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XC610111A016ML Datasheet(PDF) 11 Page - Torex Semiconductor |
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XC610111A016ML Datasheet(HTML) 11 Page - Torex Semiconductor |
11 / 27 page 11/27 XC6101 ~ XC6107, XC6111~ XC6117 Series ■NOTES ON USE 1. Please use this IC within the stated maximum ratings. Operation beyond these limits may cause degrading or permanent damage to the device. 2. When a resistor is connected between the VIN pin and the input, the VIN voltage drops while the IC is operating and a malfunction may occur as a result of the IC’s through current. For the CMOS output products, the VIN voltage drops while the IC is operating and malfunction may occur as a result of the IC’s output current. Please be careful with using the XC6111~XC6117 series (without hysteresis). 3. In order to stabilize the IC’s operations, please ensure that the VIN pin’s input frequency’s rise and fall times are more than 1 μs/V. 4. Noise at the power supply may cause a malfunction of the watchdog operation or the circuit. In such case, please strength the line between VIN and the GND pin and connect about 0.22μF of a capacitor between the VIN pin and the GND pin. 5. Protecting against a malfunction while the watchdog time out period, an ignoring time (no reaction time) occurs to the rise and fall times. Referring to the figure below, the ignoring time (no reaction time) lasts for 900μs at maximum. 6. The watchdog function can be disabled by connecting a three-state device to the WDI pin as a result of the high impedance state of the WDI pin. This is effective when the watchdog function is not required, for example, during data loading to the CPU. The WDI input is internally driven through a buffer (LOGIC) and series resistor (RWD) from the watchdog counter as showed in the block diagrams of page 4 and 5. The WDI input is designed for minimizing the input current by placing the series resistor (RWD) in the maximum resistance of 880kΩ. A voltage drop occurs in proportion to the leakage current of the three-state device multiplied by the resistance value of the series resistor (RWD) when the three-state device is in the state of high impedance. The voltage level must be reaching the threshold level of the WD so that a three-state device with small leakage current should be selected. The other series is available in the name of XC6121~XC6124 with the ON/OFF control pin for the watchdog function. When these series is used, external parts such as the three-state device is not required. ● No Reaction Time No reaction time (MAX 900μs) No reaction time (MAX 900μs) |
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