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參數(shù)資料
| 型號： | 7640 |
| 英文描述： | IrDA. protocol handler plus endec for DCE Apps, -40C to +85C, 18-PDIP, TUBE |
| 中文描述： | 7640組數(shù)據(jù)表數(shù)據(jù)表1885K/SEP.05.00 |
| 文件頁數(shù)： | 78/97頁 |
| 文件大小： | 1885K |
| 代理商： | 7640 |
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77
Ver 1.4
MITSUBISHI MICROCOMPUTERS
7640 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
1.25 LOW POWER MODES
This device has two low-power dissipation modes:
Stop
Wait
1.25.1 Stop Mode
Use of the stop mode allows the MCU to be placed in
a state where no internal excitation of the circuitry is
taking place, thus resulting in extremely low power
dissipation. The MCU enters the stop mode when the
STP instruction is executed. The internal state of the
mcu after execution of the STP instruction is as fol-
lows:
Timer 1 and Timer 2 are loaded with FF
16
and 01
16
respectively.
All T123M mode register bits are reset to their default
value except bit 4.
The count source for Timer 1 is set to /8 and the
count source for Timer 2 is set to Timer 1 underflow.
Oscillation is restarted when a reset or an external in-
terrupt is received. The interrupt control bit of the
interrupt used to release the stop mode must be set
to a "1" and the I flag set to a "0" prior to the execution
of the STP instruction. To allow the oscillation source
time to stabilize, the oscillation source is connected
as the clock source for the wake-up timer (Timer 1
and Timer 2 cascaded). When Timer 2 underflows,
the MCU services the interrupt that caused the return
from the stop state. Afterwards, it services any other
enabled interrupts that occurred, in the order of their
respective priorities, and returns to its state prior to
the execution of the STP instruction. The timing for
the STP instruction is shown in Figure 1.97.
Fig. 1.97. STP Cycle Timing Diagram (STP)
Φ
out
SYNC
out
RD
WR
Address
Data
Opcode
Invalid
S,CPMA2
PC + 1
PC
X
in
INTREQ
STPSIG
CPUOSC
(PC + 1)H
Sleep Period
Timer Countdown
(Oscillator stabilization)
Timer 2 underflow
Start of Interrupt Service
Routine
ote:
Return from a STP Instruction is caused by an interrupt, followed by the countdown and underflow of Time 2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 7641 | 7641 Group Datasheet Datasheet 2145K/MAR.26.02 |
| 7643 | IrDA. protocol handler plus endec for DCE Apps, -40C to +85C, 18-SOIC 300mil, TUBE |
| 765-11-(SERIES) | Analog IC |
| 765-11-20K | Analog IC |
| 765-11-25A | Analog IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 76400 | 制造商:AMP 功能描述:76400 AMPHENOL NXF4C 制造商:TE Connectivity 功能描述: |
| 76-400 | 制造商:AMP 功能描述:76400 AMPHENOL NXF4C |
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| 764-00/003 | 功能描述:交流電源輸入模塊 SWITCHING AC RECPT RoHS:否 制造商:Schurter 過濾:Yes 過濾器類型:IEC Inlet Filters 產(chǎn)品:Inlets 電流額定值:4 A 電壓額定值:250 VAC 外殼材料:Thermoplastic 安裝風(fēng)格:Panel, Screw 端接類型:Quick Connect 工作溫度范圍:- 25 C to + 85 C 連接器類型:C-14 |
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