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MCU software stack application

Posted: 27 Apr 2009 ?? ?Print Version ?Bookmark and Share

Keywords:MCU? controller? HT48R70A-1 8bit?

Holtek 8bit controllers, like any MCUs, have limited stack resources. For example, the HT48R10A-1 has only two stacks, while the HT48R70A-1 has 16 stacks in total. The following notes will show how the number of effective stacks can be increased using software stacks. A software stack is a method where a common data register is used to save return addresses. Here it is applied to the HT48R10A-1, HT48R30A-1, HT48R50A-1 and HT48R70A-1 devices, however the same method can be applied to any other microcontroller.

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