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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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ADP5588 bảng dữ liệu(PDF) 11 Page - Analog Devices |
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ADP5588 bảng dữ liệu(HTML) 11 Page - Analog Devices |
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11 / 28 page  ADP5588 Rev. A | Page 11 of 28 YES GENERATE KEYLOCK INTERRUPT START MASK TIMER = 0 KEY PRESS DETECTED NO NO YES NO NO NO YES YES YES NO YES YES YES NO YES YES NO NO YES NO GENERATE KE INTERRUPT START MASK TIMER MASK TIMER EXPIRES MASK TIMER EXPIRES FIRST UNLOCK KEY DETECTED SECOND UNLOCK KEY DETECTED START UNLOCK1 TO UNLOCK2 UNLOCK1 TO UNLOCK2 TIMER EXPIRES KEY PRESS DETECTED START UNLOCK1 TO UNLOCK2 FIRST UNLOCK KEY DETECTED GENERATE KEYLOCK INTERRUPT SECOND UNLOCK KEY DETECTED UNLOCK1 TO UNLOCK2 TIMER EXPIRES NO Figure 10. Keypad Lock Interrupt Mask Timer Flowchart Debouncing The ADP5588 has a 50 μs debounce time for GPIOs configured as GPIs and rows in keypad scanning mode. The reset line always has a 50 μs debounce time. General Purpose Outputs (GPOs) The ADP5588 allows the user to configure all or some of its GPIOs as GPOs. These GPOs can be used as extra enables for the host processor or simply as trigger outputs. When configured as an output (GPO), a digital buffer drives the pin to 0 V for a 0 and to VCC for a 1. To set any GPIO as a GPO, make sure that the corresponding bits in Register 0x1D through Register 0x1F are set for GPIO mode; then use Register 0x23 through Register 0x25 to set the corresponding bits for GPO mode. Power-On Reset For built-in power-up initialization for applications lacking a power-on reset signal, a reset pin, RST, allows the user to reset the registers to default values in the event of a brownout or other reset conditions. Ambient Light Sensing The ADP5588 has built in light sensor comparator inputs to detect ambient light conditions. An ADC samples the output of external photosensors connected to the comparator inputs, and the result is fed into programmable trip comparators. The ADC has an input range of 0 μA to 1000 μA (typical). The device can handle up to two photosensors (use Register 0x30 through Register 0x3A to configure the photosensor inputs). |
Số phần tương tự - ADP5588 |
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Mô tả tương tự - ADP5588 |
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