GMS81C2112/GMS81C2120
~
~
Oscillator
(XI pin)
Internal
RC Clock
~
~
~
~
~
~
Internal
Clock
External
Interrupt
( or WDT Interrupt )
~
~
STOP Instruction Execution
~
~
Clear Basic Interval Timer
~
~
~
~
BIT
Counter
N-2
N-1
N
N+1
N+2
00
01
FE
FF
00
00
~
~
Normal Operation
RCWDT Mode
Stabilization Time
t
ST
> 20mS
Normal Operation
Figure 17-5 Internal RCWDT Mode Releasing by External Interrupt or WDT Interrupt
RCWDT Mode
~
~
Oscillator
(XI pin)
Internal
RC Clock
~
~
~
~
~
~
Internal
Clock
RESET
RESET by WDT
Internal
RESET
~
~
STOP Instruction Execution
Time can not be control by software
Figure 17-6 Internal RCWDT Mode Releasing by RESET
~
~
~
~
Stabilization Time
t
ST
= 64mS @4MHz
~
~
~
~
17.5 Minimizing Current Consumption
The Stop mode is designed to reduce power consumption.
To minimize current drawn during Stop mode, the user
should turn-off output drivers that are sourcing or sinking
current, if it is practical.
Note:
In the STOP operation, the power dissipation asso-
ciated with the oscillator and the internal hardware is low-
ered; however, the power dissipation associated with the
pin interface (depending on the external circuitry and pro-
gram) is not directly determined by the hardware operation
of the STOP feature. This point should be little current flows
when the input level is stable at the power voltage level
(V
DD
/V
SS
); however, when the input level becomes higher
JUNE. 2001 Ver 1.00
77
HYNIX [ HYNIX SEMICONDUCTOR ]
