AT93C56A_AUTOMOTIVE(汽车用串行存贮芯片资料ATMEL).pdfVIP

Features • Medium-voltage and Standard-voltage Operation – 5.0(VCC = 4.5V to 5.5V) – 2.7 (VCC = 2.7V to 5.5V) • Automotive Temperature Range –40°C to 125°C • User-selectable Internal Organization – 2K: 256 x 8 or 128 x 16 – 4K: 512 x 8 or 256 x 16 • Three-wire Serial Interface • Sequential Read Operation • 2 MHz Clock Rate (5V) Three-wire • Self-timed Write Cycle (10 ms max) • High Reliability Automotive – Endurance: 1 Million Write Cycles – Data Retention: 100 Years Serial • Lead-free/Halogen-free Devices Available • 8-lead JEDEC SOIC and 8-lead TSSOP Packages EEPROMs Description 2K (256 x 8 or 128 x 16) The AT93C56A/66A provides 2048/4096 bits of serial electrically-erasable program- 4K (512 x 8 or 256 x 16) mable read-only memory (EEPROM). The EEPROM is organized as 128/256 words of 16 bits each when the ORG pin is connected to VCC and 256/512 words of 8 bits each when it is tied to ground. The device is optimized for use in many automotive applica- tions where low-power and low-voltage operations are essential. The AT93C56A/66A AT93C56A is available in space-saving 8-lead JEDEC SOIC and 8-lead TSSOP packages. AT93C66A The AT93C56A/66A is enabled through the Chip Select (CS) pin and accessed via a three-wire serial interface consisting of Data Input (DI), Data Output (DO), and Shift Clock (SK). Upon receiving a Read instruction at DI, the address is decoded and the data is clocked out serial