Overview
The Intersil X5168 and X5169 devices are a series of CPU supervisors that incorporate a 16Kbit SPI EEPROM memory with block lock protection. They are designed for power-on reset control, supply voltage supervision, and memory protection. The integration of these functions results in lower system cost, reduced board space, and increased reliability.
Features
These components offer the following features:
- Low Vcc Detection and Reset Assertion with five standard reset threshold voltages.
- Programmable Vcc reset threshold voltage is using a special sequence.
- Reset signal remains valid down to Vcc of 1V.
- Efficient power usage contributing to extended battery life, which includes <50pA standby current with the watchdog active and <1pA with watchdog off.
- 16Kbits of EEPROM memory with built-in inadvertent write protection, featuring a variety of protection modes for the memory array and in-circuit programmable ROM mode.
- Fast 2MHz SPI Interface with Modes (0,0) and (1,1).
- Minimized EEPROM programming time with a 32-byte page write mode and 5ms typical write cycle time.
- Operation support from 2.7V to 5.5V or 4.5V to 5.5V power supply voltages.
- Availability in several packages: 14 Ld TSSOP, 8 Ld SOIC, and 8 Ld PDIP.
- Pb-Free Plus Anneal (RoHS Compliant).
Operating Mechanism
These devices commence the power-on reset function upon receiving power, which holds the RESET/RESET active, permitting the power supply and the oscillator to stabilize. The low Vcc detection mechanism maintains RESET/RESET active below a specific voltage threshold ensuring system integrity during low voltage conditions. The resetting continues until Vcc recuperates to a stable operating level.
Ordering Information
Intersil provides a range of part numbers for the X5168/X5169 series, distinguished by different parameters such as supply voltage (Vcc) range, reset voltage (VTRIP) range, operating temperature, and package type. They have standard configurations that operate from 0°C to 70°C and industrial grade versions from -40°C to 85°C. Surface and through-hole mount packages are available including Pb-free options in compliance with RoHS standards.
Static Precautions
The X5168/X5169 devices are sensitive to electrostatic discharge and require proper integrated circuit handling procedures.
References:
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