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AM79C987 数据表(PDF) 6 Page - Advanced Micro Devices |
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AM79C987 数据表(HTML) 6 Page - Advanced Micro Devices |
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6 / 30 page ![]() 6 Am79C987 PRELIMINARY CS Chip Select Input, Active LOW The chip-select input, when asserted, enables a read from or a write to the 8-bit parallel port of the HIMIB device. RDY Ready Output, Open Drain Ready is driven LOW at the start of every read or write cycle and is released when the HIMIB device is ready to complete the transaction. INT Interrupt Output, Active LOW, Open Drain Interrupt is driven LOW when any of the unmasked (enabled) interrupts occur. V DD Power This pin supplies +5 V to the device. Connect to DV DD of the IMR+ device. V SS Ground These two pins are the 0 V reference for the device. Connect to DV SS of the IMR+ device. |
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