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HCS500T-I/ST Datasheet(PDF) 29 Page - Microchip Technology |
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HCS500T-I/ST Datasheet(HTML) 29 Page - Microchip Technology |
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29 / 42 page  2001-2015 Microchip Technology Inc. DS40000153E-page 29 HCS500 9.2.6 LEARN STATUS STRING 9.2.7 ERASE ALL COMMAND 9.2.8 PROGRAMMING COMMAND TABLE 9-8: LEARN STATUS STRING Section 9.1 “Standard Operating Conditions” Symbol Parameters Min. Typ. Max. Units TDHI Command request time — — 500 ms TCLA Microcontroller command request time 0.005 — 500 ms TCA Decoder request acknowledge time —— 10 s TCLH Clock high hold time 1.2 ms TCLL Clock low hold time 0.020 — 1.2 ms TCLKH Clock high time 20 — 1000 s TCLKL Clock low time 20 — 1000 s FCLK Clock frequency 500 — 25000 Hz TDS Data hold time — — 5 s * These parameters are characterized but not tested. TABLE 9-9: TIMING SPECIFICATION FOR ERASE ALL COMMAND Section 9.1 “Standard Operating Conditions” Symbol Parameters Min. Typ. Max. Units TERA Learn command activation time 20 — 1000 s TACK Decoder acknowledge time 20 — 210 ms TRESP Microcontroller acknowledge response time 20 — 1000 s TACK2 Decoder data line low — — 10 s * These parameters are characterized but not tested. TABLE 9-10: TIMING SPECIFICATION FOR PROGRAMMING COMMAND Section 9.1 “Standard Operating Conditions” Symbol Parameters Min. Typ. Max. Units TPP1 Command request time — — 500 ms TPP2 Decoder acknowledge time — — 1 ms TPP3 Start Command mode to first command bit 20 — 1000 s TPP4 Data line low before tri-stated — — 5 s TCLKH Clock high time 20 — 1000 s TCLKL Clock low time 20 — 1000 s FCLK Clock frequency 500 — 25000 Hz TDS Data hold time — — 5 s TCMD Command validate time — — 10 s TACK Command acknowledge time 30 — 240 ms TWT2 Acknowledge respond time 20 — 1000 s TALW Data low after clock low — — 10 s * These parameters are characterized but not tested. |
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