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Clock Generator
Chapter 4
Preliminary User’s Manual U17566EE1V2UM00
(1)
HALT mode
The HALT mode can be entered from normal run mode. In HALT mode, all
clock settings remain unchanged. Only the CPU clock is suspended and hence
program execution.
The HALT mode can be released by any unmasked maskable interrupt, NMI or
system reset.
On HALT mode release, all clock settings remain unchanged. The CPU clock
resumes operation.
Table 4-24
Clock Generator status in HALT mode
Item
Status
Remarks
Main oscillator
unchanged
Sub oscillator
operates
Ring oscillator
operates
SSCG
unchanged
PLL
unchanged
VBCLK (CPU system)
suspended
Clock setup is unchanged
IICLK
unchanged
PCLK0, PCLK1
unchanged
PCLK2…PCLK15
unchanged
SPCLK0, SPCLK1
unchanged
SPCLK2…SPCLK15
unchanged
FOUTCLK
unchanged
WTCLK / LCDCLK
unchanged
WDTCLK
unchanged
WCTCLK
unchanged
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