mc68hc912dg128 Freescale Semiconductor, Inc, mc68hc912dg128 Datasheet - Page 137

• Manufacturer Part Number: mc68hc912dg128
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

INTCR — Interrupt Control Register
9.5 Interrupt Control and Priority Registers
MC68HC912DG128 — Rev 3.0
MOTOROLA
RESET:
IRQE
Bit 7
0
IRQEN
6
1
IRQE — IRQ Select Edge Sensitive Only
IRQEN — External IRQ Enable
DLY — Enable Oscillator Start-up Delay on Exit from STOP
IRQE can be read anytime and written once in normal modes. In
special modes, IRQE can be read anytime and written anytime,
except the first write is ignored.
The IRQ pin has an active pull-up. See
IRQEN can be read and written anytime in all modes.
The delay time of about 4096 cycles is based on the X clock rate
chosen.
DLY can be read anytime and written once in normal modes. In
special modes, DLY can be read and written anytime.
Freescale Semiconductor, Inc.
For More Information On This Product,
0 = IRQ configured for low-level recognition.
1 = IRQ configured to respond only to falling edges (on pin
0 = External IRQ pin is disconnected from interrupt logic.
1 = External IRQ pin is connected to interrupt logic.
0 = No stabilization delay imposed on exit from STOP mode. A
1 = Stabilization delay is imposed before processing resumes after
DLY
5
1
PE1/IRQ).
stable external oscillator must be supplied.
STOP.
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Resets and Interrupts
4
0
0
3
0
0
2
0
0
Interrupt Control and Priority Registers
Table
1
0
0
3-4.
Resets and Interrupts
Bit 0
0
0
Technical Data
$001E
137