![](/images/new-backgrounds/1204826/20482637x1.webp)
Unbuffered DIMM
datasheet
Rev. 1.0
DDR3L SDRAM
11.4 Slew Rate Definition for Single Ended Input Signals
See "Address / Command Setup, Hold and Derating" for
11.5 Slew rate definition for Differential Input Signals
Input slew rate for differential signals (CK, CK and DQS, DQS) are defined and measured as shown in below.
[ Table 9 ] Differential input slew rate definition
Description | Measured |
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From |
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| VILdiffmax |
| VIHdiffmin |
| VIHdiffmin - VILdiffmax |
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Differential input slew rate for rising edge |
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| Delta TRdiff | ||||||||||||||||
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| VIHdiffmin |
| VILdiffmax |
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Differential input slew rate for falling edge |
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| Delta TFdiff | ||||||||||||||||
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NOTE : The differential signal (i.e. CK - |
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CK | DQS) |
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| VIHdiffmin |
| 0 |
| VILdiffmax |
delta TFdiff | delta TRdiff |
Figure 6. Differential input slew rate definition for DQS, DQS and CK, CK
12. AC & DC Output Measurement Levels
12.1 Single Ended AC and DC Output Levels
[ Table 10 ] Single Ended AC and DC output levels
Symbol | Parameter | Units | NOTE | |
VOH(DC) | DC output high measurement level (for IV curve linearity) | 0.8 x VDDQ | V |
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VOM(DC) | DC output mid measurement level (for IV curve linearity) | 0.5 x VDDQ | V |
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VOL(DC) | DC output low measurement level (for IV curve linearity) | 0.2 x VDDQ | V |
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VOH(AC) | AC output high measurement level (for output SR) | VTT + 0.1 x VDDQ | V | 1 |
VOL(AC) | AC output low measurement level (for output SR) | VTT - 0.1 x VDDQ | V | 1 |
NOTE : 1. The swing of
12.2 Differential AC and DC Output Levels
[ Table 11 ] Differential AC and DC output levels
Symbol | Parameter | Units | NOTE | |
VOHdiff(AC) | AC differential output high measurement level (for output SR) | +0.2 x VDDQ | V | 1 |
VOLdiff(AC) | AC differential output low measurement level (for output SR) | V | 1 |
NOTE : 1. The swing of
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