73S8024RN-IMR 查看數據表（PDF） - Teridian Semiconductor Corporation
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73S8024RN-IMR Datasheet PDF : 27 Pages
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73S8024RN Data Sheet
DS_8024RN_020
MICROCONTROLLER INTERFACE
Name
CMDVCC
5V/#V
Pin
28SO
19
3
Pin
20QFN
10
20
Pin
32QFN
18
31
Description
Command VCC (negative assertion): Logic low on this pin
causes the LDO regulator to ramp the VCC supply to the
card and initiates a card activation sequence, if a card is
present.
5 volt / 3 volt card selection: Logic one selects 5 volts for
VCC and 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 VDD. However, it
includes a high impedance pull-up resistor to default this
pin high (selection of 5V card) when not connected.
CLKSTOP
7
–
4 Stops the card clock signal during a card session when
set high (card clock STOP mode). Internal pull-down
resistor allows this pin to be left as an open circuit if the
clock STOP mode is not used.
CLKLVL
8
–
5 Sets the logic level of the card clock STOP mode when
the clock is de-activated by setting pin 7 high. Logic low
selects card STOP low. Logic high selects card STOP
high. Internal pull-down resistor allows this pin to be left
as an open circuit if the clock STOP mode is not used.
CLKDIV1
CLKDIV2
1
18
29 Sets the divide ratio from the XTAL oscillator (or external
2
19
30 clock input) to the card clock. These pins include
pull-down resistors.
OFF
RSTIN
CLKDIV1
0
0
1
1
CLKDIV2
0
1
1
0
CLOCK RATE
XTALIN/8
XTALIN/4
XTALIN/2
XTALIN
23
14
22 Interrupt signal to the processor. Active Low - Multi-
function indicating fault conditions and card presence.
Open drain output configuration. It includes an internal
21kΩ pull-up to VDD.
20
11
19 Reset Input: This signal is the reset command to the card.
I/OUC
AUX1UC
AUX2UC
26
17
26 System controller data I/O to/from the card. Includes a
pull-up resistor to VDD.
27
–
27 System controller auxiliary data I/O to/from the card.
Includes a pull-up resistor to VDD.
28
–
28 System controller auxiliary data I/O to/from the card.
Includes a pull-up resistor to VDD.
6
Rev. 1.8
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