TDA8024TT PHILIPS [NXP Semiconductors], TDA8024TT Datasheet - Page 23

• Manufacturer Part Number: TDA8024TT
• Description: IC card interface
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
2004 July 12
handbook, full pagewidth
IC card interface
(1) These capacitors must be of the low ESR-type and be placed near the IC (within 100 mm).
(2) TDA8024 and the microcontroller must use the same V
(3) Make short, straight connections between CGND, C5 and the ground connection to the capacitor.
(4) Mount one low ESR-type 100 nF capacitor close to pin V
(5) Mount one low ESR-type 100 or 220 nF capacitor close to C1 contact (less than 100 mm from it).
(6) The connection to C3 should be routed as far from C2, C7, C4 and C8 and, if possible, surrounded by grounded tracks.
(7) Optional resistor bridge for changing the threshold of V
Pin 18 is not connected in the TDA8024AT.
5 V
3.3 V
100 nF
100 nF
100 nF
100 k
10 F
(1)
(1)
CLKDIV1
CLKDIV2
CGND
PGND
V DDP
5V/3V
PRES
PRES
AUX2
AUX1
V UP
I/O
Fig.13 Application diagram.
S2
S1
(3)
(normally closed type)
DD
DD
10
11
12
13
14
1
2
3
4
5
6
7
8
9
CC
. If this bridge is not required pin 18 should be connected to ground; see Section 8.2.2.
supply.
CARD READ
.
TDA8024
220 nF
100 nF
C5
C6
C7
C8
C1
C2
C3
C4
23
(5)
(4)
28
27
26
25
24
23
22
21
20
19
18
17
16
15
K1
K2
(6)
AUX2UC
AUX1UC
I/OUC
XTAL2
XTAL1
OFF
GND
V DD
RSTIN
CMDVCC
PORADJ
V CC
RST
CLK
MDB050
100 nF
33 pF
3.3 V
3.3 V
(7)
V DD
(2)
58.1 k
41.9 k
3.3 V POWERED
MICROCONTROLLER
Product specification
TDA8024