MC68HC708MP16 Datasheet, PDF (327/398 Pages) Freescale Semiconductor, Inc – Microcontrollers

Input/Output (I/O) Ports
Figure 15-12 shows the port D input logic.
READ PTD ($0003)
PTDx
Figure 15-12. Port D Input Circuit
Reading address $0003 reads the voltage level on the pin. Table 15-1
summarizes the operation of the port D pins.
Table 15-4. Port D Pin Functions
PTD Bit
X⁽¹⁾
Pin Mode
Input, Hi-Z⁽²⁾
Accesses to PTD
Read
Pin
Write
PTD[6:0]⁽³⁾
1. X = don’t care
2. Hi-Z = high impedance
3. Writing affects data register, but does not affect input.
MC68HC708MP16 — Rev. 3.1
Freescale Semiconductor
Input/Output (I/O) Ports
Technical Data
327