MC68HC05E0 Datasheet, PDF (54/96 Pages) Motorola, Inc – High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit

6
Data
Direction
Register
Data
Register
Output
I/O
Buffer
Pin
Input
Data
Reg.
Input
I/O
(a)
Typical Port
Data Direction
Register
Typical Port
Register
DDR7 DDR6 DDR5 DDR4 DDR3 DDR2 DDR1 DDR0
I/O Port Lines
Px7 Px6 Px5 Px4 Px3 Px2 Px1 Px0
(b)
Port Data
Port DDR
Internal
Logic
VDD
P*
PAD
N*
IP
Notes:
1. * Denotes devices have
same physical size and
are enhancement type.
2. IP = Input Protection.
3. Latch-up Protection not shown.
(c)
Figure 6-1 Bidirectional I/O Port Structure
MOTOROLA
6-2
PARALLEL INPUT/OUTPUT PORTS
MC68HC05E0