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MCP47X6A0T-E bảng dữ liệu(PDF) 7 Page - Microchip Technology |
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MCP47X6A0T-E bảng dữ liệu(HTML) 7 Page - Microchip Technology |
7 / 86 page © 2011-2012 Microchip Technology Inc. DS22272C-page 7 MCP4706/4716/4726 1.1 I2C Mode Timing Waveforms and Requirements FIGURE 1-1: Power-On and Brown-Out Reset Waveforms. FIGURE 1-2: I2C Power-Down Command Timing. TABLE 1-1: RESET TIMING Timing Characteristics Standard Operating Conditions (unless otherwise specified) Operating Temperature -40°C ≤ T A ≤ +125°C (extended) All parameters apply across the specified operating ranges unless noted. VDD = +2.7V to 5.5V, 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ devices. Typical specifications represent values for VDD = 5.5V, TA = +25°C. Parameters Sym Min Typ Max Units Conditions Power-Up Reset Delay tPORD — 60 — µs Monitor ACK bit response to ensure device responds to command. Brown-Out Reset Delay tBORD —1 — µs VDD transitions from VDD(MIN) → > VPOR VOUT driven to VOUT disabled Power-Down Disable Time Delay TPDD —2.5 — µs VDD = 5V PD1:PD0 → 00 (from ‘01’, ‘10’, or ‘11’), from falling edge SCL at end of ACK bit. —5 — µs VDD = 3V PD1:PD0 → 00 (from ‘01’, ‘10’, or ‘11’), from falling edge SCL at end of ACK bit. Power-Down Enable Time Delay TPDE — 10.5 — µs PD1:PD0 → 01, ‘10’, or ‘11’ (from ‘00’), from falling edge SCL at end of ACK bit. VDD SDA tPORD tBORD VOUT SCL VIH VIH VPOR (VBOR) VOUT pulled down by internal 500 k Ω (typical) resistor I2C™ Interface is operational SDA SCL ACK Stop Start ACK VOUT tPDE tPDD |
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