Datasheet > V4070

V4070

更新时间： 2024-11-14 03:21:19

品牌	Logo	应用领域
EMMICRO		装置
页数	文件大小	规格书
9页	171K
描述
Crypto Contactless Identification Device

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中文翻译

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数据手册

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V4070 数据手册

EM MICROELECTRONIC-MARIN SA

V4070

Crypto Contactless Identification Device

Features

Typical Operating Configuration

•

On Chip Crypto-Algorithm

Two Way Authentication protocol

96 bits of Secret-Key in EEPROM (unreadable)

32 bits of fix Device Identification

30 bits of USER_MEMORY (UM) with read

access (OTP)

Secret-Key programmable via CID-Interface

Lock-Bits to inhibit programming

Data Transmission performed by Amplitude

Modulation

Coil 1

V4070

•

Coil 2

•

Bit Period = 32 periods of carrier frequency

200 pF on chip Resonant Capacitor (untrimmed)

-40 to +85°C Temperature range

115 kHz TO 135 kHz Field Frequency

On chip Rectifier and Voltage Limiter

No external supply buffer capacitance needed

due to low power consumption

Typical value of inductance at 125 KHz is 8 mH

Figure 1

Description

Pin Assignment

The V4070 is a CMOS integrated circuit intended for

use in electronic Read/Write RF Transponders. The

chip contains an implementation of a crypto-algorithm

with 96 Bits of user configurable secret-key contained

in EEPROM. It also provides a unique Device Identi-

fication of 32 Bits that can never be modified as well

as 30 Bits of freely programmable USER-MEMORY.

Bits 15 and 14 of word 1 are used as Lock-Bits. The

memory can only be accessed for writing or erasing if

these two bits have the contents «10» as when they

are delivered.

COIL 1

COIL 2

V4070

The V4070 transmits data to the transceiver by modu-

lating the amplitude of the electromagnetic field, and

receives data and commands in a similar way.

The coil of the tuned circuit is the only external com-

ponent required, all remaining functions are integrated

in the chip.

COIL1

COIL2

coil terminal / clock input

coil terminal

Figure 2

Applications

•

High security automotive immobilizer

High security hands-free access control

12 3 4 5 6 7...9

中文翻译

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