ATMEGA128RFA1-ZUR Atmel, ATMEGA128RFA1-ZUR Datasheet - Page 79
ATMEGA128RFA1-ZUR
Manufacturer Part Number
ATMEGA128RFA1-ZUR
Description
IC AVR MCU 2.4GHZ XCEIVER 64QFN
Manufacturer
Atmel
Series
ATMEGAr
Datasheets
1.ATMEGA128-16AU.pdf
(385 pages)
2.ATAVR128RFA1-EK1.pdf
(13 pages)
3.ATAVR128RFA1-EK1.pdf
(555 pages)
Specifications of ATMEGA128RFA1-ZUR
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
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA128RFA1-ZUR
Manufacturer:
ON
Quantity:
56 000
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9.6.3.2 User accessible Frame Content
Figure 9-31. Transceiver Frame Structure
Frame
Duration
Access
8266B-MCU Wireless-03/11
0
Preamble Sequence
SHR not accesible
4 octets / 128 µs
PHY generated
Length [octets]
Alternatively Dynamic Frame Buffer Protection can be used to protect received frames
against overwriting. For details refer to
Both procedures do not protect the Frame Buffer from overwriting by the application
software.
In Extended Operating Mode during TX_ARET operation (see
Transmit with Automatic Retry and CSMA-CA Retry" on page
switches to receive if an acknowledgement of a previously transmitted frame was
requested. During this period received frames are evaluated but not stored in the Frame
Buffer. This allows the radio transceiver to wait for an acknowledgement frame and
retry the frame transmission without writing the frame data to the Frame Buffer again.
A radio transceiver state change except a transition to radio transceiver SLEEP state or
a radio transceiver RESET does not affect the Frame Buffer content. The Frame Buffer
is powered off and the stored data gets lost if the radio transceiver is forced into radio
transceiver SLEEP state.
Access conflicts may occur when reading and writing data simultaneously at the two
independent ports of the Frame Buffer TX/RX BBP and Controller interface.
The radio transceiver supports an IEEE 802.15.4 compliant frame format as shown in
the following figure.
A frame comprises two sections. The radio transceiver internally generated SHR field
and the user accessible part are stored in the Frame Buffer. The SHR contains the
preamble and the SFD field. The variable frame section contains the PHR and the
PSDU including the FCS (see
The Frame Buffer content differs depending on the direction of the communication
(receive or transmit). To access the data follow the procedures described in
Transceiver Usage" on page
During frame reception, the payload and the link quality indicator (LQI) value of a
successfully received frame are stored in the Frame Buffer. The radio transceiver
appends the LQI value to the frame data after the last received octet. Information of the
frame length is not stored in the Frame Buffer. The frame length information is located
in register TST_RX_LENGTH.
The SHR (except the SFD used to generate the last octet of the SHR) can generally not
be read by the application software.
Notes:
4
1. Stored into Frame Buffer for TX operation
2. Stored into Frame Buffer during frame reception.
SFD
1
5
PHR
(1)
6
84.
"Overview" on page
TX: Frame Buffer content
"Dynamic Frame Buffer Protection" on page
Payload
y octets / y • 32 µs (y <= 128)
RX: Frame Buffer content
67).
ATmega128RFA1
y + 3
58) the radio transceiver
FCS
"TX_ARET_ON –
y + 5
LQI
1
(2)
y + 6
"Radio
92.
79
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