- 您现在的位置：买卖IC网 > Sheet目录313 > AT88SC3216C-MJ (Atmel)IC EEPROM 32KBIT 1.5MHZ M2J
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
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
AT88SC6416C-MJ
IC EEPROM 64KBIT 1.5MHZ M2J
AT91EB40A
KIT EVAL FOR ARM AT91R40008
AT91EB42
KIT EVAL FOR ARM AT91M42800A
AT91EB55
KIT EVAL FOR ARM AT91M55800A
AT91SAM-ICE
EMULATOR FOR AT91 ARM7/ARM9
AT91SAM7A3-EK
KIT EVAL FOR AT91SAM7A3
AT91SAM7L-STK
KIT EVAL FOR AT91SAM7L
AT91SAM7S-EK
KIT EVAL FOR ARM AT91SAM7S
相关代理商/技术参数
AT88SC3216C-MJTG
功能描述:电可擦除可编程只读存储器 CRYPTOMEMORY 32KBIT 16 ZONE RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
AT88SC3216C-PI
功能描述:电可擦除可编程只读存储器 32k bit RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
AT88SC3216C-PU
功能描述:电可擦除可编程只读存储器 CRYPTOMEMORY 32kB 16 ZONE - 8 IND TEMP RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
AT88SC3216CRF
制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:CryptoRF Specification
AT88SC3216CRF_09
制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:13.56 MHz CryptoRF? EEPROM Memory 32 Kbits
AT88SC3216CRF-L01B
制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:13.56 MHz CryptoRF EEPROM Memory 32 Kbits
AT88SC3216CRF-MR1
功能描述:电可擦除可编程只读存储器 CRYPTORF 32K, 82pF RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
AT88SC3216CRF-MS1
制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:13.56 MHz CryptoRF EEPROM Memory 32 Kbits