73S8009R-IL/F Maxim Integrated Products, 73S8009R-IL/F Datasheet - Page 16

• Manufacturer Part Number: 73S8009R-IL/F
• Description: IC SMART CARD LEVEL SHIFT 28SOIC
• Manufacturer: Maxim Integrated Products
• Type: Low Cost Versatile Smart Card Interfacer

Specifications of 73S8009R-IL/F

• Applications: Smart Card Reader, Writer
• Voltage - Supply: 2.7 V ~ 3.6 V
• Package / Case: 28-SOIC (0.300", 7.50mm Width)
• Mounting Type: Surface Mount
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Interface: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

73S8009R Data Sheet
Deactivation is initiated either by the system controller setting CMDVCC#/CMDVCC% high, or
automatically in the event of hardware faults. Hardware faults are over-current, over-temperature and
card extraction during the session. The host can manage the I/O signals, CLKIN, RSTIN, and
CMDVCC#/CMDVCC% to create other de-activation sequences for non-emergency situations.
3.7
The system controller can monitor the OFF signal to:
•
•
Outside a Card Session
the card is present. Because it is outside a card session, any fault detection will not act upon the OFF
signal. No deactivation is required during this time.
During a Card Session
In this condition, CMDVCC#/CMDVCC% is always low and OFF falls low if the card is extracted or if any
fault is detected. At the same time that OFF is set low, the sequencer automatically starts the
deactivation process and the host should stop all transition on the signal lines.
Figure 7
session and outside the card session.
16
In this condition, CMDVCC#/CMDVCC%) is always high, OFF is low if the card is not present and high if
Query regarding the card presence outside of a card session
Detect faults during card sessions.
CMDVCC% or CMDVCC#
OFF and Fault Detection
CLKIN
RSTIN
I/OUC
shows the timing diagram for the signals CMDVCC#, CMDVCC%, PRES and OFF during a card
VCC
CLK
OFF
RST
I/O
Note: Host should set STROBE low when OFF goes low, otherwise CLK may be truncated
Figure 6: Deactivation Sequence
1 - OFF falls due to card removal or fault
2 - RST forced low approx. 0.6 µs after OFF falls
~ 100 µs
3 - CLK forced low approx. 7.5 µs after RST falls
4 - I/O falls approx 2 µs after CLK falls
5 - V
CC
is lowered
DS_8009R_056
Rev. 1.3