HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 78

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

2.3.3
The program counter (PC) stores the value obtained by adding 4 to the current instruction address.
Figure 2.8 shows the PC configuration. There is no instruction to read PC directly. Before an
exception handling state is entered, the PC is saved in the save program counter (SPC). Before a
subroutine call is executed, PC is saved in the procedure register (PR). In addition, PC can be
used for PC relative addressing mode.
Rev. 1.00, 02/04, page 40 of 804
Program Counter
Figure 2.8 System Registers and Program Counter
Procedure register (PR)
Program counter (PC)
Multiply and accumulate registers (MAC)
31
31
31
MACH
MACL
PR
PC
0
0
0