HD404369 Datasheet, PDF (42/117 Pages) Hitachi Semiconductor – 4-bit HMCS400-Series microcomputer

HD404369 Series
SSR2 is initialized to $0 on reset or in stop mode.
Notes on Usage
If the system clock select register 1 (SSR1: $027) setting does not match the oscillator frequency, the
subsystem using the 32.768-kHz oscillation will malfunction.
System clock selection register 2 (SSR2: $028)
Bit
Initial value
Read/Write
Bit name
3
2
1
—
—
0
—
—
W
Not used Not used SSR21
0
0
W
SSR20
SSR21
0
0
1
1
SSR20
0
1
0
1
System Clock Division Ratio
1/4 division
1/8 division
1/16 division
1/32 division
Figure 24 System Clock Selection Register 2 (SSR2)
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