MSC23S2640E-8BS8 (98.08.19) Semiconductor MSC23S2640E-8BS8 2,097,152 Word x 64 Bit SYNCHRONOUS DYNAMIC RAM MODULE (1BANK): DESCRIPTION The Oki MSC23S2640E-8BS8 is a fully decoded, 2,097,152 x 64bit synchronous dynamic random access memory composed of eight 16Mb DRAMs (2Mx8) in TSOP packages mounted with decoupling capacitors on a 168-pin glass epoxy Dual-in-Line Package supports any application where high density and large capacity of storage memory are required, like for example PCs or servers. FEATURES • • • • • • • • • • 2-Meg Word x 64-Bit (1Bank 8 Byte) organization 168-pin Dual Inline Memory Module All DQ Pins have 10Ω Damping Resister Single 3.3V power supply, ±0.3V tolerance Input :LVTTL compatible Output :LVTTL compatible Refresh : 4,096 cycles/64 ms Programmable data transfer mode • CAS latency (2, 3) • Burst length (1, 2, 4, 8, Full) • Data scramble (sequential, interleave) CBR auto-refresh, Self-refresh capability Serial Presence Detect (SPD) With EEPROM PRODUCT ORGANIZATION Product Name MSC23S2640E-8BS8 Operation Frequency (Max.) 125MHz Access Time (Max.) tAC2 tAC3 10.0ns 6.0ns Note. Specification are subject to change without notice. Page 1/11 MSC23S2640E-8BS8 (98.08.19) BLOCK DIAGRAM CKE0 /CS0 DQMB0 /CS2 DQMB2 DQM /CS CKE DQ0 DQ0 DQM /CS CKE DQ0 DQ16 3 1 DQ23 DQ7 DQ7 DQ7 DQMB3 DQMB1 DQ8 DQM /CS CKE DQ0 DQ15 DQ7 DQ24 DQM /CS CKE DQ0 DQ31 DQ7 2 4 DQMB4 DQMB6 DQ32 DQM /CS CKE DQ0 DQ39 DQ7 DQ48 DQM /CS CKE DQ0 DQ55 DQ7 7 5 DQMB5 DQMB7 DQ40 DQM /CS CKE DQ0 DQ47 DQ7 DQ56 DQM /CS CKE DQ0 DQ63 DQ7 6 8 Serial PD SDA WP 9 SCL A0 A1 A2 47KΩ SA0 SA1 SA2 1 3 2 4 5 CLK0 CLK1 7 CLK2 10pF 6 CLK3 10pF 8 3.3pF 3.3pF /RAS,/CAS,/WE A0-A11 1 á Vcc 8 Two Decoupling Capacitors per SDRAM Vss 0.1uF 0.33uF Note. The Value of all resistors is 10Ω expect WP. MODULE (Front) (Back) 1 85 OUTLINE 10 11 94 95 40 41 124 125 84 168 Page 2/11 MSC23S2640E-8BS8 (98.08.19) PIN CONFIGURATION Front side Pin No. Pin name 1 VSS 2 DQ0 3 DQ1 4 DQ2 5 DQ3 6 VCC 7 DQ4 8 DQ5 9 DQ6 10 DQ7 11 DQ8 12 VSS 13 DQ9 14 DQ10 15 DQ11 16 DQ12 17 DQ13 18 VCC 19 DQ14 20 DQ15 21 N.C 22 N.C 23 VSS 24 N.C 25 N.C 26 VCC 27 /WE 28 DQMB0 29 DQMB1 30 /CS0 31 N.C 32 VSS 33 A0 34 A2 35 A4 36 A6 37 A8 38 A10 39 N.C 40 VCC 41 VCC 42 CLK0 Pin Name VCC VSS CLK# /CS# CKE# A0-A10 A11 /RAS /CAS Back side Pin No. Pin name 85 VSS 86 DQ32 87 DQ33 88 DQ34 89 DQ35 90 VCC 91 DQ36 92 DQ37 93 DQ38 94 DQ39 95 DQ40 96 VSS 97 DQ41 98 DQ42 99 DQ43 100 DQ44 101 DQ45 102 VCC 103 DQ46 104 DQ47 105 N.C 106 N.C 107 VSS 108 N.C 109 N.C 110 VCC 111 /CAS 112 DQMB4 113 DQMB5 114 N.C 115 /RAS 116 VSS 117 A1 118 A3 119 A5 120 A7 121 A9 122 A11 (BA0) 123 N.C 124 VCC 125 CLK1 126 N.C Function Power Supply (3.3V) Ground (0V) System Clock Chip Select Clock Enable Address Bank Select Address Row Address Strobe Column Address Strobe Front side Pin No. Pin name 43 VSS 44 N.C 45 /CS2 46 DQMB2 47 DQMB3 48 N.C 49 VCC 50 N.C 51 N.C 52 N.C 53 N.C 54 VSS 55 DQ16 56 DQ17 57 DQ18 58 DQ19 59 VCC 60 DQ20 61 N.C 62 N.C 63 N.C 64 VSS 65 DQ21 66 DQ22 67 DQ23 68 VSS 69 DQ24 70 DQ25 71 DQ26 72 DQ27 73 VCC 74 DQ28 75 DQ29 76 DQ30 77 DQ31 78 VSS 79 CLK2 80 N.C 81 WP 82 SDA 83 SCL 84 VCC Pin Name /WE DQMB# DQ# WP SDA SCL SA# N.C Back side Pin No. Pin name 127 VSS 128 CKE0 129 N.C 130 DQMB6 131 DQMB7 132 N.C 133 VCC 134 N.C 135 N.C 136 N.C 137 N.C 138 VSS 139 DQ48 140 DQ49 141 DQ50 142 DQ51 143 VCC 144 DQ52 145 N.C 146 N.C 147 N.C 148 VSS 149 DQ53 150 DQ54 151 DQ55 152 VSS 153 DQ56 154 DQ57 155 DQ58 156 DQ59 157 VCC 158 DQ60 159 DQ61 160 DQ62 161 DQ63 162 VSS 163 CLK3 164 N.C 165 SA0 166 SA1 167 SA2 168 VCC Function Write Enable Data Input/Output Mask Data Input/Output Write Protect Data I/O for SPD CLK input for SPD Socket Position Address for SPD No Connection Page 3/11 MSC23S2640E-8BS8 (98.08.19) SERIAL PRESENCE DETECT Byte No. SPD Hex Value 0 80 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 32 33 34 35 36-61 62 63 64-71 72 08 04 0B 09 01 40 00 01 80 60 00 80 08 00 01 8F 02 06 01 01 00 06 C0 A0 00 00 14 14 14 30 04 20 10 20 10 00-00 12 2E 41,45,20,20,20,20,20,20 01 / 06 43,32,33,53,32,36,34,30,45, 2D,38,42,53,38,20,20,20,20 20, 20 91, 92 00-00 93-125 64 126 A5 127 FF-FF 128-255 73-90 Remark Notes Defines the number of bytes written into SPD memory Total number of bytes of SPD memory Fundamental memory type Number of rows Number of columns Number of module banks Data width of this assembly ... Data width continuation Voltage interface level Cycle time (CL=3) Access time from CLK (CL=3) DIMM configuration type Refresh rate / type Primary SDRAM width Error checking SDRAM width Minimum CLK delay Burst lengths supported Number of banks on each SDRAM /CAS latency /CS latency /WE latency SDRAM module attributes SDRAM device attributes : General Cycle time (CL=2) Access time from CLK (CL=2) Cycle time (CL=1) Access time from CLK (CL=1) Minimum ROW pulse width /RAS to /RAS bank delay /RAS to /CAS delay Minimum /RAS precharge time Density of each bank on module 128 byte Manufacturer’s part number C23S2640E-8BS8 256 byte SDRAM 11 rows 9 columns 1 bank 64 bits 0 LVTTL CL=3 tCC=8ns CL=3 tAC3=6ns Non Parity Normal / Self x8 tCCD: 1 CLK 1, 2, 4, 8, F 2 banks 2, 3 0 0 CL=2 tCC2=12ns CL=2 tAC2=10ns Not support Not support tRP=20ns tRRD=20ns tRCD=20ns tRAS=48ns 16MB Command and address signal input setup time 2ns Command and address signal input hold time 1ns Data signal input setup time 2ns Data signal input hold time 1ns R.F.U SPD data revision code 1.2 Checksum for byte 0-62 Manufacturer’s JEDEC ID code Manufacturing location Revision code R.F.U Intel specification frequency Intel specification /CAS latency Unused storage locations 100MHz CL=3 Page 4/11 MSC23S2640E-8BS8 (98.08.19) ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings Rating Symbol Value Unit Voltage on any pin relative to Vss VIN, VOUT -0.5 to VCC+0.5 V Vcc supply voltage Storage temperature Vcc, VccQ Tstg -0.5 to 4.6 - 55 to 125 V °C Power dissipation PD* 8 W Short circuit current Ios 50 mA Topr 0 to 70 °C Operating temperature *: Ta=25 u Recommended Operating Conditions Parameter Power supply voltage Input high voltage Input low voltage Symbol Vcc, VccQ VIH VIL Min. Typ. 3.0 2.0 -0.3 3.3 - (Voltages referenced to Vss = 0V) Max. Unit 3.6 VCC+0.3 0.8 V V V Capacitance Parameter Input capacitance (A0-A11, /RAS, /CAS, /WE) Input capacitance (/CS0, /CS2) Input capacitance (DQMB0-DQMB7) Input capacitance (CKE0) I/O capacitance (DQ0-DQ63) Input capacitance (CLK0, CLK2) (Vcc=3.3V ± 0.3V, Ta = 25°C f=1MHz) Symbol Max. Unit CIN1 49 pF CIN2 34 pF CIN3 22 pF CIN4 58 pF CI/O 25 pF CLK C 50 pF Page 5/11 MSC23S2640E-8BS8 (98.08.19) DC CHARACTERISTICS Parameter Input Leakage Current Output Leakage Current Output High Voltage Output Low Voltage Bank CKE ILI - - - -80 80 uA ILO - - - -10 10 uA VOH - - IOH = -2mA 2.4 - V VOL - - IOL = 2mA - 0.4 V - 680 mA 1, 2 - 920 mA 1, 2 tCC=min. - 320 mA 3 tCC=min. - 24 mA 2 tCC=min. - 360 mA 3 tCC=min. - 840 mA 1, 2 2 ICC1 Average Power Supply Current (Operating) Power Supply Current (Stand by) Average Power Supply Current (Clock Suspension) Average Power Supply Current (Active Stand by) Condition Symbol (VCC = 3.3V ± 0.3V, Ta = 0 to 70°C) Module Spec. Unit Note Others Min Max ICC1D ICC2 ICC3S ICC3 One Bank Active Both Banks Active CKE ≥ VIH CKE ≥ VIH Both CKE ≥ VIH Banks Precharge Both CKE ≤ VIL Banks Active One CKE ≥ VIH Banks Active Both CKE ≥ VIH Banks Active tCC=min. tRC=min No Burst tCC=min. tRC=min tRRD=min No Burst Power Supply Current (Burst) ICC4 Power Supply Current (Auto-Refresh) ICC5 One Bank Active CKE ≥ VIH tCC=min. tRC=min. - 640 mA Average Power Supply Current (Self-Refresh) ICC6 Both Banks Precharge CKE ≤ VIL tCC=min. - 16 mA Average Power Supply Current (Power down) ICC7 Both Banks Precharge CKE ≤ VIL tCC=min. - 16 mA NOTE: 1. 2. 3. Measured with the output open. The address and data can be changed once or left uncharged during one cycle. The address and data can be changed once or left unchanged during two cycles. Page 6/11 MSC23S2640E-8BS8 (98.08.19) MODE SET ADDRESS KEYS A6 0 0 0 0 1 1 1 1 /CAS Latency A5 A4 CL 0 0 Reserved 0 1 Reserved 1 0 2 1 1 3 0 0 Reserved 0 1 Reserved 1 0 Reserved 1 1 Reserved Note: Burst Type A3 BT 0 Sequential 1 Interleave A2 0 0 0 0 1 1 1 1 A1 0 0 1 1 0 0 1 1 Burst Length A0 BT=0 0 1 1 2 0 4 1 8 0 Reserved 1 Reserved 0 Reserved 1 Full Page BT=1 1 2 4 8 Reserved Reserved Reserved Reserved A7, A8, A9, A10 and A11 should stay "L" during mode set cycle. POWER ON SEQUENCE 1. With inputs in NOP state, turn on the power supply and start the system clock. 2. After the VCC voltage has reached the specified level, pause for 200µs or more with the input kept in NOP state. 3. Issue the precharge all bank command. 4. Apply a CBR auto-refresh eight or more times. 5. Enter the mode register setting command. Page 7/11 MSC23S2640E-8BS8 (98.08.19) AC CHARACTERISTIC Parameter Clock Cycle Time Access Time from Clock Symbol CL=3 CL=2 CL=3 (VCC = 3.3 ± 0.3V, Ta = 0 ~70°C) NOTE 1, 2 Module Spec. Unit Note Min. Max. tCC tAC 8 12 - 6 10 ns ns ns ns Clock "H" Pulse Time tCH 3 - ns Clock "L" Pulse Time Input Setup Time (CLK, ADD, DIN) Input Hold Time (CLK, ADD, DIN) Output Low Impedance Time from Clock Output High Impedance Time from Clock Output Hold from Clock /RAS Cycle Time /RAS Precharge Time /RAS Active Time tCL tSI tHI tOLZ tOHZ tOH tRC tRP tRAS 3 2 1 3 3 70 20 48 9 100,000 ns ns ns ns ns ns ns ns ns /RAS to /CAS Delay Time Write Recovery Time tRCD tWR 20 8 - ns ns Write Command Input Time from Output /RAS to /RAS Bank Active Delay Time Refresh Time Power-down Exit Set-up Time Input Level Transition Time tOWD tRRD tREF tPDE tT 20 20 10 - 64 3 ns ns ms ns ns /CAS to /CAS Delay Time (Min) Clock Disable Time from CKE Data Output High Impedance Time from DQM Data Input Mask Time from DQMB Data Input Time from Write Command Data Output High Inpedance Time Active Command Input Time from MODE ICCD ICKE IDOZ IDOD IDWD IROH IMRD NOTES: 1) 2) 3) 4) 5) 1 1 2 0 0 CL 3 3, 4 3, 4 Cycle Cycle Cycle Cycle Cycle Cycle Cycle AC measurements assume that tT=1ns. The reference level for timing of input signals is 1.4V. This parameter is measured with a load circuit equivalent to 1 TTL load and 50pF (RLoad is 50ohm). An access time is measured at 1.4V. If tT is longer than 1ns, the reference level for timing of input signals are VIH and VIL. 1.4v 50Ω OUTPUT 50pF OUTPUT LOAD Page 8/11 . MSC23S2640E-8BS8 (98.08.19) FUNCTION TRUTH TABLE (Table1) (1/2) Current State Idle Row Active Read Write Read with Auto Precharge Write with Auto Precharge /CS H L L L L L L L H L L L L L L H L L L L L L L H L L L L L L L H L L L L L L H L L L L L L /RAS X H H H L L L L X H H H L L L X H H H H L L L X H H H H L L L X H H H H L L X H H H H L L /CAS X H H L H H L L X H L L H H L X H H L L H H L X H H L L H H L X H H L L H L X H H L L H L /WE X H L X H L H L X X H L H L X X H L H L H L X X H L H L H L X X H L H L X X X H L H L X X BA X X BA BA BA BA X L X X BA BA BA BA X X X BA BA BA BA BA X X X BA BA BA BA BA X X X BA BA X BA X X X BA BA X BA X ADDR X X X CA RA A10 X OP Code X X CA, A10 CA, A10 RA A10 X X X X CA, A10 CA, A10 RA A10 X X X X CA, A10 CA, A10 RA A10 X X X X CA, A10 X RA, A10 X X X X CA, A10 X RA, A10 X Action NOP NOP 2 ILLEGAL 2 ILLEGAL Row Active 4 NOP 5 Auto-Refresh or Self-Refresh Mode Register write NOP NOP Read Write 2 ILLEGAL Precharge ILLEGAL NOP (Continue Row Active after Burst ends) NOP (Continue Row Active after Burst ends) Reserved Term Burst, start new Burst Read Term Burst, start new Burst Write 2 ILLEGAL Term Burst, execute Row Precharge ILLEGAL NOP (Continue Row Active after Burst ends) NOP (Continue Row Active after Burst ends) 2 ILLEGAL Term Burst, start new Burst Read Term Burst, start new Burst Write 2 ILLEGAL Term Burst, execute Row Precharge ILLEGAL NOP (Continue Burst to End and enter Row Precharge) NOP (Continue Burst to End and enter Row Precharge) 2 ILLEGAL 2 ILLEGAL ILLEGAL 2 ILLEGAL ILLEGAL NOP (Continue Burst to End and enter Row Precharge) NOP (Continue Burst to End and enter Row Precharge) 2 ILLEGAL 2 ILLEGAL ILLEGAL 2 ILLEGAL ILLEGAL Page 9/11 MSC23S2640E-8BS8 (98.08.19) FUNCTION TRUTH TABLE (Table1) (2/2) Current State Precharge Write Recovery Row Active Refresh Mode Resister Access /CS H L L L L L L H L L L L L L H L L L L L L H L L L L H L L L L /RAS X H H H L L L X H H H L L L X H H H L L L X H H L L X H H H L /CAS X H H L H H L X H H L H H L X H H L H H L X H L H L X H H L X /WE X H L X H L X X H L X H L X X H L X H L X X X X X X X H L X X BA X X BA BA BA BA X X X BA BA BA BA X X X BA BA BA BA X X X X X X X X X X X ADDR X X X CA RA A10 X X X X CA RA A10 X X X X CA RA A10 X X X X X X X X X X X Action NOP Idle after tRP NOP Idle after tRP 2 ILLEGAL 2 ILLEGAL 2 ILLEGAL 4 NOP ILLEGAL NOP NOP 2 ILLEGAL 2 ILLEGAL 2 ILLEGAL 2 ILLEGAL ILLEGAL NOP Row Active after tRCD NOP Row Active after tRCD 2 ILLEGAL 2 ILLEGAL 2 ILLEGAL 2 ILLEGAL ILLEGAL NOP Idle after tRC NOP Idle after tRC ILLEGAL ILLEGAL ILLEGAL NOP NOP ILLEGAL ILLEGAL ILLEGAL Æ Æ Æ Æ ABBREVIATIONS RA = Row Address CA = Column Address BA = Bank Address AP = Auto Precharge NOP = No Operation command Notes: 1. All inputs will be enabled when CKE is set high for at least 1 cycle prior to the inputs. 2. Illegal to bank in specified state, but may be legal in some cases depending on the state of bank selection. 3. Satisfy the timing of tCCD and tWR to prevent bus contention. 4. NOP to bank precharging or in idle state. Precharges activated bank by BA or A10. 5. Illegal if any bank is not idle. Page 10/11 MSC23S2640E-8BS8 (98.08.19) FUNCTION TRUTH TABLE (CKE) (Table2) Current State (n) Self Refresh Power Down All Banks idle (ABI) Any State Other than Listed Above 6 CKEn-1 H L L L L L L H L L L L L L H H H H H H H H L H H L L CKEn X H H H H H L X H H H H H L H L L L L L L L L H L H L /CS X H L L L L X X H L L L L X X H L L L L L L X X X X X /RAS X X H H H L X X X H H H X X X X H H H L L L X X X X X /CAS X X H H L X X X X H H L X X X X H H L H L L X X X X X /WE X X H L X X X X X H L X X X X X H L X L H L X X X X X ADDR X X X X X X X X X X X X X X X X X X X X X X X X X X X Action INVALID Exit Self Refresh ABI Exit Self Refresh ABI ILLEGAL ILLEGAL ILLEGAL NOP (Maintain Self Refresh) INVALID Exit Power Down ABI Exit Power Down ABI ILLEGAL ILLEGAL 6 ILLEGAL NOP (Continue power down mode) Refer to Table 1 Enter Power Down Enter Power Down ILLEGAL ILLEGAL ILLEGAL Enter Self Refresh ILLEGAL NOP Refer to Operations in Table 1 Begin Clock Suspend Next Cycle Enable Clock of Next Cycle Continue Clock Suspension Æ Æ Æ Æ Notes: 6. Power-down and self refresh can be entered only when all the banks are in an idle state. Page 11/11