HD404318 Datasheet, PDF (30/66 Pages) Hitachi Semiconductor – 4-bit HMCS400-series microcomputer

HD404318 Series
Prescaler
The MCU has a built-in prescaler labeled as prescaler S (PSS), which divides the system clock and then
outputs divided clock signals to the peripheral function modules, as shown in figure21.
System
clock
Clock
selector
Prescaler S
Figure 21 Prescaler Output Supply
Timer A
Timer B
Timer C
Serial
30