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MC33560DTBR2G bảng dữ liệu(PDF) 10 Page - ON Semiconductor |
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MC33560DTBR2G bảng dữ liệu(HTML) 10 Page - ON Semiconductor |
10 / 26 page MC33560 http://onsemi.com 10 Table 1. PIN FUNCTION DESCRIPTION Pin Symbol Type Name/Function CONTROLLER INTERFACE 2 PWRON INPUT Pulldown 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). 3 INT OUTPUT Pullup 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. 4 RDYMOD I/O and Pullup This bidirectional pin has tri−state output and Schmitt trigger input. * When RDYMOD is forced to 0, the MC33560 can be set to programming mode by a negative transition on CS. * When RDYMOD is connected to a high impedance, the MC33560 is in normal operating mode, and RDYMOD is in output mode (See Tables 2 and 4): − 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. 5 CS INPUT Pullup 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) 6 RESET INPUT Pulldown 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) 7 I/O I/O 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) 8 INVOUT CLK OUTPUT 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) 9 ASYCLKIN CLK INPUT high impedance 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) 10 SYNCLK CLK INPUT Pulldown 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. 20 C8 I/O 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) 21 C4 I/O 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) CARD INTERFACE 11 CRDIO I/O 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) 14 CRDRST OUTPUT 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) 15 CRDCLK OUTPUT 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”. 16 CRDC4 I/O General purpose input/output. It has the same behavior as CRDIO. It can be connected to the C4 pin of the card connector. 17 CRDDET INPUT high impedance 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. 18 CRDCON INPUT high impedance This pin connects to PGND or VBAT, or possibly to an output port of the microcontroller. With 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. |
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