CAT13004 Datasheet | Catalyst Semiconductor

.. CAT130xx Voltage Supervisor with Microwire 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 = 1 V - High Speed Operation - Selectable x8 or x16 memory organization - 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 13. DESCRIPTION The CAT130xx (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 Microwire serial protocol. The CAT130xx 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) CS SK DI DO 1 2 3 4 8 VCC ¯¯¯¯ 7 RST/ RST 6 ORG 5 GND MEMORY SIZE SELECTOR Product 13001 13004 13008 13016 Memory density 1-Kbit 4-Kbit 8-Kbit 16-Kbit PIN FUNCTION Pin Name CS SK DI DO GND ORG ¯¯¯¯ RST/ RST VCC Function Chip Select Clock Input Serial Data Input Serial Data Output Ground Memory Organization Reset Output Power Supply 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 J T S R...