73S1215F Maxim, 73S1215F Datasheet - Page 8

• Manufacturer Part Number: 73S1215F
• Description: The Teridian 73S1215F is a self-contained SoC smart card reader IC that is an ideal solution for any USB-connected ISO 7816 design
• Manufacturer: Maxim

1 Hardware Description
1.1 Pin Description
8
Pin Name
X12IN
X12OUT
X32IN
X32OUT
CPUCLK
DP
DM
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
10
11
39
26
27
21
22
24
34
37
38
12
13
14
16
19
36
35
33
31
30
29
23
20
32
8
7
5
6
16
17
24
23
22
21
20
19
14
13
8
9
5
6
IO
IO
IO
IO
O
O
O
O
O
I
I
I
Table 1: 73S1215F Pinout Description
Figure 27
Figure 27
Figure 28
Figure 30
Figure 43
Figure 34
Figure 30
Figure 29
Figure 28
Figure 43
Figure 35
Figure 31
Description
MPU/USB clock crystal oscillator input pin. A 12MHz
crystal is required for USB operation. A 1MΩ resistor
is required between pins X12IN and X12OUT.
MPU/USB clock crystal oscillator output pin.
RTC clock crystal oscillator input pin. A 32768Hz
crystal is required for low-power RTC operation.
RTC clock crystal oscillator output pin.
Output signal, square wave at the frequency of the
MPU clock.
USB D+ IO pin, requires series 24Ω resistor.
USB D- IO pin, requires series 24Ω resistor.
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.
2
2
C (master mode)
C (master mode) compatible Clock signal. Note: the
compatible data I/O. Note: this pin is
Rev. 1.4