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TDA8004T Datenblatt(Datasheet) 5 Page - NXP Semiconductors

Teile-Nr. TDA8004T
Beschreibung  IC card interface
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Hersteller  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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 5 page
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1999 Dec 30
5
Philips Semiconductors
Product specification
IC card interface
TDA8004T
PINNING
SYMBOL
PIN
I/O
DESCRIPTION
CLKDIV1
1
I
control with CLKDIV2 for choosing CLK frequency
CLKDIV2
2
I
control with CLKDIV1 for choosing CLK frequency
RFU1
3
I
reserved for future use (to be connected to VDD or microcontroller I/O; active HIGH)
PGND
4
supply power ground for step-up converter
S2
5
I/O
capacitance connection for step-up converter (a 100 nF capacitor with ESR < 100 m
must be connected between pins S1 and S2)
VDDP
6
supply power supply voltage for step-up converter
S1
7
I/O
capacitance connection for step-up converter (a 100 nF capacitor with ESR < 100 m
must be connected between pins S1 and S2)
VUP
8
I/O
output of step-up converter (a 100 nF capacitor with ESR < 100 m
Ω must be
connected to PGND)
PRES
9
I
card presence contact input (active LOW); if PRES or PRES is true, then the card is
considered as present
PRES
10
I
card presence contact input (active HIGH); if PRES or PRES is true, then the card is
considered as present
I/O
11
I/O
data line to and from card (C7) (internal 10 k
Ω pull-up resistor connected to V
CC)
AUX2
12
I/O
auxiliary line to and from card (C8) (internal 10 k
Ω pull-up resistor connected to V
CC)
AUX1
13
I/O
auxiliary line to and from card (C4) (internal 10 k
Ω pull-up resistor connected to V
CC)
CGND
14
supply ground for card signals
CLK
15
O
clock to card (C3)
RST
16
O
card reset (C2)
VCC
17
O
Supply for card (C1); decouple to CGND with 2
× 100 nF or 1 × 100 nF and 1 × 220 nF
capacitors with ESR < 100 m
Ω (with 220 nF, the noise margin on VCC will be higher).
n.c.
18
not connected
CMDVCC
19
I
start activation sequence input from microcontroller (active LOW)
RSTIN
20
I
card reset input from microcontroller (active HIGH)
VDD
21
supply supply voltage
GND
22
supply ground
OFF
23
O
NMOS interrupt to microcontroller (active LOW) with 20 k
Ω internal pull-up resistor
connected to VDD (refer section “Fault detection”)
XTAL1
24
I
crystal connection or input for external clock
XTAL2
25
O
crystal connection (leave open if an external clock source is used)
I/OUC
26
I/O
microcontroller data I/O line (internal 10 k
Ω pull-up resistor connected to V
DD)
AUX1UC
27
I/O
auxiliary line to and from microcontroller (internal 10 k
Ω pull-up resistor connected to
VDD)
AUX2UC
28
I/O
auxiliary line to and from microcontroller (internal 10 k
Ω pull-up resistor connected to
VDD)




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