ATMEGA128RFA1-ZUR Atmel, ATMEGA128RFA1-ZUR Datasheet - Page 95
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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9.8.8.3 Security Key Setup
9.8.8.4 Security Operation Modes
9.8.8.4.1 Electronic Code Book (ECB)
8266B-MCU Wireless-03/11
The key is stored in a 16 Byte sequential buffer. To read or write the contents of the
buffer, 16 consecutive read or write operations to the AES_KEY register are required.
A 16-folded read access to registers AES_KEY returns the last round key of the
preceding security operation. This is the key required for the corresponding ECB
decryption operation after an ECB encryption operation. However the initial AES key
written to the security module in advance of an AES run (see step 1 in
page 94) is not modified during an AES operation. This initial key is used for the next
AES run although it cannot be read from AES_KEY.
Before accessing the Key Buffer it must be ensured, that the internal address counter is
initialized correctly. This is the cases after Radio Transceiver Reset (see
Transceiver Pin Register on page
operation. After an interrupted buffer read or write access, Address pointer
reinitialization is recommended by a simple read access to the AES_CTRL register.
ECB is the basic operating mode of the security module and is configured by the
AES_CTRL register. The bit AES_MODE = 0 defines the ECB mode and bit AES_DIR
selects the direction to either encryption or decryption. The data to be processed has to
be written to registers AES_STATE.
A security operation can be started by writing the start command AES_REQUEST = 1
(AES_CTRL register).
The ECB encryption operation is illustrated in
96 shows the ECB decryption mode which is supported in a similar way.
Figure 9-35. ECB Mode - Encryption
Note:
Encryption
1. ECB decryption is not required for IEEE 802.15.4 or ZigBee security processing.
Key
The radio transceiver provides this functionality as an additional feature.
Block Cipher
Encryption
Ciphertext
Plaintext
170) or a completed AES Encryption/ Decryption
Encryption
Figure 9-35
Key
ATmega128RFA1
below.
Block Cipher
Encryption
Ciphertext
Plaintext
Figure 9-36 on
Table 9-25 on
TRXPR –
page
95
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