mcf51ac256a Freescale Semiconductor, Inc, mcf51ac256a Datasheet - Page 129

• Manufacturer Part Number: mcf51ac256a
• Description: Mcf51ac Flexis
• Manufacturer: Freescale Semiconductor, Inc

6.5.9.4
6.5.9.5
Freescale Semiconductor
Reset:
Reset:
PTJPEn
PTJSEn
PTJDSn
Field
Field
Field
7–0
7–0
7–0
W
W
R
R
PTJDS7
PTJSE7
Internal Pull Enable for Port J Bits — Each of these control bits determines if the internal pullup device is
enabled for the associated PTJ pin. For port J pins that are configured as outputs, these bits have no effect and
the internal pull devices are disabled.
0 Internal pullup device disabled for port J bit n.
1 Internal pullup device enabled for port J bit n.
Output Slew Rate Enable for Port J Bits — Each of these control bits determines if the output slew rate control
is enabled for the associated PTJ pin. For port J pins that are configured as inputs, these bits have no effect.
0 Output slew rate control disabled for port J bit n.
1 Output slew rate control enabled for port J bit n.
Output Drive Strength Selection for Port J Bits — Each of these control bits selects between low and high
output drive for the associated PTJ pin. For port J pins that are configured as inputs, these bits have no effect.
0 Low output drive strength selected for port J bit n.
1 High output drive strength selected for port J bit n.
Port J Slew Rate Enable Register (PTJSE)
0
Port J Drive Strength Selection Register (PTJDS)
0
7
7
MCF51AC256 ColdFire Integrated Microcontroller Reference Manual, Rev. 5
Figure 6-46. Drive Strength Selection for Port J Register (PTJDS)
PTJDS6
PTJSE6
Figure 6-45. Slew Rate Enable for Port J Register (PTJSE)
0
0
6
6
Table 6-43. PTJPE Register Field Descriptions
Table 6-44. PTJSE Register Field Descriptions
Table 6-45. PTJDS Register Field Descriptions
PTJSE5
PTJDS5
0
0
5
5
PTJSE4
PTJDS4
0
0
4
4
Description
Description
Description
PTJSE3
PTJDS3
3
0
3
0
PTJDS2
PTJSE2
0
0
2
2
Parallel Input/Output Control
PTJDS1
PTJSE1
0
0
1
1
PTJDS0
PTJSE0
0
0
0
0
6-25