MT42L256M32D4KP-3 IT:A【PDF 10/164 页】IC LPDDR2 SDRAM 8GBIT 168FBGA

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2Gb: x16, x32 Mobile LPDDR2 SDRAM S4

Features

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Current State Bank n to Command to Bank n Truth Table ................................................................ 107

Current State Bank n to Command to Bank m Truth Table ............................................................... 109

DM Truth Table .............................................................................................................................. 112

Absolute Maximum DC Ratings ...................................................................................................... 113

Input/Output Capacitance ............................................................................................................. 113

Switching for CA Input Signals ........................................................................................................ 114

Switching for I DD4R ......................................................................................................................... 115

Switching for I DD4W ........................................................................................................................ 115

I DD Specification Parameters and Operating Conditions .................................................................. 115

Recommended DC Operating Conditions ....................................................................................... 117

Input Leakage Current ................................................................................................................... 118

Operating Temperature Range ........................................................................................................ 118

Single-Ended AC and DC Input Levels for CA and CS# Inputs ........................................................... 119

Single-Ended AC and DC Input Levels for CKE ................................................................................ 119

Single-Ended AC and DC Input Levels for DQ and DM ..................................................................... 119

Differential AC and DC Input Levels ................................................................................................ 123

CK/CK# and DQS/DQS# Time Requirements Before Ringback ( t DVAC) ............................................ 124

Single-Ended Levels for CK, CK#, DQS, DQS# .................................................................................. 125

Crosspoint Voltage for Differential Input Signals (CK, CK#, DQS, DQS#) ........................................... 126

Differential Input Slew Rate Definition ............................................................................................ 127

Single-Ended AC and DC Output Levels .......................................................................................... 127

Differential AC and DC Output Levels ............................................................................................. 128

Single-Ended Output Slew Rate Definition ...................................................................................... 128

Single-Ended Output Slew Rate ...................................................................................................... 128

Differential Output Slew Rate Definition ......................................................................................... 129

Differential Output Slew Rate ......................................................................................................... 129

AC Overshoot/Undershoot Specification ......................................................................................... 130

Output Driver DC Electrical Characteristics with ZQ Calibration ...................................................... 132

Output Driver Sensitivity Definition ................................................................................................ 133

Output Driver Temperature and Voltage Sensitivity ......................................................................... 133

Output Driver DC Electrical Characteristics Without ZQ Calibration ................................................ 133

I-V Curves ..................................................................................................................................... 134

Definitions and Calculations .......................................................................................................... 137

t CK(abs), t CH(abs), and t CL(abs) Definitions ................................................................................... 138

Refresh Requirement Parameters (Per Density) ............................................................................... 141

AC Timing ..................................................................................................................................... 142

CA and CS# Setup and Hold Base Values (>400 MHz, 1 V/ns Slew Rate) ............................................ 150

CA and CS# Setup and Hold Base Values (<400 MHz, 1 V/ns Slew Rate) ............................................ 150

Derating Values for AC/DC-Based t IS/ t IH (AC220) ........................................................................... 150

Derating Values for AC/DC-Based t IS/ t IH (AC300) ........................................................................... 151

Required Time for Valid Transition – t VAC > V IH(AC) and < V IL(AC) ....................................................... 151

Data Setup and Hold Base Values (>400 MHz, 1 V/ns Slew Rate) ....................................................... 156

Data Setup and Hold Base Values (<400 MHz, 1 V/ns Slew Rate) ....................................................... 157

Derating Values for AC/DC-Based t DS/ t DH (AC220) ........................................................................ 157

Derating Values for AC/DC-Based t DS/ t DH (AC300) ........................................................................ 157

Required Time for Valid Transition – t VAC > V IH(AC) or < V IL(AC) ......................................................... 158

PDF: 09005aef83f3f2eb

2gb_mobile_lpddr2_s4_g69a.pdf – Rev. N 3/12 EN

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MT42L256M32D4KP-MS 制造商:Micron Technology Inc 功能描述:256MX32 LPDDR2 PLASTIC IND TEMP GREEN WFBGA 1.2V - Bulk