CAT1027: CPU Supervisor with 2 k EEPROM Memory

Description: The CAT1027 is a complete memory and supervisory s...
  • The CAT1027 is a complete memory and supervisory solution for microcontroller-based systems. A 2 k-bit serial EEPROM memory and a system power supervisor with brown-out protection are integrated together in low power CMOS technology. Memory interface is via a 400 kHz I²C bus.
    The CAT1027 provides a precision VCC sense circuit with five reset threshold voltage options that support 5.0 V, 3.3 V and 3.0 V systems. The power supply monitor and reset circuit protects memory and systems controllers during power up/down and against brownout conditions. If power supply voltages are out of tolerance reset signals become active preventing the system microcontroller, ASIC, or peripherals from operating.
    CAT1027 has only a RESET output. In addition, the RESET pin can be used as an input for push-button manual reset capability.
    The CAT1027 provides an auxiliary voltage sensor input, VSENSE, which is used to monitor a second system supply. The auxiliary high impedance comparator drives the open drain output, VLOW, whenever the sense voltage is below 1.25 V threshold.
    The CAT1027 is designed with a 1.6 second watchdog timer circuit that resets a system to a known state if software or a hardware glitch halts or 'hangs' the system. The CAT1027 features a watchdog timer interrupt input, WDI.
    The on-chip 2 k-bit EEPROM memory features a 16-byte page. In addition, hardware data protection is provided 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, 8-pin SOIC, 8-pin TSSOP, 8-pin TDFN and 8-pin MSOP. The TDFN package thickness is 0.8 mm maximum. TDFN footprint is 3x3 mm.
  • Features
  • Precision VCC power supply voltage supervisor
    5.0 V, 3.3 V and 3.0 V systems
    Five threshold voltage options
  • Additional voltage monitoring
    — Externally adjustable down to 1.25 V
  • Watchdog timer
  • Active high or low reset
    — Valid reset guaranteed to VCC = 1 V
  • 400 kHz I²C bus
  • 3.0 V to 5.5 V operation
  • Low power CMOS technology
  • 16-Byte page write buffer
  • Built-in inadvertent write protection
  • 1,000,000 Program/Erase cycles
  • Manual reset capability
  • 100 year data retention
  • 8-pin DIP, SOIC, TSSOP, MSOP or TDFN
    (3 x 3 mm foot-print) packages
    — TDFN max height is 0.8mm
  • Industrial and extended temperature ranges
  • Applications
  • Industrial control
  • Medical systems
  • Printers
  • Mass storage
  • Technical Documentation & Design Resources
    Product Change Notification
    Availability and Samples
    CAT1027LI-25-G
  • Status: Last Shipments
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: PDIP-8
  • Package Case Outline: 646AA
  • MSL: NA
  • Container Type: TUBE
  • Container Qty: 50
  • CAT1027LI-28-G
  • Status: Last Shipments
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: PDIP-8
  • Package Case Outline: 646AA
  • MSL: NA
  • Container Type: TUBE
  • Container Qty: 50
  • CAT1027LI-30-G
  • Status: Last Shipments
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: PDIP-8
  • Package Case Outline: 646AA
  • MSL: NA
  • Container Type: TUBE
  • Container Qty: 50
  • CAT1027LI-42-G
  • Status: Last Shipments
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: PDIP-8
  • Package Case Outline: 646AA
  • MSL: NA
  • Container Type: TUBE
  • Container Qty: 50
  • CAT1027LI-45-G
  • Status: Last Shipments
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: PDIP-8
  • Package Case Outline: 646AA
  • MSL: NA
  • Container Type: TUBE
  • Container Qty: 50
  • CAT1027WI-25-GT3
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: SOIC-8
  • Package Case Outline: 751BD
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027WI-28-G
  • Status: Obsolete
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: SOIC-8
  • Package Case Outline: 751BD
  • MSL: 1
  • Container Type: TUBE
  • Container Qty: 100
  • CAT1027WI-28-GT3
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: SOIC-8
  • Package Case Outline: 751BD
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Inventory

  • Market Leadtime (weeks):4 to 8
  • Arrow:0
  • ON Semiconductor:3,000
  • CAT1027WI-30-GT3
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: SOIC-8
  • Package Case Outline: 751BD
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027WI-42-GT3
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: SOIC-8
  • Package Case Outline: 751BD
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027WI-45-G
  • Status: Obsolete
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: SOIC-8
  • Package Case Outline: 751BD
  • MSL: 1
  • Container Type: TUBE
  • Container Qty: 100
  • CAT1027WI-45-GT3
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: SOIC-8
  • Package Case Outline: 751BD
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Inventory

  • Market Leadtime (weeks):4 to 8
  • Arrow:0
  • ON Semiconductor:6,000
  • CAT1027YI-25-GT3
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: TSSOP-8
  • Package Case Outline: 948AL
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027YI-28-GT3
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: TSSOP-8
  • Package Case Outline: 948AL
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027YI-30-GT3
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: TSSOP-8
  • Package Case Outline: 948AL
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027YI-42-GT3
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: TSSOP-8
  • Package Case Outline: 948AL
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027YI-45-GT3
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: TSSOP-8
  • Package Case Outline: 948AL
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027ZD4I-25T3
  • Status: Consult Sales Office
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: TDFN-8
  • Package Case Outline: 511AL
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027ZD4I-28T3
  • Status: Consult Sales Office
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: TDFN-8
  • Package Case Outline: 511AL
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027ZD4I-30T3
  • Status: Consult Sales Office
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: TDFN-8
  • Package Case Outline: 511AL
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027ZD4I-42T3
  • Status: Consult Sales Office
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: TDFN-8
  • Package Case Outline: 511AL
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027ZD4I-45T3
  • Status: Consult Sales Office
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: TDFN-8
  • Package Case Outline: 511AL
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027ZI-25-GT3
  • Status: Lifetime
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: MSOP-8
  • Package Case Outline: 846AD
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027ZI-28-GT3
  • Status: Lifetime
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: MSOP-8
  • Package Case Outline: 846AD
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027ZI-30-GT3
  • Status: Lifetime
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: MSOP-8
  • Package Case Outline: 846AD
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027ZI-42-GT3
  • Status: Lifetime
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: MSOP-8
  • Package Case Outline: 846AD
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • CAT1027ZI-45-GT3
  • Status: Lifetime
  • Compliance: Pb-free Halide free 
  • Description: CPU Supervisor with 2 k EEPROM Memory
  • Package Type: MSOP-8
  • Package Case Outline: 846AD
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Specifications
  • Type: Serial 
  • Density: 2 kb 
  • Organization: 256 x 8 
  • Data Transmission Standard: I2C 
  • fcycle Max (kHz): 400 
  • tACC Max ns: 900 
  • VCC Min (V): 2.7 
  • VCC Max (V): 5.5 
  • Istandby Max (µA): 60 
  • Iact Max (mA):
  • T Min (°C): -40 
  • T Max (°C): 85 
  • Package Type: SOIC-8  TSSOP-8 
  • ON Semiconductor Full Web Site