參數(shù)資料
型號: X40620V8E-3.1A
英文描述: Analog IC
中文描述: 模擬IC
文件頁數(shù): 1/22頁
文件大?。?/td> 401K
代理商: X40620V8E-3.1A
REV 1.24 11/27/00
Characteristics subject to change without notice.
1 of 22
www.xicor.com
Preliminary Information
16K
X4163/5
2K x 8 Bit
CPU Supervisor with 16K EEPROM
FEATURES
Selectable watchdog timer
Low V
CC
detection and reset assertion
—Four standard reset threshold voltages
—Adjust low V
CC
reset threshold voltage using
special programming sequence
—Reset signal valid to V
Low power CMOS
—<20μA max standby current, watchdog on
—<1μA standby current, watchdog OFF
—3mA active current
16Kbits of EEPROM
—64-byte page write mode
—Self-timed write cycle
—5ms write cycle time (typical)
Built-in inadvertent write protection
—Power-up/power-down protection circuitry
400kHz 2-wire interface
2.7V to 5.5V power supply operation
Available Packages
—8-lead SOIC
—8-lead TSSOP
CC
= 1V
DESCRIPTION
The X4163/5 combines four popular functions, Power-on
Reset Control, Watchdog Timer, Supply Voltage
Supervision, and Serial EEPROM Memory in one
package. This combination lowers system cost,
reduces board space requirements, and increases reli-
ability.
Applying power to the device activates the power on
reset circuit which holds RESET/RESET active for a
period of time. This allows the power supply and oscilla-
tor to stabilize before the processor can execute code.
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 RESET/
RESET signal. The user selects the interval from three
preset values. Once selected, the interval does not
change, even after cycling the power.
The device’s low V
user’s system from low voltage conditions, resetting the
system when V
CC
falls below the set minimum V
point. RESET/RESET is asserted until V
proper operating level and stabilizes. Four industry stan-
dard V
TRIP
thresholds are available, however, Xicor’s
unique circuits allow the threshold to be reprogrammed
to meet custom requirements or to fine-tune the thresh-
old for applications requiring higher precision.
CC
detection circuitry protects the
CC
trip
CC
returns to
BLOCK DIAGRAM
Watchdog
Timer Reset
Data
Register
Command
Decode &
Control
Logic
SDA
SCL
V
CC
Reset &
Watchdog
Timebase
Power on and
Low Voltage
Generation
V
TRIP
+
-
RESET (X4163)
RESET (X4165)
Reset
Status
Register
EEPROM Array
Protect Logic
Watchdog Transition
Detector
WP
V
CC
Threshold
Reset logic
B
2
S0
S1
相關(guān)PDF資料
PDF描述
X40620 RTC Module With CPU Supervisor
X4163 RTC Module With CPU Supervisor
X4165 RTC Module With CPU Supervisor
X4165 16MHZ, MLF, IND TEMP(MCU AVR)
X4165S8 CPU Supervisor with 16K EEPROM
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