Apacer Memory Product Specification 2048MB DDR2 DIMM 2GB DDR2 DIMM based on ,8Banks, 1.8V DDR2 DIMM with SPD 128MX8 Features Performance range ( Bandwidth: 5.3 GB/sec ) Part Number Max Freq. (Clock) Speed Grade 78.A1G9O.404 333MHz(3ns CL5) 667Mbps JEDECstandard 1.8V 0.1V Power Supply VDDQ = 1.8V 0.1V Internal Bank: 8 Bank Posted CAS Programmable CAS Latency: 4, 5, 6 Programmable Additive Latency: 0, 1 , 2 , 3 and 4 Write Latency(WL) = Read Latency(RL) -1 Burst Length: 4 , 8(Interleave/nibble sequential) Programmable Sequential / Interleave Burst Mode Bi-directional Differential Data-Strobe (Single-ended data-strobe is an optional feature) Off-Chip Driver(OCD) Impedance Adjustment On Die Termination Refresh and Self Refresh Average Refesh Period 7.8us Serial presence detect with EEPROM Compliance with RoHS Compliance with CE Operating Temperature Rang: Commercial 0C TC 85C Refresh: auto-refresh, self-refresh Average refresh period 7.8us at 0C TC 85C 3.9us at 85C TC 95C Pin Description Pin Name Description Pin Name Description A0-A13 DDR2 SDRAM address bus CK0, CK1, CK2 DDR2 SDRAM clocks (positive line of differential pair) BA0-BA2 DDR2 SDRAM bank select CK0, CK1, CK2 DDR2 SDRAM clocks (negative line of differential pair) 2 RAS DDR2 SDRAM row address strobe SCL I C serial bus clock for EEPROM 2 CAS DDR2 SDRAM column address strobe SDA I C serial bus data line for EEPROM 2 WE DDR2 SDRAM wirte enable SA0-SA2 I C serial address select for EEPROM S0, S1 DIMM Rank Select Lines V * DDR2 SDRAM core power supply DD V * CKE0,CKE1 DDR2 SDRAM clock enable lines DDR2 SDRAM I/O Driver power supply DDQ ODT0, ODT1 On-die termination control lines V DDR2 SDRAM I/O reference supply REF DQ0 - DQ63 DIMM memory data bus V Power supply return (ground) SS V SPD CB0 - CB7 DIMM ECC check bits Serial EEPROM positive power supply DD DQS0 - DQS8 DDR2 SDRAM data strobes NC Spare Pins(no connect) DM(0-8) DDR2 SDRAM data masks RESET Not used on UDIMM Used by memory bus analysis tools (unused on memory DQS0-DQS8 DDR2 SDRAM differential data strobes TEST DIMMs) *The VDD and VDDQ pins are tied to the single power-plane on PCB.Apacer Memory Product Specification Pin Description Pin Front Pin Back Pin Front Pin Back Pin Front Pin Back Pin Front Pin Back V V V V V 1 REF 121 SS 31 DQ19 151 SS 61 A4 181 DDQ 91 SS 211 DM5 2 V 122 DQ4 32 V 152 DQ28 62 V 182 A3 92 DQS5 212 NC SS SS DDQ V 3 DQ0 123 DQ5 33 DQ24 153 DQ29 63 A2 183 A1 93 DQS5 213 SS 4DQ1 124 V 34 DQ25 154 V 64 V 184 V 94 V 214 DQ46 SS SS DD DD SS 5 V 125 DM0 35 V 155 DM3 KEY 95 DQ42 215 DQ47 SS SS V V 6DQS0126 NC 36 DQS3 156 NC 65 185 CK0 96 DQ43 216 SS SS 7DQS0 127 V 37 DQS3 157 V 66 V 186 CK097 V 217 DQ52 SS SS SS SS V V V V 8 128 DQ6 38 158 DQ30 67 187 98 DQ48 218 DQ53 SS SS DD DD V 9 DQ2 129 DQ7 39 DQ26 159 DQ31 68 NC 188 A0 99 DQ49 219 SS 10 DQ3 130 V 40 DQ27 160 V 69 V 189 V 100 V 220 CK2 SS SS DD DD SS V V 11 131 DQ12 41 161 NC 70 A10/AP 190 BA1 101 SA2 221 CK2 SS SS 2 V V 12 DQ8 132 DQ13 42 NC 162 NC 71 BA0 191 102 NC, TEST 222 DDQ SS V V V V 13 DQ9 133 SS 43 NC 163 SS 72 DDQ 192 RAS 103 SS 223 DM6 14 V 134 DM1 44 V 164 NC 73 WE 193 S0 104 DQS6 224 NC SS SS V V 15 DQS1 135 NC 45 NC 165 NC 74 CAS 194 105 DQS6 225 DDQ SS 16 DQS1 136 V 46 NC 166 V 75 V 195 ODT0 106 V 226 DQ54 SS SS DDQ SS 17 V 137 CK1 47 V 167 NC 76 S1196 107 DQ50 227 DQ55 SS SS NC/A13 18 NC 138 CK1 48 NC 168 NC 77 ODT1 197 V 108 DQ51 228 V DD SS V V V V V 19 NC 139 49 NC 169 78 198 109 229 DQ60 SS SS DDQ SS SS 20 V 140 DQ14 50 V 170 V 79 V 199 DQ36 110 DQ56 230 DQ61 SS SS DDQ SS V V 21 DQ10 141 DQ15 51 171 CKE1 80 DQ32 200 DQ37 111 DQ57 231 DDQ SS V V V V 22 DQ11 142 52 CKE0 172 81 DQ33 201 112 232 DM7 SS DD SS SS 23 V 143 DQ20 53 V 173 82 V 202 DM4 113 DQS7 233 NC SS DD NC SS 24 DQ16 144 DQ21 54 BA2 174 NC 83 DQS4 203 NC 114 DQS7 234 V SS V V V V 25 DQ17 145 55 NC 175 84 DQS4 204 115 235 DQ62 SS DDQ SS SS V V V 26 SS 146 DM2 56 DDQ 176 A12 85 SS 205 DQ38 116 DQ58 236 DQ63 27 DQS2 147 NC 57 A11 177 A9 86 DQ34 206 DQ39 117 DQ59 237 V SS V V V V 28 DQS2 148 58 A7 178 87 DQ35 207 118 238 VDDSPD SS DD SS SS 29 V 149 DQ22 59 V 179 A8 88 V 208 DQ44 119 SDA 239 SA0 SS DD SS 30 DQ18 150 DQ23 60 A5 180 A6 89 DQ40 209 DQ45 120 SCL 240 SA1 V 90 DQ41 210 SS NC = No Connect, RFU = Reserved for Future Use 1. Pin173 Pin174 are reserved for 2Gb/4Gb comp. base Unbuffered DIMM. 2. The TEST pin is reserved for bus analysis tools and is not connected on standard memory module products (DIMMs.)