Datasheet

73S8009R Data Sheet DS_8009R_056
Rev. 1.3 2
• System Controller Interface
• Five signal images of the card signals
(RSTIN, CLKIN, IOUC, AUX1UC, AUX2UC)
• Two inputs select card voltage (CMDVCC%,
CMDVCC#)
• Two Interrupt outputs (OFF, RDY) inform the
system controller of card presence / faults
and the interface status
• Chip select input (CS)
• Power down input (PWRDN)
• Regulator Power Supply (V
PC
):
• Class A-B-C readers: 5V, 3V and 1.8V
cards: 4.75 V to 6.0 V
• Digital Interface (V
DD
): 2.7 V to 3.6 V
• 6 kV ESD protection on the card interface
• SO28 or QFN20 package
FUNCTIONAL DIAGRAM
Pin numbers reference the SO28 package
[Pin numbers] reference the QFN20 Package
Figure 1: 73S8009R Block Diagram
SMART CARD I/O BUFFERS
LDO
REGULATOR
VOLTAGE REFERENCE
CONTROL
LOGIC
RESET
BUFFER
CLOCK
BUFFER
OVER
TEMP
R-C
OSC.
VCC FAULT
VPC FAULT
1.5MHz
VDD VPC
VCC
RST
CLK
PRES
PRES
I/O
AUX1
AUX2
CLKIN
IOUC
AUX1UC
AUX2UC
CMDVCC5
RSTIN
CMDVCC3
PWRDN
RDY
GND
TEMP FAULT
OFF
bias currents
vref
GND
CS
5 [1]
6
7
8 [2]
9 [3]
10 [4]
11 [5]
12 [6]
13 [7]
[9] 15
16 [10]
19 [11]
20 [12]
21 [13]
22 [14]
25 [15]
26 [16]
[17] 28
1 [18]
4 [20]
24
23
27