參數資料
型號: MC80F0224
廠商: Electronic Theatre Controls, Inc.
元件分類: 8位微控制器
英文描述: 8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 8位單晶片微控制器
文件頁數: 102/128頁
文件大?。?/td> 1408K
代理商: MC80F0224
MC80F0208/16/24
Preliminary
98
MAR. 2005 Ver 0.2
eration. Therefore, before STOP instruction, user must be set its
relevant prescaler divide ratio to have long enough time (more
than 20msec). This guarantees that oscillator has started and sta-
bilized.
By reset, exit from Stop mode is shown in Figure 21-6.
Figure 21-4 STOP Releasing Flow by Interrupts
.
Figure 21-5 STOP Mode Release Timing by External Interrupt
IENH or IENL
=0
=1
STOP
INSTRUCTION
STOP Mode
Interrupt Request
STOP Mode Release
I-FLAG
=1
Interrupt Service Routine
Next
INSTRUCTION
=0
Master Interrupt
Enable Bit PSW[2]
Corresponding Interrupt
Enable Bit (IENH, IENL)
Before executing Stop instruction, Basic Interval Timer must be set
properly by software to get stabilization time which is longer than 20ms.
Oscillator
(X
IN
pin)
~
n
0
BIT Counter
n+1
n+2
n+3
~
Normal Operation
Stop Operation
Normal Operation
1
FE
FF
0
1
2
~
~
~
t
>
20ms
by software
~
~
External Interrupt
Internal Clock
Clear
STOP Instruction
Executed
~
~
~
Stabilization Time
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