参数资料
| 型号： | AT88SC3216C-SU |
| 厂商： | Atmel |
| 文件页数： | 14/21页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 32KBIT 1.5MHZ 8SOIC |
| 产品培训模块： | Crypto Products CryptoAuthentication™ Introduction |
| 标准包装： | 12,000 |
| 系列： | CryptoMemory® |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 32K (4K x 8) |
| 速度： | 5MHz |
| 接口： | I²C，2 线串口 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
12.
12.1.
Password Verification
Passwords may be used to protect read and/or write access of any user zone. When a valid password is presented, it
is memorized and active until power is turned off, unless a new password is presented or RST becomes active. There
are eight password sets that may be used to protect any user zone. Only one password is active at a time, but write
passwords give read access also.
Authentication Protocol
The access to a user zone may be protected by an authentication protocol. Any one of four keys may be selected to
use with a user zone.
The authentication success is memorized and active as long as the chip is powered, unless a new authentication is
initialized or RST becomes active. If the new authentication request is not validated, the card loses its previous
authentication and it should be presented again. Only the last request is memorized.
Note :
Password and authentication may be presented at any time and in any order. If the trials limit has been
reached (after four consecutive incorrect attempts), the password verification or authentication process will not
be taken into account.
Figure 13.
Password and Authentication Operations
Device (Card)
Host (Reader)
14
Card Number
VERIFY A
COMPUTE Challenge B
Challenge B
VERIFY RPW
DATA
Checksum (CS)
VERIFY WPW
VERIFY CS
Write DATA
AT88SC3216C
AUTHENTICATION
READ ACCESS
WRITE ACCESS
COMPUTE Challenge A
Challenge A
VERIFY B
Read Password (RPW)
VERIFY CS
Write Password (WPW)
DATA
CS
5014KS–SMEM–08/09
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PDF描述 |
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| AT88SC12816C-MJTG | CRYPTOMEM 128KBIT 16ZONE MODJ TW |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT88SC3216C-WI | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:CryptoMemory 32 Kbit |
| AT88SC3216C-Y4I | 制造商:Atmel Corporation 功能描述:CRYPTOMEMORY 8PIN SAP - Rail/Tube |
| AT88SC410 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:ASIC |
| AT88SC450 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:ASIC |
| AT88SC54C | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
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