LFEBS12UB Freescale Semiconductor, LFEBS12UB Datasheet - Page 154

• Manufacturer Part Number: LFEBS12UB
• Description: KIT STUDENT LEARNING S12 DG128
• Manufacturer: Freescale Semiconductor

Specifications of LFEBS12UB

• Architecture: 8/16-bit
• Code Gen Tools Included: Code Warrior
• Silicon Manufacturer: Freescale
• Core Architecture: S12
• Core Sub-architecture: S12
• Silicon Core Number: MC9S12
• Silicon Family Name: S12D
• Kit Contents: HCS12 DG128 Learning Kit
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1. Read: Anytime.
Chapter 2 Port Integration Module (S12XEPIMV1)
2.3.62
2.3.63
154
Address 0x0269
Address 0x026A
Write:Never, writes to this register have no effect.
Field
Field
PTIJ
Reset
Reset
PTJ
PTJ
7-0
1
0
W
W
R
R
Port J general purpose input/output data—Data Register
This pin is associated with the TXD signal of SCI2.
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bit of this pin is set to 1, a read returns the value of the port register, otherwise the
buffered pin input state is read.
Port J general purpose input/output data—Data Register
This pin is associated with the TXD signal of SCI2 and chip select output CS3. The SCI function takes precedence
over the chip select and general purpose I/O function if the SCI2 is enabled. The chip select takes precedence over
the general purpose I/O.
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bit of this pin is set to 1, a read returns the value of the port register, otherwise the
buffered pin input state is read.
Port J input data—
This register always reads back the buffered state of the associated pins. This can also be used to detect overload
or short circuit conditions on output pins.
DDRJ7
PTIJ7
Port J Input Register (PTIJ)
Port J Data Direction Register (DDRJ)
u
0
7
7
= Unimplemented or Reserved
DDRJ6
PTIJ6
Table 2-57. PTJ Register Field Descriptions (continued)
u
0
6
6
Figure 2-61. Port J Data Direction Register (DDRJ)
Table 2-58. PTIJ Register Field Descriptions
MC9S12XE-Family Reference Manual , Rev. 1.23
Figure 2-60. Port J Input Register (PTIJ)
DDRJ5
PTIJ5
u
0
5
5
DDRJ4
PTIJ4
u
0
4
4
Description
Description
u = Unaffected by reset
DDRJ3
PTIJ3
3
u
3
0
DDRJ2
PTIJ2
u
0
2
2
Access: User read/write
Freescale Semiconductor
DDRJ1
PTIJ1
u
0
1
1
Access: User read
DDRJ0
PTIJ0
u
0
0
0
(1)
(1)