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EDE1116ABSE-6E-E Datasheet(PDF) 21 Page - Elpida Memory |
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EDE1116ABSE-6E-E Datasheet(HTML) 21 Page - Elpida Memory |
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21 / 82 page  EDE1104ABSE, EDE1108ABSE, EDE1116ABSE Data Sheet E0852E50 (Ver. 5.0) 21 Clock Jitter [DDR2-800, 667] -8E -6C, -6E Frequency (Mbps) 800 667 Parameter Symbol min. max. min. max. Unit Notes Average clock period tCK (avg) 2500 8000 3000 8000 ps 1 Clock period jitter tJIT (per) −100 100 −125 125 ps 5 Clock period jitter during DLL locking period tJIT (per, lck) −80 80 −100 100 ps 5 Cycle to cycle period jitter tJIT (cc) ⎯ 200 ⎯ 250 ps 6 Cycle to cycle clock period jitter during DLL locking period tJIT (cc, lck) ⎯ 160 ⎯ 200 ps 6 Cumulative error across 2 cycles tERR (2per) −150 150 −175 175 ps 7 Cumulative error across 3 cycles tERR (3per) −175 175 −225 225 ps 7 Cumulative error across 4 cycles tERR (4per) −200 200 −250 250 ps 7 Cumulative error across 5 cycles tERR (5per) −200 200 −250 250 ps 7 Cumulative error across n=6,7,8,9,10 cycles tERR (6-10per) −300 300 −350 350 ps 7 Cumulative error across n=11, 12,…49,50 cycles tERR (11-50per) −450 450 −450 450 ps 7 Average high pulse width tCH (avg) 0.48 0.52 0.48 0.52 tCK (avg) 2 Average low pulse width tCL (avg) 0.48 0.52 0.48 0.52 tCK (avg) 3 Duty cycle jitter tJIT (duty) −100 100 −125 125 ps 4 Notes: 1. tCK (avg) is calculated as the average clock period across any consecutive 200cycle window. N tCKj avg tCK N j ⎭ ⎬ ⎫ ⎩ ⎨ ⎧ = ∑ =1 ) ( N = 200 2. tCH (avg) is defined as the average high pulse width, as calculated across any consecutive 200 high pulses. )) ( ( ) ( 1 avg tCK N tCHj avg tCH N j × ⎭ ⎬ ⎫ ⎩ ⎨ ⎧ = ∑ = N = 200 3. tCL (avg) is defined as the average low pulse width, as calculated across any consecutive 200 low pulses. )) ( ( ) ( 1 avg tCK N tCLj avg tCL N j × ⎭ ⎬ ⎫ ⎩ ⎨ ⎧ = ∑ = N = 200 4. tJIT (duty) is defined as the cumulative set of tCH jitter and tCL jitter. tCH jitter is the largest deviation of any single tCH from tCH (avg). tCL jitter is the largest deviation of any single tCL from tCL (avg). tJIT (duty) is not subject to production test. tJIT (duty) = Min./Max. of {tJIT (CH), tJIT (CL)}, where: tJIT (CH) = {tCHj- tCH (avg) where j = 1 to 200} tJIT (CL) = {tCLj − tCL (avg) where j = 1 to 200} 5. tJIT (per) is defined as the largest deviation of any single tCK from tCK (avg). tJIT (per) = Min./Max. of { tCKj − tCK (avg) where j = 1 to 200} tJIT (per) defines the single period jitter when the DLL is already locked. tJIT (per, lck) uses the same definition for single period jitter, during the DLL locking period only. tJIT (per) and tJIT (per, lck) are not subject to production test. 6. tJIT (cc) is defined as the absolute difference in clock period between two consecutive clock cycles: |
Similar Part No. - EDE1116ABSE-6E-E |
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Similar Description - EDE1116ABSE-6E-E |
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