CAT14016 Datasheet | Catalyst Semiconductor

FEATURES - Precision Power Supply Voltage Monitor - 5V, 3.3V, 3V & 2.5V systems - 7 threshold voltage options - Active High or Low Reset - Valid reset guaranteed at VCC = 1 V - Supports Standard and Fast I2C Protocol - 16-Byte Page Write Buffer - Low power CMOS technology - 1,000,000 Program/Erase cycles - 100 year data retention - Industrial temperature range - Ro HS-pliant 8-pin SOIC package For Ordering Information details, see page 14. DESCRIPTION The CAT140xx (see table below) are memory and supervisory solutions for microcontroller based systems. A CMOS serial EEPROM memory and a system power supervisor with brown-out protection are integrated together. Memory interface is via both the standard (100k Hz) as well as fast (400k Hz) I2C protocol. The CAT140xx provides a precision VCC sense circuit with two reset output options: CMOS active low output or CMOS active high. The RESET output is active whenever VCC is below the reset threshold or falls below the reset threshold voltage. The power supply monitor and reset circuit protect system controllers during power up/down and against brownout conditions. Seven reset threshold voltages support 5V, 3.3V, 3V and 2.5V systems. If power supply voltages are out of tolerance reset signals bee active, preventing the system microcontroller, ASIC or peripherals from operating. Reset signals bee inactive typically 240ms after the supply voltage exceeds the reset threshold level. PIN CONFIGURATION SOIC (W) CAT14016 / 08 / 04 / 02 NC / NC / NC / A0 NC / NC / A1 / A1 NC / A2 / A2 / A2 1 2 3 8 7 6 5 VCC RST/RST SCL SDA MEMORY SIZE SELECTOR Product 14002 14004 14008 14016 Memory density 2-Kbit 4-Kbit 8-Kbit 16-Kbit VSS 4 PIN FUNCTION Pin Name A0, A1, A2 SDA SCL ¯¯¯¯ RST/RST VCC VSS NC Function Device Address Inputs Serial Data Input/Output Serial Clock Input Reset Output Power Supply Ground No Connect THRESHOLD SUFFIX SELECTOR Nominal Threshold Voltage 4.63V 4.38V 4.00V 3.08V 2.93V 2.63V 2.32V Threshold Suffix Designation L M...