MC68HC705BD3 FREESCALE [Freescale Semiconductor, Inc], MC68HC705BD3 Datasheet - Page 26

• Manufacturer Part Number: MC68HC705BD3
• Description: High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

2
2-6
INTERNAL LOGIC
CONNECTIONS
MC68HC05
INTERNAL
DATA DIRECTION REGISTER
PORT DATA
PORT DDR
TYPICAL PORT REGISTER
TYPICAL PORT
I/O PORT LINES
LATCHED OUTPUT
DATA DIRECTION
REGISTER BIT
DATA BIT
DDR 7
Figure 2-3 Parallel Port I/O Circuitry
PIN DESCRIPTION AND I/O PORTS
Px7
7
DDR 6
Px6
6
&
+
REGISTER
DDR 5
INPUT
Px5
5
BIT
(a)
(b)
(c)
DDR 4
Px4
4
INPUT I/O
V
N
P
DD
DDR 3
Px3
3
NOTE:
(1) IP = INPUT PROTECTION
(2) LATCH-UP PROTECTION NOT SHOWN
IP
DDR 2
Px2
2
OUTPUT
PAD
DDR 1
Px1
1
DDR 0
Px0
0
MC68HC05BD3
I/O PIN
TPG