MC68HC05SR3 Datasheet, PDF (70/96 Pages) Freescale Semiconductor, Inc – High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcontroller Units

STOP
Stop External Oscillator,
Stop Internal Timer Clock,
and Reset Start-Up Delay
Stop Internal Processor Clock,
Clear I-Bit in CCR
WAIT
External Oscillator Active,
and Internal
Timer Clock Active
Stop Internal Processor Clock,
Clear I-Bit in CCR
External
Y
RESET?
N
Y
External
RESET?
N
N _{External Hardware}
Y
Interrupt?
Reset External Oscillator,
and Stabilization Delay
Y
External Hardware
Interrupt?
N
9
End of Start-Up
N
Delay?
Y
Timer
Interrupt?
Y
N
Restart
Internal Processor Clock
Y
Keyboard
N
Interrupt?
Fetch Reset Vector
or
Service Interrupt
(a) Stack
(b) Set I-Bit
(c) Vector to Interrupt
Routine
Figure 9-1 STOP and WAIT Mode Flowcharts
Freescale
9-2
LOW POWER MODES
TPG
MC68HC05SR3