参数资料
| 型号： | X40421V14I-AT1 |
| 厂商： | Intersil |
| 文件页数： | 3/25页 |
| 文件大小： | 0K |
| 描述： | IC VOLT MON DUAL SUP/SW 14-TSSOP |
| 标准包装： | 2,500 |
| 类型： | 多压监控器 |
| 监视电压数目： | 2 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 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： | 带卷 (TR) |
X40420, X40421
Low V CC detection circuitry protects the user’s system
from low voltage conditions, resetting the system
when V CC falls below the minimum V TRIP1 point.
RESET/RESET is active until V CC returns to proper
operating level and stabilizes. A second voltage moni-
tor circuit tracks the unregulated supply to provide a
power fail warning or monitors different power supply
voltage. Three common low voltage combinations are
available, however, Intersil’s unique circuits allows the
threshold for either voltage monitor to be repro-
grammed to meet special needs or to fine-tune the
threshold for applications requiring higher precision.
A manual reset input provides debounce circuitry for
Once selected, the interval does not change, even
after cycling the power.
The memory portion of the device is a CMOS Serial
EEPROM array with Intersil’s Block Lock protection.
The array is internally organized as x 8. The device
features an 2-wire interface and software protocol
allowing operation on a two-wire bus.
The device utilizes Intersil’s proprietary Direct Write ?
cell, providing a minimum endurance of 100,000
cycles and a minimum data retention of 100 years.
Example Application
V BATT
V CC
minimum reset component count.
A battery switch circuit compares V CC with V BATT input
and connects V OUT to whichever is higher. This pro-
vides voltage to external SRAM or other circuits in the
event of main power failure. The X40420, X40421 can
drive 50mA from V CC to 250μA from V BATT . The
device only switches to V BATT when V CC drops below
the low V CC voltage threshold and V BATT .
The Watchdog Timer provides an independent protec-
tion mechanism for microcontrollers. When the micro-
controller fails to restart a timer within a selectable
time out interval, the device activates the WDO signal.
Unreg.
Supply
5V
REG
+
BATT-ON
V CC
V OUT
X40420, X40421
V2MON
V2FAIL
VDO
RESET
MR
SCL SDA
Manual
Reset
Enable
SRAM
Addr
Addr
uC
NMI
IRQ
RESET
The user selects the interval from three preset values.
PIN CONFIGURATION
X40420
14-Pin SOIC, TSSOP
X40421
14-Pin SOIC, TSSOP
I 2 C
V2FAIL
V2MON
LOWLINE
WDO
MR
RESET
V SS
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V CC
BATT-ON
V OUT
V BATT
WP
SCL
SDA
V2FAIL
V2MON
LOWLINE
WDO
MR
RESET
V SS
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V CC
BATT-ON
V OUT
V BATT
WP
SCL
SDA
PIN DESCRIPTION
Pin
1
2
3
4
5
Name
V2FAIL
V2MON
LOWLINE
WDO
MR
Function
V2 Voltage Fail Output. This open drain output goes LOW when V2MON is less than V TRIP2 and
goes HIGH when V2MON exceeds V TRIP2 . There is no power-up reset delay circuitry on this pin.
V2 Voltage Monitor Input. When the V2MON input is less than the V TRIP2 voltage, V2FAIL goes
LOW. This input can monitor an unregulated power supply with an external resistor divider or can
monitor a second power supply with no external components. Connect V2MON to V SS or V CC when
not used.
Early Low V CC Detect. This open drain output signal goes LOW when V CC < V TRIP1 .
When V CC > V TRIP1 , this pin is pulled high with the use of an external pull up resistor.
WDO Output. WDO is an active LOW, open drain output which goes active whenever the watchdog
timer goes active.
Manual Reset Input. Pulling the MR pin LOW initiates a system reset. The RESET/RESET pin will remain
HIGH/LOW until the pin is released and for the t PURST thereafter. It has an internal pull up resistor.
3
May 25, 2006
相关PDF资料 |
PDF描述 |
|---|---|
| X40421V14I-A | IC VOLT MON DUAL SUP/SW 14-TSSOP |
| X40421V14-CT1 | IC VOLT MON DUAL SUP/SW 14-TSSOP |
| RCM43DTMI | CONN EDGECARD 86POS R/A .156 SLD |
| X40421V14-C | IC VOLT MON DUAL SUP/SW 14-TSSOP |
| X40421V14-BT1 | IC VOLT MON DUAL SUP/SW 14-TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| X40421V14I-B | 功能描述:IC VOLT MON DUAL SUP/SW 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 |
| X40421V14I-BT1 | 功能描述:IC VOLT MON DUAL SUP/SW 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 |
| X40421V14I-C | 功能描述:IC VOLT MON DUAL SUP/SW 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 |
| X40421V14I-CT1 | 功能描述:IC VOLT MON DUAL SUP/SW 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 |
| X40426V14I | 功能描述:IC SUPERVISR CPU IIC LVS 14TSSOP 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 |
发布紧急采购，3分钟左右您将得到回复。