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CAT15004 Datasheet(PDF) 1 Page - ON Semiconductor |
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CAT15004 Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 15 page CAT15002, CAT15004 © 2008 SCILLC. All rights reserved. 1 Doc. No. MD-1126 Rev. B Characteristics subject to change without notice Voltage Supervisor with 2-Kb and 4-Kb SPI Serial CMOS EEPROM 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 = 1V 10MHz SPI compatible 16-byte page write buffer Low power CMOS technology 1,000,000 Program/Erase cycles 100 year data retention Industrial temperature range RoHS-compliant 8-pin SOIC package For Ordering Information details, see page 14. PIN CONFIGURATION SOIC (W) CS ¯¯ 1 8 VCC SO 2 7 RST/ RST ¯¯¯¯ WP ¯¯¯ 3 6 SCK VSS 4 5 SI DESCRIPTION The CAT15002/04 (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 SPI bus serial interface. The CAT15002/04 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 become active, preventing the system microcontroller, ASIC or peripherals from operating. Reset signals become inactive typically 240ms after the supply voltage exceeds the reset threshold level. MEMORY SIZE SELECTOR Product Memory density 15002 2-Kbit 15004 4-Kbit PIN FUNCTION Pin Name Function CS ¯¯ Chip Select SO Serial Data Output WP ¯¯¯ Write Protect VSS Ground SI Serial Data Input SCK Serial Clock Input RST/ RST ¯¯¯¯ Reset Output VCC Power Supply THRESHOLD SUFFIX SELECTOR Nominal Threshold Voltage Threshold Suffix Designation 4.63V L 4.38V M 4.00V J 3.08V T 2.93V S 2.63V R 2.32V Z |
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