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PDF TDA8002C Data sheet ( Hoja de datos )
| Número de pieza | TDA8002C | |
| Descripción | IC card interface | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
DATA SHEET
TDA8002C
IC card interface
Product specification
Supersedes data of 1999 Feb 24
File under Integrated Circuits, IC02
1999 Oct 12
1 page  
Philips Semiconductors
IC card interface
Product specification
TDA8002C
PINNING
PIN
SYMBOL TYPE TYPE TYPE TYPE I/O
CT/A CT/B CT/C CG
DESCRIPTION
XTAL1
1 1 1 30 I crystal connection or input for external clock
XTAL2
2 2 2 31 O crystal connection
I/OUC
3 3 3 32 I/O data I/O line to and from microcontroller
AUX1UC 4 4 4 1 I/O auxiliary line 1 to and from microcontroller for synchronous
applications
AUX2UC 5 − − 2 I/O auxiliary line 2 to and from microcontroller for synchronous
applications
CS − 5 5 3 I chip select control input for enabling pins I/OUC, AUX1UC,
AUX2UC, CLKSEL, CLKDIV1, CLKDIV2, STROBE, CV/TV,
CMDVCC, RSTIN, OFF and MODE; note 1
ALARM 6 6 6 4 O open drain PMOS reset output for microcontroller (active
HIGH)
CLKSEL
7
7
7
5
I control input signal for CLK (LOW = XTAL oscillator;
HIGH = STROBE input)
CLKDIV1 8 8 8 6 I control input with CLKDIV2 for choosing CLK frequency
CLKDIV2 9 9 9 7 I control input with CLKDIV1 for choosing CLK frequency
STROBE 10 10 10
8
I external clock input for synchronous applications
CLKOUT 11 11 11
9
O clock output (see Table 1)
DGND1 12 12 12 10 supply digital ground 1
AGND
13 13 13 11 supply analog ground
S2 14 14 14 12 I/O capacitance connection for voltage doubler
VDDA
S1
15 15 15 13 supply analog supply voltage
16 16 16 14 I/O capacitance connection for voltage doubler
VUP
17 17 17 15 I/O output of voltage doubler
I/O 18 18 18 16 I/O data I/O line to and from card
AUX2
PRES
19 −
− 17 I/O auxiliary I/O line to and from card
20 19 19 18
I card input presence contact (active LOW)
PRES
CV/TV
AUX1
− 20 − − I active HIGH card input presence contact
− − 20 19 I card voltage selection input line (high = 5 V, low = 3 V); note 1
21 21 21 20 I/O auxiliary I/O line to and from card
CLK
22 22 22 21
O clock to card output (C3I) (see Table 1)
RST
23 23 23 22
O card reset output (C2I)
VCC
24 24 24 23
O supply for card (C1I)
CMDVCC 25 25 25 24
I start activation sequence input from microcontroller (active
LOW)
RSTIN
26 26 26 25
I card reset input from microcontroller
OFF
27 27 27 26
O open-drain NMOS interrupt output to microcontroller (active
LOW)
1999 Oct 12
5
5 Page 
Philips Semiconductors
IC card interface
Product specification
TDA8002C
Logic circuitry
After power-up, the circuit has six possible states of
operation. Figure 9 shows the state diagram.
IDLE MODE
After reset, the circuit enters the idle mode. A minimum
number of functions in the circuit are active while waiting
for the microcontroller to start a session:
• All card contacts are inactive
• I/OUC, AUX1UC and AUX2UC are high-impedance
• Oscillator (XTAL) runs, delivering CLKOUT
• Voltage supervisor is active.
LOW-POWER MODE
When pin MODE goes LOW, the circuit enters the
low-power (sleep) mode. As long as pin MODE is LOW no
activation is possible.
If pin MODE goes LOW in the active mode, a normal
deactivation sequence is performed before entering the
low-power mode. When pin MODE goes HIGH, the circuit
enters the normal operating mode after a delay of at least
6 ms (96 cycles of CLKOUT). During this time the
CLKOUT remains at 16 kHz.
• All card contacts are inactive
• Oscillator (XTAL) does not operate
• The VDD supervisor, ALARM output, card presence
detection and OFF output remain functional
• Internal oscillator is slowed to 32 kHz, providing 16 kHz
on CLKOUT.
ACTIVE MODE
When the activation sequence is completed, the
TDA8002C will be in the active mode. Data is exchanged
between the card and the microcontroller via the I/O lines.
handbook, full pagewidth
POWER
OFF
LOW-POWER
MODE
IDLE
MODE
ACTIVATION
FAULT
DEACTIVATION
ACTIVE
MODE
MGE735
Fig.9 State diagram.
1999 Oct 12
11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet TDA8002C.PDF ] | |
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