DS_1209F_004
73S1209F Data Sheet
2 Typical Application Schematics
Y1
12.000MHz
Y
5.0V
3
/
C9
0.1uF
5.0V
3.3V
R1
1M
+
C8
1uF
3.3V Power
5.0V Power
D2
D1
R4
20K
+
C10
10uF
LED0
1
N/C
2
LED1
3
N/C
4
SC
L
5
SD
A
6
N/C
7
N/C
8
GN
D
9
X12IN
10
X12O
UT
11
CO
L0
12
CO
L1
13
CO
L2
14
AN
AIN
15
CO
L3
16
RX
D
17
TXD
18
COL4
19
USR7
20
ROW0
21
ROW1
22
USR6
23
ROW2
24
GND
25
N/C
26
N/C
27
VDD
28
USR5
29
USR4
30
USR3
31
USR8
32
USR2
33
ROW3
34
US
R1
35
US
R0
36
RO
W
4
37
RO
W
5
38
N/C
39
ER
ST
40
TC
LK
41
VD
D
42
TB
U
S
3
43
GN
D
44
RX
T
X
45
N/C
46
TB
U
S
2
47
SC
LK
48
TB
U
S
1
49
SIO
50
INT
3
51
INT2
52
TBUS0
53
TEST
54
VPC
55
PRESB
56
CLK
57
GND
58
RST
59
VCC
60
AUX2
61
AUX1
62
I/O
63
PRES
64
VDD
65
RESET
66
SEC
67
ISBR
68
U3
73S1209F
C1
1
C2
2
C3
3
C5
4
C6
5
C7
6
SW1
7
SW2
8
J1
SIM/SAM Connector
C13
1uF
C7
22pF
C14
0.1uF
C15
0.1uF
C16
0.1uF
3.3V
VO
3
VD
D
2
DB
0
7
NC
15
GN
D
1
RS
4
R/W
*
5
E
6
DB
7
14
DB
6
13
DB
5
12
DB
4
11
DB
3
10
DB
2
9
DB
1
8
U2
R5 20K
1
6
2
7
3
8
4
9
5
P1
DB9_RS232
C3
0.1uF
C5
0.1uF
C2
0.1uF
C4
0.1uF
C1
0.1uF
3.3V
3.3V
C1+
28
C1-
25
C2+
1
C2-
3
T1IN
24
T2IN
23
T3IN
22
T4IN
19
T5IN
17
R1OUTBF
16
R1OUT
21
R2OUT
20
R3OUT
18
GN
D
2
MBAUD
15
SHDNB
14
ENB
13
R3IN
11
R2IN
9
R1IN
8
T1OUT
5
T2OUT
6
T3OUT
7
T4OUT
10
T5OUT
12
V-
4
V+
27
VC
C
26
U1
MAX3237CAI
SERIAL
PORT
1
3
S1
SW_MOM
Rev. 1.4
103
US
R4
US
R2
US
R1
US
R0
US
R3
US
R5
US
R6
C12
27p
1
3
S2
SW_MOM
1
3
S3
SW_MOM
1
3
S4
SW_MOM
1
3
S5
SW_MOM
C11
27p
R2
10k
1
3
S7
SW_MOM
3.3V
1
3
S11
SW_MOM
3.3V
1
3
S16
SW_MOM
1
3
S21
SW_MOM
1
3
S26
SW_MOM
1
3
S8
SW_MOM
1
3
S12
SW_MOM
1
3
S17
SW_MOM
1
3
S22
SW_MOM
1
3
S27
SW_MOM
1
3
S6
SW_MOM
C18
0.1uF
1
3
S13
SW_MOM
1
3
S18
SW_MOM
1
3
S23
SW_MOM
1
3
S28
SW_MOM
1
3
S9
SW_MOM
1
3
S14
SW_MOM
1
3
S19
SW_MOM
1
3
S24
SW_MOM
1
3
S29
SW_MOM
1
3
S15
SW_MOM
1
3
S10
SW_MOM
1
3
S20
SW_MOM
1
3
S25
SW_MOM
1
3
S30
SW_MOM
C17
10uF
VCC
1
RST
2
CLK
3
C4
4
GND
5
VPP
6
I/O
7
C8
8
SW-1
9
SW-2
10
J2
Smart Card Connector
C6
22pF
USR6
US
R1
USR2
USR4
USR5
USR3
5.0V
R3
0
3.3V
9
F3
SMARTCARD
SLOT #1
C
DOWN
W
ENTER
X
2
E
LED0
LED1
5
F
4
UP
6
30-SWITCH
KEYPAD
LCD
BRIGHTNESS
ADJUST
D
CLR
US
R0
F1
ON/CE
Z
A
1
F2
B
7
0
OPTIONAL LCD DISPLAY SYSTEM
16 CHARACTER BY 2 LINES
8
.
3
1
2
CW
RV1
10K
Figure 24: 73S1209F Typical PINpad, Smart Card Reader Application Schematic