X45RK-33, X462, X4643 Selling Leads, Datasheet
MFG:MITSUBISHI Package Cooled:QFP D/C:00+
X45RK-33, X462, X4643 Datasheet download
Part Number: X45RK-33
MFG: MITSUBISHI
Package Cooled: QFP
D/C: 00+
X45RK-33, X462, X4643
- Table of contents:
Info of X45RK-33
Info of X462
Info of X4643
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About X45620
PDF/DataSheet Download
Datasheet: X45620
File Size: 379419 KB
Manufacturer: INTERSIL [Intersil Corporation]
Download : Click here to Download
About X46402
PDF/DataSheet Download
Datasheet: X46402
File Size: 105116 KB
Manufacturer: XICOR [Xicor Inc.]
Download : Click here to Download
About X4643
PDF/DataSheet Download
Datasheet: X4643
File Size: 340346 KB
Manufacturer: INTERSIL [Intersil Corporation]
Download : Click here to Download
X4643 General Description
The X4643/5 combines four popular functions, Poweron 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 reliability.
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 oscillator to stabilize before the processor can execute code.
The Watchdog Timer provides an independent protection mechanism for microcontrollers. When the microcontroller 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 VCC detection circuitry protects the user's system from low voltage conditions, resetting the system when VCC falls below the set minimum VCC trip point. RESET/RESET is asserted until VCC returns to proper operating level and stabilizes. Four industry standard VTRIP thresholds are available, however, Intersil's unique circuits allow the threshold to be reprogrammed to meet custom requirements or to fine-tune the threshold for applications requiring higher precision.
X4643 Maximum Ratings
Temperature under bias .................... -65°C to +135°C
Storage temperature ......................... -65°C to +150°C
Voltage on any pin with respect to VSS........ -1.0V to +7V
D.C. output current ....................................................5mA
Lead temperature (soldering, 10 seconds)........... 300°C
Storage temperature ......................... -65°C to +150°C
Voltage on any pin with respect to VSS........ -1.0V to +7V
D.C. output current ....................................................5mA
Lead temperature (soldering, 10 seconds)........... 300°C
X4643 Features
• Selectable watchdog timer
• Low VCC detection and reset assertion
-Four standard reset threshold voltages
-Adjust low VCC reset threshold voltage using special programming sequence
-Reset signal valid to VCC = 1V
• Low power CMOS
-<20A max standby current, watchdog on
-<1A standby current, watchdog off
-3mA active current
• 64Kbits 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
• Low VCC detection and reset assertion
-Four standard reset threshold voltages
-Adjust low VCC reset threshold voltage using special programming sequence
-Reset signal valid to VCC = 1V
• Low power CMOS
-<20A max standby current, watchdog on
-<1A standby current, watchdog off
-3mA active current
• 64Kbits 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
X4643 Connection Diagram
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