RL78/G13 CHAPTER 3 CPU ARCHITECTURE
R01UH0146EJ0100 Rev.1.00 135
Sep 22, 2011
3.2.3 ES and CS registers
The ES register is used for data access and the CS register is used to specify the higher address when a branch
instruction is executed.
The default value of the ES register after reset is 0FH, and that of the CS register is 00H.
Figure 3-27. Configuration of ES and CS Registers
0 0 0 0 ES3 ES2 ES1 ES0
70
ES
6
5
4
3
21
0 0 0 0 CS3 CP2 CP1 CP0
70
CS
6
5
4
3
21