EM4069A5CI2LC 데이터 시트보기 (PDF) - EM Microelectronic - MARIN SA

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EM4069A5CI2LC

128 bit Read/Write Contactless Identification Device with OTP function

EM Microelectronic - MARIN SA 

EM4069

EM4169

Timing Characteristics

VDD = 3.0 V, VSS = 0 V, fCOIL1 = 125 kHz square wave, VCOIL1 = 5V, TOP = 25°C, unless otherwise specified

Parameter

Option : 64 RF periods per bit

Read bit period

EEPROM write time

Synchronization pattern phase 1

Synchronization pattern phase 2

Synchronization pattern phase 3

Symbol Condition

tRDB

tWee

tS1

tS2

tS3

Min. Typ.

64

20

4.1

1.5

1.5

Max.

5.0

2.0

4.0

Unit

RF periods

ms

ms

ms

ms

Option : 32 RF periods per bit

Read bit period

tRDB

EEPROM write time

tWee

Synchronization pattern phase 1

tS1

Synchronization pattern phase 2

tS2

Synchronization pattern phase 3

tS3

32

20

2.1

0.8

0.8

RF periods

ms

2.5

ms

1.0

ms

2.0

ms

RF periods represent periods of the carrier frequency emitted by the transceiver unit.

See figure 12 for Synchronization pattern phases.

Due to amplitude modulation of the coil-signal, the clock-extractor may miss clocks or add spurious clocks close to

the edges of the RF-envelope. This desynchronization will not be larger than ± 3 clocks per bit and must be taken into

account when developing reader software.

Block Diagram

COIL1

CR

VSS

Clock

Extractor

Sequencer

Data

Extractor

VDD

Modulator

Power

Supply

Cbuf

VSS

Power on

Reset

Reset

Control

Logic

EEPROM

ROM

Fig. 3

Copyright  2003, EM Microelectronic-Marin SA

3

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