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參數(shù)資料
| 型號(hào)： | X40239 |
| 英文描述： | Integrated System Management IC Triple Voltage Monitors, POR, 2 kbit EEPROM Memory, and Single/Dual DCP(帶2K EEPROM和單/雙數(shù)字電位器的三路電壓監(jiān)控器) |
| 中文描述： | 綜合系統(tǒng)管理IC三電壓監(jiān)測(cè)器，葡萄牙，2千比特的EEPROM內(nèi)存，單/雙副處長(zhǎng)（帶2K的EEPROM和單/雙數(shù)字電位器的三路電壓監(jiān)控器） |
| 文件頁數(shù)： | 22/39頁 |
| 文件大小： | 215K |
| 代理商： | X40239 |
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X4023x
– Preliminary Information
Characteristics subject to change without notice.
22 of 39
REV 1.0.4 7/12/01
www.xicor.com
V2MON Monitoring
The X4023x asserts the V2FAIL output HIGH if the volt-
age V2MON exceeds the corresponding V
old (See Figure 21). The bit V2FS in the CR register is
then set to a “0” (assuming that it has been set to “1”
after system initialization).
TRIP2
thresh-
The V2FAIL output may remain active HIGH with V
down to 1V. (See Figure 21)
CC
V3MON Monitoring
The X4023x asserts the V3FAIL output HIGH if the volt-
age V3MON exceeds the corresponding V
old (See Figure 21). The bit V3FS in the CR register is
then set to a “0” (assuming that it has been set to “1”
after system initialization).
TRIP3
thresh-
The V3FAIL output may remain active HIGH with V
down to 1V. V
TRIPx
Thresholds (x=1,2,3)
CC
The X4023x is shipped with pre-programmed threshold
(V
TRIPx
) voltages. In applications where the required
thresholds are different from the default values, or if a
higher precision / tolerance is required, the X4023x trip
points may be adjusted by the user, using the steps
detailed below.
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=1,2,3)
is 2.9 V and the new
Figure 21. Voltage Monitor Response
Vx
VxFAIL
0V
0V
V
TRIPx
(x = 2,3)
0 Volts
V
TRIP1
V
CC
0
1
2 3
4
5 6
7
SCL
SDA
A0h
0
1
2 3
4
5 6
7
WP
V
P
0
1
2 3
4
5 6
7
V
TRIPx
V2MON,
V3MON
01h
sets V
TRIP1
09h
sets V
TRIP2
0Dh
sets V
TRIP3
Figure 22. Setting V
TRIPx
to a higher level (x=1,2,3).
Data Byte
V
CC
00h
S
T
A
R
T
All others Reserved.
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