PDF for CDP1877E
CDP1877E is INTERSIL [Intersil Corporation] company product |
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 CDP1877E PDF Download |
File Size : | 45.82 KB |
| Manufacturer: | INTERSIL [Intersil Corporation] | |
| Description: |
...lers designed for use in CDP1800 series microprocessor systems. Theyprovide added versatility by extending the number of permissible interruptsfrom 1 to N in increments of 8.When a high to low transition occurs on any of the PIC interrupt lines (IR0 to... ...INTERRUPT line on the PIC and consequently the INTERRUPT input onthe CPU to go low.The CPU accesses the PIC by having interrupt vector register R(1) loadedwith the memory address of the PIC. After the interrupt S3 cycle, this regis-... ...instruction from the PIC. This fetch cycle clears the interrupt request latchbit to accept a new high-to-low transition, and also causes the PIC to issue along branch instruction (CO) followed by the preprogrammed vector addresswritten into the PIC’s address registers, causing the CPU to branch to the... |
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| Similar items with "CDP1877E" : CDP1020, CDP1802A, CDP1802AC, CDP1802AC/3, More... | ||
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