- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371250 > X40015V8-A Dual Voltage Monitor with Integrated CPU Supervisor PDF資料下載
參數(shù)資料
| 型號(hào)： | X40015V8-A |
| 英文描述： | Dual Voltage Monitor with Integrated CPU Supervisor |
| 中文描述： | 雙電壓監(jiān)視器集成CPU監(jiān)控 |
| 文件頁數(shù)： | 4/25頁 |
| 文件大?。?/td> | 124K |
| 代理商： | X40015V8-A |
X40010/X40011/X40014/X40015 – Preliminary
Characteristics subject to change without notice.
4 of 25
REV 1.3.4 7/12/02
www.xicor.com
Figure 2. V
TRIPX
Set/Reset Conditions
WATCHDOG TIMER
The Watchdog Timer circuit monitors the microproces-
sor activity by monitoring the SDA and SCL pins. The
microprocessor must toggle the SDA pin HIGH to LOW
periodically, while SCL also toggles from HIGH to LOW
(this is a start bit) followed by a stop condition prior to
the expiration of the watchdog time out period to pre-
vent a WDO signal going active. The state of two non-
volatile control bits in the Status Register determines
the watchdog timer period. The microprocessor can
change these watchdog bits by writing to the X40010/
11/14/15 control register (also refer to page 19).
Figure 3. Watchdog Restart
V1 AND V2 THRESHOLD PROGRAM PROCEDURE
(OPTIONAL)
The X40010/11/14/15is shipped with standard V1 and
V2 threshold (V
TRIP1,
V
TRIP2
will not change over normal operating and storage con-
ditions. However, in applications where the standard
thresholds are not exactly right, or if higher precision is
needed in the threshold value, the X40010/11/14/15trip
) voltages. These values
points may be adjusted. The procedure is described
below, and uses the application of a high voltage control
signal.
Setting a V
There are two procedures used to set the threshold
voltages (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
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.
TRIPx
Voltage (x=1, 2)
is 2.9 V and the new
Setting a Higher V
To set a V
higher than the present threshold, the user must apply
the desired V
TRIPx
threshold voltage to the corre-
sponding input pin Vcc(V1MON), or V2MON. The
Vcc(V1MON) and V2MON must be tied together during
this sequence. Then, a programming 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
order to program V
TRIPx
. The STOP bit following a
valid write operation initiates the programming
sequence. Pin WDO must then be brought LOW to
complete the operation.
TRIPx
threshold to a new voltage which is
Voltage (x=1, 2)
TRIPx
, and a 00h Data Byte in
Note:
This operation does not corrupt the memory
array.
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
Timer Start
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X40015V8-B | Dual Voltage Monitor with Integrated CPU Supervisor |
| X40015V8-C | Dual Voltage Monitor with Integrated CPU Supervisor |
| X40014S8I-A | Dual Voltage Monitor with Integrated CPU Supervisor |
| X40015V8I-A | G.P. RELAY |
| X40015V8I-B | G.P. RELAY |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X40015V8-B | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Dual Voltage Monitor with Integrated CPU Supervisor |
| X40015V8-C | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Dual Voltage Monitor with Integrated CPU Supervisor |
| X40015V8I-A | 功能描述:IC VOLTAGE MONITOR DUAL 8-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 |
| X40015V8I-AT1 | 功能描述:IC VOLTAGE MONITOR DUAL 8-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 |
| X40015V8I-B | 功能描述:IC VOLTAGE MONITOR DUAL 8-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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。