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MC33982BPNAR2 Scheda tecnica(PDF) 3 Page - Freescale Semiconductor, Inc |
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MC33982BPNAR2 Scheda tecnica(HTML) 3 Page - Freescale Semiconductor, Inc |
3 / 35 page Analog Integrated Circuit Device Data Freescale Semiconductor 3 33982 PIN CONNECTIONS PIN CONNECTIONS Figure 3. 33982B Pin Connections Table 1. Pin Definitions Functional descriptions of many of these pins can be found in the Functional Pin Description section beginning on page 15. Pin Number Pin Name Pin Function Formal Name Definition 1 CSNS Output Output Current Monitoring This pin is used to output a current proportional to the high side output current and used externally to generate a ground-referenced voltage for the microcontroller to monitor output current. 2 WAKE Input Wake This pin is used to input a Logic [1] signal in order to enable the watchdog timer function. 3RST Input Reset (Active Low) This input pin is used to initialize the device configuration and fault registers, as well as place the device in a low current sleep mode. 4 IN Input Direct Input The Input pin is used to directly control the output. 5FS Output Fault Status (Active Low) This is an open drain configured output requiring an external pull-up resistor to VDD for fault reporting. 6 FSI Input Fail-Safe Input The value of the resistance connected between this pin and ground determines the state of the output after a watchdog timeout occurs. 7CS Input Chip Select (Active Low) This input pin is connected to a chip select output of a master microcontroller (MCU). 8 SCLK Input Serial Clock This input pin is connected to the MCU providing the required bit shift clock for SPI communication. 9 SI Input Serial Input This is a command data input pin connected to the SPI Serial Data Output of the MCU or to the SO pin of the previous device in a daisy chain of devices. 10 VDD Input Digital Drain Voltage (Power) This is an external voltage input pin used to supply power to the SPI circuit. HS HS 16 15 VPWR 14 GND 13 1 11 10 9 8 7 6 5 4 3 2 12 TRANSPARENT TOP VIEW |
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