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[Application]
Dual Voltage Monitoring Chip with Watchdog and 4K EEPROM
[Performance Parameters]
Available in SOIC-14 and TSSOP-14 packages. Operating voltage range: 2.7V to 5.5V.
Features:
1. Dual Voltage Monitoring - Three Standard Reset Thresholds: 4.6V/2.9V, 4.6V/2.6V, 2.9V/1.6V. VTIRP2 can be programmed down to 0.9V. Adjustable reset threshold voltage with specific programming timing. Reset effective at VCC = 1V. Can monitor two voltages or detect power failure.
2. Backup Power Switching Functionality.
3. Supply Current: VOUT @ 5mA to 50mA, VBAT @ 250μA.
4. Failure Detection Register.
5. Optional Power-On Reset Output Time: 0.05S, 0.2S, 0.4S, 0.8S.
6. Optional Watchdog Reset Period: 25ms, 200ms, 1.4s, Off.
7. Manual Reset Input.
8. Ultra-Low Power CMOS Process:
- Standby Current (Watchdog Timer On): Typical value of -25μA.
- Standby Current (Watchdog Timer Off): Typical value of -6μA.
- Standby Current (Standby Battery Mode): Typical value of -1μA.
9. 4K-bit EEPROM:
- Page Write Mode: 16 Bytes per Page.
- Typical Write Cycle Time: 5ms.
10. Write Protection Function:
- Power-On/Power-Down Protection Circuit.
- Block Protection.
11. Two-Wire Interface Compatible with I²C at 400KHz.
X40420 Standard Reset Threshold Voltage
[Interchange Compatibility]
[Original (Chinese) Data Sheet Manual Foot Function Parameter Package]
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This document provides an overview of the technical specifications for a dual voltage monitoring chip equipped with a watchdog and 4K EEPROM. The device is available in SOIC-14 and TSSOP-14 packages, with an operating voltage range of 2.7V to 5.5V. Key features include dual voltage monitoring with multiple reset thresholds, backup power switching, ultra-low power consumption, EEPROM functionality, and compatibility with the I²C protocol. The product is designed for applications requiring precise voltage monitoring and reliable system resets, making it suitable for various industrial and consumer electronics.
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