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CAT93C6634 Datasheet(PDF) 1 Page - Catalyst Semiconductor |
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CAT93C6634 Datasheet(HTML) 1 Page - Catalyst Semiconductor |
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1 / 10 page  9-85 CAT93CXXXX (1K-16K) Supervisory Circuits with Microwire Serial CMOS E2PROM, Precision Reset Controller and Watchdog Timer DESCRIPTION The CAT93CXXXX is a single chip solution to three popular functions of EEPROM memory, precision reset controller and watchdog timer. The serial EEPROM memory of the 93CXXXX can be configured either by 16- bits or by 8-bits. Each register can be written (or read) by using the DI (or DO pin). The reset function of the 93CXXXX protects the system during brown out and power up/down conditions. During system failure the watchdog timer feature protects the microcontroller with a reset signal. Catalyst's advanced CMOS technology substantially reduces device power requirements. The 93CXXXX is available in 8-pin DIP, 8- pin TSSOP or 8-pin SOIC packages. It is designed to endure 1,000,000 program/erase cycles and has a data retention of 100 years. PIN CONFIGURATION BLOCK DIAGRAM PIN FUNCTIONS Pin Name Function CS Chip Select RESET/ RESET Reset I/O SK Clock Input DI Serial Data Input DO Serial Data Output VCC +2.7 to 6.0V Power Supply GND Ground ORG Memory Organization Note: When the ORG pin is connected to VCC, the X16 organiza tion is selected. When it is connected to ground, the X8 pin is selected. If the ORG pin is left unconnected, then an internal pullup device will select the X16 organization. 93CX61X 93CX62X 93CX63X FEATURES s Watchdog Timer s Programmable Reset Threshold s Built-in Inadvertent Write Protection —V CC Lock Out s High Speed Operation: 3MHz s Low Power CMOS Technology s x 16 or x 8 Selectable Serial Memory s Self-Timed Write Cycle with Auto-Clear s Sequential Read s Fast Nonvolatile Write Cycle: 3ms Max s Active High or Low Reset Outputs —Precision Power Supply Voltage Monitoring —5V, 3.3V and 3V options s Hardware and Software Write Protection s Power-Up Inadvertant Write Protection s 1,000,000 Program/Erase Cycles s 100 Year Data Retention s Commercial, Industrial, and Automotive Temperature Ranges s 2.7-6.0 Volt Operation s 16 Byte Page Mode Advanced Information CS SK DI DO VCC RESET( RESET) ORG GND 1 2 3 4 8 7 6 5 CS SK DI DO VCC WDI GND 1 2 3 4 8 7 6 5 RESET( RESET) CS SK DI DO VCC RESET GND 1 2 3 4 8 7 6 5 RESET VCC ADDRESS DECODER MEMORY ARRAY DATA REGISTER MODE DECODE LOGIC CLOCK GENERATOR OUTPUT BUFFER DO SK CS DI ORG GND RESET Controller High Precision Vcc Monitor WDI RESET/ RESET WATCHDOG © 1998 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice |
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