ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 168

• Manufacturer Part Number: ATMEGA128RFA1-ZU
• Description: IC AVR MCU 2.4GHZ XCEIVER 64QFN
• Manufacturer: Atmel
• Series: ATMEGAr

Specifications of ATMEGA128RFA1-ZU

• Frequency: 2.4GHz
• Data Rate - Maximum: 2Mbps
• Modulation Or Protocol: 802.15.4 Zigbee
• Applications: General Purpose
• Power - Output: 3.5dBm
• Sensitivity: -100dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Receiving: 12.5mA
• Current - Transmitting: 14.5mA
• Data Interface: PCB, Surface Mount
• Memory Size: 128kB Flash, 4kB EEPROM, 16kB RAM
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-VFQFN, Exposed Pad
• Rf Ic Case Style: QFN
• No. Of Pins: 64
• Supply Voltage Range: 1.8V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• Processor Series: ATMEGA128x
• Core: AVR8
• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 128 KB
• Data Ram Size: 16 KB
• Interface Type: JTAG
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 38
• Number Of Timers: 6
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVR128RFA1-EK1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

12.6.3 PRR1 – Power Reduction Register 1
12.6.4 PRR2 – Power Reduction Register 2
168
ATmega128RFA1
• Bit 7 – Res - Reserved Bit
This bit is reserved for future use. A read access always will return zero. A write access
does not modify the content.
• Bit 6 – PRTRX24 - Power Reduction Transceiver
Writing a logic one to this bit shuts down the transceiver (disconnect from the power
supply). In power-down and power-save modes the power-chain will be disabled when
this bit is one. Writing a logic zero to this bit will re-enable the transceiver.
• Bit 5 – PRTIM5 - Power Reduction Timer/Counter5
Writing a logic one to this bit shuts down the Timer/Counter5 module. When the
Timer/Counter5 is enabled, operation will continue like before the shutdown.
• Bit 4 – PRTIM4 - Power Reduction Timer/Counter4
Writing a logic one to this bit shuts down the Timer/Counter4 module. When the
Timer/Counter4 is enabled, operation will continue like before the shutdown.
• Bit 3 – PRTIM3 - Power Reduction Timer/Counter3
Writing a logic one to this bit shuts down the Timer/Counter3 module. When the
Timer/Counter3 is enabled, operation will continue like before the shutdown.
• Bit 0 – PRUSART1 - Power Reduction USART1
Writing a logic one to this bit shuts down the USART1 by stopping the clock to the
module. When waking up the USART1 again, the USART1 should be reinitialized to
ensure proper operation.
The Power Reduction Register PRR2 allows to individually disable all four SRAM
blocks. Setting any PRRAM3:0 bit to one will completely switch off (disconnect from the
power supply) the corresponding SRAM block. This enables the application to disable
unused SRAM memory to save power. Every SRAM block can be re-enabled by
reseting the appropriate PRRAM3:0 bit.
• Bit 7:4 – Res3:0 - Reserved Bit
This bit is reserved for future use. A read access always will return zero. A write access
does not modify the content.
• Bit 3 – PRRAM3 - Power Reduction SRAM 3
Setting this bit to one will disable the SRAM block 3. Setting this bit to zero will enable
the SRAM block 3.
Bit
NA ($65)
Read/Write
Initial Value
Bit
NA ($63)
Read/Write
Initial Value
Res3
Res
R
7
0
R
7
0
PRTRX24 PRTIM5
Res2
RW
R
6
0
6
0
Res1
RW
R
5
0
5
0
PRTIM4
Res0
RW
R
4
0
4
0
PRRAM3 PRRAM2 PRRAM1 PRRAM0
PRTIM3
RW
RW
3
0
3
0
RW
2
2
0
1
RW
1
0
8266A-MCU Wireless-12/09
PRUSART1
RW
RW
0
0
0
0
PRR2
PRR1