X40421
X40421 is Dual Voltage Monitor manufactured by Xicor.
- Part of the X40420 comparator family.
- Part of the X40420 comparator family.
Features
- -
- - Monitor Voltages: 5V to 1.6V Memory Security Battery Switch Backup VOUT 5m A to 50m A
Preliminary Datasheet
4kbit EEPROM
X40420/X40421
APPLICATIONS
- munications Equipment
- Routers, Hubs, Switches
- Disk arrays
- Industrial Systems
- Process Control
- Intelligent Instrumentation
- puter Systems
- Desktop puters
- Network Servers X40420/21
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: 5m A to 50m A from VCC; or 250µA 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
- 25µA typical standby current, watchdog on
- 6µA typical standby current, watchdog off
- 1µA 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...
