MC68HC08AZ60ACFU MOTOROLA [Motorola, Inc], MC68HC08AZ60ACFU Datasheet - Page 336

• Manufacturer Part Number: MC68HC08AZ60ACFU
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

I/O Ports
Advance Information
336
1. X = don’t care
2. Hi-Z = high impedance
3. Writing affects data register, but does not affect input.
DDRF Bit
0
1
Figure 20-18
When bit DDRFx is a logic one, reading address $0009 reads the PTFx
data latch. When bit DDRFx is a logic zero, reading address $0009 reads
the voltage level on the pin. The data latch can always be written,
regardless of the state of its data direction bit.
the operation of the port F pins.
PTF Bit
X
X
(1)
READ DDRF ($000D)
WRITE DDRF ($000D)
WRITE PTF ($0009)
READ PTF ($0009)
Table 20-7. Port F Pin Functions
shows the port F I/O logic.
I/O Pin Mode
Input, Hi-Z
Output
Figure 20-18. Port F I/O Circuit
I/O Ports
RESET
(2)
Accesses to
Read/Write
DDRF[6:0]
DDRF[6:0]
DDRFx
DDRF
PTFx
Table 20-7
MC68HC08AZ60A — Rev 0.0
PTF[6:0]
Read
Pin
Accesses to PTF
summarizes
PTF[6:0]
PTF[6:0]
MOTOROLA
Write
PTFx
(3)