MC9S08DZ16 FREESCALE [Freescale Semiconductor, Inc], MC9S08DZ16 Datasheet - Page 92

• Manufacturer Part Number: MC9S08DZ16
• Description: 8-Bit HCS08 Central Processor Unit (CPU)
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Chapter 6 Parallel Input/Output Control
6.5.1.5
6.5.1.6
92
PTADS[7:0]
Reset:
Reset:
PTAMOD
PTAACK
PTAIE
PTAIF
Field
Field
7:0
3
2
1
0
W
W
R
R
PTADS7
Output Drive Strength Selection for Port A Bits — Each of these control bits selects between low and high
output drive for the associated PTA pin. For port A pins that are configured as inputs, these bits have no effect.
0 Low output drive strength selected for port A bit n.
1 High output drive strength selected for port A bit n.
Port A Interrupt Flag — PTAIF indicates when a port A interrupt is detected. Writes have no effect on PTAIF.
0 No port A interrupt detected.
1 Port A interrupt detected.
Port A Interrupt Acknowledge — Writing a 1 to PTAACK is part of the flag clearing mechanism. PTAACK
always reads as 0.
Port A Interrupt Enable — PTAIE determines whether a port A interrupt is requested.
0 Port A interrupt request not enabled.
1 Port A interrupt request enabled.
Port A Detection Mode — PTAMOD (along with the PTAES bits) controls the detection mode of the port A
interrupt pins.
0 Port A pins detect edges only.
1 Port A pins detect both edges and levels.
Port A Drive Strength Selection Register (PTADS)
0
Port A Interrupt Status and Control Register (PTASC)
0
0
7
7
= Unimplemented or Reserved
Figure 6-8. Port A Interrupt Status and Control Register (PTASC)
Figure 6-7. Drive Strength Selection for Port A Register (PTADS)
PTADS6
0
0
0
6
6
Table 6-5. PTADS Register Field Descriptions
Table 6-6. PTASC Register Field Descriptions
PTADS5
MC9S08DZ60 Series Data Sheet, Rev. 4
0
0
0
5
5
PTADS4
0
0
0
4
4
Description
Description
PTADS3
PTAIF
3
0
3
0
PTAACK
PTADS2
0
0
0
2
2
PTADS1
Freescale Semiconductor
PTAIE
0
0
1
1
PTAMOD
PTADS0
0
0
0
0