Product Summary

The W972GG8JB25I:J is a 2G bits DDR2 SDRAM. The W972GG8JB25I:J achieves high speed transfer rates up to 1066Mb/sec/pin (DDR2-1066) for general applications. Also it is sorted into the following speed grades: -18, -25, 25I and -3. The -18 is compliant to the DDR2-1066 (7-7-7) specification. The -25/25I are compliant to the DDR2-800 (5-5-5) or DDR2-800 (6-6-6) specification (the 25I industrial grade which is guaranteed to support -40°C ≤ TCASE ≤ 95°C). The -3 is compliant to the DDR2-667 (5-5-5) specification.

Parametrics

W972GG8JB25I:J absolute maximum ratings: (1)Voltage on VDD pin relative to VSS: -1.0 to 2.3 V; (2)Voltage on VDDQ pin relative to VSS: -0.5 to 2.3 V; (3)Voltage on VDDL pin relative to VSS: -0.5 to 2.3 V; (4)Voltage on any pin relative to VSS: -0.5 to 2.3 V; (5)Storage temperature: -55 to +100 °C.

Features

W972GG8JB25I:J features: (1)Power Supply: VDD, VDDQ = 1.8 V +/- 0.1 V; (2)Double Data Rate architecture: two data transfers per clock cycle; (3)CAS Latency: 3, 4, 5, 6 and 7; (4)Burst Length: 4 and 8; (5)Bi-directional, differential data strobes (DQS and DQS ) are transmitted / received with data; (6)Edge-aligned with Read data and center-aligned with Write data; (7)DLL aligns DQ and DQS transitions with clock; (8)Differential clock inputs (CLK and CLK ); (9)Data masks (DM) for write data.; (10)Commands entered on each positive CLK edge, data and data mask are referenced to both edges of DQS; (11)Posted CAS programmable additive latency supported to make command and data bus efficiency; (12)Read Latency = Additive Latency plus CAS Latency (RL = AL + CL); (13)Off-Chip-Driver impedance adjustment (OCD) and On-Die Termination (ODT) for better signal quality; (14)Auto-precharge operation for read and write bursts; (15)Auto Refresh and Self Refresh modes; (16)Precharged Power Down and Active Power Down; (17)Write Data Mask; (18)Write Latency = Read Latency - 1 (WL = RL - 1); (19)Interface: SSTL_18; (20)Packaged in WBGA 60 Ball (11x11.5 mm2), using Lead free materials with RoHS compliant.

Diagrams

W972GG8JB25I:J dimension figure