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M93S46-W 数据表(PDF) 7 Page - STMicroelectronics |
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M93S46-W 数据表(HTML) 7 Page - STMicroelectronics |
7 / 32 page M93S46-W M93S56-W M93S66-W Signal description DocID5124 Rev 7 7/32 transmission of the instruction and, for a Write instruction, until the completion of the internal write cycle (tW). In order to secure a stable DC supply voltage, it is recommended to decouple the VCC line with a suitable capacitor (usually of the order of 10 nF to 100 nF) close to the VCC/VSS package pins. 2.8.2 Device reset In order to prevent inadvertent write operations during power-up, a power-on-reset (POR) circuit is included. At power-up, the device does not respond to any instruction until VCC reaches the internal reset threshold voltage When VCC passes over the POR threshold, the device is reset and is in the following state: • in Standby Power mode • deselected The device must not be accessed until VCC reaches a valid and stable VCC voltage within the specified [VCC(min), VCC(max)] range defined in Table 5: "Operating conditions (M93Sx6-W)". 2.8.3 Power-up conditions When the power supply is turned on, VCC must rise continuously from VSS to VCC. During this time, the Chip Select (S) line is not allowed to float but should be driven low. It is therefore recommended to connect the S line to VCC via a suitable pull-down resistor. 2.8.4 Power-down During power-down (continuous decrease in the VCC supply voltage below the minimum VCC operating voltage defined in Table 5: "Operating conditions (M93Sx6-W)", the device must be: • deselected (S driven low) • in Standby Power mode (there should not be any internal write cycle in progress). |
类似零件编号 - M93S46-W |
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类似说明 - M93S46-W |
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