MC68HC912BD32 Datasheet, PDF (96/292 Pages) Freescale Semiconductor, Inc – Advance Information

Freescale Semiconductor, Inc.
Resets and Interrupts
Interrupt Control and Priority Registers
INTCR — Interrupt Control Register
$001E
Bit 7
6
5
4
3
2
1
Bit 0
IRQE IRQEN DLY
0
0
0
0
0
RESET:
0
1
1
0
0
0
0
0
IRQE — IRQ Select Edge Sensitive Only
0 = IRQ configured for low-level recognition.
1 = IRQ configured to respond only to falling edges (on pin
PE1/IRQ).
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.
IRQEN — External IRQ Enable
The IRQ pin has an internal pull-up.
0 = External IRQ pin disconnected from interrupt logic
1 = External IRQ pin connected to interrupt logic
IRQEN can be read and written anytime in all modes.
DLY — Enable Oscillator Start-up Delay on Exit from STOP
The delay time of about 4096 cycles is based on the E clock rate.
0 = No stabilization delay imposed on exit from STOP mode. A
stable external oscillator must be supplied.
1 = Stabilization delay is imposed before processing resumes after
STOP.
DLY can be read anytime and written once in normal modes. In
special modes, DLY can be read and written anytime.
MC68HC912BD32 Rev 1.0
Resets and Interrupts
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4-resets