73S8009R-IMR/F Maxim Integrated Products, 73S8009R-IMR/F Datasheet - Page 6

• Manufacturer Part Number: 73S8009R-IMR/F
• Description: IC SMART CARD LEVEL SHIFT 20-QFN
• Manufacturer: Maxim Integrated Products

Specifications of 73S8009R-IMR/F

• Applications: Smart Card Reader, Writer
• Voltage - Supply: 2.7 V ~ 3.6 V
• Package / Case: 20-VFQFN Exposed Pad
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Interface: -

73S8009R Data Sheet
Table 1
6
Pin
Name
Card Interface
I/O
AUX1
AUX2
RST
CLK
PRES
PRES
VCC
GND
Miscellaneous Inputs and Outputs
CLKIN
TEST1
TEST2
NC
Power Supply and Ground
VDD
VPC
GND
Microcontroller Interface
CS
OFF
describes the pin functions for the device.
3,17,18
(SO28)
Pin
26
16
22
20
11
14
28
15
27
25
24
23
21
19
2
1
4
(QFN20)
Pin
NA
NA
NA
NA
15
13
11
16
10
14
19
17
12
18
20
5
8
9
Table 1: 73S8009R Pin Definitions
Type
GND
GND
PSO
IO
IO
IO
O
O
O
–
–
–
I
I
I
I
Card I/O: Data signal to/from card. Includes a pull-up
resistor to V
AUX1: Auxiliary data signal to/from card. Includes a pull-up
resistor to V
AUX2: Auxiliary data signal to/from card. Includes a pull-up
resistor to V
Card reset: provides reset signal to card.
Card clock: provides clock signal to card. The rate of this
clock is determined by the external clock frequency
provided on pin CLKIN.
Card Presence switch: active high indicates card is present.
Should be tied to GND when not used, but includes a high-
impedance pull-down current source.
Card Presence switch: active low indicates card is present.
Should be tied to VDD when not used, but includes a high-
impedance pull-up current source.
Card power supply – logically controlled by the sequencer,
output of LDO regulator. Requires an external filter
capacitor to GND.
Card ground.
Clock source for the card clock.
This pin must be tied to GND in typical applications.
This pin must be tied to GND in typical applications.
Non-connected pin.
System interface supply voltage and supply voltage for
internal circuitry.
LDO regulator power supply source.
Ground.
When CS = 1, the control and signal pins are configured
normally. When CS is set low, CMDVCC%, RSTIN, and
CMDVCC# are latched, IOUC, AUX1UC, and AUX2UC are
set to high-impedance pull-up mode and do not pass data
to or from the smart card. Signals RDY and OFF are
disabled to prevent a low output and the internal pull-up
resistors are disconnected.
Interrupt signal to the processor. Active low, multi-function
indicating fault conditions and card presence. Open drain
output configuration. It includes an internal 20 kΩ pull-up to
VDD. The pull-up is disabled in PWRDN and CS=0 modes.
CC.
CC.
CC.
Description
DS_8009R_056
Rev. 1.3