MC68HC908AB32 MOTOROLA [Motorola, Inc], MC68HC908AB32 Datasheet - Page 329
MC68HC908AB32
Manufacturer Part Number
MC68HC908AB32
Description
HCMOS Microcontroller Unit
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908AB32.pdf
(392 pages)
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17.8 Port F
17.8.1 Port F Data Register (PTF)
MC68HC908AB32
MOTOROLA
Alternative Function:
Additional Function:
—
Rev. 1.0
Address:
When DDREx is a logic 1, reading address $0008 reads the PTEx data
latch. When DDREx is a logic 0, reading address $0008 reads the
voltage level on the pin. The data latch can always be written, regardless
of the state of its data direction bit.
Table 17-6
Port F is an 8-bit special function port that shares six of its pins with the
timer interface modules (TIMA and TIMB).
The port F data register contains a data latch for each of the eight port F
pins.
Notes:
Reset:
1. X = don’t care.
2. Hi-Z = high impedance.
3. Writing affects data register, but does not affect the input.
Read:
Write:
Freescale Semiconductor, Inc.
DDRE
Bit
0
1
For More Information On This Product,
Input pullup Input pullup Input pullup Input pullup Input pullup Input pullup Input pullup Input pullup
$0009
PTF7
Bit 7
Figure 17-18. Port F Data Register (PTF)
summarizes the operation of the port E pins.
Go to: www.freescale.com
PTE Bit
Input/Output (I/O) Ports
X
X
(1)
PTF6
6
Table 17-6. Port E Pin Functions
Input, Hi-Z
TBCH1
PTF5
I/O Pin
Output
Mode
5
(2)
Unaffected by reset
TBCH0
PTF4
4
Read/Write
DDRE[7:0]
DDRE[7:0]
Accesses
to DDRE
TBCH3
PTF3
3
TBCH2
PTF2
PTE[7:0]
2
Read
Accesses to PTE
Input/Output (I/O) Ports
Pin
TACH3
PTF1
1
Technical Data
PTE[7:0]
PTE[7:0]
Write
TACH2
PTF0
Bit 0
Port F
329
(3)
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