MC80F0204 Datasheet, PDF (95/126 Pages) List of Unclassifed Manufacturers – 8-BIT SINGLE-CHIP MICROCONTROLLERS

Preliminary
MC80F0104/0204
By reset, exit from Stop mode is shown in Figure 19-6 .
STOP
INSTRUCTION
STOP Mode
Interrupt Request
Corresponding Interrupt
Enable Bit (IENH, IENL)
IENH or IENL ?
=0
=1
STOP Mode Release
Master Interrupt
Enable Bit PSW[2]
I-FLAG
=0
=1
Interrupt Service Routine
Next
INSTRUCTION
Figure 19-4 STOP Releasing Flow by Interrupts
.
Oscillator
(X_IN pin)
Internal Clock
External Interrupt
BIT Counter n n+1 n+2
Normal Operation
STOP Instruction
Executed
n+3
Stop Operation
01
Clear
FE FF
Stabilization Time
t_ST > 20ms
by software
012
Normal Operation
Before executing Stop instruction, Basic Interval Timer must be set
properly by software to get stabilization time which is longer than 20ms.
Figure 19-5 STOP Mode Release Timing by External Interrupt
Mar. 2005 Ver 0.2
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