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MC33975EK Datenblatt(PDF) 4 Page - Freescale Semiconductor, Inc |
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MC33975EK Datenblatt(HTML) 4 Page - Freescale Semiconductor, Inc |
4 / 34 page Analog Integrated Circuit Device Data 4 Freescale Semiconductor 33975 PIN CONNECTIONS PIN CONNECTIONS Figure 3. 33975 Pin Connections Table 2. Pin Definitions A functional description of each Pin can be found in the Functional Pin Description section on page 12. Pin Pin Name Formal Name Description 1 GND Ground Ground for logic, analog, and switch-to-battery inputs 2 SI SPI Slave In SPI control data input pin from MCU to 33975 3 SCLK Serial Clock SPI control clock input pin 4 CS Chip Select SPI control chip select input pin from MCU to 33975. Logic [0] allows data to be transferred in 5–8 25–28 SPn Programmable Switches 0–3 Programmable Switches 4–7 Programmable switch-to-battery or switch-to-ground input pins 9–15, 18–24 SGn Switch-to-Ground Inputs 0–6 Switch-to-Ground Inputs 13–7 Switch-to-ground input pins 16 VPWR Battery Input Battery supply input pin. This pin requires external reverse battery protection. 17 WAKE Wake-up Open drain wake-up output is designed to control a power supply enable pin 29 INT Interrupt Open-drain output to MCU is used to indicate input switch change of state 30 AMUX Analog Multiplex Output Analog multiplex output 31 VDD Voltage Drain Supply 3.3/5.0V supply sets SPI communication level for the SO driver 32 SO SPI Slave Out Provides digital data from 33975 to the MCU SO 1 SP7 SP6 SP5 SP4 SG7 SG8 SG9 SG10 SG11 SG13 WAKE SG12 INT VDD AMUX GND SP0 SP1 SP2 SP3 SG0 SG1 SG2 SG3 SG4 SG6 VPWR SG5 CS SI SCLK 8 9 10 11 12 13 14 15 16 3 4 5 6 7 2 32 25 24 23 22 21 20 19 18 17 30 29 28 27 26 31 |
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