ATMEGA128RFA1-ZUR Atmel, ATMEGA128RFA1-ZUR Datasheet - Page 78
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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Figure 9-22. TX Power Ramping
9.6.3 Frame Buffer
9.6.3.1 Data Management
78
TRX_STATE
SLPTR
PA buffer
PA
M odulation
ATmega128RFA1
PLL_O N
0
2
When using an external RF front-end (refer to
required to adjust the startup time of the external PA relative to the internal building
blocks to optimize the overall PSD. This can be achieved using register bits
PA_BUF_LT and PA_LT of register PHY_TX_PWR.
The radio transceiver contains a 128 byte dual port SRAM. One port of the frame buffer
is directly connected to the controller I/O space. Therefore random access to single
frame bytes is possible. The other port connects to the internal transmitter and receiver
modules. Both ports are independent and simultaneously accessible for data
communication.
The Frame Buffer uses the controller I/O address space 0x180 to 0x1FF for RX and TX
operation of the radio transceiver and can keep one IEEE 802.15.4 RX or one TX frame
of maximum length at a time.
Frame Buffer access is only possible if the radio transceiver is enabled (PRTRX24 bit in
the Power Reduction Register PRR1 is not set) and not in SLEEP state.
Data in the Frame Buffer (received data or data to be transmitted) remain valid as long
as:
• No new frame or other data are written into the buffer;
• No new frame is received (in any BUSY_RX state);
• No state change into radio transceiver SLEEP state is made;
• No radio transceiver RESET (see bit TRXRST in
• Bit PRTRX24 in register
By default there is no protection of the Frame Buffer against overwriting. If a frame is
received during a Frame Buffer read access of a previously received frame, the stored
data might be overwritten.
Finally the application software should check the transferred frame data integrity by a
FCS check.
The state of the radio transceiver should be changed to PLL_ON state after reception to
protect the Frame Buffer content against overwriting with new, incoming frames. This
can be achieved by writing immediately the command PLL_ON to the TRX_CMD bits of
register TRX_STATE after receiving the frame indicated by a TRX24_RX_END
interrupt.
Register" on page
set;
4
6
170) or system reset took place;
8
"PRR1 – Power Reduction Register 1" on page 169
BU SY_TX
10
PA_BUF_LT
12
"RX/TX Indicator" on page
14
PA_LT
"TRXPR – Transceiver Pin
16
1 1
0
8266B-MCU Wireless-03/11
1
18
1
0 0
91) it may be
Length [µ s]
1
1
is not
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