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TC1270ANLCVRCTR Datasheet(PDF) 5 Page - Microchip Technology |
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TC1270ANLCVRCTR Datasheet(HTML) 5 Page - Microchip Technology |
5 / 40 page © 2007 Microchip Technology Inc. DS22035B-page 5 TC1270A/70AN/71A 1.1.2 TIMING DIAGRAMS AND SPECIFICATIONS FIGURE 1-2: MR PIN AND RESET PIN WAVEFORM FIGURE 1-3: DEVICE VOLTAGE AND RESET PIN (ACTIVE LOW) WAVEFORM TABLE 1-1: RESET AND DEVICE RESET TIMER REQUIREMENTS Electrical Characteristics: Unless otherwise noted, VDD = 5V for L/M versions, VDD = 3.3V for T/S versions, VDD = 3V for R version, TA = -40°C to +125°C. Typical values are at TA = +25°C. Parameter Sym Min Typ(1) Max Units Test Conditions V DD to Reset Delay tRD —50 — µs VDD = VTRIP(MAX) to VTRIP(MIN) –125 mV Reset Active Timeout Period TC127XAxBVyy (3) tRST 1.09 2.19 4.38 ms VDD = VTRIP(MAX) TC127XAxCVyy (3) 17.5 35 70 ms VDD = VTRIP(MAX) TC127XAxVyy (3) 140 280 560 ms VDD = VTRIP(MAX) MR Minimum Pulse Width tMR 10 — — µs MR Noise Immunity tMRNI —0.1 — µs MR to Reset Propagation Delay tMD —0.2 — µs Note 1: Unless otherwise stated, data in the Typical (“Typ”) column is at 5V, +25 °C. 2: RST output for TC1270A, RST output for TC1271A. 3: TC127XA refers to either the TC1270A, TC1270AN or TC1271A device. “x” indicated the selected Voltage Trip Point, while “yy” indicates the package code. MR RST tRST tMR RST tMD tMRNI VTRIP(MAX) VTRIP(MIN) 1V VDD VTRIP tRST RST(1) RST tRST tRD VDD < 1V is outside the device operating specification. The RST (or RST) output state is unknown while VDD < 1V. Note 1: The TC1270AN requires an external pull-up resistor. |
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