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| TDA8024 Datasheet, PDF (5/29 Pages) NXP Semiconductors – IC card interface | |||
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Philips Semiconductors
IC card interface
6 BLOCK DIAGRAM
Product speciï¬cation
TDA8024
100 nF
100 nF
100 nF
VDD
21
VDD
SUPPLY
R1
PORADJ 18
(1)
INTERNAL
REFERENCE
Vref
R2
VOLTAGE SENSE
VDDP
S1
S2
6
7
5
DC/DC CONVERTER
INTERNAL OSCILLATOR
2.5 MHz
POWER_ON
EN1 CLKUP
OFF
23
RSTIN
20
CMDVCC 19
5V/3V
3
ALARM
CLKDIV1
1
CLKDIV2
2
HORSEQ
CLOCK
CIRCUITRY
EN2
PVCC
VCC
GENERATOR
EN5
SEQUENCER
EN4
RST
BUFFER
CLOCK
BUFFER
CLK
XTAL1
XTAL2
24
25 OSCILLATOR
EN3
THERMAL
PROTECTION
AUX1UC
27
AUX2UC
28
TDA8024
I/O
TRANSCEIVER
I/O
TRANSCEIVER
I/OUC
26
22
GND
I/O
TRANSCEIVER
4 PGND
8 VUP
100 nF
17 VCC
100 nF
14 CGND
16 RST
100 nF
15 CLK
10 PRES
9
PRES
13 AUX1
12 AUX2
11
I/O
mdb051
(1) Optional external resistor bridge. If this bridge is not required pin 18 should be connected to ground; see Section 8.2.2. Pin 18 is not connected
in the TDA8024AT.
Fig.1 Block diagram.
2004 July 12
5
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