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CAT24C022 Dataheets PDF



Part Number CAT24C022
Manufacturers Catalyst Semiconductor
Logo Catalyst Semiconductor
Description Serial CMOS E2PROM / Precision Reset Controller and Watchdog Timer
Datasheet CAT24C022 DatasheetCAT24C022 Datasheet (PDF)

Advanced CAT24C161/162(16K), CAT24C081/082(8K) CAT24C041/042(4K), CAT24C021/022(2K) Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog Timer FEATURES s Watchdog Timer on SDA for 24CXX1 s Programmable Reset Threshold s 400 KHz I2C Bus Compatible s 2.7 to 6 Volt Operation s Low Power CMOS Technology s 16 - Byte Page Write Buffer s Built-in inadvertent write protection s s s s s Active High or Low Reset Outputs — VCC Lock Out — Precision Power Supply Volta.

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Advanced CAT24C161/162(16K), CAT24C081/082(8K) CAT24C041/042(4K), CAT24C021/022(2K) Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog Timer FEATURES s Watchdog Timer on SDA for 24CXX1 s Programmable Reset Threshold s 400 KHz I2C Bus Compatible s 2.7 to 6 Volt Operation s Low Power CMOS Technology s 16 - Byte Page Write Buffer s Built-in inadvertent write protection s s s s s Active High or Low Reset Outputs — VCC Lock Out — Precision Power Supply Voltage Monitoring — 5V, 3.3V and 3V options 1,000,000 Program/Erase Cycles 100 Year Data Retention 8-Pin DIP or 8-Pin SOIC Commercial, Industrial and Automotive Temperature Ranges DESCRIPTION The CAT24CXXX is a single chip solution to three popular functions of EEPROM memory, precision reset controller and watchdog timer. The 24C161/162(16K), 24C081/082(8K), 24C041/042(4K) and 24C021/022(2K) feature a I2C Serial CMOS EEPROM. Catalyst's advanced CMOS technology substantially reduces device power requirements. The 24CXXX features a 16-byte page and is available in 8-pin DIP or 8-pin SOIC packages. The reset function of the 24CXXX 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. 24CXXX features active low reset on pin 2 and active high reset on pin 7. 24CXX1 features watchdog timer on the SDA line. 24CXX2 does not feature the watchdog timer function. PIN CONFIGURATION 24CXX1/XX2* DC RESET WP VSS VCC RESET SCL SDA BLOCK DIAGRAM EXTERNAL LOAD DOUT ACK VCC VSS WORD ADDRESS BUFFERS COLUMN DECODERS SENSE AMPS SHIFT REGISTERS *All products offered in P and J packages SDA START/STOP LOGIC PIN FUNCTIONS XDEC E2PROM Pin Name SDA RESET/RESET SCL Vcc DC VSS WP Function Serial Data/Address Reset I/O Clock Input Power Supply Do Not Connect Ground Write Protect WP CONTROL LOGIC DATA IN STORAGE HIGH VOLTAGE/ TIMING CONTROL RESET Controller Only for 24C161 WATCHDOG STATE COUNTERS SLAVE ADDRESS COMPARATORS SCL High Precision Vcc Monitor RESET/RESET 24C1601 BLOCK © 1998 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice 1 Doc. No. 25079-00 1/98 M-1 CAT24CXX1/XX2 Advanced ABSOLUTE MAXIMUM RATINGS* Temperature Under Bias....................–55°C to +125°C Storage Temperature........................ –65°C to +150°C Voltage on Any Pin with Respect to Ground(1) ..............–2.0V to +VCC + 2.0V COMMENT Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability. VCC with Respect to Ground..................–2.0V to +7.0V Package Power Dissipation Capability (Ta = 25°C)1.0W.................................1.0W Lead Soldering Temperature (10 secs)...............300°C Output Short Circuit Current(2) ..........................100mA RELIABILITY CHARACTERISTICS Symbol NEND(3) TDR (3) (3) Parameter Endurance Data Retention ESD Susceptibility Latch-up Min. 1,000,000 100 2000 100 Max. Units Cycles/Byte Years Volts mA Reference Test Method MIL-STD-883, Test Method 1033 MIL-STD-883, Test Method 1008 MIL-STD-883, Test Method 3015 JEDEC Standard 17 VZAP ILTH(3)(4) D.C. OPERATING CHARACTERISTICS VCC = +2.7V to +6.0V, unless otherwise specified. Symbol ICC Isb Parameter Power Supply Current Standby Current Min. Limits Typ. Max. 3 40 50 Units mA µA µA µA µA V V V Test Conditions f SCL = 100 KHz Vcc=3.3V Vcc=5 VIN=GND or VCC VIN=GND or VCC ILI ILO VIL VIH VOL Input Leakage Current Output Leakage Current Input Low Voltage Input High Voltage Output Low Voltage (SDA) –1 VCC x 0.7 2 10 VCC x 0.3 VCC + 0.5 0.4 IOL = 3 mA ,VCC=3.0V CAPACITANCE TA = 25°C, f = 1.0 MHz, VCC = 5V Symbol CI/O(3) CIN (3) Test Input/Output Capacitance (SDA) Input Capacitance (SCL) Max. 8 6 Units pF pF Conditions VI/O = 0V VIN = 0V Note: (1) The minimum DC input voltage is –0.5V. During transitions, inputs may undershoot to –2.0V for periods of less than 20 ns. Maximum DC voltage on output pins is VCC +0.5V, which may overshoot to VCC + 2.0V for periods of less than 20ns. (2) Output shorted for no more than one second. No more than one output shorted at a time. (3) This parameter is tested initially and after a design or process change that affects the parameter. (4) Latch-up protection is provided for stresses up to 100 mA on address and data pins from –1V to VCC +1V. Doc. No. 25079-00 1/98 M-1 2 Advanced A.C. CHARACTERISTICS VCC=2.7V to 6.0V unless otherwise specified. Output Load is 1 TTL Gate and 100pF CAT24CXX1/XX2 Read & Write Cycle Limits Symbol Parameter VCC=2.7V - 6V Min. FSCL TI(1) tAA tBUF(1) tHD:STA tLOW tHIGH tSU:STA tHD:DAT tSU:DAT tR (1) VCC.


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