參數(shù)資料
型號(hào)： K4H560438E-GCA2
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： DIODE ZENER SINGLE 300mW 19.7Vz 10mA-Izt 0.0251 0.05uA-Ir 15 SOT-23 3K/REEL
中文描述： 256Mb的電子芯片DDR SDRAM內(nèi)存規(guī)格60Ball FBGA封裝（x4/x8）
文件頁(yè)數(shù)： 25/26頁(yè)
文件大?。?/td> 291K
代理商： K4H560438E-GCA2
- 25 -
DDR SDRAM
Rev. 2.2 Mar. ’03
K4H561638D
8. I/O Setup/Hold Plateau Derating
I/O Input Level
This derating table is used to increase tDS/tDH in the case where the input level is flat below VREF
±
310mV for a duration of
up to 2ns.
9. I/O Delta Rise/Fall Rate(1/slew-rate) Derating
tDS
tDH
(ns/V)
(ps)
(ps)
This derating table is used to increase t
DS
/t
DH
in the case where the DQ and DQS slew rates differ. The Delta Rise/Fall Rate
is calated as 1/SlewRate1-1/SlewRate2. For example, if slew rate 1 = 5V/ns and slew rate 2 =.4V/ns then the Delta Rise/Fall
Rate =-0/5ns/V. Input S/H slew rate based on larger of AC-AC delta rise/fall rate and DC-DC delta rise/fall rate.
10. This parameter is fir system simulation purpose. It is guranteed by design.
11. For each of the terms, if not already an integer, round to the next highest integer. tCK is actual to the system clock cycle time.
tDS
tDH
(mV)
±
280
(ps)
+50
(ps)
+50
Delta Rise/Fall Rate
0
0
0
±
0.25
±
0.5
+50
+50
+100
+100
The following table specifies derating values for the specifications listed if the single-ended clock skew rate is less than 1.0V/ns.
tIH/tIS
(ps)
(ps)
1.0V/ns
0
0
CK slew rate
(Single ended)
tDSS/tDSH
tAC/tDQSCK
(ps)
0
tLZ(min)
(ps)
0
tHZ(max)
(ps)
0
0.75V/ns
0.5V/ns
+50
+100
+50
+100
+50
+100
-50
-100
+50
+100
<Reference>
相關(guān)PDF資料
PDF描述
K4H560438E-GCB0 DIODE ZENER SINGLE 300mW 22.1Vz 5mA-Izt 0.02514 0.05uA-Ir 17 SOT-23 3K/REEL
K4H560438E-GCB3 DIODE ZENER SINGLE 300mW 23.7Vz 5mA-Izt 0.02509 0.05uA-Ir 19 SOT-23 3K/REEL
K4H560438E-GCC4 DIODE ZENER SINGLE 300mW 27Vz 5mA-Izt 0.02503 0.05uA-Ir 21 SOT-23 3K/REEL
K4H560438E-GCCC DIODE ZENER SINGLE 300mW 29.8Vz 5mA-Izt 0.02503 0.05uA-Ir 23 SOT-23 3K/REEL
K4H560438E-GLA2 DIODE ZENER SINGLE 300mW 33Vz 5mA-Izt 0.02503 0.05uA-Ir 27 SOT-23 3K/REEL
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
K4H560438E-GCB0 制造商:Samsung Semiconductor 功能描述:DRAM Chip DDR SDRAM 256M-Bit 64Mx4 2.5V 60-Pin FBGA
K4H560438E-GCB3 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:256Mb E-die DDR SDRAM Specification 60Ball FBGA (x4/x8)
K4H560438E-GCC4 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:256Mb E-die DDR 400 SDRAM Specification 60Ball FBGA (x4/x8)
K4H560438E-GCCC 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:256Mb E-die DDR 400 SDRAM Specification 60Ball FBGA (x4/x8)
K4H560438E-GLA2 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:256Mb E-die DDR SDRAM Specification 60Ball FBGA (x4/x8)
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