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MC33972T 데이터시트(PDF) 4 Page - Freescale Semiconductor, Inc |
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MC33972T 데이터시트(HTML) 4 Page - Freescale Semiconductor, Inc |
4 / 32 page Analog Integrated Circuit Device Data 4 Freescale Semiconductor 33972 PIN CONNECTIONS PIN CONNECTIONS Figure 3. 33972 Pin Connections Table 2. 33972 Pin Definitions A functional description of each pin can be found in the Functional Pin Description section beginning on page 10. Pin Number Pin Name Pin Function Formal Name Definition 1 GND Ground Ground Ground for logic, analog, and switch to battery inputs. 2 SI Input SPI Slave In SPI control data input pin from the MCU to the 33972. 3 SCLK Input Serial Clock SPI control clock input pin. 4 CS Input Chip Select SPI control chip select input pin from the MCU to the 33972. Logic [0} allows data to be transferred in. 5–8 25–28 SP0–3 SP4–7 Input Programmable Switches 0–7 Programmable switch-to-battery or switch-to-ground input pins. 9–15, 18–24 SG0–6, SG13–7 Input Switch-to-Ground Inputs 0–13 Switch-to-ground input pins. 16 VPWR Input Battery Input Battery supply input pin. Pin requires external reverse battery protection. 17 WAKE Input/Output Wake-up Open drain wake-up output. Designed to control a power supply enable pin. 29 INT Input/Output Interrupt Open-drain output to MCU. Used to indicate an input switch change of state. 30 AMUX Output Analog Multiplex Output Analog multiplex output. 31 VDD Input Voltage Drain Supply 3.3/5.0V supply. Sets SPI communication level for the SO driver. 32 SO Output SPI Slave Out Provides digital data from the 33972 to the MCU. EP Ground Exposed Pad It is recommended that the exposed pad is terminated to GND (pin 1) and system ground, however, the device will perform as specified with the exposed pad unterminated (floating). 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 Exposed Pad EK Suffix Only 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 EW / DWB Suffix EK Suffix |
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