GMS81C2112 Datasheet, PDF (83/107 Pages) Hynix Semiconductor – HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS81C2112/GMS81C2120
Oscillator
(XI pin)
Internal
RC Clock
Internal
Clock
External
Interrupt
( or WDT Interrupt )
STOP Instruction Execution
BIT
Counter
N-2 N-1 N N+1
N+2
Normal Operation
RCWDT Mode
Clear Basic Interval Timer
00 01
FE FF 00 00
Stabilization Time
t_ST > 20mS
Normal Operation
Figure 17-5 Internal RCWDT Mode Releasing by External Interrupt or WDT Interrupt
Oscillator
(XI pin)
Internal
RC Clock
Internal
Clock
RESET
RESET by WDT
Internal
RESET
RCWDT Mode
STOP Instruction Execution
Time can not be control by software
Stabilization Time
t_ST = 64mS @4MHz
Figure 17-6 Internal RCWDT Mode Releasing by RESET
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