DATASHEET X28HC256 FN8108 Rev 5.00 256k, 32k x 8-Bit, 5V, Byte Alterable EEPROM August 27, 2015 The X28HC256 is a second generation high performance Features CMOS 32k x 8 EEPROM. It is fabricated with Intersils Access time: 90ns proprietary, textured poly floating gate technology, providing a highly reliable 5V only nonvolatile memory. Simple byte and page write -Single 5V supply The X28HC256 supports a 128-byte page write operation, effectively providing a 24s/byte write cycle, and enabling the -No external high voltages or V control circuits P-P entire memory to be typically rewritten in less than 0.8s. The -Self timed X28HC256 also features DATA polling and Toggle bit polling, - No erase before write two methods of providing early end of write detection. The - No complex programming algorithms X28HC256 also supports the JEDEC standard software data - No overerase problem protection feature for protecting against inadvertent writes during power-up and power-down. Low power CMOS - Active: 60mA Endurance for the X28HC256 is specified as a minimum 100,000 write cycles per byte and an inherent data retention - Standby: 500A of 100 years. Software data protection - Protects data against system level inadvertent writes High speed page write capability Highly reliable Direct Write cell - Endurance: 100,000 cycles - Data retention: 100 years Early end of write detection -DATA polling - Toggle bit polling RoHS compliant 256k BIT EEPROM X BUFFERS ARRAY LATCHES AND DECODER A TO A 0 14 ADDRESS INPUTS I/O BUFFERS Y BUFFERS AND LATCHES LATCHES AND DECODER I/O TO I/O 0 7 DATA INPUTS/OUTPUTS CE CONTROL OE LOGIC AND TIMING WE V CC V SS FIGURE 1. BLOCK DIAGRAM FN8108 Rev 5.00 Page 1 of 19 August 27, 2015X28HC256 Ordering Information PART NUMBER ACCESS TIME TEMP. RANGE (Note 4)PART MARKING (ns) (C) PACKAGE PKG. DWG. X28HC256JZ-15 (Notes 1, 3) X28HC256J-15 ZHY 150 0 to +70 32 Ld PLCC (RoHS Compliant) N32.45x55 X28HC256JI-15 (Note 1) X28HC256JI-15 HY 150 -40 to +85 32 Ld PLCC N32.45x55 X28HC256JIZ-15 X28HC256JI-15 ZHY 150 -40 to +85 32 Ld PLCC (RoHS Compliant) N32.45x55 (Notes 1, 3) X28HC256PZ-15 X28HC256P-15 HYZ 150 0 to +70 28 Ld PDIP (RoHS Compliant) E28.6 (Notes 2, 3) X28HC256PIZ-15 X28HC256PI-15 HYZ 150 -40 to +85 28 Ld PDIP (RoHS Compliant) E28.6 (Notes 2, 3) X28HC256JZ-12 (Notes 1, 3) X28HC256J-12 ZHY 120 0 to +70 32 Ld PLCC (RoHS Compliant) N32.45x55 X28HC256JI-12 (Note 1) X28HC256JI-12 HY 120 -40 to +85 32 Ld PLCC N32.45x55 X28HC256JIZ-12 X28HC256JI-12 ZHY 120 -40 to +85 32 Ld PLCC (RoHS Compliant) N32.45x55 (Notes 1, 3) X28HC256PZ-12 X28HC256P-12 HYZ 120 0 to +70 28 Ld PDIP (RoHS Compliant) E28.6 (Notes 2, 3) X28HC256PIZ-12 X28HC256PI-12 HYZ 120 -40 to +85 28 Ld PDIP (RoHS Compliant) E28.6 (Notes 2, 3) X28HC256SZ-12 (Note 3) X28HC256S-12 HYZ 120 0 to +70 28 Ld SOIC (300mils RoHS Compliant) MDP0027 X28HC256SI-12 X28HC256SI-12 HY 120 -40 to +85 28 Ld SOIC (300mils) M28.3 X28HC256SIZ-12 (Note 3) X28HC256SI-12 HYZ 120 -40 to +85 28 Ld SOIC (300mils RoHS Compliant) MDP0027 X28HC256JZ-90 (Notes 1, 3) X28HC256J-90 ZHY 90 0 to +70 32 Ld PLCC (RoHS Compliant) N32.45x55 X28HC256JI-90 (Note 1) X28HC256JI-90 HY 90 -40 to +85 32 Ld PLCC N32.45x55 X28HC256JIZ-90 X28HC256JI-90 ZHY 90 -40 to +85 32 Ld PLCC (RoHS Compliant) N32.45x55 (Notes 1, 3) X28HC256PZ-90 X28HC256P-90 HYZ 90 0 to +70 28 Ld PDIP (RoHS Compliant) E28.6 (Notes 2, 3) X28HC256PIZ-90 (Notes 2, 3) X28HC256PI-90 HYZ 90 -40 to +85 28 Ld PDIP (RoHS Compliant) E28.6 X28HC256SI-90 X28HC256SI-90 HY 90 -40 to +85 28 Ld SOIC (300mils) M28.3 X28HC256SIZ-90 (Note 3) X28HC256SI-90 HYZ 90 -40 to +85 28 Ld SOIC (300mils RoHS Compliant) MDP0027 NOTES: 1. Add T* suffix for tape and reel. Please refer to TB347 for details on reel specifications. 2. Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications. 3. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 4. For Moisture Sensitivity Level (MSL), please see product information page for X28HC256. For more information on MSL, please see tech brief TB363. FN8108 Rev 5.00 Page 2 of 19 August 27, 2015