- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376440 > X40420V14IZ-B (INTERSIL CORP) Dual Voltage Monitor with Intergrated CPU Supervisor PDF資料下載
參數(shù)資料
| 型號： | X40420V14IZ-B |
| 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, ROHS COMPLIANT, PLASTIC, MO-153AC, TSSOP-14 |
| 文件頁數(shù)： | 6/25頁 |
| 文件大?。?/td> | 395K |
| 代理商： | X40420V14IZ-B |
6
May 25, 2006
Figure 3. V
TRIPX
Set/Reset Conditions
Figure 4. Watchdog Restart
V1 AND V2 THRESHOLD PROGRAM PROCEDURE
(OPTIONAL)
The X40420, X40421 is shipped with standard V1 and
V2 threshold (V
TRIP1,
V
TRIP2
) voltages. These values will
not change over normal operating and storage condi-
tions. However, in applications where the standard
thresholds are not exactly right, or if higher precision is
needed in the threshold value, the X40420 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 in the following section.
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
X40420, X40421
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X40420S14IZ-A | Dual Voltage Monitor with Intergrated CPU Supervisor |
| X40420S14IZ-B | Dual Voltage Monitor with Intergrated CPU Supervisor |
| X40420S14Z-A | Dual Voltage Monitor with Intergrated CPU Supervisor |
| X40420S14Z-B | Dual Voltage Monitor with Intergrated CPU Supervisor |
| X40420V14IZ-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 |
|---|---|
| X40420V14Z-A | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch |
| X40420V14Z-B | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch |
| X40421 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch |
| X40421EVAL | 制造商:Intersil Corporation 功能描述:X40421 EVALUATION KIT - Bulk |
| X40421S14-A | 功能描述:IC VOLT MON DUAL SUP/SW 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標準包裝:100 系列:- 類型:簡單復位/加電復位 監(jiān)視電壓數(shù)目:1 輸出:- 復位:低有效 復位超時: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） 供應商設(shè)備封裝:8-TSSOP 包裝:管件 |
發(fā)布緊急采購，3分鐘左右您將得到回復。