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| 1GB-AUTO-AS4C128M8D3 Datasheet, PDF (23/84 Pages) Alliance Semiconductor Corporation – Fully synchronous operation | |||
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1Gb Auto-AS4C128M8D3
Table 13. Single-Ended AC and DC Input Levels for Command and Address
Symbol
Parameter
-12BAN
Min.
Max.
Unit Note
VIH.CA(DC100) DC input logic high
VREF+0.1
VDD
V 1,5
VIL.CA(DC100) DC input logic low
VSS
VREF-0.1
V 1,6
VIH.CA(AC175) AC input logic high
VREF+0.175
-
V 1,2
VIL.CA(AC175) AC input logic low
-
VREF-0.175
V 1,2
VIH.CA(AC150) AC input logic high
VREF+0.15
-
V 1,2
VIL.CA(AC150) AC input logic low
-
VREF-0.15
V 1,2
VRefCA(DC)
Reference Voltage for ADD, CMD inputs
0.49xVDD
0.51xVDD
V 3,4
NOTE 1: For input only pins except RESET#. Vref = VrefCA(DC).
NOTE 2: See âOvershoot and Undershoot Specificationsâ.
NOTE 3: The ac peak noise on VRef may not allow VRef to deviate from VRefCA(DC) by more than +/-1% VDD.
NOTE 4: For reference: approx. VDD/2 +/- 15 mV.
NOTE 5: VIH(dc) is used as a simplified symbol for VIH.CA(DC100)
NOTE 6: VIL(dc) is used as a simplified symbol for VIL.CA(DC100)
NOTE 7: VIH(ac) is used as a simplified symbol for VIH.CA(AC175), VIH.CA(AC150) and VIH.CA(AC175) value is used
when Vref + 0.175V is referenced, VIH.CA(AC150) value is used when Vref + 0.150V is referenced.
NOTE 8: VIL(ac) is used as a simplified symbol for VIL.CA(AC175), VIL.CA(AC150) and VIL.CA(AC175) value is used when
Vref - 0.175V is referenced, VIL.CA(AC150) value is used when Vref - 0.150V is referenced.
Table 14. Single-Ended AC and DC Input Levels for DQ and DM
Symbol
Parameter
-12BAN
Min.
Max.
Unit Note
VIH.DQ(DC100) DC input logic high
VREF+0.1
VDD
V 1,5
VIL.DQ(DC100) DC input logic low
VSS
VREF-0.1
V 1,6
VIH.DQ(AC150) AC input logic high
VREF+0.15
-
V 1,2
VIL.DQ(AC150) AC input logic low
-
VREF-0.15
V 1,2
VRefDQ(DC)
Reference Voltage for DQ, DM inputs
0.49xVDD
0.51xVDD
V 3,4
NOTE 1: Vref = VrefDQ(DC).
NOTE 2: See âOvershoot and Undershoot Specificationsâ.
NOTE 3: The ac peak noise on VRef may not allow VRef to deviate from VRefDQ(DC) by more than +/-1% VDD.
NOTE 4: For reference: approx. VDD/2 +/- 15 mV.
NOTE 5: VIH(dc) is used as a simplified symbol for VIH.DQ(DC100)
NOTE 6: VIL(dc) is used as a simplified symbol for VIL.DQ(DC100)
NOTE 7: VIH(ac) is used as a simplified symbol for VIH.DQ(AC150) and VIH.DQ(AC150) value is used when Vref + 0.150V
is referenced.
NOTE 8: VIL(ac) is used as a simplified symbol for VIL.DQ(AC150) and VIL.DQ(AC150) value is used when Vref - 0.150V is
referenced.
Confidential
-23-
Rev.1.0 May 2015
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