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參數(shù)資料
| 型號： | 40430X |
| 英文描述： | 4kbit EEPROM, Triple Voltage Monitor with Integrated CPU Supervisor |
| 中文描述： | 4kbit的EEPROM，三電壓監(jiān)視器集成CPU監(jiān)控 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大?。?/td> | 421K |
| 代理商： | 40430X |
REV 1.2.3 11/28/00
Characteristics subject to change without notice.
1 of 24
www.xicor.com
Preliminary Information
4kbit EEPROM
X40430/X40431
Triple Voltage Monitor with Integrated CPU Supervisor
FEATURES
Triple voltage detection and reset assertion
—Three standard reset threshold settings
(4.6V/2.9V/1.7V, 4.4V/2.6V/1.7V,
2.9V/1.7V/2.4V)
—Adjust low voltage reset threshold voltages
using special programming sequence
—Reset signal valid to V
—Monitor three voltages or detect power fail
Fault detection register
Selectable power on reset timeout
Selectable watchdog timer interval
Debounced manual reset input
Low power CMOS
—30μA typical standby current, watchdog on
—10μA typical standby current, watchdog off
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, 1/4, 1/2, all of EEPROM
400kHz I
C interface
2.4V to 5.5V power supply operation
Available packages
—14-lead SOIC, TSSOP
CC
= 1V
2
DESCRIPTION
The X40430/31 combines power-on reset control,
watchdog timer, supply voltage supervision, secondary
and third voltage supervision, manual reset, and Block
Lock
protect serial EEPROM in one package. This
combination lowers system cost, reduces board space
requirements, and increases reliability.
Applying voltage to V
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.
CC
activates the power on reset
Low V
from low voltage conditions, resetting the system when
V
CC
falls below the minimum V
RESET is active until V
CC
returns to proper operating
level and stabilizes. A second and third voltage monitor
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, Xicor’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.
CC
detection circuitry protects the user’s system
TRIP1
point. RESET/
BLOCK DIAGRAM
V3FAIL
V2FAIL
WDO
MR
LOWLINE
RESET
X40431
X40430
+
V
TRIP2
-
V3 Monitor
Logic
V2 Monitor
Logic
Fault Detection
Register
Status
Register
EEPROM
Array
Data
Register
Command
Decode Test
& Control
Logic
Power on,
Manual Reset
Low Voltage
Reset
Generation
V
CC
Monitor
Logic
V3MON
V2MON
SDA
WP
SCL
V
CC
(V1MON)
+
V
TRIP3
-
+
V
TRIP1
-
Watchdog
and
Reset Logic
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 40430A | 4kbit EEPROM, Triple Voltage Monitor with Integrated CPU Supervisor |
| 40430B | 4kbit EEPROM, Triple Voltage Monitor with Integrated CPU Supervisor |
| 4043B | Quadruple R/S latch with 3-state outputs |
| 4044-UCA | 300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit |
| 4044-UCB | 300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 404310 | 制造商:MAGNUM / COOPER 功能描述: |
| 40431-0010 | 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:MS4800-ADPT-TXS |
| 40431-0020 | 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:MS4800-ADPT-TXM |
| 40431-0030 | 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:MS4800-ADPT-RX |
| 40-4310-1-02 | 制造商:Concord Electronics Inc 功能描述: |
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