HD4074344 Datasheet, PDF (85/100 Pages) Hitachi Semiconductor – 4-bit microcomputers

HD404344R Series/HD404394 Series
BR Branching Instruction at Page Boundary: When the BR instruction is at a page boundary (256n +
255), the address in the program counter is transferred over to point to the next page as done by the internal
hardware. Therefore, executing the BR instruction at a page boundary will cause the program to branch to
the next page. (See figure 65.)
BR AAA
AAA NOP
256 (n – 1) + 255
256n
BR AAA
BR BBB
BBB NOP
256n + 254
256n + 255
256 (n + 1)
Figure 65 BR Instruction at Page Boundary
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