24LCS52ST Microchip

24XX52 24AA52/24LCS52 2 2K 2.2V I C Serial EEPROM with Software Write-Protect Features Description Single supply with operation down to 1.8V The Microchip Technology Inc. 24AA52/24LCS52 (24XX52*) is a 2Kbit Electrically Erasable PROM Low-power CMOS technology capable of operation across a broad voltage range - 1 mA active current typical (1.8V to 5.5V). This device has a software write-protect -1 A standby current typical (I-temp) feature for the lower half of the array, as well as an Organized as 1 block of 256 bytes (256 x 8) external pin that can be used to write-protect the entire Software write protection for lower 128 bytes array. The software write-protect feature is enabled by Hardware write protection for entire array sending the device a special command. Once this 2 feature has been enabled, it cannot be reversed. In 2-wire serial interface bus, I C compatible addition to the software protect feature, there is a WP Schmitt Trigger inputs for noise suppression pin that can be used to write-protect the entire array, Output slope control to eliminate ground bounce regardless of whether the software write-protect 100 kHz (24AA52) and 400 kHz (24LCS52) register has been written or not. This allows the system compatibility designer to protect none, half or all of the array, Self-timed write cycle (including auto-erase) depending on the application. The device is organized as one block of 256 x 8-bit memory with a 2-wire serial Page write buffer for up to 16 bytes interface. Low voltage design permits operation down 3.5 ms typical write cycle time for page write to 1.8V, with standby and active currents of only 1 A ESD protection > 4,000V and 1 mA respectively. The 24XX52 also has a page 1,000,000 erase/write cycles write capability for up to 16 bytes of data. The 24XX52 Data retention > 200 years is available in the standard 8-pin PDIP, surface mount SOIC, TSSOP and MSOP packages. 8-lead PDIP, SOIC, TSSOP and MSOP package Standard and Pb-free finishes available Block Diagram Available for extended temperature ranges: - Industrial (I): -40C to +85C WP A0 A1 A2 HV Generator Device Selection Table Software write I/O Memory protected area Control Control Part VCC Max Clock Temp (00h-7Fh) Logic Logic XDEC Number Range Frequency Ranges (1) Standard 24AA52 1.8-5.5 400 kHz I Array SDA SCL 24LCS52 2.2-5.5 400 kHz I Note 1: 100 kHz for VCC <2.5V VCC Write-Protect Circuitry VSS YDEC Package Types PDIP/SOIC/TSSOP/MSOP Sense Amp. R/W Control A0 1 8 VCC A1 2 7 WP A2 3 6 SCL VSS 4 5 SDA *24XX52 is used in this document as a generic part number for the 24AA52/24LCS52 devices. 2003 Microchip Technology Inc. DS21166G-page 124AA52/24LCS52 1.0 ELECTRICAL CHARACTERISTICS () Absolute Maximum Ratings VCC.............................................................................................................................................................................6.5V All inputs and outputs w.r.t. VSS ......................................................................................................... -0.3V to VCC +1.0V Storage temperature ...............................................................................................................................-65C to +150C Ambient temperature with power applied................................................................................................-40C to +125C ESD protection on all pins ...................................................................................................................................................... 4kV NOTICE: Stresses above those listed underAbsolute Maximum Rating may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. TABLE 1-1: DC SPECIFICATIONS VCC = +1.8V to +5.5V DC CHARACTERISTICS Industrial (I): TA = -40C to +85C Param. Symbol Characteristic Min Typ Max Units Conditions No. D1 VIH A0, A1, A2, SCL, SDA and WP pins D2 High-level input voltage 0.7 VCC V D3 VIL Low-level input voltage 0.3 VCC V 0.2 VCC for VCC < 2.5V D4 VHYS Hysteresis of Schmitt 0.05 VCC V (Note) Trigger inputs D5 VOL Low-level output voltage 0.40 V IOL = 3.0 mA, VCC = 2.5V D6 ILI Input leakage current 1 mA VIN = 0.1V to VCC D7 ILO Output leakage current 1 AVOUT = 0.1V to VCC D8 CIN, Pin capacitance 10 pFVCC = 5.0V (Note) COUT (all inputs/outputs) TA = 25C, FCLK = 1 MHz D9 ICC write Operating current 1.0 3.0 mA VCC = 5.5V, SCL = 400 kHz D10 ICC read 0.20 1.0 mA D11 ICCS Standby current 0.36 1.0 A Industrial SDA = SCL = VCC A0, A1, A2, WP = VSS Note: This parameter is periodically sampled and not 100% tested. DS21166G-page 2 2003 Microchip Technology Inc.