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Maxim > 方案 > 安全系统

用户认证

Dallas的SHA iButton可用于多种系统：eCash支付、售货机、收费系统、用户认证等。

数据资料
显示 标题/型号 关键优势
QV  PDF 1024位EEPROM iButton
DS1972

EPROM仿真模式，用于保护数据不被意外擦除
QV  PDF 单芯片、256k位非易失SRAM
DS2030AB, DS2030Y
QV  PDF 密码保护的32K字节EEPROM iButton
DS1977
QV  PDF iButton塑料卡安装件
DS9093RA, DS9093RB
QV    带有SHA-1引擎的1k位EEPROM iButton
DS1961S

具有世界级安全性的、不锈钢封装，用于访问控制和电子货币应用
QV    SHA iButton
DS1963S



Key Specifications:   iButton Mounting Options
Part Number Overview Features
DS9093RA  DS9093RA
Lock Ring Washer
•F5 Package Compatible
•Metal
•Metal Part
•Plastic Card Mounts
DS9093RB  DS9093RB
Flange Enlargement Washer
•F5 Package Compatible
•Metal Part
•Plastic Card Mounts
•Stainless
See All iButton Mounting Options (29)

Key Specifications:   iButton Products
Part Number Overview Memory Type Memory Size Security Features UniqueWare Real-Time Clock Features
DS1972 
iButton Memory 		EEPROM 1K bits  -  No No
•EPROM Emulation Mode
DS1961S 
Secure iButton 		EEPROM 1K bits SHA-1
Write-Only Secrets 		No No
•Monetary Ecash
DS1977 
iButton Memory 		EEPROM 32K Bytes Password Protected No No  - 
DS1963S 
Secure iButton 		NV SRAM 4Kbits SHA-1
Secure Coprocessor
Write Cycle Counters
Write-Only Secrets 		No No
•Monetary Ecash
See All iButton Products (25)

Key Specifications:   Memory (EPROM, EEPROM, ROM, NV SRAM)
Part Number Memory Type Memory Size Bus Type Real-Time Clock DIP with Internal Battery PowerCap Package Battery Monitor With GPIO Single Piece Module Features Supply Voltage (min) (V) Supply Voltage (max) (V)
DS2030AB  NV SRAM 32K x 8 Parallel No No No No No Yes
•µP Reset
 4.75 5.25
DS2030Y  NV SRAM 32K x 8 Parallel No No No No No Yes
•µP Reset
 4.5 5.5
See All Memory (EPROM, EEPROM, ROM, NV SRAM) (69)


         


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