AT88SA10HS

更新时间： 2024-02-08 10:54:20

品牌	Logo	应用领域
爱特美尔 - ATMEL		/
页数	文件大小	规格书
23页	584K
描述
CryptoAuthentication™ Host Security Chip

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技术参数
数据手册

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AT88SA10HS 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	SOT-23	包装说明：	TSSOP,
针数：	3	Reach Compliance Code：	unknown
HTS代码：	8542.31.00.01	风险等级：	5.82
Is Samacsys：	N	具有ADC：	NO
地址总线宽度：		DAC 通道：	NO
DMA 通道：	NO	外部数据总线宽度：
JESD-30 代码：	R-PDSO-G3	长度：	2.9 mm
I/O 线路数量：		端子数量：	3
最高工作温度：	85 °C	最低工作温度：	-40 °C
PWM 通道：	NO	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	认证状态：	Not Qualified
ROM可编程性：	FLASH	座面最大高度：	1.12 mm
最大供电电压：	5.25 V	最小供电电压：	2.7 V
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	0.95 mm	端子位置：	DUAL
宽度：	1.3 mm	uPs/uCs/外围集成电路类型：	MICROCONTROLLER
Base Number Matches：	1

AT88SA10HS 数据手册

AT88SA10HS Host Authentication Chip [Preliminary]

BurnSecure Enable

This fuse is used to prevent repetitive operation of the two personalization commands:

GenPersonalizationKey and BurnSecure. This fuse is always burned by the BurnSecure

command.

Secret Fuses

Status Fuses

These 64 fuses are used to augment the mask programmed keys stored in the chip by

Atmel. Knowledge of both the mask keys and the values of the Secret Fuses is required to

calculate the response value expected by HOST2. The BurnSecure command can be used

to burn an arbitrary selection of these 64 bits.

These 23 fuses should be used to store information which is not secret, as their value can

always be determined using the Read command. Typical usage would be model or

configuration information. They cannot be automatically included in the messages to be

hashed by the HOST commands, but the system may read them and pass them back to

HOST1 in the input stream if desired.

Fuse Enable

This fuse is used to prevent access to fuses on chips in which a partial set of fuses has

been burned. This fuse must be burned using the BurnSecure command.

1.3.

Chip Identification

The chip includes a total of 72 bits of information that can be used to distinguish between individual chips in a reliable

manner. The information is distributed between the ROM and fuse blocks in the following manner.

Serial Number

This 48 bit value is composed of ROM SN (16 bits) and Fuse SN (32 bits). Together they form a

serial number that is guaranteed to be unique for all devices ever manufactured within the

CryptoAuthentication family. This value is optionally included in the MAC calculation.

Manufacturing ID This 24 bit value is composed of ROM MfrID (16 bits) and Fuse MfrID (8 bits). Typically this value

is the same for all chips of a given type. It is always included in the cryptographic computations.

1.4.

Key Values

The values stored in the AT88SA10HS internal key array are hardwired into the masking layers of the chip during wafer

manufacture. All chips have the same keys stored internally, though the value of a particular key cannot be determined

externally from the chip. For this reason, customers should ensure that they program a unique (and secret) number into

the 64 secret fuses and they should store the Atmel provided key values securely.

Individual key values are made available to qualified customers upon request to Atmel and are always transmitted in a

secure manner.

When the serial number is included in the MAC calculation, the response is considered to be diversified and the host

needs to know the base secret in order to be able to verify the authenticity of the client. A diversified response can also

be obtained by including the serial number in the computation of the value written to the secret fuses. The Atmel

AT88SA10HS provides a secure hardware mechanism to validate responses to determine if they are authentic.

1.5.

SHA-256 Computation

The AT88SA10HS performs only one cryptographic calculation – a keyed digest of an input challenge. It optionally

includes various other information stored on the chip within the digested message.

The AT88SA10HS computes the SHA-256 digest based on the algorithm documented here:

http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf

As a security measure, the 24 bit MfrID code (both ROM and Fuse bits) is automatically included in every message

digested by the AT88SA10HS. The secret fuses are conditionally appended, depending on the parameters to the

HOST command.

For complete sample calculations, refer to”AT88SA100S” and/or “AT88SA102S” Datasheets.

8595B–SMEM–09/09

1 234 5 6 7...23

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与AT88SA10HS相关器件

型号	品牌	描述	获取价格	数据表
AT88SA10HS_10	ATMEL	Atmel CryptoAuthentication Host Security Chip	获取价格
AT88SA10HS_11	ATMEL	Atmel CryptoAuthentication Host Security Chip	获取价格
AT88SA10HS-SH-T	ATMEL	Atmel CryptoAuthentication Host Security Chip	获取价格
AT88SA10HS-TH-T	ATMEL	Atmel CryptoAuthentication Host Security Chip	获取价格
AT88SA10HS-TSU-T	ATMEL	Atmel CryptoAuthentication Host Security Chip	获取价格
AT88SC0104C	ATMEL	CRYPTOMEMORY 1KBIT	获取价格

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