CAT1162: CPU Supervisor with 16 k Serial EEPROM Memory

The CAT1162 is a complete memory and supervisory solution for microcontroller-based systems. A serial EEPROM memory (16K) with hardware memory write protection, a system power supervisor with brown out protection and a watchdog timer are integrated together in low power CMOS technology. Memory interface is via an I²C bus.The 1.6-second watchdog circuit returns a system to a known good state if a software or hardware glitch halts or 'hangs' the system. The lower cost CAT1162 does not have a watchdog timer.The power supply monitor and reset circuit protects memory and system controllers during power up/down and against brownout conditions. Five reset threshold voltages support 5.0 V, 3.3 V and 3.0 V systems. If power supply voltages are out of tolerance reset signals become active, preventing the system microcontroller, ASIC or peripherals from operating. Reset signals become inactive typically 200 ms after the supply voltage exceeds the reset threshold level. With both active high and low reset signals, interface to microcontrollers and other ICs is simple. In addition, a reset pin can be used as a debounced input for push-button manual reset capability.The CAT1162 memory features a 16-byte page. In addition, hardware data protection is provided by a write protect pin WP and by a VCC sense circuit that prevents writes to memory whenever VCC falls below the reset threshold or until VCC reaches the reset threshold during power up.Available packages include an 8-pin DIP and a surface mount, 8-pin SO package.

Features
  • 400 kHz I²C bus compatible
  • 2.7 V to 6.0 V operation
  • Low power CMOS technology
  • 16-Byte page write buffer
  • Built-in inadvertent write protection — VCC lock out — Write protect pin, WP
  • Active high or low reset — Precision power supply voltage monitor — 5V, 3.3V and 3V systems — Five threshold voltage options
  • 1,000,000 Program/Erase cycles
  • Manual Reset
  • 100 Year data retention
  • 8-pin DIP or 8-pin SOIC
  • Commercial and industrial temperature ranges
Applications
  • Industrial control
  • Medical systems
  • Printers
  • Mass storage
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
CPU Supervisor with 16 k EEPROMCAT1162/D (157.0kB)12
Package Drawings (2)
Document TitleDocument ID/SizeRevision
PDIP-8, 300 mils646AA (55.8kB)A
SOIC 8, 150 mils751BD (55.6kB)revo
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
CAT1162LI-25-GActivePb-free Halide freePDIP-8646AANATube50$0.764
CAT1162LI-28-GActivePb-free Halide freePDIP-8646AANATube50$0.764
CAT1162LI-30-GActivePb-free Halide freePDIP-8646AANATube50$0.764
CAT1162LI-42-GActivePb-free Halide freePDIP-8646AANATube50$0.764
CAT1162LI-45-GActivePb-free Halide freePDIP-8646AANATube50$0.764
CAT1162WI-25-GT3ActivePb-free Halide freeSOIC-8751BD1Tape and Reel3000$0.744
CAT1162WI-28-GT3ActivePb-free Halide freeSOIC-8751BD1Tape and Reel3000$0.744
CAT1162WI-30-GT3ActivePb-free Halide freeSOIC-8751BD1Tape and Reel3000$0.744
CAT1162WI-42-GActivePb-free Halide freeSOIC-8751BD1Tube100$0.744
CAT1162WI-42-GT3ActivePb-free Halide freeSOIC-8751BD1Tape and Reel3000$0.744
CAT1162WI-45-GActivePb-free Halide freeSOIC-8751BD1Tube100$0.744
CAT1162WI-45-GT3ActivePb-free Halide freeSOIC-8751BD1Tape and Reel3000$0.744
Specifications
ProductTypeDensityOrganizationData Transmission Standardfcycle Max (kHz)tACC Max nsVCC Min (V)VCC Max (V)Istandby Max (µA)Iact Max (mA)T Min (°C)T Max (°C)
CAT1162LI-25-GSerial16 kb2k x 8I2C40010002.76503-4085
CAT1162LI-28-GSerial16 kb2k x 8I2C40010002.76503-4085
CAT1162LI-30-GSerial16 kb2k x 8I2C40010002.76503-4085
CAT1162LI-42-GSerial16 kb2k x 8I2C40010002.76503-4085
CAT1162LI-45-GSerial16 kb2k x 8I2C40010002.76503-4085
CAT1162WI-25-GT3Serial16 kb2k x 8I2C40010002.76503-4085
CAT1162WI-28-GT3Serial16 kb2k x 8I2C40010002.76503-4085
CAT1162WI-30-GT3Serial16 kb2k x 8I2C40010002.76503-4085
CAT1162WI-42-GSerial16 kb2k x 8I2C40010002.76503-4085
CAT1162WI-42-GT3Serial16 kb2k x 8I2C40010002.76503-4085
CAT1162WI-45-GSerial16 kb2k x 8I2C40010002.76503-4085
CAT1162WI-45-GT3Serial16 kb2k x 8I2C40010002.76503-4085
CPU Supervisor with 16 k EEPROM (157.0kB) CAT1162
PDIP-8, 300 mils CAT93C86B
SOIC 8, 150 mils CAV93C86