MC9S08DN60_08 Datasheet, PDF (91/356 Pages) Freescale Semiconductor, Inc – Microcontrollers

6.5.2.7
Port B Interrupt Pin Select Register (PTBPS)
Chapter 6 Parallel Input/Output Control
R
W
Reset:
7
PTBPS7
0
6
PTBPS6
5
PTBPS5
4
PTBPS4
3
PTBPS3
2
PTBPS2
1
PTBPS1
0
0
0
0
0
0
Figure 6-17. Port B Interrupt Pin Select Register (PTBPS)
Table 6-15. PTBPS Register Field Descriptions
0
PTBPS0
0
Field
Description
7:0
Port B Interrupt Pin Selects — Each of the PTBPSn bits enable the corresponding port B interrupt pin.
PTBPS[7:0] 0 Pin not enabled as interrupt.
1 Pin enabled as interrupt.
6.5.2.8 Port B Interrupt Edge Select Register (PTBES)
R
W
Reset:
7
PTBES7
0
6
PTBES6
5
PTBES5
4
PTBES4
3
PTBES3
2
PTBES2
0
0
0
0
0
Figure 6-18. Port B Edge Select Register (PTBES)
Table 6-16. PTBES Register Field Descriptions
1
PTBES1
0
0
PTBES0
0
Field
Description
7:0
PTBES[7:0]
Port B Edge Selects — Each of the PTBESn bits serves a dual purpose by selecting the polarity of the active
interrupt edge as well as selecting a pull-up or pull-down device if enabled.
0 A pull-up device is connected to the associated pin and detects falling edge/low level for interrupt generation.
1 A pull-down device is connected to the associated pin and detects rising edge/high level for interrupt
generation.
MC9S08DN60 Series Data Sheet, Rev 3
Freescale Semiconductor
91