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MCZ33797EK Fiches technique(PDF) 4 Page - Freescale Semiconductor, Inc |
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MCZ33797EK Fiches technique(HTML) 4 Page - Freescale Semiconductor, Inc |
4 / 34 page Analog Integrated Circuit Device Data 4 Freescale Semiconductor 33797 PIN CONNECTIONS 15 SENSE_1B Input Squib Sense 1B Used during standard applications involving a four-channel squib driver IC and during cross-coupling applications involving two four-channel squib driver ICs (squib driver IC #1 and squib driver IC #2). 16 SQB_LO_1B Output Squib Lo 1B Drain of the low-side switch that connects to the low pin of Squib_1B 17 SQB_LO_2B Output Squib Lo 2B Drain of the low-side switch that connects to the low pin of Squib_2B 18 SENSE_2B Input Squib Sense 2B Used during standard applications involving a four-channel squib driver IC and during cross-coupling applications involving two four-channel squib driver ICs (squib driver IC #1 and squib driver IC #2). 19 R_LIMIT_2 Output Limit Resistor - 2A and 2B External resistor to ground is used to set current limit for Squib_2A and squib_2B FET drivers. 20 FEN_2 Input FET Driver 2A and 2B Active high input signal to enable operation of the squib_2A and Squib_2B FET drivers. 21 SQB_HI_2B Output Squib Hi 2B Drain of the high-side switch that connects to the low pin of Squib_2B. 22 VFIRE_2B Supply Squib Firing Supply 2B Firing supply pin for squib_2B. 23 R_DIAG Input Limit Resistor - Diagnostic External resistor to ground is used to set the diagnostic current for squib resistance. 24 VFIRE_RTN Ground Squib Fire Power Ground Power Ground for squibs 1A, 1B, 2A, and 2B 25 VFIRE_RTN Ground Squib Fire Power Ground Power Ground for squibs 1A, 1B, 2A, and 2B 26 VDIAG_2 Supply Squib Diagnostic 2A and 2b Diagnostic pin for high-side safing sensor for squibs 2A and 2B and the VFIRE supply voltage. 27 VFIRE_2A Supply Squib Firing Supply 2A Firing supply pin for squib_ 2A 28 SQB_HI_2A Output Squib Hi 2A Drain of the high-side switch that connects to the low pin of Squib_2A 29 RST Input Reset Reset, Active Low 30 CS Input Chip Select Chip Select for SPI interface, Active Low 31 SENSE_2A Input Squib Sense 2A Used during standard applications involving a four-channel squib driver IC or during cross-coupling applications involving two four-channel squib driver ICs (squib driver IC #1 and squib driver IC #2). 32 SQB_LO_2A Output Squib Lo 2A Drain of the low-side switch that connects to the low pin of Squib_2A Table 1. Pin Function Description (continued) Pin Pin Name Pin Function Formal Name Pin Description |
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