参数资料
| 型号： | X40034V14I-C |
| 厂商： | Intersil |
| 文件页数： | 8/23页 |
| 文件大小： | 0K |
| 描述： | IC VOLTAGE MONITOR TRPL 14-TSSOP |
| 标准包装： | 95 |
| 类型： | 多压监控器 |
| 监视电压数目： | 3 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 高有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 1V，2.9V，4.6V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 14-TSSOP |
| 包装： | 管件 |
X40030, X40031, X40034, X40035
V TRIPX
(X = 1, 2, 3)
V CC /V2MON/V3MON
V P
WDO
SCL
0
7
0
7
0
7
SDA
A0h
00h
FIGURE 3. V TRIPX SET/RESET CONDITIONS
t WC
Watchdog Timer
The Watchdog Timer circuit monitors the microprocessor
activity by monitoring the SDA and SCL pins. A standard
read or write sequence to any slave address byte restarts
the watchdog timer and prevents the WDO signal from going
active. A minimum sequence to reset the watchdog timer
requires four microprocessor instructions namely, a Start,
Clock Low, Clock High and Stop. The state of two nonvolatile
control bits in the Status Register determine the watchdog
timer period. The microprocessor can change these
watchdog bits by writing to the X40030, X40031, X40034,
X40035 control register (also refer to page 21).
0.6μs
1.3μs
SCL
SDA
Setting a V TRIPx Voltage (x = 1, 2, 3)
There are two procedures used to set the threshold voltages
(V TRIPx ), depending upon if the threshold voltage to be stored
is higher or lower than the present value. For example, if the
present V TRIPx is 2.9V and the new V TRIPx is 3.2V, 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, 3)
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 voltage to the corresponding input pin
(Vcc(V1MON), V2MON or V3MON). 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 , 09h for V TRIP2 , and 0Dh for V TRIP3 , and a 00h Data
START
WDT RESET
STOP
Byte in order to program V TRIPx . The STOP bit following a
valid write operation initiates the programming sequence. Pin
FIGURE 4. WATCHDOG RESTART
V1, V2 and V3 Threshold Program
Procedure (Optional)
The X40030 is shipped with standard V1, V2 and V3
threshold (V TRIP1, V TRIP2, V TRIP3 ) 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 X40030, X40031, X40034,
X40035 trip points may be adjusted. The procedure is
described in the following and uses the application of a high
voltage control signal.
8
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, V2FAIL and V3FAIL) switch. The voltage
at which this occurs is the V TRIPX (actual).
CASE A
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).
CASE B
If the V TRIPX (actual), is higher than the V TRIPX (desired),
perform the reset sequence as described in the next section.
FN8114.2
August 25, 2008
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相关代理商/技术参数 |
参数描述 |
|---|---|
| X40034V14I-CT1 | 功能描述:IC VOLTAGE MONITOR TRPL 14-TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:100 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:- 复位:低有效 复位超时:最小为 100 ms 电压 - 阀值:4.38V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:8-TSSOP 包装:管件 |
| X40034V14IZ-A | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Triple Voltage Monitor with Integrated CPU Supervisor |
| X40034V14IZ-B | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Triple Voltage Monitor with Integrated CPU Supervisor |
| X40034V14Z-A | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Triple Voltage Monitor with Integrated CPU Supervisor |
| X40034V14Z-B | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Triple Voltage Monitor with Integrated CPU Supervisor |
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