XC68HC08KH12 Motorola, XC68HC08KH12 Datasheet - Page 202

• Manufacturer Part Number: XC68HC08KH12
• Description: MICROCONTROLLER
• Manufacturer: Motorola

I/O Ports
12.8 Port F
12.8.1 Port F Data Register (PTF)
Advance Information
202
Function:
Alternate
Address:
Port F is an 8-bit general-purpose bidirectional I/O port that shares its
pins with the keyboard interrupt module (KBI). All Port F pins have built-
in schmitt triggered input and software configurable pull-up.
The port F data register contains a data latch for each of the eight port F
pins.
PTF[7:0] — Port F Data Bits
The PFPE[7:0] bits in the port F keyboard pull-up enable register enable
individual pull-ups on port F pins if the respective pin is configured as an
input.
Reset:
Read:
Write:
These read/write bits are software programmable. Data direction of
each port F pin is under the control of the corresponding bit in data
direction register F. Reset has no effect on port F data.
The port-F keyboard interrupt enable bits, KBFIE7—KBFIE0, in the
port-F keyboard interrupt enable register (KBFIER), enable the port F
pins as external interrupt pins.
Module
(See 15.6.3.3 Port-F Pull-up Enable
$0009
PTF7
KBF7
Bit 7
(KBI).
Figure 12-19. Port F Data Register (PTF)
PTF6
KBF6
6
I/O Ports
PTF5
KBF5
5
Unaffected by reset
PTF4
KBF4
See Section 15. Keyboard Interrupt
4
PTF3
KBF3
3
MC68HC(7)08KH12
Register.)
KBF2
PTF2
2
KBF1
PTF1
1
MOTOROLA
—
Rev. 1.0
KBF0
PTF0
Bit 0