HD404358 Datasheet, PDF (44/102 Pages) Renesas Technology Corp – microcomputer has an A/D converter,

HD404358 Series
Prescalers
The MCU has a built-in prescaler labeled as prescaler S (PSS).
The prescalers operating conditions are listed in table 24, and the prescalers output supply is shown in
figure 28. The timers A–C input clocks except external events, the serial transmit clock except the external
clock are selected from the prescaler outputs, depending on corresponding mode registers.
Prescaler Operation
Prescaler S: 11-bit counter that inputs the system clock signal. After being reset to $000 by MCU reset,
prescaler S divides the system clock.
Table 24 Prescaler Operating Conditions
Prescaler
Prescaler S
Input Clock
System clock
Reset Conditions
MCU reset
Stop Conditions
MCU reset, stop mode
System
clock
Clock
selector
Prescaler S
Figure 28 Prescaler Output Supply
Timer A
Timer B
Timer C
Serial
Alarm output
circuit
42