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STM6513 Datasheet(PDF) 8 Page - STMicroelectronics |
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STM6513 Datasheet(HTML) 8 Page - STMicroelectronics |
8 / 29 page Pin descriptions STM6513 8/29 Doc ID 16490 Rev 2 3 Pin descriptions 3.1 Power supply (VCC) This pin is used to provide the power to the Smart Reset device and to monitor the power supply. A 0.1 µF decoupling ceramic capacitor is recommended to be connected between VCC and VSS pins. 3.2 Ground (VSS) This is the ground for the device and all supplies. 3.3 Smart Reset inputs (SR0, SR1) Push-button Smart Reset inputs. Both inputs need to be held active at the same time for at least tSRC to activate the reset outputs. When only one Smart Reset input is used, connect the unused one permanently to VSS. 3.4 User-programmable Smart Reset delay (TSR pin) Used to allow the user to program the setup time before the push-buttons action is validated by reset output. Controlled by different voltage levels on the TSR pin: when connected to ground, tSRC = 2 s; when left open, tSRC = 6 s; when connected to VCC, tSRC = 10 s (all times are minimum). TSR is a DC-type input, intended to be either permanently grounded, permanently connected to VCC or permanently left open. If left open, for improved system glitch immunity it is strongly recommended to connect a 0.1 µF decoupling ceramic capacitor between the TSR and VSS pins. 3.5 Reset outputs (RST1, RST2) Reset outputs, RST1 active-high, push-pull type, RST2 active-low, open-drain. 3.6 Adjustable output reset timeout period input pin (TRECADJ) The output reset timeout period (tREC1) on RST1 is adjustable by connecting an external capacitor CtREC to the TRECADJ pin. Calculated tREC and CtREC examples are given in Table 2. Refer also to Table 5. |
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