MC68HC11KW1 Datasheet, PDF (113/238 Pages) Motorola, Inc – High-density complementary metal oxide semiconductor HCMOS) microcontroller unit

6
PARALLEL INPUT/OUTPUT
The MC68HC11KW1 has up to 70 input/output lines and 10 input-only lines, depending on the
operating mode. To enhance the I/O functions, the data bus of this microcontroller is
non-multiplexed. The following table is a summary of the configuration and features of each port.
Table 6-1 Port configuration
6
Port
Input
pins
A
—
B
—
C
—
D
—
E
8
F
—
G
2
H
—
J
—
K
—
Output
pins
—
—
—
—
—
—
—
—
—
—
Bidirectional
pins
Alternative functions
8
Timer 1
8
High order address
8
Data bus
8
SCI and SPI
–
A/D converter
8
Low order address
6
Memory expansion and A/D converter
8
Chip selects and PWM
8
Timer 2
8
Timer 3
Note:
Do not confuse pin function with the electrical state of that pin at reset. All
general-purpose I/O pins that are configured as inputs at reset are in a high-impedance
state and the contents of the port data registers are undefined; in port descriptions, a
‘u’ indicates this condition. The pin function is mode dependent.
MC68HC11KW1
PARALLEL INPUT/OUTPUT
6-1