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參數資料
| 型號： | X40420S14-A |
| 元件分類： | 電源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14 |
| 封裝： | PLASTIC, SOIC-14 |
| 文件頁數： | 1/25頁 |
| 文件大?。?/td> | 547K |
| 代理商： | X40420S14-A |
REV 1.2.15 2/11/04
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)
—VTRIP2 Programmable down to 0.9V
—Adjust low voltage reset threshold voltages
using special programming sequence
—Reset signal valid to VCC = 1V
—Monitor two voltages or detect power fail
Battery Switch Backup
VOUT: 5mA to 50mA from VCC; or 250A from
VBATT
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
—25A typical standby current, watchdog on
—6A typical standby current, watchdog off
—1A 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
APPLICATIONS
Communications Equipment
—Routers, Hubs, Switches
—Disk arrays
Industrial Systems
—Process Control
—Intelligent Instrumentation
Computer Systems
—Desktop Computers
—Network Servers
X40420/21
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 VCC 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.
Standard VTRIP1 Level Standard VTRIP2 Level Suffix
4.6V (+/-1%)
2.9V(+/-1.7%)
-A
4.6V (+/-1%)
2.6V (+/-2%)
-B
2.9V(+/-1.7%)
1.6V (+/-3%)
-C
See “Ordering Information” for more details
For Custom Settings, call Xicor.
BLOCK DIAGRAM
V2FAIL
WDO
MR
LOWLINE
RESET
X40420
X40421
+
-
V2 Monitor
Logic
VTRIP2
Fault Detection
Register
Status
Register
EEPROM
Array
Data
Register
Command
Decode Test
& Control
Logic
Power on,
Manual Reset
Low Voltage
Reset
Generation
VCC Monitor
Logic
V2MON
SDA
WP
SCL
VCC
(V1MON)
Watchdog
and
Reset Logic
System
Switch
Battery
VBATT
VOUT
BATT-ON
+
-
VTRIP1
VOUT
Monitor Voltages: 5V to 1.6V
Memory Security
Battery Switch Backup
VOUT 5mA to 50mA
New Features
Preliminary Datasheet
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| X40420S14-C | 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-CT1 | 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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