SCS152-IS

更新时间： 2024-09-24 22:22:15

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
16页	167K
描述
KEELOQ Token Card Chip

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

SCS152-IS 数据手册

SCS152

Token Card Chip

FEATURES

DIE LAYOUT

• ISO 7816-3:1989 “Answer to Reset” compatible

for synchronous cards

GND

VDD

• Industry standard 4406 command set compatible

• Extended commands:

SCI

- Combined WRITE and

ERASE-WITH-CARRY function

SDIO

SCK

- Cryptographic signature of the EEPROM

contents and challenge

• 40-bit user programmable area with lock bit

• 64-bit cryptographic key

• 64-bit transport code

• 33352 token units (78888 )

• Internal protection against token counter value

corruption (anti-tearing)

BLOCK DIAGRAM

ADDRESS

GENERATION

DESCRIPTION

EEPROM

The SCS152 is a third generation token card integrated

circuit intended for prepaid applications. Typical appli-

cations of the SCS152 include disposable telephone

cards, vending machine cards, low value debit cards,

access control, and authentication.

VDD

GND

SIGNATURE

CALCULATOR

I/O

SDIO

The SCS152 incorporates several security features,

including an internal signature function and a long

transport code. The SCS152 has two modes – issuer

mode and user mode. During wafer testing, it is placed

in issuer mode for card manufacturing and transporta-

tion to the issuer. In issuer mode, the transport code is

needed to program the device and, thus, is protected

from unauthorized use before personalization by the

issuer.

SCI

CONTROLLER

SCK

A correct signature indicates that the memory contents

have not been altered. It can therefore be used to check

the serial number, or that changes to the token counter

have actually occurred.

During personalization, a cryptographic key, unique to

the card, is programmed into EEPROM. This key can

not be read.The system using the card must be able to

determine what key was programmed from examining

the memory map (i.e., not the token counter) containing

the issuer and serial number information.

Programming the token counter uses a special circuit to

ensure that the programming will either be complete or

will not happen at all, if the external supply is suddenly

removed.* This is called Fail Safe Programming™,

and, when used in conjunction with the extended write

and erase command, removes the need for special

‘tear-out’ protection to be performed by the reader.

The signature function computes an 8-bit value based

on a system supplied value (challenge) and the visible

memory map. Because of the nature of the signature

function and the fact that the key is not known outside

the system, it is practically impossible to predict the

value which the signature will compute.

Note: The fail safe feature only works in the token

counter area.

KEELOQ is a registered trademark of Microchip Technology Inc.

*Patents applied for.

1997 Microchip Technology Inc.

Preliminary

DS40150B-page 1

12 3 4 5 6 7...16

中文翻译

下载PDF

与SCS152-IS相关器件

型号	品牌	获取价格	描述	数据表
SCS152-IW	MICROCHIP	获取价格	KEELOQ Token Card Chip
SCS152-IWF	MICROCHIP	获取价格	KEELOQ Token Card Chip
SCS157V	SECOS	获取价格	0.35Amp 40V Low Vf Schottky Barrier Rectifiers
SCS160P	WILLAS	获取价格	VOLTAGE 20V ~ 100V 1.0AMP Schottky Barrier Rectifiers
SCS160P	SECOS	获取价格	Schottky Barrier Rectifiers
SCS160V	SECOS	获取价格	Schottky Barrier Rectifiers
SCS160V_09	SECOS	获取价格	Schottky Barrier Rectifiers
SCS16DSTL	SECOS	获取价格	0.15A , 75V Plastic-Encapsulated Switching Diode
SCS179W	SECOS	获取价格	Surface Mount Switching Diode
SCS179W_15	SECOS	获取价格	Surface Mount Switching Diode

与SCS152-IS相关文章

塔塔电子与力积电达成技术转让协议，携手建设印度首座晶圆厂
2024-09-29

6
英特尔震撼发布：128核心256线程的至强6性能核处理器
2024-09-29

8
SK海力士量产12层HBM3E，容量高达36GB
2024-09-27

11
意法半导体传感器驱动Sphere，开启沉浸式电影新时代
2024-09-27

17

产品中心

服务支持

精选活动

关于我们

帮助中心

SCS152-IS

SCS152-IS 数据手册

与SCS152-IS相关器件

与SCS152-IS相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

SCS152-IS

SCS152-IS 数据手册

与SCS152-IS相关器件

与SCS152-IS相关文章

您还可以找

您在本页遇到什么问题？