參數(shù)資料
型號(hào)： M34501M4
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
中文描述： 單芯片4位微機(jī)的CMOS
文件頁(yè)數(shù)： 23/113頁(yè)
文件大?。?/td> 1252K
代理商： M34501M4
23
4501 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
(3) Notes on interrupts
Note [1] on bit 3 of register I1
When the input of the INT pin is controlled with the bit 3 of regis-
ter I1 in software, be careful about the following notes.
Depending on the input state of the P1
3
/INT pin, the external 0 in-
terrupt request flag (EXF0) may be set when the bit 3 of register
I1 is changed. In order to avoid the occurrence of an unexpected
interrupt, clear the bit 0 of register V1 to
“
0
”
(refer to Figure 18
)
and then, change the bit 3 of register I1.
In addition, execute the SNZ0 instruction to clear the EXF0 flag
after executing at least one instruction (refer to Figure 18
).
Also, set the NOP instruction for the case when a skip is per-
formed with the SNZ0 instruction (refer to Figure 18
).
LA
TV1A
LA
TI1A
NOP
SNZ0
4
; (
0
2
)
; The SNZ0 instruction is valid...........
; (1
2
)
; Control of INT pin input is changed
...........................................................
; The SNZ0 instruction is executed
(EXF0 flag cleared)
...........................................................
8
NOP
: these bits are not used here.
Fig. 18 External 0 interrupt program example-1
Note [2] on bit 3 of register I1
When the bit 3 of register I1 is cleared, the RAM back-up mode is
selected and the input of INT pin is disabled, be careful about the
following notes.
When the key-on wakeup function of port P1
3
is not used (regis-
ter K1
3
=
“
0
”
), clear bits 2 and 3 of register I1 before system
enters to the RAM back-up mode. (refer to Figure 19
).
LA
TI1A
DI
EPOF
POF
0
; (00
2
)
; Input of INT disabled........................
; RAM back-up
: these bits are not used here.
Fig. 19 External 0 interrupt program example-2
Note [3] on bit 2 of register I1
When the interrupt valid waveform of the P1
3
/INT pin is changed
with the bit 2 of register I1 in software, be careful about the fol-
lowing notes.
Depending on the input state of the P1
3
/INT pin, the external 0 in-
terrupt request flag (EXF0) may be set when the bit 2 of register
I1 is changed. In order to avoid the occurrence of an unexpected
interrupt, clear the bit 0 of register V1 to
“
0
”
(refer to Figure 20
)
and then, change the bit 2 of register I1 is changed.
In addition, execute the SNZ0 instruction to clear the EXF0 flag
after executing at least one instruction (refer to Figure 20
).
Also, set the NOP instruction for the case when a skip is per-
formed with the SNZ0 instruction (refer to Figure 20
).
LA
TV1A
LA
TI1A
NOP
SNZ0
4
; (
0
2
)
; The SNZ0 instruction is valid...........
12
; Interrupt valid waveform is changed
...........................................................
; The SNZ0 instruction is executed
(EXF0 flag cleared)
...........................................................
NOP
: these bits are not used here.
Fig. 20 External 0 interrupt program example-3
相關(guān)PDF資料
PDF描述
M34512M2 SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M34512M4 SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M34514M8-756FP SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M34513M2 Hook-Up Wire; Conductor Size AWG:26; No. Strands x Strand Size:7 x 34; Jacket Color:White; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1061; CSA AWM; Conductor Material:Copper; Jacket Material:Polyvinylchloride (PVC) RoHS Compliant: Yes
M34513M2-420FP Hook-Up Wire; Conductor Size AWG:26; No. Strands x Strand Size:7 x 34; Jacket Color:Black; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1061; CSA AWM; Conductor Material:Copper; Jacket Material:Polyvinylchloride (PVC) RoHS Compliant: Yes
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M34501M4-XXXFP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M34502E4 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M34502E4FP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-BIT CISC SINGLE-CHIP MICROCOMPUTER 4500 SERIES
M34502M2 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M34502M2-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*