93AA66A/B/C, 93LC66A/B/C, 93C66A/B/C 4K Microwire Compatible Serial EEPROM Device Selection Table CC Range ORG Pin Word Size Temp Ranges Packages Part Number V 93AA66A 1.8-5.5 No 8-bit I P, SN, ST, MS, OT, MC 93AA66B 1.8-5-5 No 16-bit I P, SN, ST, MS, OT, MC 93LC66A 2.5-5.5 No 8-bit I, E P, SN, ST, MS, OT, MC 93LC66B 2.5-5.5 No 16-bit I, E P, SN, ST, MS, OT, MC 93C66A 4.5-5.5 No 8-bit I, E P, SN, ST, MS, OT, MC 93C66B 4.5-5.5 No 16-bit I, E P, SN, ST, MS, OT, MC 93AA66C 1.8-5.5 Yes 8 or 16-bit I P, SN, ST, MS, MC 93LC66C 2.5-5.5 Yes 8 or 16-bit I, E P, SN, ST, MS, MC 93C66C 4.5-5.5 Yes 8 or 16-bit I, E P, SN, ST, MS, MC Features: Description: Low-power CMOS technology The Microchip Technology Inc. 93XX66A/B/C devices are 4K bit low-voltage serial Electrically Erasable ORG pin to select word size for 66C version PROMs (EEPROM). Word-selectable devices such as 512 x 8-bit organization A ver. devices (no ORG) the 93AA66C, 93LC66C or 93C66C are dependent 256 x 16-bit organization B ver. devices (no upon external logic levels driving the ORG pin to set ORG) word size. For dedicated 8-bit communication, the Self-timed erase/write cycles (including 93XX66A devices are available, while the 93XX66B auto-erase) devices provide dedicated 16-bit communication. Automatic ERAL before WRAL Advanced CMOS technology makes these devices ideal for low-power, nonvolatile memory applications. Power-on/off data protection circuitry The entire 93XX Series is available in standard Industry standard 3-wire serial I/O packages including 8-lead PDIP and SOIC, and Device Status signal (Ready/Busy) advanced packaging including 8-lead MSOP, 6-lead Sequential read function SOT-23, 8-lead 2x3 DFN and 8-lead TSSOP. Pb-free 1,000,000 E/W cycles (Pure Matte Sn) finish is available. Data retention > 200 years Temperature ranges supported: - Industrial (I) -40C to +85C - Automotive (E) -40C to +125C Pin Function Table Name Function CS Chip Select CLK Serial Data Clock DI Serial Data Input DO Serial Data Output VSS Ground NC No internal connection ORG Memory Configuration VCC Power Supply 2005 Microchip Technology Inc. DS21795C-page 193AA66A/B/C, 93LC66A/B/C, 93C66A/B/C Package Types (not to scale) ROTATED SOIC PDIP/SOIC (ex: 93LC46BX) (P, SN) NC 1 8 ORG* CS 1 8 VCC VCC 2 7 VSS CLK 2 7 NC CS 3 6 DO DI 3 6 ORG* CLK 4 5 DI DO 4 5 VSS TSSOP/MSOP SOT-23 (ST, MS) (OT) 1 8 CS VCC 1 6 DO VCC 2 7 CLK NC 2 3 6 5 DI ORG* VSS CS 5 4 DO VSS 3 4 DI CLK DFN CS 1 VCC 8 7 NC CLK 2 6 ORG* DI 3 DO 4 5 VSS * ORG pin is NC on A/B devices DS21795C-page 2 2005 Microchip Technology Inc.