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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HCS473 датащи(PDF) 53 Page - Microchip Technology |
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HCS473 датащи(HTML) 53 Page - Microchip Technology |
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53 / 68 page  2000-2013 Microchip Technology Inc. Preliminary DS40035D-page 53 HCS473 TABLE 7-4: AC CHARACTERISTICS, Commercial Temperature Devices AC Characteristics Tamb = 0°C to 70°C, 2.05V < VDD < 5.5V FOSC = 4 MHz ±10% Symbol Min Typ (1) Max Description General HCS473 Timing TDB 9 ms 10 ms 11 ms Debounce Time TQUE 1.8s 2s 2.2s Que Window TPU 9.81 ms 10.9 ms 12 ms Power-up Delay Time (includes button debounce) TPLL 17.1 ms 19 ms 20.9 ms Encoder Mode PLL activation to first code word TLEDON 90 ms 100 ms 110 ms LED ON Time TLEDOFF 450 ms 500 ms 550 ms LED OFF Time Communication from Transponder Reader to HCS473 TCMD 1.1 LFTE+100 s — 9.18 ms TTSCMD 1.1 LFTE+100 s — 9.18 ms Delay from Transponder Select ACK to next command TFINH 100 s1 LFTE — Time to leave LF on after last data bit’s rising edge Response from HCS473 to Transponder Reader TSF 1 ms+.9 LFTE 3.5 ms+1 LFTE 10 ms+1. 1LFTE Delay to wake-up Acknowledge sequence TTSACK .9 LFTE+14 s .9 LFTE-12 s 1 LFTE+30 s 1 LFTE 1.1 LFTE+49 s 1.1 LFTE+12 s Delay from TID pulse rising edge to TID acknowledge TID = 0 TID > 0 TTPACK 141 s 179 s 234 s Delay to Transport Code Acknowledge TWRT — 4 ms 10ms Delay to Write Acknowledge TAOACK 60 s 89 s 135 s Delay to anticollision off Acknowledge TIFF 5.07 ms 5.64 ms 6.2 ms Delay to IFF response - RF or LF response TREAD 184 s 227 s 286 s Delay to read response - RF or LF response THOP 17.1 ms 19 ms 20.9 ms Delay to hopping code response - RF or LF response TDAMP 1.08 LFTE 1.2 LFTE 1.32 LFTE Delay from detecting LC rising edge to first damp pulse TDEMOD 14.76 ms 16.4 ms 18 ms Demodulator mode window looking for edge on LC pin Timing Element TE TE 90 180 360 720 100 200 400 800 110 220 440 880 RFTE or LFTE RFBSL = LFBSL = 002 RFBSL = LFBSL = 012 RFBSL = LFBSL = 102 RFBSL = LFBSL = 112 Analog delays TFILTR — 15 s — HCS473 analog LF filter charge time TFILTF — 70 s — HCS473 analog LF filter discharge time TANTR Hardware design dependent Cumulative LF antenna delay when field is turned on TANTF Hardware design dependent Cumulative LF antenna delay when field is turned off Note 1: Fosc = 4 MHz. FOSC = 4 MHz may be centered at the designer’s choice of supply voltage (VDD) and temperature. 2: LFTE is based on the HCS473’s timing, not the timing of the transponder reader. Therefore LFTE is subject to HCS473 oscillator variation. 3: Response timing accounts for TFILTR but not for TANTR or TANTF, as they are design dependent. The system designer must compensate communication accordingly for TANTR and TANTF. 4: Timing parameters are characterized but not tested. |
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