73s1217f68im Maxim Integrated Products, Inc., 73s1217f68im Datasheet - Page 8

• Manufacturer Part Number: 73s1217f68im
• Description: Bus-powered 80515 System-on-chip With Usb, Iso 7816 / Emv, Pinpad And More
• Manufacturer: Maxim Integrated Products, Inc.

1 Hardware Description
1.1 Pin Description
8
Pin Name
X12IN
X12OUT
X32IN
X32OUT
DP
DM
ROW(5:0) 0
1
2
3
4
5
COL(4:0) 0
1
2
3
4
USR(7:0) 0
1
2
3
4
5
6
7
SCL
SDA
RXD
TXD
10
11
26
27
21
22
24
33
36
37
12
13
14
16
19
35
34
32
31
30
29
23
20
17
18
8
7
5
6
IO
IO
IO
IO
O
O
O
O
O
I
I
I
I
Figure 29
Figure 29
Figure 30
Figure 30
Figure 45
Figure 45
Figure 37
Figure 38
Figure 33
Figure 32
Figure 31
Figure 35
Figure 32
Table 1: 73S1217 Pinout Description
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.
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
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.
Serial UART Receive data pin.
Serial UART Transmit data pin.
2
2
C (master mode) compatible Clock signal. Note: the pin is
C (master mode) compatible data I/O. Note: this pin is
Rev. 1.2