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HCS515 数据表(PDF) 21 Page - Microchip Technology |
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HCS515 数据表(HTML) 21 Page - Microchip Technology |
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21 / 32 page  © 2002 Microchip Technology Inc. DS40183D-page 21 HCS515 8.1 AC Electrical Characteristics 8.1.1 VALID TRANSMISSION NOTIFICATION Standard Operating Conditions (unless otherwise specified) Commercial (C): 0°C ≤TA ≤ +70°C Industrial (I): -40°C ≤ TA ≤ +85°C Symbol Parameters Min. Typ. Max. Units TDHI Command request time 0.0050 — 500 ms TCLA Micro request acknowledge time 0.0050 — 1 ms TACK Decoder Acknowledge time — — 4 µs TACT Start Command mode to first command bit 20 — 1200 µs TCLKH Clock high time 20 — 1000 µs TCLKL Clock low time 20 — 1000 µs FCLK Clock frequency 500 — 25000 Hz TDS Data hold time 14 — 1000 µs Note: These parameters are characterized but not tested. 8.1.2 COMMAND MODE ACTIVATION Standard Operating Conditions (unless otherwise specified): Commercial (C): 0°C ≤ TA ≤ +70°C Industrial (I): -40°C ≤ TA ≤ +85°C Symbol Parameters Min. Typ. Max. Units TREQ Command request time 0.0050 — 500 ms TRESP Microcontroller request acknowledge time —— 1 ms TACK Decoder acknowledge time — — 4 µs TSTART Start Command mode to first command bit 20 — 1000 µs TCLKH Clock high time 20 — 1000 µs TCLKL Clock low time 20 — 1000 µs FCLK Clock frequency 500 — 25000 Hz TDS Data hold time 14 — — µs TCMD Command validate time — — 10 µs TADDR Address validate time — — 10 µs TDATA Data validate time — — 10 µs Note: These parameters are characterized but not tested. 8.1.3 READ FROM USER EEPROM COMMAND Standard Operating Conditions (unless otherwise specified): Commercial (C): 0°C ≤ TA ≤ +70°C Industrial (I): -40°C ≤ TA ≤ +85°C Symbol Parameters Min. Typ. Max. Units TRD Decoder EEPROM read time 1000 — 2000 µs Note: These parameters are characterized but not tested. |
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