These devices combine four popular functions, Power-on Reset Control, Watchdog Timer, Supply Voltage Supervision, and Block Lock™ Protect 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 minimum VCC trip point. RESET/RESET is asserted until VCC returns to proper operating level and stabilizes. Five 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.

Features

  • Selectable watchdog timer
  • Low VCC detection and reset assertion
  • Five standard reset threshold voltages
  • Re-program low VCC reset threshold voltage using special programming sequence
  • Reset signal valid to VCC = 1V
  • Determine watchdog or low voltage reset with a volatile flag bit
  • Long battery life with low power consumption
  • <50µA max standby current, watchdog on
  • <1µA max standby current, watchdog off
  • <400µA max active current during read
  • 16kbits of EEPROM
  • Built-in inadvertent write protection
  • Power-up/power-down protection circuitry
  • Protect 0, 1/4, 1/2 or all of EEPROM array with Block Lock™ protection
  • In-circuit programmable ROM mode
  • 2MHz SPI interface modes (0,0 & 1,1)
  • Minimize EEPROM programming time
  • 32-byte page write mode
  • Self-timed write cycle
  • 5ms write cycle time (typical)
  • 2.7V to 5.5V and 4.5V to 5.5V power supply operation
  • Available packages: 14 Ld TSSOP, 8 Ld SOIC, 8 Ld PDIP
  • Pb-free plus anneal available (RoHS compliant)

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active SOICN Tube 100
Availability
Active SOICN Tube 100
Availability
Active SOICN Tube 100
Availability
Active SOICN Reel 2500
Availability
Active SOICN Tube 100
Availability
Active SOICN Reel 2500
Availability
Active SOICN Tube 100
Availability
Active SOICN Tube 100
Availability
Active SOICN Tube 100
Availability
Active SOICN Reel 2500
Availability
Active SOICN Reel 2500
Availability
Active SOICN Tube 100
Availability
Active SOICN Reel 2500
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
X5163, X5165 Datasheet Datasheet PDF 866 KB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
AN98: Interfacing the Intersil X5163/323/643 CPU Supervisors to NEC 78K Microcontrollers Application Note PDF 418 KB
AN1141: Using the Xicor X5163/X5323/X5643 CPU Supervisors with the 68HC11 Microcontroller Application Note PDF 319 KB
AN1143: Designing with Xicor's X5000 Series CPU Supervisors Application Note PDF 265 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
PCNs & PDNs
PCN13058 - Fab site change, C5 Technology transfer to Palm Bay from XFAB and Yamaha for the listed products (SOICN Product Change Notice PDF 204 KB
PCN12085 - 8l, 14l, 16l SOIC w/ Gold Bond Wire @ ATP as Alternate Assembly Site Product Change Notice PDF 152 KB
Other
PIN19028 - Q3 Cy 19 Price Increase Notice Price Increase Notice PDF 208 KB
PA14042 - Minimum Line Quantity Change Product Advisory PDF 363 KB