mc68hc05l25 Freescale Semiconductor, Inc, mc68hc05l25 Datasheet - Page 63

• Manufacturer Part Number: mc68hc05l25
• Description: M68hc05 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

7.3.5 I/O Pin Truth Tables
Table 7-7
Freescale Semiconductor
DDR
DDR
X
X
X
X
0
0
1
1
1
1
0
0
1
1
1
1
1. X is don’t care state.
2. Does not affect input, but is stored to data register latch
3. Do not turn on pullup R (RBH = 1) when using these pins as LCD ports.
1. X is don’t care state.
2. Does not affect input, but is stored to data register latch
3. Do not turn on pullup R (RBL = 1) when using these pins as LCD ports.
Output
Output
Latch
Latch
and
X
X
X
X
X
X
X
X
X
X
0
1
1
0
1
1
Table 7-8
LCDCR
LCDCR
PBEH
PBEL
0
0
1
1
1
1
1
1
0
0
1
1
1
1
1
1
summarize the input or output and LCD mode programming for port B.
Table 7-7. PB0–PB3/FP24–FP21 I/O Pin Functions
Table 7-8. PB4–PB7/FP20–FP17 I/O Pin Functions
BWOMH
BWOML
X
X
X
X
X
X
X
X
0
1
1
1
0
1
1
1
MC68HC05L25 Data Sheet, Rev. 3.1
RBH
RBL
X
X
X
X
0
1
0
1
0
1
0
1
0
1
0
1
OUT, OD, Pullup
OUT, OD, Pullup
LCD FP Output,
LCD FP Output,
LCD FP Output
LCD FP Output
I/O Pin Modes
I/O Pin Modes
Port IN, Pullup
OUT, OD, Hi-Z
Port IN, Pullup
OUT, OD, Hi-Z
Port IN, Hi-Z
OUT, CMOS
Port IN, Hi-Z
OUT, CMOS
OUT, OD
OUT, OD
Pullup
Pullup
3
3
DDRB0–DDRB3
DDRB0–DDRB3
DDRB0–DDRB3
DDRB0–DDRB3
DDRB0–DDRB3
DDRB0–DDRB3
DDRB0–DDRB3
DDRB0–DDRB3
DDRB4–DDRB7
DDRB4–DDRB7
DDRB4–DDRB7
DDRB4–DDRB7
DDRB4–DDRB7
DDRB4–DDRB7
DDRB4–DDRB7
DDRB4–DDRB7
Read/Write
Read/Write
Access to
Access to
DDRB0–
DDRB4–
DDRB3
DDRB7
Register Latch PB0–PB3
Register Latch PB4–PB7
Read
Latch
Latch
Latch
Latch
Read
Latch
Latch
Latch
Latch
Pin
Pin
Pin
Pin
0
0
0
0
Access to Data
Access to Data
Latch, Pin
Latch, Pin
Latch, Pin
Latch, Pin
Latch, Pin
Latch, Pin
Latch, Pin
Latch, Pin
Latch
Latch
Latch
Latch
Latch
Latch
Latch
Latch
Write
Write
Port B
2
2
2
2
2
2
2
2
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