verysimple

verysimple



Low-cost & Simple SmartCard reader/writer

O


O


O


o


o


o


o


o-


Power Supply

78L05

n

'c Ł

<

GND

<

O

+

1N4148

1N4148

IVX|V\J

22uF


Reset


1


10k


4V7


>


74HC04


10k


74HC04


Data I/O


BC547


10k


1M


74HC04


3.57MHz — 33pF


T


X

74HC04


X

74HC04


33pF


Clock


Gard detecting


rXi

rh 74HC04


10

Detect 2

Detect 1

CA (RFU)

(RFU) C8

C3 (CLK)

(l/O) C7

C2 (RST)

(Vpp) C6

C1 (Vcc)

(GND) C5

10k


JL


100nF


5V/OV


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