参数资料
| 型号： | X40239S16I-BT1 |
| 厂商： | Intersil |
| 文件页数： | 12/36页 |
| 文件大小： | 0K |
| 描述： | IC VOLTAGE MON TRPL EE 16-SOIC |
| 标准包装： | 1,000 |
| 类型： | 多压监控器 |
| 监视电压数目： | 3 |
| 输出： | 开路漏极，开路漏极 |
| 复位： | 高有效/低有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 1.75V，2.95V，4.45V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页当前第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页
X40231, X40233, X40235, X40237, X40239
V CC
V CC (Max.)
V TRIP1
t TRANS
t PURST
t
0
Maximum Wiper Recall time
Figure 7.
A nonvolatile write to a DCP will change the “wiper posi-
DCP Power-up
tion” by simultaneously writing new data to the associ-
ated WCR and NVM. Therefore, the new “wiper position”
setting is recalled into the WCR after V CC of the X4023x
I7
WT
I6
0
I5
0
I4
0
I3
0
I2
0
I1
P1
I0
P0
is powered down and then powered back up.
A volatile write operation to a DCP however, changes
the “wiper position” by writing new data to the associ-
WRITE TYPE
DCP SELECT
ated WCR only. The contents of the associated NVM
register remains unchanged. Therefore, when V CC to
the device is powered down then back up, the “wiper
position” reverts to that last position written to the DCP
using a nonvolatile write operation.
WT ?
0
1
Description
Select a Volatile Write operation to be performed
on the DCP pointed to by bits P1 and P0
Select a Nonvolatile Write operation to be per-
formed on the DCP pointed to by bits P1 and P0
Both volatile and nonvolatile write operations are exe-
cuted using a three byte command sequence: (DCP)
? This bit has no effect when a Read operation is being performed.
Slave Address Byte, Instruction Byte, followed by a
Data Byte (See Figure 9)
Figure 8.
Instruction Byte Format
A DCP Read operation allows the user to “read out”
the current “wiper position” of the DCP, as stored in
the associated WCR. This operation is executed using
the Random Address Read command sequence, con-
sisting of the (DCP) Slave Address Byte followed by
an Instruction Byte and the Slave Address Byte again
(Refer to Figure 10).
Instruction Byte
While the Slave Address Byte is used to select the
DCP devices, an Instruction Byte is used to determine
which DCP is being addressed.
The Instruction Byte (Figure 8) is valid only when the
Device Type Identifier and the Internal Device Address
bits of the Slave Address are set to 1010111. In this
case, the two Least Significant Bit’s (I1 - I0) of the
Instruction Byte are used to select the particular DCP
(0 - 2). In the case of a Write to any of the DCPs (i.e.
12
the LSB of the Slave Address is 0), the Most Signifi-
cant Bit of the Instruction Byte (I7), determines the
Write Type (WT) performed.
If WT is “1”, then a Nonvolatile Write to the DCP occurs.
In this case, the “wiper position” of the DCP is changed
by simultaneously writing new data to the associated
WCR and NVM. Therefore, the new “wiper position”
setting is recalled into the WCR after V CC of the X4023x
has been powered down then powered back up.
If WT is “0” then a DCP Volatile Write is performed.
This operation changes the DCP “wiper position” by
writing new data to the associated WCR only. The
contents of the associated NVM register remains
unchanged. Therefore, when V CC to the device is
powered down then back up, the “wiper position”
reverts to that last written to the DCP using a nonvol-
atile write operation.
FN8115.0
April 11, 2005
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