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/Winbond W971GG6NB-25 VFBGA-84 SDRAM FLASH

Winbond W971GG6NB-25 VFBGA-84 SDRAM FLASH

The W971GG6NB is a 1G bits DDR2 SDRAM, organized as 8,388,608 words  8 banks  16 bits. This  device achieves high speed transfer rates up to 1066 Mbps (DDR2-1066) for various applications.

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    Winbond
  • Product Details

GENERAL DESCRIPTION  

The W971GG6NB is a 1G bits DDR2 SDRAM, organized as 8,388,608 words  8 banks  16 bits. This  device achieves high speed transfer rates up to 1066 Mbps (DDR2-1066) for various applications.  W971GG6NB is sorted into the following grade parts: -18, 18I, 18J, -25, 25I, 25J and -3.  

The -18, 18I and 18J grade parts are compliant to the DDR2-1066 (6-6-6) specification (The 18I  industrial grade which is guaranteed to support -40°C ≤ TCASE ≤ 95°C, the 18J industrial plus grade  which is guaranteed to support -40°C ≤ TCASE ≤ 105°C).  

The -25, 25I and 25J grade parts 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 25J  industrial plus grade which is guaranteed to support -40°C ≤ TCASE ≤ 105°C).  

The -3 grade parts is compliant to the DDR2-667 (5-5-5) specification.  

All of the control and address inputs are synchronized with a pair of externally supplied differential  clocks. Inputs are latched at the cross point of differential clocks (CLK rising and  CLK  falling). All  I/Os are synchronized with a single ended DQS or differential DQS- DQS  pair in a source  synchronous fashion.


FEATURES  

 Power Supply: VDD, VDDQ = 1.8 V ± 0.1 V  

 Double Data Rate architecture: two data transfers per clock cycle  

 CAS Latency: 3, 4, 5, 6 and 7  

 Burst Length: 4 and 8  

 Bi-directional, differential data strobes (DQS and  DQS  ) are transmitted / received with data   Edge-aligned with Read data and center-aligned with Write data  

 DLL aligns DQ and DQS transitions with clock  

 Differential clock inputs (CLK and  CLK  )  

 Data masks (DM) for write data  

 Commands entered on each positive CLK edge, data and data mask are referenced to both edges  of DQS   Posted  CAS  programmable additive latency supported to make command and data bus efficiency  

 Read Latency = Additive Latency plus CAS Latency (RL = AL + CL)  

 Off-Chip-Driver impedance adjustment (OCD) and On-Die-Termination (ODT) for better signal  quality  

 Auto-precharge operation for read and write bursts  

 Auto Refresh and Self Refresh modes  

 Precharged Power Down and Active Power Down  

 Write Data Mask  

 Write Latency = Read Latency - 1 (WL = RL - 1)  

 Interface: SSTL_18  

 Packaged in VFBGA 84 Ball (8x12.5 mm2 with thickness of 1.0 mm) - (Window BGA Type), using  Lead free materials with RoHS compliant

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