GMS81C50 Datasheet, PDF (44/99 Pages) Hynix Semiconductor – 8-BIT SINGLE CHIP MICROCONTROLLERS

HYUNDAI
GMS81C50 Series
10.1 Operation Mode
The system clock controller starts or stops the main-fre-
quency clock oscillator. Figure 10-2 shows the operating
mode transition diagram.
Main-clock operating mode
This mode is fast-frequency operating mode.
The CPU and the peripheral hardwares are operated on the
high-frequency clock. At reset release, this mode is in-
voked.
STOP mode
In this mode, the system operations are all stopped, holding
the internal states valid immediately before the stop at the
low power consumption level
Main - Oscillating
Main
Operating
Mode
NOTE:
Refer to 14.3 context
Instruction
Release
Refer _{to Note} ^{Register setting}
STOP
Mode
Main: Stopped
Reset
RESET
Operation
Reset
Figure 10-4 Operating Mode
SLEEP
Mode
Main: Oscillating
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