- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45027 > M34554MC-XXXFP 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP64 PDF資料下載
參數(shù)資料
| 型號： | M34554MC-XXXFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | 14 X 14 MM, 0.80 MM PITCH, PLASTIC, QFP-64 |
| 文件頁數(shù)： | 63/138頁 |
| 文件大?。?/td> | 1082K |
| 代理商： | M34554MC-XXXFP |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁當前第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁
Rev.3.00
Aug 06, 2004
page 30 of 136
REJ03B0043-0300Z
4554 Group
(5) Notes on External 1 interrupts
Note [1] on bit 3 of register I2
When the input of the INT1 pin is controlled with the bit 3 of reg-
ister I2 in software, be careful about the following notes.
Depending on the input state of the D9/INT1 pin, the external 1 in-
terrupt request flag (EXF1) may be set when the bit 3 of register
I2 is changed. In order to avoid the occurrence of an unexpected
interrupt, clear the bit 1 of register V1 to “0” (refer to Figure 21)
and then, change the bit 3 of register I2.
In addition, execute the SNZ1 instruction to clear the EXF1 flag
to “0” after executing at least one instruction (refer to Figure
21).
Also, set the NOP instruction for the case when a skip is per-
formed with the SNZ1 instruction (refer to Figure 21).
LA
4
; (02)
TV1A
; The SNZ1 instruction is valid ...........
LA
8
; (12)
TI2A
; Control of INT1 pin input is changed
NOP
...........................................................
SNZ1
; The SNZ1 instruction is executed
(EXF1 flag cleared)
NOP
...........................................................
: these bits are not used here.
Fig. 21 External 1 interrupt program example-1
Note [2] on bit 3 of register I2
When the bit 3 of register I2 is cleared to “0”, the RAM back-up
mode is selected and the input of INT1 pin is disabled, be careful
about the following notes.
When the key-on wakeup function of INT1 pin is not used (regis-
ter K22 = “0”), clear bits 2 and 3 of register I2 before system
enters to the RAM back-up mode. (refer to Figure 22).
LA
0
; (002)
TI2A
; Input of INT1 disabled .....................
DI
EPOF
POF2
; RAM back-up
: these bits are not used here.
Fig. 22 External 1 interrupt program example-2
Note on bit 2 of register I2
When the interrupt valid waveform of the D9/INT1 pin is changed
with the bit 2 of register I2 in software, be careful about the fol-
lowing notes.
Depending on the input state of the D9/INT1 pin, the external 1 in-
terrupt request flag (EXF1) may be set when the bit 2 of register
I2 is changed. In order to avoid the occurrence of an unexpected
interrupt, clear the bit 1 of register V1 to “0” (refer to Figure 23)
and then, change the bit 2 of register I2.
In addition, execute the SNZ1 instruction to clear the EXF1 flag
to “0” after executing at least one instruction (refer to Figure
23).
Also, set the NOP instruction for the case when a skip is per-
formed with the SNZ1 instruction (refer to Figure 23).
LA
4
; (02)
TV1A
; The SNZ1 instruction is valid ...........
LA
12
; (12)
TI2A
; Interrupt valid waveform is changed
NOP
...........................................................
SNZ1
; The SNZ1 instruction is executed
(EXF1 flag cleared)
NOP
...........................................................
: these bits are not used here.
Fig. 23 External 1 interrupt program example-3
相關PDF資料 |
PDF描述 |
|---|---|
| M34554EDFP | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP64 |
| M3455AG8-XXXFP | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP52 |
| M3455AGCFP | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP52 |
| M3455AGC-XXXFP | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP52 |
| M3455AG8FP | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP52 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M34556G8FP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34556G8HFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34556M4H-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34556M4-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34556M8H-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，3分鐘左右您將得到回復。