MC68HC05C8A Datasheet, PDF (39/116 Pages) Motorola, Inc – Microcontrollers

Input/Output Programming
READ DDRx
WRITE DDRx
RESET
DATA DIRECTION
REGISTER x BIT
WRITE PORTx
PORT x DATA
REGISTER BIT
(LATCHED OUTPUT)
[3]
[1]
I/O
PIN
READ PORTx
[2]
[1] This output buffer enables the latched output to drive the pin when DDR bit is 1 (output mode).
[2] This input buffer is enabled when DDR bit is 0 (input mode).
[3] This input buffer is enabled when DDR bit is 1 (output mode).
Figure 7-2. I/O Circuitry
MC68HC05C8A • MC68HCL05C8A • MC68HSC05C8A Data Sheet, Rev. 5.1
Freescale Semiconductor
39