Chapter 7
I/O Port
VII - 4 Overview
7.1.2 Block Diagram
■ Block Diagram (P10, P11, P12, P13, P14, P80, P81, P82, P83)
P10 to P14, P80 to P83 are dual-purpose ports that also serve as external interrupt pins; IRQ00 to 08.
Figure:7.1.1 Block Diagram (P10 to P14, P80 to P83)
■ Block Diagram (P17, P20, P21, P22, P23, P24, P25, P26, P27)
P17, P20 to P27 are dual-purpose ports that serve as serial interface pins.
Figure:7.1.2 Block Diagram (P17, P20 to P27)
Internal data bus
PnOUT
PnPLU
P10 to P14
P80 to P83
PnDIR
PnIN
IRQ00 to 08
Noise filter
IOCLK
P... indicates 1 bit of a register.
Internal data bus
PnOUT
PnDIR
PnMD
PnIN
P...
indicates 1 bit of a register.
M
P
X
SBO0,1,2
SBT0,1,2
SBT0,1,2
SBI0,1,2
PnPLU
P17
P20 to P27
To Next Page
Loading...
