- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄376439 > X40021V14I-C (INTERSIL CORP) Dual Voltage Monitor with Intergrated CPU Supervisor PDF資料下載
參數(shù)資料
| 型號(hào)： | X40021V14I-C |
| 廠商： | INTERSIL CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Dual Voltage Monitor with Intergrated CPU Supervisor |
| 中文描述： | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14 |
| 封裝： | 4.40 MM, PLASTIC, MO-153AC, TSSOP-14 |
| 文件頁(yè)數(shù)： | 5/24頁(yè) |
| 文件大?。?/td> | 346K |
| 代理商： | X40021V14I-C |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)當(dāng)前第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)
5
FN8112.0
March 28, 2005
Figure 3. V
TRIPX
Set/Reset Conditions
Figure 4. Watchdog Restart
V1 AND V2 THRESHOLD PROGRAM PROCEDURE
(OPTIONAL)
The X40020/21 is shipped with standard V1 and V2
threshold (V
TRIP1,
V
TRIP2
) voltages. These values will not
change over normal operating and storage conditions.
However, in applications where the standard thresholds
are not exactly right, or if higher precision is needed in
the threshold value, the X40020 trip points may be
adjusted. The procedure is described below, and uses
the application of a high voltage control signal.
Setting a V
TRIPx
Voltage (x = 1, 2)
There are two procedures used to set the threshold volt-
ages (V
TRIPx
), depending if the threshold voltage to be
stored is higher or lower than the present value. For
example, if the present V
TRIPx
is 2.9 V and the new
V
TRIPx
is 3.2 V, the new voltage can be stored directly
into the V
TRIPx
cell. If however, the new setting is to be
lower than the present setting, then it is necessary to
“reset” the V
TRIPx
voltage before setting the new value.
Setting a Higher V
TRIPx
Voltage (x = 1, 2)
To set a V
TRIPx
threshold to a new voltage which is
higher than the present threshold, the user must apply
the
desired
V
TRIPx
threshold
corresponding input pin (Vcc(V1MON) or V2MON).
Then, a program-ming voltage (Vp) must be applied to
the WDO pin before a START condition is set up on
SDA. Next, issue on the SDA pin the Slave Address A0h,
followed by the Byte Address 01h for V
TRIP1
, and 09h for
V
TRIP2
, and a 00h Data Byte in order to program V
TRIPx
.
voltage
to
the
The STOP bit following a valid write operation initiates
the programming sequence. Pin WDO must then be
brought LOW to complete the operation.
To check if the V
TRIPX
has been set, set VXMON to a
value slightly greater than V
TRIPX
(that was previously
set). Slowly ramp down VXMON and observe when the
corresponding outputs (LOWLINE and V2FAIL) switch.
The voltage at which this occurs is the V
TRIPX
(actual).
C
ASE
A
Now if the desired V
TRIPX
is greater than the V
TRIPX
(actual), then add the difference between V
TRIPX
(desired) - V
TRIPX
(actual) to the original V
TRIPX
desired.
This is your new V
TRIPX
that should be applied to
VXMON and the whole sequence should be repeated
again (see Figure 5).
C
ASE
B
Now if the V
TRIPX
(actual), is higher than the V
TRIPX
(desired), perform the reset sequence as described in
the next section. The new V
TRIPX
voltage to be applied
to VXMON will now be: V
TRIPX
(desired) - (V
TRIPX
(actual) - V
TRIPX
(desired)).
Note:
1. This operation does not corrupt the memory
array.
2. Set V
CC
= 5V, when V
TRIP2
is being pro-
grammed
Setting a Lower V
TRIPx
Voltage (x = 1, 2)
In order to set V
TRIPx
to a lower voltage than the
present value, then V
TRIPx
must first be “reset” accord-
ing to the procedure described below. Once V
TRIPx
has been “reset”, then V
TRIPx
can be set to the desired
voltage using the procedure described in “Setting a
Higher V
TRIPx
Voltage”.
V
CC
/V2MON
V
TRIPX
V
P
t
WC
A0h
0
7
7
0
7
0
SCL
WDO
SDA
(X = 1, 2)
00h
SCL
SDA
.6μs
1.3μs
WDT Reset
Start
Stop
X40020, 40021
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X40020 | Dual Voltage Monitor with Intergrated CPU Supervisor |
| X40020S14-A | Dual Voltage Monitor with Intergrated CPU Supervisor |
| X40020S14-B | Dual Voltage Monitor with Intergrated CPU Supervisor |
| X40020S14-C | Dual Voltage Monitor with Intergrated CPU Supervisor |
| X40020S14I-A | Dual Voltage Monitor with Intergrated CPU Supervisor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X40021V14I-CT1 | 功能描述:IC VOLTAGE MONITOR DUAL 14-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 類型:簡(jiǎn)單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:- 復(fù)位:低有效 復(fù)位超時(shí):最小為 100 ms 電壓 - 閥值:4.38V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件 |
| X400-22FA | 制造商:MOFLASH SIGNALLING 功能描述:BEACON XENON HIGH OUTPUT |
| X4003 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CPU Supervisor |
| X4003_06 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CPU Supervisor |
| X40030 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Triple Voltage Monitor with Intergrated CPU Supervisor |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。