ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 109
ATMEGA128RFA1-ZU
Manufacturer Part Number
ATMEGA128RFA1-ZU
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)
4.ATMEGA128RFA1-ZU.pdf
(524 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA128RFA1-ZU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATMEGA128RFA1-ZUR
Manufacturer:
ON
Quantity:
56 000
- ATMEGA128-16AU PDF datasheet
- ATAVR128RFA1-EK1 PDF datasheet #2
- ATAVR128RFA1-EK1 PDF datasheet #3
- ATMEGA128RFA1-ZU PDF datasheet #4
- Current page: 109 of 524
- Download datasheet (5Mb)
9.12.12 PHY_CC_CCA – Transceiver Clear Channel Assessment (CCA) Control Register
8266A-MCU Wireless-12/09
µs. For manually initiated ED measurements in these modes the measurement period is
still 128 µs as long as the receiver is in RX_ON state. A value other than 0xFF indicates
the result of the last ED measurement.
Table 9-41 ED_LEVEL Register Bits
This register is provided to initiate and control a CCA measurement.
• Bit 7 – CCA_REQUEST - Manual CCA Measurement Request
A manual CCA measurement is initiated with setting CCA_REQUEST=1. The end of
the CCA measurement is indicated by the TRX24_CCA_ED_DONE interrupt. Register
bits CCA_DONE and CCA_STATUS of register TRX_STATUS are updated after a
CCA_REQUEST. The register bit is automatically cleared after requesting a CCA
measurement with CCA_REQUEST=1.
• Bit 6:5 – CCA_MODE1:0 - Select CCA Measurement Mode
The CCA mode can be selected using these register bits. Note that IEEE 802.15.4-
2006 CCA Mode 3 defines the logical combination of CCA Mode 1 and 2 with the
logical operators AND or OR. This can be selected with CCA_MODE=0 for logical
operation OR and CCA_MODE=3 for logical operation AND.
Table 9-42 CCA_MODE Register Bits
• Bit 4:0 – CHANNEL4:0 - RX/TX Channel Selection
These register bits define the RX/TX channel. The channel assignment is according to
IEEE 802.15.4.
Bit
NA ($148)
Read/Write
Initial Value
Bit
NA ($148)
Read/Write
Initial Value
Register Bits
ED_LEVEL7:0
Register Bits
CCA_MODE1:0
CCA_REQUEST
CHANNEL3
RW
RW
7
0
3
1
CCA_MODE1
CHANNEL2
RW
RW
6
0
2
0
Value
Value
0x00
0x01
0x02
0x54
0xFF
0
1
2
3
CCA_MODE0
CHANNEL1
Description
Minimum result of last ED measurement
P(RF) = RSSI_BASE_VAL+ED [dBm]
...
Maximum result of last ED measurement
Reset value
Description
Mode 3a, Carrier sense OR energy above
threshold
Mode 1, Energy above threshold
Mode 2, Carrier sense only
Mode 3b, Carrier sense AND energy above
threshold
RW
RW
5
1
1
1
ATmega128RFA1
CHANNEL4
CHANNEL0
RW
RW
4
0
0
1
PHY_CC_CCA
PHY_CC_CCA
109
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