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參數資料
| 型號： | 73S8024RN-IMR/F |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 24/27頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SMART CARD INTERFACE 32SOIC |
| 標準包裝： | 2,500 |
| 系列： | * |
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73S8024RN Data Sheet
DS_8024RN_020
6
Rev. 2
MICROCONTROLLER INTERFACE
Name
Pin
28SO
Pin
20QFN
Pin
32QFN
Description
CMDVCC
19
10
18
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.
5V/#V
3
20
31
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
2
18
19
29
30
Sets the divide ratio from the XTAL oscillator (or external
clock input) to the card clock. These pins include
pull-down resistors.
CLKDIV1
CLKDIV2
CLOCK RATE
0
XTALIN/8
0
1
XTALIN/4
1
XTALIN/2
1
0
XTALIN
OFF
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.
RSTIN
20
11
19
Reset Input: This signal is the reset command to the card.
I/OUC
26
17
26
System controller data I/O to/from the card. Includes a
pull-up resistor to VDD.
AUX1UC
27
–
27
System controller auxiliary data I/O to/from the card.
Includes a pull-up resistor to VDD.
AUX2UC
28
–
28
System controller auxiliary data I/O to/from the card.
Includes a pull-up resistor to VDD.
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