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参数资料
| 型号： | W942504CH-7 |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | DRAM |
| 英文描述： | 64M X 4 DDR DRAM, 0.75 ns, PDSO66 |
| 封装： | 0.400 X 0.875 INCH, 0.65 MM PITCH, TSOP2-66 |
| 文件页数： | 4/45页 |
| 文件大小： | 1261K |
| 代理商： | W942504CH-7 |
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W942504CH
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(8)
VTT is not applied directly to the device. VTT is a system supply for signal termination resistors, is expected to be set
equal to VREF and must track variations in the DC level of VREF.
(9)
These parameters depend on the output loading. Specified values are obtained with the output open.
(10) Transition times are measured between VIH min(AC) and VIL max(AC).Transition (rise and fall) of input signals have a
fixed slope.
(11) IF the result of nominal calculation with regard to tCK contains more than one decimal place, the result is rounded up to
the nearest decimal place.
(i.e., tDQSS = 0.75
× tCK, tCK = 7.5 nS, 0.75 × 7.5 ns = 5.625 ns is rounded up to 5.6 nS.)
(12) VX is the differential clock cross point voltage where input timing measurement is referenced.
(13) VID is magnitude of the difference between CLK input level and CLK input level.
(14) VISO means {VICK(CLK)+VICK( CLK )}/2.
(15) Refer to the figure below.
CLK
VSS
VICK
VX
VICK
VID(AC)
0 V Differential
VISO
VISO(min)
VISO(max)
VSS
(16) tAC and tDQSCK depend on the clock jitter. These timing are measured at stable clock.
相关PDF资料 |
PDF描述 |
|---|---|
| W9864G6IH-6 | 4M X 16 DDR DRAM, 5 ns, PDSO54 |
| WA-1RX33-A4 | SNAP ACTING/LIMIT SWITCH |
| WA-A325CBM | Peripheral Interface |
| WA-A325CPC | Peripheral Interface |
| WA-A325CPI | Peripheral Interface |
相关代理商/技术参数 |
参数描述 |
|---|---|
| W942508BH | 制造商:未知厂家 制造商全称:未知厂家 功能描述:DRAM |
| W942508CH | 制造商:WINBOND 制造商全称:Winbond 功能描述:8M x 4 BANKS x 8 BIT DDR SDRAM |
| W942508CH-5 | 制造商:WINBOND 制造商全称:Winbond 功能描述:8M x 4 BANKS x 8 BIT DDR SDRAM |
| W942508CH-6 | 制造商:WINBOND 制造商全称:Winbond 功能描述:8M x 4 BANKS x 8 BIT DDR SDRAM |
| W942508CH-7 | 制造商:WINBOND 制造商全称:Winbond 功能描述:8M x 4 BANKS x 8 BIT DDR SDRAM |
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