mc33560 ON Semiconductor, mc33560 Datasheet - Page 10

• Manufacturer Part Number: mc33560
• Description: Power Management And Interface Ic For Smartcard Readers And Couplers
• Manufacturer: ON Semiconductor

Table 1. PIN FUNCTION DESCRIPTION
CONTROLLER INTERFACE
CARD INTERFACE
Pin
10
20
21
11
14
15
16
17
18
2
3
4
5
6
7
8
9
PWRON
INT
RDYMOD
CS
RESET
I/O
INVOUT
ASYCLKIN
SYNCLK
C8
C4
CRDIO
CRDRST
CRDCLK
CRDC4
CRDDET
CRDCON
Symbol
INPUT
Pulldown
OUTPUT
Pullup
I/O and Pullup
INPUT Pullup
INPUT
Pulldown
I/O
CLK
OUTPUT
CLK INPUT
high impedance
CLK INPUT
Pulldown
I/O
I/O
I/O
OUTPUT
OUTPUT
I/O
INPUT high
impedance
INPUT high
impedance
Type
This pin is used to start operation of the internal DC−DC converter.
In programming mode, this pin is used to set the “Output Voltage” switch. (See Table 2).
This open collector pin indicates a change in the card presence circuit status. When a card is
inserted or extracted, the pin goes to logic level “0”. The signal is reset to logic level “1” upon
the rising edge of CS or upon the rising edge of PWRON. In the case of a multislot application,
two or more INT outputs are connected together and the microcontroller has to poll all the
MC33560s to identify which slot was detected.
This bidirectional pin has tri−state output and Schmitt trigger input.
negative transition on CS.
mode, and RDYMOD is in output mode (See Tables 2 and 4):
This is the MC33560 chip select signal. Pins 2, 6, 7, 10, 20, 21 are disabled when CS = H.
When RDYMOD = L, the MC33560 enters programming mode upon the falling edge of CS.
(Figure 20)
The signal present at this input pin is translated to Pin 14 (the card reset signal) when CS = L.
The signal on this pin is latched when CS = H. This pin is also used in programming mode.
(See Table 2)
This pin connects to the Serial I/O port of a microcontroller. A bi−directional level translator
adapts the serial I/O signal between the smartcard and the microcontroller. The level translator
is enabled when CS = L. The signal on thispin is latched when CS=H. This pin is also used in
programming mode. (See Table 2)
The ASYCLKIN (Pin 9) signal is buffered and inverted to generate the output signal INVOUT.
This output is used for multislot applications, where the ASYCLKIN inputs and INVOUT
outputs are daisy−chained. (See the multislot application example in Figure 31)
This pin can be connected to the microcontroller master clock or any clock signal for
asynchronous cards. The signal is fed to the internal clock selector circuit, and is translated to
CRDCLK at the same frequency, or divided by 2 or 4, depending on programming.
(See Table 3)
This function is used for communication with synchronous cards, and the pin is generally
connected to the controller serial interface clock signal. The signal is fed to the internal clock
selector circuit, and is translated to CRDCLK upon appropriate programming of the MC33560
(See Table 3). When selected at programming, the signal on this pin is latched when CS = H.
General purpose input/output. It has the same behavior as I/O, except for programming. It can
be connected to a bidirectional port of the microcontroller. The level translator is enabled when
CS = L, and the signal is latched whenCS = H. (Compare with Pin 19)
General purpose input/output. It has the same behavior as I/O, except for programming. It can
be connected to a bidirectional port of the microcontroller. The level translator is enabled when
CS = L, and the signal is latched when CS = H. (Compare with Pin 16)
This pin connects to the serial I/O pin of the card connector. A bidirectional level translator
adapts the serial I/O signal between the card and the microcontroller. (Compare with Pin 7)
This pin connects to the RESET pin of the card connector. A level translator adapts the
RESET signal driven by the microcontroller. (Compare with Pin 6)
This pin connects to the CLK pin of the card connector. The CRDCLK signal is the output of
the clock selector circuit.The clock selection is programmed using Pins 2, 6 and 7 with
RDYMOD forced to “0”.
General purpose input/output. It has the same behavior as CRDIO. It can be connected to the
C4 pin of the card connector.
This pin connects to the card detection switch of the card connector. Card detection phase is
determined with Pin 18. This pin needs an external pullup or pulldown resistor to operate
properly.
This pin connects to PGND or V
this pin set to a logic “0”, the presence of a card is signalled with a logic “1” on Pin 17. With
this pin set to a logic “1”, the presence of a card is signalled with a logic “0” on Pin 17.
* When RDYMOD is forced to 0, the MC33560 can be set to programming mode by a
* When RDYMOD is connected to a high impedance, the MC33560 is in normal operating
− With CS = L and PWRON=H, RDYMOD indicates the status of the DC−DC converter.
− With CS = L and PWRON=L, RDYMOD indicates the status of the card detector.
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MC33560
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BAT
, or possibly to an output port of the microcontroller. With
Name/Function