73S1210F Data Sheet
DS_1210F_001
1 Hardware Description
1.1 Pin Description
Table 1: 73S1210 Pinout Description
Pin Name
Description
X12IN
10
11
9
I
Figure 26 MPU clock crystal oscillator input pin. A 1MΩ resistor is
required between pins X12IN and X12OUT.
X12OUT
10
O
I
Figure 26 MPU clock crystal oscillator output pin.
Figure 34 Keypad row input sense.
ROW(5:0)
0
1
2
3
4
5
21
22
24
33
36
37
COL(4:0)
O
Figure 35 Keypad column output scan pins.
0
1
2
3
4
12
13
14
16
19
USR(7:0)
IO
Figure 30 General-purpose user pins, individually configurable as
inputs or outputs or as external input interrupt ports.
0
1
2
3
4
5
6
7
35
34
32
31
30
29
23
20
22
21
20
19
18
17
14
13
SCL
5
6
O
Figure 29 I2C (master mode) compatible Clock signal. Note: the 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.
SDA
6
7
IO
Figure 28 I2C (master mode) compatible data I/O. Note: this pin is 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.
RXD
TXD
INT3
INT2
SIO
17
18
48
49
47
11
12
30
31
29
I
O
I
Figure 32 Serial UART Receive data pin.
Figure 29 Serial UART Transmit data pin.
Figure 32 General purpose interrupt input.
Figure 32 General purpose interrupt input.
I
IO
Figure 28 IO data signal for use with external Smart Card interface
circuit such as 73S8010.
SCLK
45
28
O
Figure 29 Clock signal for use with external Smart Card interface
circuit.
8
Rev. 1.4
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
