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MCP2140AT-I/P датащи(PDF) 39 Page - Microchip Technology |
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MCP2140AT-I/P датащи(HTML) 39 Page - Microchip Technology |
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39 / 60 page ![]() © 2007 Microchip Technology Inc. DS22050A-page 39 MCP2140A FIGURE 4-8: RXPD/RXPDREF WAVEFORMS TABLE 4-8: RXPD/RXPDREF REQUIREMENTS AC Specifications Electrical Characteristics: Standard Operating Conditions (unless otherwise specified): Operating Temperature: -40 °C ≤ TA ≤ +85°C (industrial) Operating Voltage VDD range is described in Section 4.1 “DC Characteristics” Param. No. Sym Characteristic Min Typ Max Units Conditions IR110A TRXPDBIT Receive Baud Rate 384 — 384 TOSC BAUD = 9600 IR132 TRXPDP RXPD/RXPDREF bit period (1) —8 — TBITCLK IRD06 0 VRXPDD Δ Quiescent Delta Voltage between RXPD and RXPDREF 20 — — mV IRD06 1 VRXPDE IR Pulse Detect Delta Voltage (RXPD to RXPDREF) 30 — — mV RXPD signal must cross RXPDREF signal level IR133 TRESP Response Time (2) — — 600 * ns * These parameters characterized but not tested. Note 1: TBITCLK = TRXBIT/16. 2: Response time measured with RXPDREF at (VDD - 1.5V)/2, while RXPD transitions from VSS to VDD. BITCLK RXPD 01 0 0 0 1 IR131A IR110A IR132 IR132 IR132 IR132 IR132 IR132 Start Bit Data bit 7 Data bit 6 Data bit 5 Data bit ... Start Bit Data bit 7 Data bit 6 Data bit 5 Data bit ... RXPDREF RXPD RXPDREF IRD160 IRD161 |
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