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TMP92CM22
2007-02-16
92CM22-65
3.5.8 Port A (PA0 to PA2, PA7)
Port A is 4-bit general-purpose input port with pull-up resistor.
Figure 3.5.16 Port A
Port A Register
7 6 5 4 3 2 1 0
Bit symbol PA7 PA2 PA1 PA0
Read/Write R R
After reset Data from
external port
Data from external port
Figure 3.5.17 Register for Port A
Internal data bus
PA0, PA1,
PA2, PA7
PA read
Pull-up resistor
PA
(0028H)