ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 151

• 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

11.5 128 kHz Internal Oscillator
11.6 External Clock
8266B-MCU Wireless-03/11
When this Oscillator is used as the chip clock, the Watchdog Oscillator will still be used
for the Watchdog Timer and for the Reset Time-out. For more information on the pre-
programmed calibration value, see the section
Table 11-3. Internal Calibrated RC Oscillator Operating Modes
When this Oscillator is selected, start-up times are determined by the SUT Fuses as
shown in the following table.
Table 11-4. Start-up times for the internal calibrated RC Oscillator clock selection
The 128 kHz Internal Oscillator is an ultra-low power RC oscillator providing a clock of
approximate 128 kHz nominal frequency. This clock may be selected as the system
clock by programming the CKSEL Fuses to “0011” as shown in the following table.
Table 11-5. 128 kHz Internal Oscillator Operating Modes
When this clock source is selected, start-up times are determined by the SUT Fuses as
shown in the following table.
Table 11-6. Start-up Times for the 128 kHz Internal Oscillator
To drive the device from an external clock source, CLKI should be used as shown in
Figure 11-2 on
must be programmed to “0000”.
Frequency Range (MHz)
9.6 ... 22.4
Notes:
Power Conditions
BOD enabled
Fast rising power
Slowly rising power
Notes:
Nominal Frequency
128 kHz
Notes:
Power Conditions
BOD enabled
Fast rising power
Slowly rising power
1. Note that the 128 kHz oscillator is a very low power clock source, and is not
1. The device is shipped with this option selected.
1. The device is shipped with this option selected
designed for high accuracy
page 152. To run the device on an external clock, the CKSEL Fuses
Start-up Time from Power-
down and Power-save
6 CK
6 CK
6 CK
Start-up Time from Power-down
and Power-save
6 CK
6 CK
6 CK
Reserved
Reserved
CKSEL3:0
0010
CKSEL3:0
0011
"Calibration Byte" on page
ATmega128RFA1
Additional Delay from
Reset
14CK
14CK + 4.0 ms
14CK + 64 ms
(1)
Additional Delay from
Reset
14CK
14CK + 4.1 ms
14CK + 64 ms
(1)(2)
(1)
468.
SUT1:0
00
01
10
11
SUT1:0
00
01
10
11
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