HYS72D64300GBR5C

Attention: Permanent damage to the device may occur if "Absolute Maximum Ratings" are exceeded. This is a stress rating only, and functional operation should be restricted to recommended operation conditions. Exposure to absolute maximum rating conditions for extended periods of time may affect device reliability and exceeding only one of the values may cause irreversible damage to the integrated circuit.

The HYS72D64300GBR5C are low profile versions of the standard Registered DIMM modules suitable for 1U Server Applications. The Low Profile DIMM versions are available as 32 M *72 (256 MB), 64 M *72 (512 MB) and 128 M *72 (1 GB)

The memory array of the HYS72D64300GBR5C is designed with Double Data Rate Synchronous DRAMs for ECC applications. All control and address signals are re-driven on the DIMM using register devices and a PLL for the clock distribution. This reduces capacitive loading to the system bus, but adds one cycle to the SDRAM timing. A variety of decoupling capacitors are mounted on the PC board. The DIMMs feature serial presence detect based on a serial E²PROM device using the 2-pin I²C protocol. The first 128 bytes are programmed with configuration data and the second 128 bytes are available to the customer.