73S1209F Maxim, 73S1209F Datasheet - Page 9
![no-image](/images/no-image-200.jpg)
73S1209F
Manufacturer Part Number
73S1209F
Description
The 73S1209F is a self-contained, SoC smart card reader IC that is an ideal solution for serially connected ISO 7816 design
Manufacturer
Maxim
Datasheet
1.73S1209F.pdf
(123 pages)
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DS_1209F_004
Rev. 1.2
INT2
SIO
SCLK
PRES
PRESB
CLK
RST
IO
AUX1
AUX2
VCC
GND
VPC
TBUS(3:0)
0
1
2
3
RXTX
ERST
ISBR
TCLK
ANA_IN
SEC
TEST
Pin Name
52
50
48
64
56
57
59
63
62
61
60
58
55
53
49
47
43
45
40
68
41
15
67
54
32
43
35
36
38
42
41
40
39
37
34
28
25
26
10
31
30
33
2
GND
PSO
PSI
IO
IO
IO
IO
IO
IO
IO
IO
AI
DI
O
O
O
I
I
I
I
I
Figure 31
Figure 27
Figure 28
Figure 39
Figure 40
Figure 37
Figure 37
Figure 38
Figure 38
Figure 38
Figure 36
Figure 35
Figure 35
Description
General purpose interrupt input.
IO data signal for use with external Smart Card interface
circuit such as 73S8010.
Clock signal for use with external Smart Card interface
circuit.
Smart Card presence. Active high. Note: the pin has a
very weak pull down resistor. In noisy environments, an
external pull down may be desired to insure against a
false card event.
Smart Card presence. Active low. Note: the pin has a
very weak pull up resistor. In noisy environments, an
external pull up may be desired to insure against a false
card event.
Smart card clock signal.
Smart card Reset signal.
Smart card Data IO signal.
Auxiliary Smart Card IO signal (C4).
Auxiliary Smart Card IO signal (C8).
Smart Card VCC supply voltage output. A 0.47μF
capacitor is required and should be located at the smart
card connector. The capacitor should be a ceramic type
with low ESR.
Smart Card Ground.
Smart Card LDO regulator power supply source. A
10μF and a 0.1μF capacitor are required at the VPC
input. The 10μF capacitor should be a ceramic type
with low ESR.
Trace bus signals for ICE.
ICE control.
ICE control.
ICE control.
ICE control.
Analog input pin. This signal goes to a programmable
comparator and is used to sense the value of an
external voltage.
Input pin for use in programming security fuse. It should
be connected to ground when not in use.
Test pin, should be connected to ground.
73S1209F Data Sheet
9
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