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33975A Datasheet(PDF) 4 Page - Freescale Semiconductor, Inc |
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33975A Datasheet(HTML) 4 Page - Freescale Semiconductor, Inc |
4 / 32 page Analog Integrated Circuit Device Data 4 Freescale Semiconductor 33975 TERMINAL CONNECTIONS TERMINAL CONNECTIONS Figure 3. 33975 Terminal Connections Table 2. Terminal Definitions A functional description of each terminal can be found in the Functional Terminal Description section on page 11. Terminal Terminal 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 terminal from MCU to 33975. 3 SCLK Serial Clock SPI control clock input terminal. 4 CS Chip Select SPI control chip select input terminal 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 terminals. 9–15, 18–24 SGn Switch-to-Ground Inputs 0–6 Switch-to-Ground Inputs 13–7 Switch-to-ground input terminals. 16 VPWR Battery Input Battery supply input terminal. This terminal requires external reverse battery protection. 17 WAKE Wake-Up Open drain wake-up output is designed to control a power supply enable terminal. 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 3.3/5.0 V supply sets SPI communication level for SO driver. 32 SO SPI Slave Out Provides digital data from 33975 to 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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