Datasheet

AC and DC Input Measurement Levels
Single-Ended AC and DC Input Levels for Command and Address
NOTE :
1. For input only pins except /RESET : V
REF = VREFCA (DC).
2. See Overshoot and Undershoot Specifications section.
3. The AC peak noise on V
REF may not allow VREF to deviate from VREFCA (DC) by more than ±1% VDD
(for reference : approx. ±15 mV).
4. For reference : approx. VDD/2 ±15 mV.
Symbol Parameter Min. Max. U
nits Notes
V
IHCA (DC100) DC input logic high VREF + 0.100 VDD V 1
VILCA (DC100) DC input logic low VSS VREF - 0.100 V 1
VIHCA (AC175)
AC input logic high
V
REF + 0.175 -
V1,2
V
ILCA (AC175) AC input logic low
- V
REF - 0.175
V1,2
V
IHCA (AC150)
AC input logic high
V
REF + 0.150 -
V1,2
V
ILCA (AC150)
AC input logic low
- V
REF - 0.150
V1,2
V
IHCA (AC135) AC input logic high
- -
V1,2
V
ILCA (AC135) AC input logic low
- -
V1,2
V
IHCA (AC125)
AC input logic high
- -
V1,2
V
ILCA (AC125)
AC input logi
c low
- -
V1,2
V
REFCA (DC) Reference voltage for
ADD, CMD inputs
0.49 * VDD 0.51 * VDD V 3,4
AS4C256M16D3B-12BIN
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Rev.1.1 April 2017