参数资料
| 型号： | AT88SA100S-TSU-T |
| 厂商： | Atmel |
| 文件页数： | 17/23页 |
| 文件大小： | 0K |
| 描述： | IC BATT AUTHENTICATION SOT23-3 |
| 产品培训模块： | CryptoAuthentication™ Introduction |
| 标准包装： | 1 |
| 系列： | CryptoAuthentication™ |
| 功能： | 电池验证 |
| 电源电压： | 2.7 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-236-3，SC-59，SOT-23-3 |
| 供应商设备封装： | SOT-3 |
| 包装： | 标准包装 |
| 其它名称： | AT88SA100S-TSU-TDKR |
6.5
LoadSram
Writes 256-bits into the battery backed SRAM and locks this memory against further modification. The value in the battery
backed SRAM cannot be read, it must be verified via the MAC command. If the secret value in the SRAM is already valid then
this command will fail with an error response. The only way to unlock the SRAM is to remove power from the AT88SA100S.
The input data (secret key) is always decrypted using the decryption digest previously generated by GenPersonalizationKey
prior to being written into the battery backed SRAM.
Note:
Both the GenPersonalizationKey and LoadSram commands must be run consecutively within a single Wake
cycle prior to the expiration of the watchdog timer. If any command is inserted between these two operations
then LoadSram will fail.
Table 6-11. Input Parameters
Name
Size
Notes
Opcode
Param1
Param2
Data
LOADSRAM
Zero1
Zero2
Key
1
1
2
32
0x10
Must be 0x00
Must be 0x0000
Encrypted value to be written into the SRAM
Table 6-12. Output Parameter
Name
Success
Size
1
Notes
Upon successful execution, a value of 0 will be returned by the AT88SA100S chip
The AT88SA100S chip executes the following sequence on receipt of this command.
1.
2.
3.
4.
If the internal flag (indicating that a personalization key has been loaded) is not set, then return error. If the
MemValid flag is set, return error
Successively XOR each byte in the data (secret key) parameter with the corresponding byte from the personalization
key generated by GenPersonalizationKey
Transfer the resulting bytes to the battery backed SRAM
Set MemValid (internal flag) to one
17
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT88SA102S | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:CryptoAuthentication |
| AT88SA102S_10 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Atmel CryptoAuthentication |
| AT88SA102S_11 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Atmel CryptoAuthentication Product Authentication Chip |
| AT88SA102S-SH-T | 功能描述:序列号注册 Product Auth. IC CryptoAuth SHA-256 RoHS:否 制造商:Maxim Integrated 数据总线宽度: 电源电压-最大: 电源电压-最小: 最大工作温度: 最小工作温度: 安装风格: 封装 / 箱体: |
| AT88SA102S-TH-T | 功能描述:序列号注册 58951-Eb CryptoAuth SHA-256 GRN RoHS:否 制造商:Maxim Integrated 数据总线宽度: 电源电压-最大: 电源电压-最小: 最大工作温度: 最小工作温度: 安装风格: 封装 / 箱体: |
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