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MCP1321T-46LE/OT Datasheet(PDF) 9 Page - Microchip Technology |
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MCP1321T-46LE/OT Datasheet(HTML) 9 Page - Microchip Technology |
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9 / 52 page  2005-2012 Microchip Technology Inc. DS21985D-page 9 MCP131X/2X FIGURE 1-1: Device Voltage and Reset Pin Waveforms. TABLE 1-1: DEVICE VOLTAGE AND RESET PIN TIMINGS Electrical Specifications: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 k (only MCP1320, MCP1321, and MCP1322), TA = -40°C to +125°C. Parameters Sym Min Typ Max Units Conditions Falling VDD Trip Point Detected to RST or RST Active tRPD — 650 — µs VDD ramped from VTRIPMAX + 250 mV down to VTRIPMIN – 200 mV, VDD falling @ 5 mV/µs, CL = 50 pF (Note 1) VDD Rise Rate tRR Note 3 Reset active time (MR Rising Edge, POR/BOR Inactive, or WDT time out) to RST/RST Inactive tRST 1.0 1.4 2.0 ms Note 2 20 30 40 ms Note 2 140 200 280 ms Standard Time Out 1120 1600 2240 ms Note 2 RST Rise Time after RST Active (Push-Pull Outputs only) tRT — 5 — µs For RST 10% to 90% of VDD, CL = 50 pF (Note 1) RST Rise Time after RST Inactive (Push-Pull Outputs only) —5 — µs For RST 10% to 90% of VDD, CL = 50 pF (Note 1) RST Fall Time after RST Inactive tFT — 5 — µs For RST 90% to 10% of VDD, CL = 50 pF (Note 1) RST Fall Time after RST Active — 5 — µs For RST 90% to 10% of VDD, CL = 50 pF (Note 1) Note 1: These parameters are for design guidance only and are not 100% tested. 2: Custom ordered Reset active time; minimum order volume requirement. 3: Designed to be independent of VDD rise rate. Device characterization was done with a rise rate as slow as 0.1 V/s (@ +25°C). VTRIPMAX VTRIPMIN VTRIP 1V VDD VTRIPAC + VHYS tRST RST RST tRR tRST tRPD VDD < 1V is outside the device operating specification. The RST (or RST) output state is unknown while VDD < 1V. |
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