CP3BT26G18NEP/HAPB National Semiconductor, CP3BT26G18NEP/HAPB Datasheet - Page 73

• Manufacturer Part Number: CP3BT26G18NEP/HAPB
• Manufacturer: National Semiconductor

Specifications of CP3BT26G18NEP/HAPB

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 128
• Package Type: LQFP
• Lead Free Status / RoHS Status: Not Compliant

14.2
OPEN-DRAIN OPERATION
A port pin can be configured to operate as an inverting
open-drain output buffer. To do this, the CPU must clear the
bit in the data output register (PxDOUT) and then use the
port direction register (PxDIR) to set the value of the port
pin. With the direction register bit set (direction = out), the
value zero is forced on the pin. With the direction register bit
clear (direction = in), the pin is placed in the TRI-STATE
mode. If desired, the internal weak pull-up can be enabled
to pull the signal high when the output buffer is in TRI-
STATE mode.
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