TDA8004T Datasheet, PDF (5/24 Pages) NXP Semiconductors – IC card interface

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