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 Register Description
12.6.1 SMCR – Sleep Mode Control Register
12.6.2 PRR0 – Power Reduction Register0
168
ATmega128RFA1
The Sleep Mode Control Register contains control bits for power management.
• Bit 7:4 – Res3:0 - Reserved
• Bit 3:1 – SM2:0 - Sleep Mode Select bit 2
These bits select between the five available sleep modes. Standby modes are only
recommended for use with external crystals or resonators.
Table 12-4 SM Register Bits
• Bit 0 – SE - Sleep Enable
The SE bit must be written to logic one to make the MCU enter the sleep mode when
the SLEEP instruction is executed. To avoid the MCU entering the sleep mode unless it
is the programmers purpose, it is recommended to write the Sleep Enable (SE) bit to
one just before the execution of the SLEEP instruction and to clear it immediately after
waking up.
• Bit 7 – PRTWI - Power Reduction TWI
Writing a logic one to this bit shuts down the TWI by stopping the clock to the module.
When waking up the TWI again, the TWI should be re initialized to ensure proper
operation.
• Bit 6 – PRTIM2 - Power Reduction Timer/Counter2
Writing a logic one to this bit shuts down the Timer/Counter2 module. When the
Timer/Counter2 is enabled, operation will continue like before the shutdown.
Bit
$33 ($53)
Read/Write
Initial Value
Bit
NA ($64)
Read/Write
Initial Value
Register Bits
SM2:0
PRTWI
R/W
Res3
7
0
R
7
0
PRTIM2
R/W
Res2
6
0
R
6
0
PRTIM0
R/W
Res1
5
0
R
5
0
Value
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
PRPGA
R/W
Res0
4
0
R
4
0
PRTIM1
Description
Idle
ADC Noise Reduction (If Available)
Power Down
Power Save
Reserved
Reserved
Standby
Extended Standby
R/W
SM2
RW
3
0
3
0
PRSPI
R/W
SM1
2
0
RW
2
0
PRUSART0 PRADC
R/W
SM0
RW
1
0
1
0
8266B-MCU Wireless-03/11
RW
SE
R/W
0
0
0
0
SMCR
PRR0