73s1209f68im Maxim Integrated Products, Inc., 73s1209f68im Datasheet - Page 8
73s1209f68im
Manufacturer Part Number
73s1209f68im
Description
Self-contained Pinpad, Smart Card Reader Ic Uart To Iso7816 / Emv Bridge Ic
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.73S1209F68IM.pdf
(123 pages)
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1 Hardware Description
1.1 Pin Description
8
X12IN
X12OUT
ROW (5:0)
0
1
2
3
4
5
COL(4:0)
0
1
2
3
4
USR(8:0)
0
1
2
3
4
5
6
7
8
SCL
SDA
LED(1:0)
0
1
RXD
TXD
INT3
Pin Name
10
11
21
22
24
34
37
38
12
13
14
16
19
36
35
33
31
30
29
23
20
32
17
18
51
5
6
1
3
24
23
22
21
20
19
14
13
11
12
8
9
5
6
3
4
IO
IO
IO
O
O
O
O
I
I
I
I
Table 1: 73S1209F Pinout Description
Figure 26
Figure 26
Figure 32
Figure 33
Figure 29
Figure 28
Figure 27
Figure 34
Figure 31
Figure 28
Figure 31
MPU clock crystal oscillator input pin. A 1MΩ resistor is
required between pins X12IN and X12OUT.
MPU clock crystal oscillator output pin.
Keypad row input sense.
Keypad column output scan pins.
General-purpose user pins, individually configurable as
inputs or outputs or as external input interrupt ports.
I
pin is configured as an open drain output. When the
I2C interface is being used, an external pull up resistor
is required. A value of 3K is recommended.
I
bi-directional. When the pin is configured as output, it is
an open drain output. When the I2C interface is being
used, an external pull up resistor is required. A value of
3K is recommended.
Special output drivers, programmable pull-down current
to drive LEDs. May also be used as inputs.
Serial UART Receive data pin.
Serial UART Transmit data pin.
General purpose interrupt input.
Description
2
2
C (master mode) compatible Clock signal. Note: the
C (master mode) compatible data I/O. Note: this pin is
Rev. 1.2
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