H5TQ2G63BFR-H9C HYNIX SEMICONDUCTOR, H5TQ2G63BFR-H9C Datasheet - Page 34

• Manufacturer Part Number: H5TQ2G63BFR-H9C
• Description: 58T1898
• Manufacturer: HYNIX SEMICONDUCTOR

Specifications of H5TQ2G63BFR-H9C

• Memory Type: SDRAM
• Memory Configuration: 128M X 16
• Access Time: 13.5ns
• Interface Type: CMOS
• Memory Case Style: FBGA
• No. Of Pins: 96
• Operating Temperature Range: 0°C To +85°C
• Memory Size: 2 Gbit
• Rohs Compliant: Yes

Rev. 0.5 / Aug. 2010
5. AC and DC Input Measurement Levels
5.1 AC and DC Logic Input Levels for Single-Ended Signals
Single Ended AC and DC Input Levels
The dc-tolerance limits and ac-noise limits for the reference voltages VRefCA and VRefDQ are illustrated in
below Figure. It shows a valid reference voltage VRef (t) as a function of time. (VRef stands for VRefCA and
VRefDQ likewise).
VRef (DC) is the linear average of VRef (t) over a very long period of time (e.g. 1 sec). This average has to
meet the min/max requirements in Table.
Furthermore VRef (t) may temporarily deviate from VRef (DC) by no more than +/- 1% VDD.
VIH(DC)
VIL(DC)
VIH(AC)
VIL(AC)
V
V
Notes:
1. For DQ and DM, Vref = VrefDQ. For input any pins except RESET, Vref = VrefCA.
2. The “t.b.d.” entries might change based on overshoot and undershoot specification.
3. The ac peak noise on V
4. For reference: approx. VDD/2 +/- 15 mV.
Symbol
RefDQ(DC)
RefCA(DC)
(for reference: approx. +/- 15 mV).
DC input logic high
DC input logic low
AC input logic high
AC input logic low
Reference Voltage for DQ, DM inputs
Reference Voltage for ADD, CMD inputs
V
Ref(DC)
voltage
Ref
Illustration of Vref (DC) tolerance and Vref ac-noise limits
Parameter
may not allow V
V
Ref
ac-noise
Ref
to deviate from V
Vref + 0.100
Vref + 0.175
0.49 * VDD
0.49 * VDD
VSS
Min
Ref(DC)
by more than +/-1% VDD
V
Ref
(t)
Vref - 0.100
Vref - 0.175
0.51 * VDD
0.51 * VDD
VDD
Max
-
VDD
VSS
V
V
VDD/2
Ref(DC)max
Ref(DC)min
time
H5TQ2G63BFR
Unit
V
V
V
V
V
V
Notes
1, 2
1, 2
3, 4
3, 4
1
1
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