Clock Generator Operation - Renesas RL78/G1P Hardware User Manual

RL78/G1P

5.5 Clock Generator Operation

The clock generator generates the following clocks and controls the operation modes of the CPU, such as standby
mode (see Figure 5-1).
 Main system clock f
 High-speed system clock f
X1 clock f
X
External main system clock f
 High-speed on-chip oscillator clock f
 Low-speed on-chip oscillator clock f
 CPU/peripheral hardware clock f
The CPU starts operation when the high-speed on-chip oscillator starts outputting after a reset release in the
RL78/G1P.
When the power supply voltage is turned on, the clock generator operation is shown in Figure 5-13.
R01UH0895EJ0100 Rev.1.00
Nov 29, 2019
MAIN
MX
EX
IH
IL
CLK
CHAPTER 5 CLOCK GENERATOR
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