Datasheet

Input/Output (I/O) Ports
MC68HC908GZ60 • MC68HC908GZ48 • MC68HC908GZ32 Data Sheet, Rev. 6
188 Freescale Semiconductor
Figure 13-25. Port G I/O Circuit
Table 13-8. Port G Pin Functions
DDRG
Bit
PTG
Bit
I/O Pin
Mode
Accesses to DDRG Accesses to PTG
Read/Write Read Write
0
X
(1)
1. X = Don’t care
Input, Hi-Z
(2)
2. Hi-Z = High impedance
DDRG7–DDRG0 Pin
PTG7–PTG0
(3)
3. Writing affects data register, but does not affect input.
1 X Output DDRG7–DDRG0 PTG7–PTG0 PTG7–PTG0
READ DDRG ($0445)
WRITE DDRG ($0445)
RESET
WRITE PTG ($0441)
READ PTG ($0441)
PTGx
DDRGx
PTGx
INTERNAL DATA BUS