參數(shù)資料
型號(hào)： M37905M8C-XXXFP
廠商： Mitsubishi Electric Corporation
英文描述： 16 BIT CMOS MICROCOMPUTER
中文描述： 16位CMOS微機(jī)
文件頁數(shù)： 84/102頁
文件大?。?/td> 881K
代理商： M37905M8C-XXXFP
84
M37905M4C-XXXFP, M37905M4C-XXXSP
M37905M6C-XXXFP, M37905M6C-XXXSP
M37905M8C-XXXFP, M37905M8C-XXXSP
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
16-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
STANDBY FUNCTION
The standby function provides the stop (hereafter called STP) and
the wait (hereafter called WIT) mode. These modes are used to save
the power dissipation of the system, by making oscillation or system
clock inactive in the case that the CPU needs not be active.
The microcomputer enters the STP or WIT mode by executing the
STP or WIT instruction, and either mode is terminated by acceptance
of an interrupt request or reset.
To terminate the STP or WIT mode by an interrupt request, the inter-
rupt to be used for termination of the STP or WIT mode must be en-
abled in advance to execution of the STP or WIT instruction. The
interrupt priority level of this interrupt needs to be higher than the
processor interrupt priority level (IPL) of the routine where the STP
or WIT instruction will be executed.
Figures 95 shows the bit configuration of the particular function se-
lect register 0, Figure 96 shows the bit configuration of the particular
function select register 1, and Figure 97 shows the bit configuration
of the watchdog timer frequency select register. Setting the STP in-
struction invalidity select bit (bit 0 of the particular function select reg-
ister 0) to
“
1
”
invalidates the STP instruction, and the STP instruction
will be ignored. Since the above bit is cleared to
“
0
”
after reset is re-
moved, however, the STP instruction is valid.
The STP- or the WIT-instruction-execution status bit (bit 0 or 1 of the
particular function select register 1) is set to
“
1
”
by the execution of
the STP or the WIT instruction, and so, after the STP or WIT mode
has been terminated, each bit will indicate that the STP or WIT in-
struction has been executed. Accordingly, each of these bits must be
cleared to
“
0
”
by software at termination of the STP or the WIT mode.
Table 11 explains the microcomputer
’
s operation in the STP and WIT
modes.
STP mode
The execution of the STP instruction makes the oscillation circuit and
PLL circuit inactive. It also makes the following inactive: input clock
fX
IN
, system clock f
sys
,
φ
BIU
,
φ
CPU
, and peripheral devices
’
clocks f
1
to f
4096
, Wf
32
and Wf
512
with the
“
L
”
state, and divide clocks fX
16
to
fX
128
with the
“
H
”
state. In the watchdog timer,
“
FFF
16
”
is automati-
cally set. As shown in Figure 93, any one of divide clocks fX
16
to
fX
128
, which is selected by the watchdog timer clock source select
bits at STP termination (bits 6 and 7 of the watchdog timer frequency
select register), becomes the watchdog timer
’
s clock source.
In the STP mode, the A-D converter and watchdog timer, which uses
peripheral devices
’
clocks f
1
to f
4096
, Wf
32
and Wf
512
, are inactive. At
this time, timers A and B can be active only in the event counter
mode, and serial I/O communication is active while an external clock
is selected.
The STP mode is terminated by acceptance of an interrupt request
or reset, and the oscillation circuit and PLL circuit restart their opera-
tions. Input clock fX
IN
, system clock f
sys
, and peripheral devices
’
clocks f
1
to f
4096
, Wf
32
and Wf
512
are also supplied.
When the STP mode is terminated by reset, supply of
φ
BIU
and
φ
CPU
starts immediately after the oscillation circuit and PLL circuit restart
their operations. Therefore, the reset input must be raised
“
H
”
after
the operation-stabilizing time for these circuits has passed.
The following two modes are available in order to terminate the STP
mode by an interrupt:
(1) The watchdog timer is used in order to measure the period from
the operation restart of the oscillation circuit and PLL circuit until
the supply start of
φ
BIU
and
φ
CPU.
(2) The supply of
φ
BIU
and
φ
CPU
is started immediately after the op-
eration restart of the oscillation circuit and PLL circuit.
Mode
WIT
System clock
stop select bit
at WIT
Active
(Note 1)
Oscillation
circuit
Operations of function while WIT, STP modes
f
sys
,
φ
1
,
f
1
to f
4096
“
0
”
Active
STP
Wf
32
, Wf
512
φ
BIU
,
φ
CPU
Inactive
(
“
L
”
)
Inactive
(
“
L
”
)
Peripheral devices using f
1
to f
4096
, Wf
32
, Wf
512
Timers A, B, Serial I/O, A-D converter: Operation is enabled.
(Watchdog timer:
Inactive
)
Timers A, B: Operation is enabled only in the event
counter mode.
Serial I/O: Operation is enabled only while an external
clock is selected.
A-D converter:
Inactive
.
(Watchdog timer:
Inactive
)
Inactive
(
“
L
”
)
Inactive
(
“
L
”
)
Inactive
(
“
L
”
)
Active
(Note 1)
“
1
”
Inactive
(
“
L
”
)
Inactive
(
“
L
”
)
Inactive
(
“
L
”
)
Inactive
Timers A, B: Operation is enabled only in the event
counter mode.
Serial I/O: Operation is enabled only while an external
clock is selected.
A-D converter:
Inactive
.
(Watchdog timer:
Inactive
)
PLL circuit
Active
(Note 2)
Active
(Note 2)
Inactive
Notes 1:
When the external clock input select bit =
“
1
”
, the oscillation circuit is inactive. Also, clock input from pin X
IN
is allowed.
2:
When the PLL circuit operation enable bit =
“
0
”
, the PLL circuit is inactive.
—
Table 11. Microcomputer
’
s operation in STP and WIT modes
相關(guān)PDF資料
PDF描述
M37905M8C-XXXSP DIODE SCHOTTKY DUAL COMMON-CATHODE 25V 200mW 0.32V-vf 200mA-IFM 1mA-IF 2uA-IR SOT-23 3K/REEL
M37906F8CFP 16-BIT CMOS MICROCOMPUTER
M37906F8CSP 16-BIT CMOS MICROCOMPUTER
M37920S4CGP 16 BIT CMOS MICROCOMPUTER
M38007M5-XXXHP SMD Series PhotoTransistor, Surface Mount Plastic Package, Bulk Packaged
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37905M8C-XXXSP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:16 BIT CMOS MICROCOMPUTER
M37905T-PRB 功能描述:DEV POD PROBE FOR M37900T2-RPD-E RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 配件 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program RoHS指令信息:IButton RoHS Compliance Plan 標(biāo)準(zhǔn)包裝:1 系列:- 附件類型:USB 至 1-Wire? RJ11 適配器 適用于相關(guān)產(chǎn)品:1-Wire? 設(shè)備 產(chǎn)品目錄頁面:1429 (CN2011-ZH PDF)
M37906F8CFP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:16-BIT CMOS MICROCOMPUTER
M37906F8CFP-T4 制造商:Renesas Electronics Corporation 功能描述:FLSH 16-BIT
M37906F8CSP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:16-BIT CMOS MICROCOMPUTER
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。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。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

我的聯(lián)系方式

*
*
*