mc9s12vr48 Freescale Semiconductor, Inc, mc9s12vr48 Datasheet - Page 60

• Manufacturer Part Number: mc9s12vr48
• Description: S12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

1
1
Port Integration Module (S12VRPIMV2)
2.3.9
60
Address 0x001F
Read: Anytime
Write:
IRQEN
Read: Anytime
Write: Only in special mode
IRQE
Field
Reset
7
6
IRQE: Once in normal mode, anytime in special mode
IRQEN: Anytime
W
R
Reserved
IRQ select Edge sensitive only —
1 IRQ pin configured to respond only to falling edges. Falling edges on the IRQ pin will be detected anytime IRQE=1
0 IRQ pin configured for low level recognition
IRQ ENable —
1 IRQ pin is connected to interrupt logic
0 IRQ pin is disconnected from interrupt logic
Reserved Register
and will be cleared only upon a reset or the servicing of the IRQ interrupt.
7
x
These reserved registers are designed for factory test purposes only and are
not intended for general user access. Writing to these registers when in
special modes can alter the module’s functionality.
Reserved
x
6
Table 2-9. IRQCR Register Field Descriptions
MC9S12VR Family Reference Manual,
Preliminary - Subject to Change Without Notice
Reserved
Figure 2-7. Reserved Register
5
x
Reserved
NOTE
4
x
Description
Reserved
x
3
Rev. 2.2
Reserved
2
x
Reserved
Freescale Semiconductor
Access: User read/write
x
1
Reserved
x
0
1