34AA02-E/ST Microchip

34AA02/34LC02 2 2K I C Serial EEPROM Software Write-Protect Features: Package Types PDIP/SOIC/TSSOP/MSOP/TDFN Permanent and Resettable Software Write-Protect for Lower Half of the Array (00h-7Fh) A0 1 8 VCC A0 1 VCC 8 Single Supply with Operation Down to 1.7V A1 2 7 WP 7 WP A1 2 Low-Power CMOS Technology: 6 SCL A2 3 A2 3 6 SCL - Read current 1 mA, typical VSS 4 5 SDA - Standby current, 100 nA, typical VSS 4 5 SDA 2 2-Wire Serial Interface Bus, I C Compatible SOT-23 Cascadable up to Eight Devices Schmitt Trigger Inputs for Noise Suppression SCL 1 6 VCC Output Slope Control to Eliminate Ground Bounce VSS 2 5 A0 100 kHz and 400 kHz Compatibility SDA 3 4 A1 1 MHz Clock for LC Versions Page Write Time 3 ms, typical Self-Timed Erase/Write Cycle Description: 16-Byte Page Write Buffer The Microchip Technology Inc. 34AA02/34LC02 ESD Protection > 4,000V (34XX02*) is a 2Kbit Electrically Erasable PROM Software Write Protection for Lower 128 Bytes capable of operation across a broad voltage range Hardware Write Protection for Entire Array (1.7V to 5.5V). This device has two software write- More than 1 Million Erase/Write Cycles protect features for the lower half of the array, as well as an external pin that can be used to write-protect the Data Retention > 200 Years entire array. This allows the system designer to protect 8-Lead PDIP, SOIC, TSSOP, MSOP and TDFN none, half, or all of the array, depending on the packages application. The device is organized as one block of 6-Lead SOT-23 Package 256 x 8-bit memory with a 2-wire serial interface. Low- Pb-free and RoHS Compliant voltage design permits operation down to 1.7V, with Available for Extended Temperature Ranges: standby and active currents of only 100 nA and 1 mA, respectively. The 34XX02 also has a page write - Industrial (I): -40C to +85C capability for up to 16 bytes of data. The 34XX02 is - Automotive (E): -40C to +125C available in the standard 8-pin PDIP, surface mount SOIC, TSSOP, MSOP and TDFN packages. The Device Selection Table 34XX02 is also available in the 6-lead, SOT-23 CC Max. Clock Temp Part V package. Number Range Frequency Ranges (1) 34AA02 1.7-5.5 400 kHz I,E 34LC02 2.2-5.5 1 MHz I,E Note 1: 100 kHz for VCC <1.8V *34XX02 is used in this document as a generic part number for the 34AA02/34LC02 devices. 2008 Microchip Technology Inc. DS22029D-page 134AA02/34LC02 Block Diagram WP A0 A1 A2 HV Generator Software write- I/O Memory protected area Control Control (00h-7Fh) Logic Logic XDEC Standard Array SDA SCL VCC Write-Protect Circuitry VSS YDEC Sense Amp. R/W Control DS22029D-page 2 2008 Microchip Technology Inc.