73S8010R
Low Cost Smart Card Interface
DATA SHEET
MICROCONTROLLER INTERFACE
PIN
(SO)
23
1
2
3
PIN
(QFN)
22
29
30
31
NAME
INT
SAD0
SAD1
SAD2
DESCRIPTION
Interrupt output(negative assertion). Interrupt output signal to the processor. A 20kΩ pull up to
V
DD
is provided internally
Serial device address bits. Digital inputs for address selection that allows for the connection of up
to 8 devices in parallel. Address selections as follows:
SAD2
0
0
0
0
1
1
1
1
SAD1
0
0
1
1
0
0
1
1
SAD0
0
1
0
1
0
1
0
1
I C Address (7 bits)
40h
42h
44h
46h
48h
4Ah
4Ch
4Eh
2
Note: Pins SADO and SAD1 are internally pulled-down and SAD2 is internally pulled-up.
The default address when left unconnected is 48h.
SCL
SDA
I/OUC
AUX1UC
AUX2UC
19
20
26
27
28
18
19
26
27
28
I C clock signal input
I C bi-directional serial data signal
System controller data I/O to/from the card. Includes internal pull-up resistor to V
DD
System controller auxiliary data I/O to/from the card. Includes internal pull-up resistor to V
DD
System controller auxiliary data I/O to/from the card. Includes internal pull-up resistor to V
DD
2
2
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©
2005-2008 TERIDIAN Semiconductor Corporation
Rev 1.5
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
