MC9S08SG32E1JTGR FREESCALE [Freescale Semiconductor, Inc], MC9S08SG32E1JTGR Datasheet - Page 83

• Manufacturer Part Number: MC9S08SG32E1JTGR
• Description: HCS08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

6.6.1.5
6.6.1.6
Freescale Semiconductor
PTADS[7:5,
Reserved
Reset:
Reset:
PTAMOD
PTAACK
7:5,3:0
PTAIE
PTAIF
Field
Field
3:0]
5:4
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.
Reserved Bits — These bits are unused on this MCU, writes have no affect and could read as 1s or 0s.
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 enabled.
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
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 6-6. PTADS Register Field Descriptions
Table 6-7. PTASC Register Field Descriptions
R
0
0
0
5
5
MC9S08SG32 Data Sheet, Rev. 7
R
0
0
0
4
4
Description
Description
PTADS3
PTAIF
3
0
3
0
PTAACK
PTADS2
Chapter 6 Parallel Input/Output Control
0
0
0
2
2
PTADS1
PTAIE
0
0
1
1
PTAMOD
PTADS0
0
0
0
0
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