HD6473887 Datasheet, PDF (120/523 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

Bits 1 and 0: Subactive mode clock select (SA1 and SA0)
These bits select the CPU clock rate (ø_W/2, ø_W/4, or ø_W/8) in subactive mode. SA1 and SA0
cannot be modified in subactive mode.
Bit 1
SA1
Bit 0
SA0
Description
0
0
1
Note:
0
ø_W/8
1
ø_W/4
*
ø_W/2
* Don’t care
(initial value)
103