Chapter 1 Hardware Structure
·
Location 00CH
This internal interrupt vector is used by the Timer/Event Counter. If a counter overflow occurs,
the program will jump to this location and begin execution if the internal interrupt is enabled and
the stack is not full. For the HT49R50A-1/HT49C50-1/HT49C50L, HT49R70A-1/HT49C70-1/
HT49C70L and HT49RU80/HT49CU80, the Timer/Event Counter is known as Timer/Event
Counter 0.
·
Location 010H
With the exception of the HT49R30A-1/HT49C30-1/HT49C30L devices, which have only one
internal timer/event counter, this internal interrupt vector is used by Timer/Event Counter 1. If a
counter overflow occurs, the program will jump to this location and begin execution if the internal
interrupt is enabled and the stack is not full. For the HT49R30A-1/HT49C30-1/HT49C30L de-
vices, this vector is used by the Time Base interrupt. The program will jump to this location and
begin execution when a Time Base interrupt signal is generated if the interrupt is enabled and
the stack is not full.
·
Location 014H
With the exception of the HT49R30A-1/HT49C30-1/HT49C30L and HT49RU80/HT49CU80 de-
vices, this internal interrupt vector is used by the Time Base interrupt. When a Time Base inter-
rupt signal is generated, the program will jump to this location and begin execution if the
interrupt is enabled and the stack is not full. For the HT49R30A-1/HT49C30-1/HT49C30L de-
vices, this vector is used by the Real Time Clock interrupt. The program will jump to this location
and begin execution when a Real Time Clock interrupt signal is generated if the interrupt is en-
abled and the stack is not full. For the HT49RU80/HT49CU80 devices, this internal vector is re-
served for the UART Bus interrupt service routine. When a UART Bus interrupt resulting from a
transmission flag or reception is completed, the program will jump to this location and begin exe-
cution if the interrupt is enabled and the stack is not full.
·
Location 018H
With the exception of the HT49R30A-1/HT49C30-1/HT49C30L and HT49RU80/HT49CU80 de-
vices, this internal interrupt vector is used by the Real Time Clock interrupt. This internal inter-
rupt vector is not available for the HT49R30A-1/HT49C30-1/HT49C30L devices whose Real
Time Clock interrupt vector is located at 014H. The program will jump to this location and begin
execution when a Real Time Clock interrupt signal is generated if the interrupt is enabled and
the stack is not full. For the HT49RU80/HT49CU80 devices, this internal vector is reserved for
the Multi-function interrupt service routine. If a timer interrupt results from a Timer/Event Coun-
ter 2 overflow, a Real Time Clock time-out or a Time Base time-out, the program will jump to this
location and begin execution if the interrupt is enabled and the stack is not full.
27
Home Index Bookmark Pages Text
Previous Next
Pages: Home Index