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MC33984CHFK Datasheet(PDF) 4 Page - Freescale Semiconductor, Inc |
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MC33984CHFK Datasheet(HTML) 4 Page - Freescale Semiconductor, Inc |
4 / 38 page Analog Integrated Circuit Device Data 4 Freescale Semiconductor 33984 PIN CONNECTIONS PIN CONNECTIONS Figure 3. 33984 Pin Connections (Transparent Top View) Table 2. Pin Definitions Functional descriptions of many of these pins can be found in the Functional Pin Description section beginning on page 17. Pin Pin Name Pin Function Formal Name Definition 1 CSNS Output Output Current Monitoring This pin is used to output a current proportional to the designated HS0-1 output. 2 WAKE Input Wake This pin is used to input a Logic [1] signal so as to enable the watchdog timer function. 3 RST 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 IN0 Input Direct Input 0 This input pin is used to directly control the output HS0. 5 FS 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 outputs after a watchdog timeout occurs. 7 CS 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 of 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. HS1 HS0 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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