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2 / 28 page Contents STM6321/6322STM6821/6822/6823/6824/6825 2/28 Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1.1 Active-low, push-pull reset output (RST) - STM6822/6823/6824/6825 . . 7 1.1.2 Active-low, open drain reset output (RST) - STM6321/6322/6822 . . . . . 7 1.1.3 Push-button reset input (MR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1.4 Watchdog input (WDI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1.5 Active-high reset output (RST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.1 Reset output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.2 Open drain RST output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.3 Push-button reset input (STM6322/6821/6822/6823/6825) . . . . . . . . . . . 11 2.4 Watchdog input (STM6321/6821/6822/6823/6824) . . . . . . . . . . . . . . . . . 11 2.5 Applications information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.5.1 Watchdog input current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.5.2 Ensuring a valid reset output down to VCC = 0 V . . . . . . . . . . . . . . . . . . 11 2.6 Interfacing to microprocessors with bidirectional reset pins . . . . . . . . . . . 12 3 Typical operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 5 DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 7 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 |
Số phần tương tự - STM6823SAWY6E |
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Mô tả tương tự - STM6823SAWY6E |
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