MC68HC908JK3 MOTOROLA [Motorola, Inc], MC68HC908JK3 Datasheet - Page 152

• Manufacturer Part Number: MC68HC908JK3
• Description: MC68HC908JK1
• Manufacturer: MOTOROLA [Motorola, Inc]

I/O Ports
Technical Data
152
PTAPUE Bit
1. X = Don’t care.
2. I/O pin pulled to V
3. Writing affects data register, but does not affect input.
4. Hi-Z = High Impedence
1
0
X
DDRA
Bit
0
0
1
DD
Address:
PTA6EN — Enable PTA6 on OSC2
PTAPUE[6:0] — Port A Input Pull-up Enable bits
Table 12-1
Reset:
by internal pull-up.
Read:
Write:
PTA Bit
This read/write bit configures the OSC2 pin function when RC
oscillator option is selected. This bit has no effect for X-tal oscillator
option.
These read/write bits are software programmable to enable pull-up
devices on port A pins
Figure 12-5. Port A Input Pull-up Enable Register (PTAPUE)
X
X
X
(1)
1 = OSC2 pin configured for PTA6 I/O, and has all the interrupt and
0 = OSC2 pin outputs the RC oscillator clock (RCCLK)
1 = Corresponding port A pin configured to have internal pull if its
0 = Pull-up device is disconnected on the corresponding port A pin
Table 12-1. Port A Pin Functions
PTA6EN PTAPUE6 PTAPUE5 PTAPUE4 PTAPUE3 PTAPUE2 PTAPUE2 PTAPUE0
$000D
Bit 7
pull-up functions.
DDRA bit is set to 0
regardless of the state of its DDRA bit.
0
Input, Hi-Z
I/O Pin Mode
Input, V
summarizes the operation of the port B pins.
Output
DD
6
0
(2)
(4)
I/O Ports
Accesses to DDRB
DDRA6-DDRA0
DDRA6-DDRA0
DDRA6-DDRA0
5
0
Read/Write
0
4
PTA6-PTA0
0
3
Read
Pin
Pin
MC68H(R)C908JL3
Accesses to PTB
2
0
PTA6-PTA0
PTA6-PTA0
PTA6-PTA0
Write
1
0
MOTOROLA
—
(3)
(3)
Rev. 1.0
Bit 0
0