668-0010 Rabbit Semiconductor, 668-0010 Datasheet - Page 226
668-0010
Manufacturer Part Number
668-0010
Description
IC MPU RABIT3000 55.5MHZ 128LQFP
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-668-0011.pdf
(312 pages)
Specifications of 668-0010
Rohs Status
RoHS non-compliant
Processor Type
Rabbit 3000 8-Bit
Speed
55.5MHz
Voltage
2.5V, 2.7V, 3V, 3.3V
Mounting Type
Surface Mount
Package / Case
128-LQFP
Features
-
Other names
316-1016
- Current page: 226 of 312
- Download datasheet (2Mb)
26.2.4 Interrupts
The System Mode Violation interrupt occurs whenever the IDET instruction is executed
while the System/User mode is enabled and the processor is in the User Mode. Its purpose
is to trap when system code is being executed while the processor is in the User Mode.
The System Mode Violation interrupt vector is in the IIR at offset 0x180. It always occurs
at Priority 3.
Note that Priority 3 is not available while the System/User Mode is enabled and the pro-
cessor is in the User Mode. If the processor is placed into Priority 3 either by an instruc-
tion or an interrupt, it will respond as if it was set to Priority 2.
When the System/User Mode is enabled, it is critical to handle the SU stack in interrupts
as well as the IP stack; always perform a SURES before the IPRES at the end of the
interrupt.
216
Rabbit 3000 Microprocessor User’s Manual
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