UPD705100 Ver la hoja de datos (PDF) - NEC => Renesas Technology

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UPD705100

V830™ 32-BIT MICROCONTROLLER

NEC => Renesas Technology 

µPD705100

8.1.2 Program counter (PC)

The program counter (PC) is a register which holds the first address of the instruction being executed. Bit 0 of

the program counter is fixed to 0, but is forcibly masked to 0 upon a branch to a point other than a halfword boundary

(bit 0 of the address is 0).

Upon reset, the program counter is initialized to FFFFFFF0H.

Figure 8-1. Program Registers

r0 : Zero register

r1 : Assembler-reserved register

r2 : Handler stack pointer

r3 : Stack pointer

r4 : Global pointer

r5 : Text pointer

r6

r29

r30: Register reserved for operation

r31: Link pointer

PC

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