MC68HC05K1 FREESCALE [Freescale Semiconductor, Inc], MC68HC05K1 Datasheet - Page 75

• Manufacturer Part Number: MC68HC05K1
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

MC68HC05K0 • MC68HC05K1 — Rev. 2.0
X = Don’t care
U = Unde
X = Don’t care
U = Unde
3-Pin Osc.
Pulldown
Option
Mask
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
Mask Options
fin
fin
ed
ed
Pulldowns
PDIB0
X
X
0
0
1
1
Control Bits
Yes
Yes
Yes
Yes
No
No
DDRB0
When a port B pin is programmed as an output, reading the port bit reads
the value of the data latch and not the voltage on the pin itself. When a
port B pin is programmed as an input, reading the port bit reads the
voltage level on the pin. The data latch can always be written, regardless
of the state of its DDR bit.
operation of the port B pins.
PDIB1
0
1
0
1
0
1
Freescale Semiconductor, Inc.
X
X
0
0
1
1
Control Bits
Table 7-3. PB1/OSC3 Pin Functions
For More Information On This Product,
Table 7-2. PB0 Pin Functions
DDRB1
pulldown on
Pin Mode
Input, hi-z
Input, hi-z
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0
1
0
1
0
1
Parallel Input/Output (I/O)
Output
Output
Output
Input,
PB0
pulldown on
PB1/OSC3
Pin Mode
Input, hi-z
Input, hi-z
Output
Output
Output
Input,
Read
Table 7-2
U
U
U
U
U
U
Accesses
to PDRB
Read
U
U
U
U
U
U
Accesses
to PDRB
PDIB0
PDIB0
PDIB0
PDIB0
PDIB0
PDIB0
Write
and
PDIB1
PDIB1
PDIB1
PDIB1
PDIB1
PDIB1
Write
Table 7-3
Read/Write
Accesses
to DDRB
DDRB0
DDRB0
DDRB0
DDRB0
DDRB0
DDRB0
Read/Write
Accesses
to DDRB
DDRB1
DDRB1
DDRB1
DDRB1
DDRB1
DDRB1
Parallel Input/Output (I/O)
summarize the
Read
PB0
PB0
PB0
Pin
Pin
Pin
Read
PB1
PB1
PB1
Technical Data
to PORTB
Accesses
Pin
Pin
Pin
Accesses
to PORTB
Write
Write
PB0
PB0
PB0
PB0
PB0
PB0
Port B
PB1
PB1
PB1
PB1
PB1
PB1