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On the same fashion, describe the path followed by the value of INTERNAL SIGNAL towards P0.x (see Figure 2 of the datasheet). Note that in this case, there is no pull-up resistor pulling the output value to VCC for a logic 1; instead, a FET is used, which is turned on only when both ADDRESS LOW/DATA and CONTROL signals are high. This is called a strong pull-up. However, strong pull-ups of PO and P2 can only be used when these ports are configured as memory buses (CONTROL 1) and not as a GPIO (CONTROL = 0), thus in the latter case, PO.x and P2 exhibit an open drain output when a logic 1 set on INTERNAL BUS. Figure 2. Port 0 Structure READ LATCH INTERNAL BUS WRITE TO LATCH READ PIN D ADDRESS LOW/ CONTROL DATA PO.X LATCH = 0 VDD (2) PO.x (1)

On the same fashion, describe the path followed by the value of INTERNAL SIGNAL towards P0.x (see Figure 2 of the datasheet). Note that in this case, there is no pull-up resistor pulling the output value to VCC for a logic 1; instead, a FET is used, which is turned on only when both ADDRESS LOW/DATA and CONTROL signals are high. This is called a strong pull-up. However, strong pull-ups of PO and P2 can only be used when these ports are configured as memory buses (CONTROL 1) and not as a GPIO (CONTROL = 0), thus in the latter case, PO.x and P2 exhibit an open drain output when a logic 1 set on INTERNAL BUS. Figure 2. Port 0 Structure READ LATCH INTERNAL BUS WRITE TO LATCH READ PIN D ADDRESS LOW/ CONTROL DATA PO.X LATCH = 0 VDD (2) PO.x (1)

Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
ChapterS: Safety, Basic Electricity And Ohm's Law
Section: Chapter Questions
Problem 8RQ: What is an MSDS?
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1. On the same fashion, describe the path followed by the value of INTERNAL SIGNAL towards P0.x (see Figure 2 of the datasheet). Note that in this case, there is no pull-up resistor pulling the output value to VCC for a logic 1; instead, a FET is used, which is turned on only when both ADDRESS LOW/DATA and CONTROL signals are high. This is called a strong pull-up. However, strong pull-ups of PO and P2 can only be used when these ports are configured as memory buses (CONTROL= 1) and not as a GPIO (CONTROL = 0), thus in the latter case, PO.x and P2 exhibit an open drain output when a logic 1 set on INTERNAL BUS. Figure 2. Port 0 Structure READ LATCH INTERNAL BUS WRITE TO LATCH READ PIN ADDRESS LOW/ CONTROL DATA DPO.X Q LATCH VDD (2) PO.x (1)
Transcribed Image Text:1. On the same fashion, describe the path followed by the value of INTERNAL SIGNAL towards P0.x (see Figure 2 of the datasheet). Note that in this case, there is no pull-up resistor pulling the output value to VCC for a logic 1; instead, a FET is used, which is turned on only when both ADDRESS LOW/DATA and CONTROL signals are high. This is called a strong pull-up. However, strong pull-ups of PO and P2 can only be used when these ports are configured as memory buses (CONTROL= 1) and not as a GPIO (CONTROL = 0), thus in the latter case, PO.x and P2 exhibit an open drain output when a logic 1 set on INTERNAL BUS. Figure 2. Port 0 Structure READ LATCH INTERNAL BUS WRITE TO LATCH READ PIN ADDRESS LOW/ CONTROL DATA DPO.X Q LATCH VDD (2) PO.x (1)
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