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參數資料
| 型號： | X40420 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Dual Voltage Monitor with Intergrated CPU Supervisor |
| 中文描述： | 雙電壓監視器集成CPU監控 |
| 文件頁數： | 1/25頁 |
| 文件大小： | 156K |
| 代理商： | X40420 |
REV 1.2.14 7/12/02
Characteristics subject to change without notice.
1 of 25
www.xicor.com
4kbit EEPROM
X40420/X40421
Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch
FEATURES
Dual voltage detection and reset assertion
—Three standard reset threshold settings
(4.6V/2.9V, 4.6V/2.6V, 2.9V/1.6V)
—V
TRIP2
Programmable down to 0.9V
—Adjust low voltage reset threshold voltages
using special programming sequence
—Reset signal valid to V
—Monitor two voltages or detect power fail
Battery Switch Backup
V
OUT
: 5mA to 50mA from V
V
BATT
Fault detection register
Selectable power on reset timeout
(0.05s, 0.2s, 0.4s, 0.8s)
Selectable watchdog timer interval
(25ms, 200ms, 1.4s, off)
Debounced manual reset input
Low power CMOS
—25μA typical standby current, watchdog on
—6μA typical standby current, watchdog off
—1μA typical battery current in backup mode
4Kbits of EEPROM
—16 byte page write mode
—Self-timed write cycle
—5ms write cycle time (typical)
Built-in inadvertent write protection
—Power-up/power-down protection circuitry
—Block lock protect 0 or 1/2, of EEPROM
400kHz 2-wire interface
2.7V to 5.5V power supply operation
Available packages
—14-lead SOIC, TSSOP
CC
= 1V
CC
; or 250μA from
APPLICATIONS
Communications Equipment
—Routers, Hubs, Switches
—Disk arrays
Industrial Systems
—Process Control
—Intelligent Instrumentation
Computer Systems
—Desktop Computers
—Network Servers
X40420/21
Standard V
DESCRIPTION
The X40420/21 combines power-on reset control,
watchdog timer, supply voltage supervision, and sec-
ondary supervision, manual reset, and Block Lock
protect serial EEPROM in one package. This combina-
tion lowers system cost, reduces board space require-
ments, and increases reliability.
Applying voltage to V
CC
activates the power on reset
circuit which holds RESET/RESET active for a period of
time. This allows the power supply and system oscillator
to stabilize before the processor can execute code.
TRIP1
Level Standard V
TRIP2
Level
Suffix
-A
-B
-C
4.6V (+/-1%)
4.6V (+/-1%)
2.9V(+/-1.7%)
See “Ordering Information” for more details
For Custom Settings, call Xicor.
2.9V(+/-1.7%)
2.6V (+/-2%)
1.6V (+/-3%)
BLOCK DIAGRAM
V2FAIL
WDO
MR
RESET
X40420
LOWLINE
RESET
X40421
+
-
V2Logic
V
TRIP2
FaRegister
Status
Register
EEPROM
Array
Data
Register
Command
Decode Test
& Control
Logic
MPower on,
LoReset
Generation
V
CC
Monitor
V2MON
SDA
WP
SCL
V
CC
(V1MON)
BATT-ON
Watchdog
and
Reset Logic
System
Battery
Switch
V
BATT
V
OUT
+
-
V
TRIP1
V
OUT
V
OUT
V
OUT
Monitor Voltages: 5V to 1.6V
Memory Security
Battery Switch Backup
V
OUT
5mA to 50mA
New Features
Preliminary Datasheet
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| X40421 | DIODE, TVS, QUAD, 12VR |
| X40421S14-A | Dual Voltage Monitor with Intergrated CPU Supervisor |
| X40421S14-B | Dual Voltage Monitor with Intergrated CPU Supervisor |
| X40421S14-C | Dual Voltage Monitor with Intergrated CPU Supervisor |
| X40421S14I-A | Dual Voltage Monitor with Intergrated CPU Supervisor |
相關代理商/技術參數 |
參數描述 |
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| X40420_06 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch |
| X40420S14-A | 功能描述:IC VOLT MON DUAL SUP/SW 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 監控器 系列:- 標準包裝:100 系列:- 類型:簡單復位/加電復位 監視電壓數目:1 輸出:- 復位:低有效 復位超時: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） 供應商設備封裝:8-TSSOP 包裝:管件 |
| X40420S14-AT1 | 功能描述:IC VOLT MON DUAL SUP/SW 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 監控器 系列:- 標準包裝:100 系列:- 類型:簡單復位/加電復位 監視電壓數目:1 輸出:- 復位:低有效 復位超時: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） 供應商設備封裝:8-TSSOP 包裝:管件 |
| X40420S14-B | 功能描述:IC VOLT MON DUAL SUP/SW 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 監控器 系列:- 標準包裝:100 系列:- 類型:簡單復位/加電復位 監視電壓數目:1 輸出:- 復位:低有效 復位超時: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） 供應商設備封裝:8-TSSOP 包裝:管件 |
| X40420S14-BT1 | 功能描述:IC VOLT MON DUAL SUP/SW 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 監控器 系列:- 標準包裝:100 系列:- 類型:簡單復位/加電復位 監視電壓數目:1 輸出:- 復位:低有效 復位超時: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） 供應商設備封裝:8-TSSOP 包裝:管件 |
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