AS4C64M32MD2-25BCN Datasheet, PDF (92/129 Pages) Alliance Semiconductor Corporation – Deep Power Down Mode

AS4C64M32MD2-25BCN
AS4C128M16MD2-25BCN
8.5 Overshoot and Undershoot Specifications
Table 37 — AC Overshoot/Undershoot Specification
Parameter
Maximum peak amplitude allowed for overshoot area.
(See Figure 8.3)
Maximum peak amplitude allowed for undershoot area
(See Figure 8.3)
800
Units
Max
0.35
V
Max
0.35
V
Maximum area above VDD.
(See Figure 8.3)
Max
0.20
V-ns
Maximum area below VSS.
(See Figure 8.3)
Max
0.20
V-ns
(CA0-9, CS#, CKE, CK, CK#, DQ, DQS, DQS#, DM)
NOTE 1 For CA0-9, CK, CK#, CS#, and CKE, VDD stands for VDDCA. For DQ, DM, DQS, and DQS#, VDD stands for VDDQ.
NOTE 2 For CA0-9, CK, CK#, CS#, and CKE, VSS stands for VSSCA. For DQ, DM, DQS, and DQS#, VSS stands for VSSQ.
NOTE 3 Values are referenced from actual VDDQ, VDDCA, VSSQ and VSSCA levels.
Figure 8.3 — Overshoot and Undershoot Definition
NOTE 1 For CA0-9, CK, CK#, CS#, and CKE, VDD stands for VDDCA. For DQ, DM, DQS, and DQS#, VDD stands for VDDQ.
NOTE 2 For CA0-9, CK, CK#, CS#, and CKE, VDSS stands for VSSCA For DQ, DM, DQS, and DQS#, VSS stands for VSSQ.
NOTE 3 Maximum peak amplitude values are referenced from actual VDD and VSS values.
NOTE 4 Maximum area values are referenced from maximum operating VDD and VSS values.
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Rev.1.0 July 2016