RENESAS 4DB0226KB0AVG

DDR4 Registered Clock Driver, Data Buffer and Temp Sensor make up the first complete chipset for DDR4 registered dual in - line memory modules (RDIMMs) and load reduced dual inline memory modules (LRDIMMs). With DDR4 data rates climbing to 3.26 b/s and higher, the advantages of RDIMM and LRDIMM as a speed - scalable memory technology are expected to drive adoption across memory - intensive computing and storage applications. Through flexible I/O control, timing and voltage calibration, and control register programmability, the DDR4 Registered Clock Driver (4RCD023) and Data Buffer (4DB0232) enable faster data rates at higher densities on all JEDEC defined DDR4 LRDIMM and RDIMM topologies. DIMM topology configuration and DRAM information is stored in the Temperature Sensor EEPROM (TSE2004).

• Used in both RDIMM and LRDIMM
• Paired with 4DB0232 for LRDIMM
• 32 - bit 1:2 command/address register
• 1.2V Vdd operation
• Supports up to 4 packages ranks and 8 logical ranks with native 3DS support
• Advanced I/O enable control
• Support at - speed BCOM bus for data buffer control
• Automatic impedance calibration
• New DDR4 power saving protocols
• Command/ Address Parity Checking
• Control register RCW readback
• 1MHz I2C bus
• Paired with 4RCD023 for LRDIMM
• Dual 4 - bit bidirectional data registers with differential data strobes
• BCOM Parity Checking
• Control register BCW readback
• Used in UDIMM, RDIMM, LRDIMM
• Temperature accuracy up to ±0.5℃
• 512 byte EEPROM for vendor info
• All devices are JEDEC compliant and meet stringent requirements for reliability and application compliance
• Up to 35% DDR4 power savings compared to DDR3
• Enables Terabyte DIMM memories
• Parity and CRC for improved data error recovery
• Improved debug and system margining

• enterprise servers
• data centers
• workstations
• storage devices
• communications