CHAPTER 3 CPU ARCHITECTURE
3.2 Processor Registers
The µPD789188 and 78F9189 Subseries provide the following on-chip processor registers:
3.2.1 Control registers
The control registers have special functions to control the program sequence statuses and stack memory. The
control registers include a program counter, a program status word, and a stack pointer.
(1) Program counter (PC)
The program counter is a 16-bit register which holds the address information of the next program to be
executed.
User’s Manual 2nd edition
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