73S8014R-DB Maxim Integrated Products, 73S8014R-DB Datasheet - Page 13

• Manufacturer Part Number: 73S8014R-DB
• Description: BOARD DEMO 73S8010R 20-SOIC
• Manufacturer: Maxim Integrated Products

Specifications of 73S8014R-DB

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

UM_8014_010
Rev. 1.0
Name
CMDVCC (R)
CMDVCC%
(RN/RT)
5V/#V (R)
CMDVCC#
(RN/RT)
CLKDIV1
CLKDIV2
OFF
RSTIN
I/OUC
Table 5: 73S8014R/RN/RT Pin Description: Microcontroller Interface
Pin #
7
20
5
1
2
3
6
(R) - Command VCC (negative assertion): Logic low on this pin causes
the LDO regulator to ramp the V
activation sequence, if a card is present.
(RN/RT) - Logic low on one or both of these pins will cause the LDO to
ramp the Vcc supply to the smart card and smart card interface to the
value described in the following table
Note: In order to set VCC to 1.8V, both CMDVCC% and CMDVCC# must
be asserted low within 400ns of each other. See the Data Sheet for
further details.
(R) - 5 volt / 3 volt card selection: Logic one selects 5 volts for V
card interface, logic low selects 3 volt operation. When the part is to be
used with a single card voltage, this pin should be tied to either GND or
V
pin high (selection of 5V card) when not connected.
(RN/RT) See pin 6 above.
Sets the divide ratio from the XTAL oscillator (or external clock input) to
the card clock. These pins include pull-down resistors.
Interrupt signal to the processor. Active Low - Multi-function indicating
fault conditions or card presence. Open drain output configuration – It
includes an internal 22kΩ pull-up to V
Reset Input: This signal is the reset command to the card.
System controller data I/O to/from the card. Includes a pull-up resistor to
V
CLKDIV1
DD
DD.
. However, it includes a high impedance pull-up resistor to default this
Description
0
0
1
1
CMDVCC%
CLKDIV2
0
0
1
1
0
1
1
0
73S8014R/RN/RT 20SO Demo Board User Manual
CLOCK RATE
XTALIN/8 (R) XTALIN/6 (RN/RT)
XTALIN/4
XTALIN/2
XTALIN
CMDVCC#
CC
0
supply to the card and initiates a card
1
0
1
DD.
Vcc Output Voltage
1.8V
5.0V
3.0V
LDO Off
CC
and
13