NM14F2KSLAXCL-3BNA datasheet(85/121 Pages) NANYA

85 / 121 page

Version 1.6

Nanya Technology Corp.

05/2018

4Gb SLC NAND + 2Gb LPDDR2

NM148(F)2KSLAXCL/NM1482NSLAXCL

NTC Proprietary

Level: Property

Single-Ended Levels for CK, , DQS, 

Symbol

Parameter

LPDDR2 1066

Unit

Min

Max

VSEH(AC)

Single-ended HIGH level for strobes

(VDDQ/2) + 0.22

Note 3

Single-ended HIGH level for CK,



(VDDCA/2) + 0.22

Note 3

VSEL(AC)

Single-ended LOW level for strobes

Note 3

(VDDQ/2) - 0.22

Single-ended LOW level for CK,



Note 3

(VDDCA/2) - 0.22

Notes:

For CK and , use VSEH/VSEL(AC) of CA; for strobes (DQS[3:0] and [3:0]) use VIH/VIL(AC) of DQ.

VIH(AC) and VIL(AC) for DQ are based on VREFDQ; VSEH(AC) and VSEL(AC) for CA are based on VREFCA. If a reduced AC HIGH or AC

LOW is used for a signal group, the reduced level applies.

These values are not defined, however the single-ended signals CK, , DQS0, , DQS1, , DQS2, , DQS3,

 must be within the respective limits (VIH(DC)max, VIL(DC)min) for single-ended signals, and must comply with the

specified limitations for overshoot and undershoot.

Cross-Point Voltage for Differential Input Signals (CK, , DQS, )

Symbol

Parameter

LPDDR2 1066

Unit

Min

Max

VIXCA(AC)

Differential input cross-point voltage relative to VDDCA/2 for CK and



-120

+120

VIXDQ(AC)

Differential input cross-point voltage relative to VDDQ/2 for DQS and



-120

+120

Notes:

1. The typical value of VIX(AC) is expected to be about 0.5 × VDD of the transmitting device, and it is expected to track variations

in VDD. VIX(AC) indicates the voltage at which differential input signals must cross.

2. For CK and , VREF = VREFCA(DC). For DQS and , VREF = VREFDQ(DC).

Slew Rate Definitions for Single-Ended Input Signals

Refer to single-ended slew rate definition for address, command and data signals respectively.

Slew Rate Definitions for Differential Input Signals

Description

Defined by

Measured

From

Differential input slew rate for rising edge

(CK,  and DQS, )

[VIHdiffmin

– VILdiffmax] / ΔTRdiff

VILdiffmax

VIHdiffmin

Differential input slew rate for falling edge

(CK,  and DQS, )

[VIHdiffmin

– VILdiffmax] / ΔTFdiff

VIHdiffmin

VILdiffmax

Notes:

1. The differential signals (CK,

 and DQS, ) must be linear between these thresholds.

NM14F2KSLAXCL-3BNA Datasheet(PDF) 85 Page - Nanya Technology Corporation.

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