Winbond Electronics Corporation W971GG8JB
The W971GG8JB is a 1G bits DDR2 SDRAM, organized as 16,777,216 words 8 banks 8 bits. This device achieves high speed transfer rates up to 1066Mb/sec/pin (DDR2-1066) for general applications. W971GG8JB is sorted into the following speed grades: -18, -25, 25I, 25A, 25K and -3.
| Part No. |
W971GG8JB |
| Datasheet |
W971GG8JB
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| Manufacturer |
 Winbond Electronics Corporation |
| Description |
16M x 8 BANKS x 8 BIT DDR2 SDRAM |
| Buy |
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GENERAL DESCRIPTION
The W971GG8JB is a 1G bits DDR2 SDRAM, organized as 16,777,216 words 8 banks 8 bits. The -18 is compliant to the DDR2-1066 (6-6-6) specification. The -25/25I are compliant to the DDR2800 (5-5-5) 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. The automotive grade parts temperature, if offered, has two simultaneous requirements: ambient temperature (TA) surrounding the device cannot be less than -40°C or greater than +95°C (for 25A), +105°C (for 25K), and the case temperature (TCASE) cannot be less than -40°C or greater than +95°C (for 25A), +105°C (for 25K). JEDEC specifications require the refresh rate to double when TCASE exceeds +85°C; this also requires use of the high-temperature self refresh option. Additionally, ODT resistance and the input/output impedance must be derated when TCASE is < 0°C or > +85°C. All of the control and address inputs are synchronized with a pair of externally supplied di fferential clocks.
