). If the mask
bit is set to one then the address match logic ignores the compare between the incoming
address bit and the corresponding bit in TWAR.
detail.
Figure 23-22. TWI Address Match Logic, Block Diagram
Bit
(0xBA)
Read/Write
Initial Value
Bit
(0xBD)
Read/Write
Initial Value
TWAMR0
Address
TWAR0
Bit 0
TWA6
R/W
R/W
7
1
7
0
TWA5
R/W
R/W
6
1
6
0
Address Bit Comparator 6..1
ATmega640/1280/1281/2560/2561
TWA4
R/W
R/W
Address Bit Comparator 0
5
1
5
0
TWAM[6:0]
TWA3
R/W
R/W
4
1
4
0
Figure 23-22
TWA2
R/W
R/W
3
1
3
0
TWA1
R/W
R/W
shows the address match logic in
2
1
2
0
TWA0
R/W
R/W
1
1
1
0
TWGCE
R/W
Address
R
Match
0
0
0
–
0
TWAMR
TWAR
269
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