DS_1209F_004
73S1209F Data Sheet
on a card insertion / removal to allow power saving modes. Card insertion / removal is generated from
the respective card switch detection inputs (whose polarity is programmable).
The built-in ICC Interface has a low dropout regulator (VCC generator) capable of driving 1.8, 3.0 and 5.0V
smart cards in accordance with the ISO-7816-3 and EMV4.0 standards. This converter requires a
separate 5.0V input supply source designated as VPC. Auxiliary I/O lines C4 and C8 are only provided
for the built-in interface. If support for the auxiliary lines is necessary for the external interfaces, they
need to be handled manually through the USR GPIO pins. The external 8010 devices directly connect
the I/O (SIO) and clock (SCLK) signals and control is handled via the I2C interface.
Figure 14 shows how multiple 8010 devices can be connected to the 73S1209F.
VPC
VPC
PRES
PRES
VCC
RST
CLK
SC1
C4
C8
I/O
GND
SIO
SCLK
INT
PRES
73S1209F
SCL
SDA
IOUC
SC(n)
73S8010
XTALIN
SAD(0:2)
INT
PRES
SCL
SDA
SC3
73S8010
IOUC
XTALIN
SAD(0:2)
INT
PRES
INT3
SDA
SCL
SCL
SDA
IOUC
SC2
73S8010
XTALIN
SAD(0:2)
Figure 14: External Smart Card Interface Block Diagram
Rev. 1.2
69
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
