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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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L9945 데이터시트(PDF) 131 Page - STMicroelectronics |
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L9945 데이터시트(HTML) 131 Page - STMicroelectronics |
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131 / 144 page  • If both OFF and ON pulses are requested in the same SPI frame, the behavior depends on the output state: – If the output is currently being kept OFF, an ON pulse will be generated – If the output is currently being kept ON, an OFF pulse will be generated Diagnostic pulses requests are ignored in case of H-Bridge configuration. The table below lists the diagnostic pulses related timings. Table 49. Diagnostic pulses timings Symbol Parameter Min. Max. Unit tPULSE_ON ON pulse duration 80 120 µs tPULSE_OFF OFF pulse duration 100 150 µs 6.6 Summary of disable sources and faults The table below gathers all the disable sources and the fault events and summarizes their effects on the outputs. Table 50. Summary of disable sources and faults Event CH1 – CH5 CH6 CH7 – CH8 DIS assertion (Section 6.1.1) Actively OFFA Actively OFFA No Effect NDIS assertion (Section 6.1.1) Actively OFFA Actively OFFA No Effect VDD5 overvoltage (Section 6.1.2) Actively OFFM Actively OFFM No Effect VDD5 undervoltage (Section 6.1.2) Actively OFFA Actively OFFA No Effect BIST on going (Section 6.1.3) Three-State Three-State Three-State BIST failed (Section 6.1.3) Actively OFFM Actively OFFM Three-StateM HWSC on going (Section 6.1.3) Actively OFF Actively OFF Three-State HWSC failed (Section 6.1.3) Actively OFFM Actively OFFM Three-StateM VPS undervoltage (Section 6.1.4) Actively OFFA Actively OFFA Actively OFFA Charge Pump undervoltage (Section 6.1.5) Actively OFFA Actively OFFA Actively OFFA Disable via SPI (en_OUT_xx) (Section 6.1.6) Three-StateM Three-StateM Three-StateM Disable via SPI (prot_disable_xx) (Section 6.1.7) Actively OFFM Actively OFFM Actively OFFM EN6 set low (Section 6.1.8) No Effect Actively OFFA No Effect NRES assertion (Section 6.1.9) Actively OFFM Actively OFFM Actively OFFM CC failed (Section 6.1.10) Actively OFFM Actively OFFM No Effect OC failure (Section 6.3.1) Actively OFFM Actively OFFM Actively OFFM STG failure (Section 6.4) No Effect No Effect No Effect STB failure (Section 6.4) No Effect No Effect No Effect OL failure (Section 6.4) No Effect No Effect No Effect ON pulse request (Section 6.5) Actively ONA Actively ONA Actively ONA OFF pulse request (Section 6.5) Actively OFFA Actively OFFA Actively OFFA Syntax: A = Automatic Re-Engagement, M = Manual Re-Engagement Note: When configured as H-Bridge, CH7 and CH8 are treated like CH1-CH5. L9945 Safety & diagnostics DS12275 - Rev 10 page 131/144 |
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