M381L6423CTL 184pin Unbuffered DDR SDRAM MODULE 512MB DDR SDRAM MODULE (64Mx72(32Mx72*2 bank) based on 32Mx8 DDR SDRAM) Unbuffered 184pin DIMM 72-bit ECC/Parity Revision 0.3 May. 2002 Rev. 0.3 May. 2002 184pin Unbuffered DDR SDRAM MODULE M381L6423CTL Revision History Revision 0 (Oct. 2001) 1. First release for internal usage Revision 0.1 (Dec. 2001) Revised "Absolute maximum rating" table in page 38. . Changed "Voltage on VDDQ supply relative to VSS" value from -0.5~3.6V to -1~3.6V . Changed "power dissipation" value from 1.0W to 1.5W. - Revised AC parameter table From DDR266A - To DDR266B DDR200 DDR266A DDR266B DDR200 Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. tHZ tACmin -400ps tACmax -400ps tACmin -400ps tACmax -400ps tACmin -400ps tACmax -400ps -0.75 +0.75 -0.75 +0.75 -0.8 +0.8 tLZ tACmin -400ps tACmax -400ps tACmin -400ps tACmax -400ps tACmin -400ps tACmax -400ps -0.75 +0.75 -0.75 +0.75 -0.8 +0.8 tWPST (tCK) 0.25 0.25 0.25 0.4 0.6 0.4 0.6 0.4 0.6 tPDEX 10ns 10ns 10ns 7.5ns 7.5ns 10ns Deleted typical current in IDD spec. table Included address and control input setup/hold time(tIS/tIH) at slow slew rate in DDR200/266 AC specification Deleted Exit self refresh to write command(tXSW) in DDR200/266 AC specification Rename tXSA(exit self refresh to bank active command) to tXSNR(exit self refresh to non read command) at DDR200/266 Rename tXSR(exit self refresh to read command) to tXSRD at DDR200/266 Rename tWPREH(DQS in hold time) to tWPRE at DDR200/266 Rename tREF(Refresh interval time) to tREFI at DDR200/266 Changed tWR value from 2tCK to 15ns. Added tDAL(tWR+tRP) --Rename tCDLR(Write data out to Read command) t0 tWTR Revision 0.2 (Jan. 2002) 1. Added tRAP(Active to Read w/ autoprecharge command) Revision 0.3 (May. 2002) 1. Change pin location of A13 from pin 103 to pin 167 Rev. 0.3 May. 2002 184pin Unbuffered DDR SDRAM MODULE M381L6423CTL M381L6423CTL DDR SDRAM 184pin DIMM 64Mx72 DDR SDRAM 184pin DIMM based on 32Mx8 FEATURE GENERAL DESCRIPTION The Samsung M381L6423CTL is 64M bit x 72 Double Data * Performance range Part No. Rate SDRAM high density memory modules. The Samsung Max Freq. Interface M381L6423CTL consists of eighteen CMOS 32M x 8 bit with M381L6423CTL-C(L)B3 167MHz(6.0ns@CL=2.5) 4banks Double Data Rate SDRAMs in 66pin TSOP-II(400mil) M381L6423CTL-C(L)A2 133MHz(7.5ns@CL=2) packages mounted on a 184pin glass-epoxy substrate. Four M381L6423CTL-C(L)B0 133MHz(7.5ns@CL=2.5) 0.1uF decoupling capacitors are mounted on the printed circuit board in parallel for each DDR SDRAM. The M381L6423CTL is Dual In-line Memory Modules and intended for mounting into 184pin edge connector sockets. Synchronous design allows precise cycle control with the use of system clock. Data I/O transactions are possible on both edges of DQS. Range of operating frequencies, programmable SSTL_2 * Power supply : Vdd: 2.5V 0.2V, Vddq: 2.5V 0.2V * Double-data-rate architecture; two data transfers per clock cycle * Bidirectional data strobe(DQS) * Differential clock inputs(CK and CK) * DLL aligns DQ and DQS transition with CK transition * Programmable Read latency 2, 2.5 (clock) latencies and burst lengths allow the same device to be useful * Programmable Burst length (2, 4, 8) * Programmable Burst type (sequential & interleave) for a variety of high bandwidth, high performance memory sys- * Edge aligned data output, center aligned data input tem applications. * Auto & Self refresh, 7.8us refresh interval(8K/64ms refresh) * Serial presence detect with EEPROM * PCB : Height 1250 mil, double sided component PIN CONFIGURATIONS (Front side/back side) Pin Front Pin Front Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 VREF DQ0 VSS DQ1 DQS0 DQ2 VDD DQ3 NC NC VSS DQ8 DQ9 DQS1 VDDQ CK1 /CK1 VSS DQ10 DQ11 CKE0 VDDQ DQ16 DQ17 DQS2 VSS A9 DQ18 A7 VDDQ DQ19 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 A5 DQ24 VSS DQ25 DQS3 A4 VDD DQ26 DQ27 A2 VSS A1 CB0 CB1 VDD DQS8 A0 CB2 VSS CB3 BA1 KEY DQ32 VDDQ DQ33 DQS4 DQ34 VSS BA0 DQ35 DQ40 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 Front Pin Back Pin Back VDDQ /WE DQ41 /CAS VSS DQS5 DQ42 DQ43 VDD */CS2 DQ48 DQ49 VSS /CK2 CK2 VDDQ DQS6 DQ50 DQ51 VSS VDDID DQ56 DQ57 VDD DQS7 DQ58 DQ59 VSS NC SDA SCL VSS DQ4 DQ5 VDDQ DM0 DQ6 DQ7 VSS NC NC NC VDDQ DQ12 DQ13 DM1 VDD DQ14 DQ15 CKE1 VDDQ *BA2 DQ20 A12 VSS DQ21 A11 DM2 VDD DQ22 A8 DQ23 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 VSS A6 DQ28 DQ29 VDDQ DM3 A3 DQ30 VSS DQ31 CB4 CB5 VDDQ CK0 /CK0 VSS DM8 A10 CB6 VDDQ CB7 KEY VSS DQ36 DQ37 VDD DM4 DQ38 DQ39 VSS DQ44 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 145 146 147 148 149 150 151 152 153 PIN DESCRIPTION Pin Back 154 /RAS 155 DQ45 156 VDDQ 157 /CS0 158 /CS1 159 DM5 160 VSS 161 DQ46 162 DQ47 163 */CS3 164 VDDQ 165 DQ52 166 DQ53 167 *A13 168 VDD 169 DM6 170 DQ54 171 DQ55 172 VDDQ 173 NC 174 DQ60 175 DQ61 176 VSS 177 DM7 178 DQ62 179 DQ63 180 VDDQ 181 SA0 182 SA1 183 SA2 184 VDDSPD Pin Name Function A0 ~ A12 Address input (Multiplexed) BA0 ~ BA1 Bank Select Address DQ0 ~ DQ63 Data input/output CB0 ~ CB7 Check bit(Data-in/data-out) DQS0 ~ DQS8 Data Strobe input/output CK0,CK0 ~ CK2, CK2 Clock input CKE0,CKE1 Clock enable input CS0 , CS1 Chip select input RAS Row address strobe CAS Column address strobe WE Write enable DM0 ~ DM8 Data - in mask VDD Power supply (2.5V) VDDQ Power Supply for DQS(2.5V) VSS Ground VREF Power supply for reference VDDSPD Serial EEPROM Power Supply (2.3V to 3.6V ) SDA Serial data I/O SCL Serial clock SA0 ~ 2 Address in EEPROM VDDID VDD identification flag NC No connection * These pins are not used in this module. SAMSUNG ELECTRONICS CO., Ltd. reserves the right to change products and specifications without notice. Rev. 0.3 May. 2002 184pin Unbuffered DDR SDRAM MODULE M381L6423CTL Functional Block Diagram CS1 CS0 DQS4 DM4 DQS0 DM0 DQ0 DQ1 DQ2 DQ3 DQ4 DM I/O 7 CS I/O 6 I/O 1 I/O 0 D0 DQS DM I/O 0 I/O 1 I/O 6 DQS DQ32 DQ33 DQ34 DQ35 I/O 7 I/O 2 I/O 5 I/O 4 I/O 3 DQ5 DQ6 DQ7 CS D9 DQ36 DQ37 DQ38 I/O 3 I/O 4 I/O 5 I/O 2 DQ39 DM I/O 7 I/O 6 CS DQS D4 I/O 1 I/O 0 I/O 5 DM I/O 0 I/O 1 I/O 6 I/O 7 CS DQS D13 I/O 2 I/O 3 I/O 4 I/O 4 I/O 3 I/O 2 I/O 5 DQS5 DM5 DQS1 DM1 DM DQ8 I/O 7 I/O 6 DQ9 DQ10 DQ11 C S DQS DM I/O 0 I/O 1 I/O 6 I/O 7 D1 I/O 1 I/O 0 I/O 5 DQ12 DQ13 DQS DQ40 DQ41 DQ42 DQ43 DQ44 DQ45 DQ46 DQ47 I/O 2 I/O 3 I/O 4 I/O 4 I/O 3 I/O 2 DQ14 DQ15 CS D10 I/O 5 DM I/O 7 I/O 6 I/O 1 CS DQS D5 I/O 0 I/O 5 I/O 4 DM I/O 0 I/O 1 I/O 6 I/O 7 I/O I/O I/O I/O I/O 3 I/O 2 CS DQS D14 2 3 4 5 DQS6 DM6 DQS2 DM2 DM I/O 7 I/O 6 I/O 1 I/O 0 DQ16 DQ17 DQ18 DQ19 DQ20 CS DM DQS I/O 0 I/O 1 D2 DQS DQ48 DQ49 DQ50 DQ51 D11 I/O 6 I/O 7 I/O 2 I/O 5 I/O 4 I/O 3 DQ21 DQ22 DQ23 CS DQ52 DQ53 DQ54 DQ55 I/O 3 I/O 4 I/O 5 I/O 2 DM I/O 7 I/O 6 I/O 1 I/O 0 CS DQS D6 DM I/O 0 I/O 1 CS DQS D15 I/O 6 I/O 7 I/O 2 I/O 5 I/O 4 I/O 3 I/O 3 I/O 4 I/O 5 I/O 2 DQS7 DM7 DQS3 DM3 DM I/O 7 I/O 6 I/O 1 I/O 0 DQ24 DQ25 DQ26 DQ27 DQ28 CS DQS DM I/O 0 I/O 1 I/O 6 D3 DM I/O 7 CS CB0 CB1 CB2 CB3 I/O 6 I/O 1 I/O 0 D8 CB4 CB5 I/O I/O I/O I/O CB6 CB7 DM I/O 0 I/O 1 I/O 6 DQS 5 4 3 2 A2 SA0 SA1 SA2 DQ60 DQ61 DQ62 DQ63 CS CS DQS D7 I/O 1 I/O 0 I/O 5 CK0/CK0 CK1/CK1 CK2/CK2 DM I/O 0 I/O 1 I/O 6 I/O 7 C S DQS D16 I/O 2 I/O 3 I/O 4 I/O 4 I/O 3 I/O 2 I/O 5 DQS *Clock Net Wiring D17 Dram1 Dram2 R=120 * Clock Wiring Clock SDRAMs Input SDA A1 DQ58 DQ59 DM I/O 7 I/O 6 I/O 4 I/O 5 Serial PD A0 DQ56 DQ57 I/O 7 I/O 2 I/O 3 SCL WP D12 I/O 3 I/O 4 I/O 5 I/O 2 DQS8 DM8 DQS I/O 7 I/O 2 I/O 5 I/O 4 I/O 3 DQ29 DQ30 DQ31 CS Card Edge 6 SDRAMs 6 SDRAMs 6 SDRAMs Dram3 Dram4 Dram5 Dram6 BA0 - BA1 A0 - A13 RAS CAS BA0-BA1: SDRAMs D0 - D17 A0-A13: SDRAMs D0 - D17 RAS: SDRAMs D0 - D17 VDDSPD CAS: SDRAMs D0 - D17 V D D/V DDQ CKE1 CKE: SDRAMs D9 - D17 CKE0 CKE: SDRAMs D0 - D8 WE WE: SDRAMs D0 - D17 SPD D0 - D17 D0 - D17 VREF VSS D0 - D17 D0 - D17 Notes: 1. DQ-to-I/O wiring is shown as recommended but may be changed. 2. DQ/DQS/DM/CKE/S relationships must be maintained as shown. 3. DQ, DQS, DM resistors: 22 Ohms. Rev. 0.3 May. 2002 M381L6423CTL 184pin Unbuffered DDR SDRAM MODULE Absolute Maximum Rate Parameter Symbol Value Unit Voltage on any pin relative to V SS V I N, VOUT -0.5 ~ 3.6 V Voltage on VDD & V DDQ supply relative to V SS V DD, V DDQ -1.0 ~ 3.6 V Storage temperature TSTG -55 ~ +150 C Power dissipation PD 27 W Short circuit current IOS 50 mA Note : Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded. Functional operation should be restricted to recommended operating condition. Exposure to higher than recommended voltage for extended periods of time could affect device reliability. POWER & DC OPERATING CONDITIONS (SSTL_2 In/Out) Recommended operating conditions(Voltage referenced to V SS =0V, T A=0 to 70C) Parameter Symbol Min Max Supply voltage(for device with a nominal V DD of 2.5V) V DD 2.3 2.7 I/O Supply voltage V DDQ 2.3 2.7 V I/O Reference voltage V REF VDDQ/2-50mV VDDQ/2+50mV V 1 V TT V REF-0.04 V REF+0.04 V 2 Input logic high voltage V I H(DC) V REF+0.15 V DDQ +0.3 V 4 Input logic low voltage V IL (DC) -0.3 V REF-0.15 V 4 Input Voltage Level, CK and CK inputs V I N(DC) -0.3 V DDQ +0.3 V Input Differential Voltage, CK and CK inputs V I D(DC) 0.3 V DDQ +0.6 V 3 Input crossing point voltage, CK and CK inputs V IX (DC) 1.15 1.35 V 5 II -2 2 uA Output leakage current IO Z -5 5 uA Output High Current(Normal strengh driver) ;V OUT = VT T + 0.84V IOH -16.8 mA Output High Current(Normal strengh driver) ;V OUT = VT T - 0.84V IOL 16.8 mA Output High Current(Half strengh driver) ;V OUT = V T T + 0.45V IOH -9 mA Output High Current(Half strengh driver) ;V OUT = VT T - 0.45V IOL 9 mA I/O Termination voltage(system) Input leakage current Unit Note Notes 1. Includes 25mV margin for DC offset on V REF, and a combined total of 50mV margin for all AC noise and DC offset on V REF, bandwidth limited to 20MHz. The DRAM must accommodate DRAM current spikes on V REF and internal DRAM noise coupled TO V REF, both of which may result in V REF noise. V REF should be de-coupled with an inductance of 3nH. 2.V TT is not applied directly to the device. V T T is a system supply for signal termination resistors, is expected to be set equal to V REF, and must track variations in the DC level of V REF 3. V I D is the magnitude of the difference between the input level on CK and the input level on CK. 4. These parameters should be tested at the pin on actual components and may be checked at either the pin or the pad in simulation. The AC and DC input specifications are relative to a VREF envelop that has been bandwidth limited to 200MHZ. 5. The value of VIX is expected to equal 0.5*V DDQ of the transmitting device and must track variations in the dc level of the same. 6. These charactericteristics obey the SSTL-2 class II standards. Rev. 0.3 May. 2002 184pin Unbuffered DDR SDRAM MODULE M381L6423CTL DDR SDRAM IDD spec table Symbol B3(DDR333@CL=2.5) A2(DDR266@CL=2) B0(DDR266@CL=2.5) Unit IDD0 1575 1305 1305 mA IDD1 1800 1530 1530 mA IDD2P 54 54 54 mA IDD2F 540 486 486 mA IDD2Q 360 324 324 mA IDD3P 720 576 576 mA IDD3N 1080 900 900 mA IDD4R 2205 1845 1845 mA IDD4W 2115 1755 1755 mA IDD5 IDD6 2295 2070 2070 mA Normal 54 54 54 mA Low power 27 27 27 mA 3690 3015 3015 mA IDD7A Notes Optional * Module IDD was calculated on the basis of component IDD and can be differently measured according to DQ loading cap. AC OPERATING CONDITIONS Parameter/Condition Symbol Min Input High (Logic 1) Voltage, DQ, DQS and DM signals VIH(AC) VREF + 0.31 Input Low (Logic 0) Voltage, DQ, DQS and DM signals. VIL(AC) Input Differential Voltage, CK and CK inputs VID(AC) Input Crossing Point Voltage, CK and CK inputs VIX(AC) Max Unit Note V 3 VREF - 0.31 V 3 0.7 VDDQ+0.6 V 1 0.5*VDDQ-0.2 0.5*VDDQ+0.2 V 2 Note 1. VID is the magnitude of the difference between the input level on CK and the input on CK. 2. The value of V IX is expected to equal 0.5*V DDQ of the transmitting device and must track variations in the DC level of the same. 3. These parameters should be tested at the pim on actual components and may be checked at either the pin or the pad in simulation. the AC and DC input specificatims are refation to a Vref envelope that has been bandwidth limited 20MHz. AC OPERATING TEST CONDITIONS Parameter (V DD =2.5V, V DDQ =2.5V, T A= 0 to 70 C ) Value Unit Input reference voltage for Clock 0.5 * VDDQ V Input signal maximum peak swing 1.5 V VREF+0.31/VREF-0.31 V VREF V Vtt V Input Levels(VIH/VIL) Input timing measurement reference level Output timing measurement reference level Output load condition Note See Load Circuit Rev. 0.3 May. 2002 184pin Unbuffered DDR SDRAM MODULE M381L6423CTL V tt =0.5*V DDQ RT =50 Output Z0=50 V REF =0.5*V DDQ CLOAD =30pF Output Load Circuit (SSTL_2) Input/Output CAPACITANCE (V DD =2.5V, V DDQ =2.5V, T A = 25C, f=1MHz) Parameter Symbol Min Max Unit Input capacitance(A 0 ~ A 12, BA 0 ~ BA 1 ,RAS,CAS, W E ) CIN1 69 87 pF Input capacitance(CKE 0,CKE 1 ) CIN2 44 53 pF Input capacitance( CS 0, CS 1 ) CIN3 44 53 pF Input capacitance( CLK 0 , CLK 1, CLK 2) CIN4 27 34 pF Input capacitance(DM 0~DM 8) CIN5 6 8 pF Data & DQS input/output capacitance(DQ 0~DQ63 ) C OUT 1 6 8 pF Data input/output capacitance(CB 0~CB 7) C OUT2 6 8 pF Rev. 0.3 May. 2002 184pin Unbuffered DDR SDRAM MODULE M381L6423CTL AC Timming Parameters & Specifications Parameter (These AC charicteristics were tested on the Component) -TCB3 (DDR333) Symbol Min Row cycle time Max -TCA2 (DDR266A) Min Max -TCB0 (DDR266B) Min Unit tRC 60 65 65 Refresh row cycle time tRFC 72 75 75 Row active time tRAS 42 RAS to CAS delay tRCD 18 20 20 ns tRP 18 20 20 ns tRRD 12 15 15 ns tWR 15 15 15 ns tWTR 1 1 1 tCK Row precharge time Row active to Row active delay Write recovery time Last data in to Read command Col. address to Col. address delay tCCD CL=2.0 Clock cycle time CL=2.5 Clock high level width Clock low level width 70K 1 45 120K 1 45 ns ns 120K 1 ns tCK 7.5 12 7.5 12 10 12 ns 5 6 12 7.5 12 7.5 12 ns 5 tCH 0.45 0.55 0.45 0.55 0.45 0.55 tCK tCK tCL 0.45 0.55 0.45 0.55 0.45 0.55 tCK tDQSCK -0.6 +0.6 -0.75 +0.75 -0.75 +0.75 ns Output data access time from CK/ CK tAC -0.7 +0.7 -0.75 +0.75 -0.75 +0.75 ns Data strobe edge to ouput data edge tDQSQ - 0.45 - 0.5 - 0.5 ns Read Preamble tRPRE 0.9 1.1 0.9 1.1 0.9 1.1 tCK Read Postamble tRPST 0.4 0.6 0.4 0.6 0.4 0.6 tCK CK to valid DQS-in tDQSS 0.75 1.25 0.75 1.25 0.75 1.25 tCK DQS-in setup time tWPRES 0 0 0 ns DQS-in hold time DQS-out access time from CK/CK Note Max 5 2 tWPRE 0.25 0.25 0.25 tCK DQS falling edge to CK rising-setup time tDSS 0.2 0.2 0.2 tCK DQS falling edge from CK rising-hold time tDSH 0.2 0.2 0.2 tCK DQS-in high level width tDQSH 0.35 0.35 0.35 tCK DQS-in low level width tDQSL 0.35 0.35 0.35 tDSC 0.9 Address and Control Input setup time(fast) tIS 0.75 0.9 0.9 ns 6 Address and Control Input hold time(fast) tIH 0.75 0.9 0.9 ns 6 Address and Control Input setup time(slow) tIS 0.8 1.0 1.0 ns 6 Address and Control Input hold time(slow) tIH 0.8 1.0 1.0 ns 6 Data-out high impedence time from CK/ CK tHZ -0.7 +0.7 -0.75 +0.75 -0.75 +0.75 ns Data-out low impedence time from CK/ CK tLZ -0.7 +0.7 -0.75 +0.75 -0.75 +0.75 ns DQS-in cycle time Input Slew Rate(for input only pins) 1.1 0.9 1.1 0.9 tCK 1.1 tCK tSL(I) 0.5 0.5 0.5 V/ns Input Slew Rate(for I/O pins) tSL(IO) 0.5 0.5 0.5 V/ns 6 7 Output Slew Rate(x4,x8) tSL(O) 1.0 4.5 1.0 4.5 1.0 4.5 V/ns 10 Output Slew Rate Matching Ratio(rise to fall) tSLMR 0.67 1.5 0.67 1.5 0.67 1.5 Rev. 0.3 May. 2002 184pin Unbuffered DDR SDRAM MODULE M381L6423CTL Parameter -TCB3 (DDR333) Symbol Min -TCA2 (DDR266A) Max Min -TCB0 (DDR266B) Max Min Unit Note Max Mode register set cycle time tMRD 12 15 15 ns DQ & DM setup time to DQS tDS 0.45 0.5 0.5 ns 7,8,9 DQ & DM hold time to DQS tDH 0.45 0.5 0.5 ns 7,8,9 Control & Address input pulse width tIPW 2.2 2.2 2.2 ns DQ & DM input pulse width tDIPW 1.75 1.75 1.75 ns Power down exit time tPDEX 6 7.5 7.5 ns Exit self refresh to non-Read command tXSNR 75 75 75 ns Exit self refresh to read command tXSRD 200 200 200 tCK tREFI 7.8 7.8 7.8 us 1 Output DQS valid window tQH tHP -tQHS - tHP -tQHS - tHP -tQHS - ns 5 Clock half period tHP tCLmin or tCHmin - tCLmin or tCHmin - tCLmin or tCHmin - ns Refresh interval time Data hold skew factor DQS write postamble time Active to Read with Auto precharge command Autoprecharge write recovery + Precharge time tQHS 0.55 0.6 0.75 tWPST 0.4 0.4 0.6 0.4 tRAP 20 20 20 tDAL (tWR/tCK) + (tRP/tCK) (tWR/tCK) + (tRP/tCK) (tWR/tCK) + (tRP/tCK) 4 0.75 ns 0.6 tCK 3 tCK 11 1. Maximum burst refresh cycle : 8 2. The specific requirement is that DQS be valid(High or Low) on or before this CK edge. The case shown(DQS going from High_Z to logic Low) applies when no writes were previously in progress on the bus. If a previous write was in progress, DQS could be High at this time, depending on tDQSS. 3. The maximum limit for this parameter is not a device limit. The device will operate with a great value for this parameter, but system performance (bus turnaround) will degrade accordingly. 4. A write command can be applied with t RCD satisfied after this command. 5. For registered DIMMs, t CL and t CH are 45% of the period including both the half period jitter (t JIT(HP) ) of the PLL and the half period jitter due to crosstalk (t JIT(crosstalk) ) on the DIMM. 6. Input Setup/Hold Slew Rate Derating Input Setup/Hold Slew Rate tIS tIH (V/ns) (ps) (ps) 0.5 0 0 0.4 +50 +50 0.3 +100 +100 This derating table is used to increase t IS /tIH in the case where the input slew rate is below 0.5V/ns. Input setup/hold slew rate based on the lesser of AC-AC slew rate and DC-DC slew rate. 7. I/O Setup/Hold Slew Rate Derating I/O Setup/Hold Slew Rate tDS tDH (V/ns) (ps) (ps) 0.5 0 0 0.4 +75 +75 0.3 +150 +150 This derating table is used to increase t DS /tDH in the case where the I/O slew rate is below 0.5V/ns. I/O setup/hold slew rate based on the lesser of AC-AC slew rate and DC-DC slew rate. Rev. 0.3 May. 2002 184pin Unbuffered DDR SDRAM MODULE M381L6423CTL 8. I/O Setup/Hold Plateau Derating I/O Input Level tDS tDH (mV) (ps) (ps) 280 +50 +50 This derating table is used to increase tDS/tDH in the case where the input level is flat below VREF 310mV for a duration of up to 2ns. 9. I/O Delta Rise/Fall Rate(1/slew-rate) Derating Delta Rise/Fall Rate tDS tDH (ns/V) (ps) (ps) 0 0 0 0.25 +50 +50 0.5 +100 +100 This derating table is used to increase t DS /tDH in the case where the DQ and DQS slew rates differ. The Delta Rise/Fall Rate is calated as 1/SlewRate1-1/SlewRate2. For example, if slew rate 1 = 5V/ns and slew rate 2 =.4V/ns then the Delta Rise/Fall Rate =-0/5ns/V. Input S/H slew rate based on larger of AC-AC delta rise/fall rate and DC-DC delta rise/fall rate. 10. This parameter is fir system simulation purpose. It is guranteed by design. 11. For each of the terms, if not already an integer, round to the next highest integer. tCK is actual to the system clock cyc le time. <Reference> The following table specifies derating values for the specifications listed if the single-ended clock skew rate is less than 1.0V/ns. CK slew rate (Single ended) tIH/tIS (ps) tDSS/tDSH (ps) tAC/tDQSCK (ps) tLZ(min) (ps) tHZ(max) (ps) 1.0V/ns 0 0 0 0 0 0.75V/ns +50 +50 +50 -50 +50 0.5V/ns +100 +100 +100 -100 +100 Rev. 0.3 May. 2002 184pin Unbuffered DDR SDRAM MODULE M381L6423CTL (V=Valid, X=Don t Care, H=Logic High, L=Logic Low) Command Truth Table COMMAND CKEn-1 CKEn CS RAS CAS WE BA 0,1 A 10/AP A 11, A 12 A9 ~ A 0 Note Register Extended MRS H X L L L L OP CODE 1, 2 Register Mode Register Set H X L L L L OP CODE 1, 2 L L L H X Auto Refresh H H Refresh Entry Self Refresh Exit 3 L L H 3 L H H H H X X X 3 Bank Active & Row Addr. H X L L H H V Read & Column Address H X L H L H V Write & Column Address Auto Precharge Disable H X L H L L V H X L H H L H X L L H L All Banks Entry H L Active Power Down Exit L H Entry H L Precharge Power Down Mode Exit Column Address (A 0~A9 ) L H Bank Selection Precharge Column Address (A 0~A9 ) H Auto Precharge Enable Burst Stop Row Address L Auto Precharge Enable Auto Precharge Disable L DM H No operation (NOP) : Not defined H H H X X X L V V V X X X X H X X X L H H H H X X X L V V V X X V L X H H X X X L H H H 4 4 4 4, 6 7 X 5 X X X X 3 X 8 9 X 9 Note : 1. OP Code : Operand Code. A 0 ~ A 12 & BA 0 ~ BA1 : Program keys. (@EMRS/MRS) 2. EMRS/ MRS can be issued only at all banks precharge state. A new command can be issued 2 clock cycles after EMRS or MRS. 3. Auto refresh functions are same as the CBR refresh of DRAM. The automatical precharge without row precharge command is meant by "Auto". Auto/self refresh can be issued only at all banks precharge state. 4. BA0 ~ BA1 : Bank select addresses. If both BA0 and BA 1 are "Low" at read, write, row active and precharge, bank A is selected. If BA0 is "High" and BA 1 is "Low" at read, write, row active and precharge, bank B is selected. If BA0 is "Low" and BA 1 is "High" at read, write, row active and precharge, bank C is selected. If both BA0 and BA 1 are "High" at read, write, row active and precharge, bank D is selected. 5. If A 10 /AP is "High" at row precharge, BA 0 and BA 1 are ignored and all banks are selected. 6. During burst write with auto precharge, new read/write command can not be issued. Another bank read/write command can be issued after the end of burst. New row active of the associated bank can be issued at t RP after the end of burst. 7. Burst stop command is valid at every burst length. 8. DM sampled at the rising and falling edges of the DQS and Data-in are masked at the both edges (Write DM latency is 0). 9. This combination is not defined for any function, which means "No Operation(NOP)" in DDR SDRAM. Rev. 0.3 May. 2002 184pin Unbuffered DDR SDRAM MODULE M381L6423CTL PACKAGE DIMENSIONS Units : Inches (Millimeters) 5.25 0.005 (133.350 0.13) 0.118 (3.00) 5.077 (128.950) B 0 .1 00 Min A 0.7 (17 .8 0) (2.30 Min ) 0 .3 93 (1 0.00) (4.00 ) (2X ) 0.157 1.25 0.006 (31.75 0.15) 2.500 0.10 M B A 0.145 Max 1.95 2.55 (64.77) C (49.53) (3.67 Max) 0.157 (4.00) 0.100 0.26 (6.62) 0.250 (6.350) (2 .5 0 ) 0.050 0.0039 (1.270 0.10) 0.118 (3.00) 0.039 0.002 (1.000 0.050) 0.0787 R (2.00) 0.1496 (3.80) 0.0078 0.006 (0.20 0.15) 2.175 0.071 (1.8 0) Detail A 0.050 (1.270 ) Detail B 0.1575 (4.00) 0.10 M C A M B Tolerances : 0.005(.13) unless otherwise specified. The used device is 32Mx8 DDR SDRAM, TSOP. SDRAM Part NO : K4H560838C Rev. 0.3 May. 2002