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STM6825RWY6F датащи(PDF) 10 Page - STMicroelectronics |
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STM6825RWY6F датащи(HTML) 10 Page - STMicroelectronics |
10 / 28 page Operation STM6321/6322STM6821/6822/6823/6824/6825 10/28 2 Operation 2.1 Reset output The STM6xxx Supervisor asserts a reset signal to the MCU whenever VCC goes below the reset threshold (VRST), a watchdog time-out occurs, or when the Push-button Reset Input (MR) is taken low. Reset is guaranteed valid for VCC < VRST down to VCC =1 V for TA = 0°C to 85°C. During power-up, once VCC exceeds the reset threshold an internal timer keeps reset low for the reset time-out period, trec. After this interval reset is de-asserted. Each time RST is asserted, it stays low for at least the reset time-out period (trec). Any time VCC goes below the reset threshold the internal timer clears. The reset timer starts when VCC returns above the reset threshold. 2.2 Open drain RST output The STM6321/6322/6822 have an active-low, open drain reset output. This output structure will sink current when RST is asserted. Connect a pull-up resistor from RST to any supply voltage up to 6 V (see Figure 11). Select a resistor value large enough to register a logic low, and small enough to register a logic high while supplying all input current and leakage paths connected to the reset output line. A 10 k Ω pull-up resistor is sufficient in most applications. Figure 11. STM6321/6322/6822 open drain RST output with multiple supplies 1. STM6322/6822 2. STM6321/6822 3. STM6321/6322 AI09137 STM6XXX RST MR (1) WDI (2) RST (3) GND 10k VCC 5V System 5.0V 3.3V |
Аналогичный номер детали - STM6825RWY6F |
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Аналогичное описание - STM6825RWY6F |
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