CAT1320: CPU Supervisor with 32 k Serial EEPROM Memory

The CAT1320 is a complete memory and supervisory solution for microcontroller-based systems. A 32 kbit 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 CAT1320 provides a precision VCC sense circuit and drives an open drain output, RESET low whenever VCC falls below the reset threshold voltage.The power supply monitor and reset circuit protect 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 options, interface to microcontrollers and other ICs is simple. In addition, the RESET pin can be used as an input for push-button manual reset capability.The CAT1320 memory features a 64-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, SOIC, TSSOP and 4.9 x 3 mm TDFN.

Features
  • Precision power supply voltage monitor - 5.0 V, 3.3 V and 3.0 V systems - +5.0V (+/- 5%, +/- 10%) - +3.3V (+/- 5%, +/- 10%) - +3.0V (+/- 10%)
  • Active low reset
  • Valid reset guaranteed at VCC=1V
  • 400 kHz I²C bus
  • 3.0 V to 5.5 V operation
  • Low power CMOS technology
  • 64-Byte page write buffer
  • 1,000,000 Program/Erase cycles
  • 100 year data retention
  • 8-pin DIP, SOIC, TSSOP and TDFN packages
  • Industrial temperature range
Applications
  • Industrial control
  • Medical systems
  • Printers
  • Mass storage
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
CPU Supervisor with 32 k EEPROMCAT1320/D (170.0kB)5
Package Drawings (3)
Document TitleDocument ID/SizeRevision
PDIP-8, 300 mils646AA (55.8kB)A
SOIC 8, 150 mils751BD (55.6kB)revo
TSSOP8, 4.4x3948AL (55.7kB)revo
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
CAT1320LI-25-GLifetimePb-free Halide freePDIP-8646AANATube50$0.884
CAT1320LI-28-GLifetimePb-free Halide freePDIP-8646AANATube50$0.884
CAT1320LI-30-GLifetimePb-free Halide freePDIP-8646AANATube50$0.884
CAT1320LI-42-GLifetimePb-free Halide freePDIP-8646AANATube50$0.884
CAT1320LI-45-GLifetimePb-free Halide freePDIP-8646AANATube50$0.884
CAT1320WI-25-GT3ActivePb-free Halide freeSOIC-8751BD1Tape and Reel3000$0.864
CAT1320WI-28-GT3ActivePb-free Halide freeSOIC-8751BD1Tape and Reel3000$0.864
CAT1320WI-30-GT3ActivePb-free Halide freeSOIC-8751BD1Tape and Reel3000$0.864
CAT1320WI-42-GT3ActivePb-free Halide freeSOIC-8751BD1Tape and Reel3000$0.864
CAT1320WI-45-GT3ActivePb-free Halide freeSOIC-8751BD1Tape and Reel3000$0.864
CAT1320YI-25-GT3ActivePb-free Halide freeTSSOP-8948AL1Tape and Reel3000$0.864
CAT1320YI-28-GT3ActivePb-free Halide freeTSSOP-8948AL1Tape and Reel3000$0.864
CAT1320YI-30-GT3ActivePb-free Halide freeTSSOP-8948AL1Tape and Reel3000$0.864
CAT1320YI-42-GT3ActivePb-free Halide freeTSSOP-8948AL1Tape and Reel3000$0.864
CAT1320YI-45-GT3ActivePb-free Halide freeTSSOP-8948AL1Tape and Reel3000$0.864
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)
CAT1320WI-25-GT3Serial32 kb4k x 8I2C400-35.5403-4085
CAT1320WI-28-GT3Serial32 kb4k x 8I2C400-35.5403-4085
CAT1320WI-30-GT3Serial32 kb4k x 8I2C400-35.5403-4085
CAT1320WI-42-GT3Serial32 kb4k x 8I2C400-35.5403-4085
CAT1320WI-45-GT3Serial32 kb4k x 8I2C400-35.5403-4085
CAT1320YI-25-GT3Serial32 kb4k x 8I2C400-35.5403-4085
CAT1320YI-28-GT3Serial32 kb4k x 8I2C400-35.5403-4085
CAT1320YI-30-GT3Serial32 kb4k x 8I2C400-35.5403-4085
CAT1320YI-42-GT3Serial32 kb4k x 8I2C400-35.5403-4085
CAT1320YI-45-GT3Serial32 kb4k x 8I2C400-35.5403-4085
CPU Supervisor with 32 k EEPROM (170.0kB) CAT1320
PDIP-8, 300 mils CAT93C86B
SOIC 8, 150 mils CAV93C86
TSSOP8, 4.4x3 PCA9306