参数资料
型号: AT86RF212-ZUR
厂商: Atmel
文件页数: 135/172页
文件大小: 0K
描述: TXRX AVR LOW PWR/VOLTAGE 32PQFN
标准包装: 1
频率: 700MHz,800MHz,900MHz
数据传输率 - 最大: 250kbps
调制或协议: 802.15.4 Zigbee,6LoWPAN,ISM
应用: ISM,ZigBee?
功率 - 输出: 10dBm
灵敏度: -110dBm
电源电压: 1.8 V ~ 3.6 V
电流 - 接收: 9.2mA
电流 - 传输: 25mA
数据接口: PCB,表面贴装
天线连接器: PCB,表面贴装
工作温度: -40°C ~ 85°C
封装/外壳: 32-VFQFN 裸露焊盘
包装: 标准包装
其它名称: AT86RF212-ZURDKR
AT86RF212
When decrypting, due to the nature of AES algorithm, the initial key to be used is not
the same as the one used for encryption, but rather the last round key instead. This last
round key is the content of the key address space stored after running one full
encryption cycle and must be saved for decryption. If the decryption key has not been
saved, it has to be recomputed by first running a dummy encryption (of an arbitrary
plaintext) using the original encryption key, then fetching the resulting round key from
the key memory, and writing it back into the key memory as the decryption key.
ECB decryption is not used by either IEEE 802.15.4 or ZigBee frame security. Both of
these standards do not directly encrypt the payload, but rather a nonce instead, and
protect the payload by applying an XOR operation between the resulting (AES-) cipher
text and the original payload. As the nonce is the same for encryption and decryption,
only ECB encryption is required. Decryption is performed by XORing the received
cipher text with its own encryption result, which results in the original plaintext payload
upon success.
9.1.4.2 Cipher Block Chaining (CBC)
In CBC mode, the result of a previous AES operation is XORed with the new incoming
vector forming the new plaintext to encrypt, see Figure 9-4. This mode is used for the
computation of a cryptographic checksum (message integrity code, MIC).
Figure 9-4. CBC Mode - Encryption
After preparing the AES key and defining the AES operation direction using SRAM
register bit AES_DIR, the data has to be provided to the AES engine and the CBC
operation can be started.
The first CBC run has to be configured as ECB to process the initial data (plaintext
XORed with an initialization vector provided by the microcontroller). All succeeding AES
runs are to be configured as CBC by setting register bits AES_MODE = 0x2 (register
0x83, AES_CTRL). Register bit AES_DIR (register 0x83, AES_CTRL) must be set to
AES_DIR = 0 to enable AES encryption. The data to be processed has to be
transferred to the SRAM starting with address 0x84 to 0x93 (register AES_STATE).
Setting register bit AES_REQUEST = 1 (register 0x94, AES_CTRL_MIRROR), as
described in section 9.1.4, starts the first encryption within one SRAM access. This
causes the next 128 bits of plaintext data to be XORed with the previous cipher text
data, see Figure 9-4.
According to IEEE 802.15.4, the input for the very first CBC operation has to be
prepared by XORing a plaintext with an initialization vector (IV). The value of the
135
8168C-MCU Wireless-02/10
相关PDF资料
PDF描述
AT86RF231-ZFR TXRX LOW POWER 2.4GHZ 32VQFN
AT86RF232-ZX 2.4 GHZ ZIGBEE TRANSCEIVER
AT88CK201BK BRD CRYPTORF READER AT88RF1354
AT88SC-ADK2 KIT ARIS+ DK CRYPTOMEM/COMPANION
AT88SC3216CRF-MY1 IC EEPROM 32KBIT 13MHZ TAG
相关代理商/技术参数
参数描述
AT86RF215IQ-ZU 功能描述:IC RF TXRX 802.15.4/ISM 48-VFQFN 制造商:microchip technology 系列:- 包装:托盘 零件状态:在售 类型:仅限 TxRx 射频系列/标准:802.15.4,通用 ISM < 1GHz 协议:- 调制:FSK,OFDM,O-QPSK 频率:389.5MHz ~ 510MHz,779MHz ~ 1.02GHz,2.4GHz 数据速率(最大值):2.4Mbps 功率 - 输出:16dBm 灵敏度:-123dBm 存储容量:- 串行接口:SPI 电压 - 电源:1.8 V ~ 3.6 V 电流 - 接收:5mA ~ 33mA 电流 - 传输:62mA ~ 64mA 工作温度:-40°C ~ 85°C 封装/外壳:48-VFQFN 裸露焊盘 标准包装:260
AT86RF215IQ-ZUR 功能描述:IC RF TXRX 802.15.4/ISM 48-VFQFN 制造商:microchip technology 系列:- 包装:剪切带(CT) 零件状态:在售 类型:仅限 TxRx 射频系列/标准:802.15.4,通用 ISM < 1GHz 协议:- 调制:FSK,OFDM,O-QPSK 频率:389.5MHz ~ 510MHz,779MHz ~ 1.02GHz,2.4GHz 数据速率(最大值):2.4Mbps 功率 - 输出:16dBm 灵敏度:-123dBm 存储容量:- 串行接口:SPI 电压 - 电源:1.8 V ~ 3.6 V 电流 - 接收:5mA ~ 33mA 电流 - 传输:62mA ~ 64mA 工作温度:-40°C ~ 85°C 封装/外壳:48-VFQFN 裸露焊盘 标准包装:1
AT86RF215M-ZU 功能描述:IC RF TxRx Only General ISM < 1GHz 389.5MHz ~ 510MHz, 779MHz ~ 1.02GHz 48-VFQFN Exposed Pad 制造商:atmel 系列:- 包装:托盘 零件状态:有效 类型:仅限 TxRx 射频系列/标准:通用 ISM < 1GHz 协议:- 调制:FSK,OFDM,O-QPSK 频率:389.5MHz ~ 510MHz,779MHz ~ 1.02GHz 数据速率(最大值):2.4Mbps 功率 - 输出:16dBm 灵敏度:-123dBm 存储容量:- 串行接口:SPI GPIO:- 电压 - 电源:1.8 V ~ 3.6 V 电流 - 接收:5mA ~ 33mA 电流 - 传输:62mA ~ 64mA 工作温度:-40°C ~ 85°C 封装/外壳:48-VFQFN 裸露焊盘 标准包装:416
AT86RF215M-ZUR 功能描述:IC RF TxRx Only General ISM < 1GHz 389.5MHz ~ 510MHz, 779MHz ~ 1.02GHz 48-VFQFN Exposed Pad 制造商:atmel 系列:- 包装:剪切带(CT) 零件状态:停产 类型:仅限 TxRx 射频系列/标准:通用 ISM < 1GHz 协议:- 调制:FSK,OFDM,O-QPSK 频率:389.5MHz ~ 510MHz,779MHz ~ 1.02GHz 数据速率(最大值):2.4Mbps 功率 - 输出:16dBm 灵敏度:-123dBm 存储容量:- 串行接口:SPI GPIO:- 电压 - 电源:1.8 V ~ 3.6 V 电流 - 接收:5mA ~ 33mA 电流 - 传输:62mA ~ 64mA 工作温度:-40°C ~ 85°C 封装/外壳:48-VFQFN 裸露焊盘 标准包装:1
AT86RF215-ZU 功能描述:IC RF TXRX 802.15.4/ISM 48-VFQFN 制造商:microchip technology 系列:- 包装:托盘 零件状态:在售 类型:仅限 TxRx 射频系列/标准:802.15.4,通用 ISM < 1GHz 协议:- 调制:FSK,OFDM,O-QPSK 频率:389.5MHz ~ 510MHz,779MHz ~ 1.02GHz,2.4GHz 数据速率(最大值):2.4Mbps 功率 - 输出:16dBm 灵敏度:-123dBm 存储容量:- 串行接口:SPI 电压 - 电源:1.8 V ~ 3.6 V 电流 - 接收:5mA ~ 33mA 电流 - 传输:62mA ~ 64mA 工作温度:-40°C ~ 85°C 封装/外壳:48-VFQFN 裸露焊盘 标准包装:260