HANBit HDD32M72B9 DDR SDRAM Module 256Mbyte (32Mx72bit), based on32Mx8,4Banks, 8K Ref., ECC Unbuffered SO-DIMM Part No. HDD32M72B9 GENERAL DESCRIPTION The HDD32M72B9 is a 32M x 72 bit Double Data Rate(DDR) Synchronous Dynamic RAM high-density memory module. The module consists of nine CMOS 32M x 8 bit with 4banks DDR SDRAMs in 66pin TSOP-II 400mil packages and 2K EEPROM in 8-pin TSSOP package on a 200-pin glass-epoxy. Four 0.1uF decoupling capacitors are mounted on the printed circuit board in parallel for each DDR SDRAM. The HDD32M72B9 is a SO-DIMM(Small Outline Dual in line Memory Module) .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 latencies and burst lengths allows the same device to be useful for a variety of high bandwidth, high performance m emory system applications. All module components may be powered from a single 2.5V DC power supply and all inputs and outputs are SSTL_2 compatible. FEATURES • Part Identification HDD32M72B9 – 16B : 166MHz (CL=2.5) HDD32M72B9 – 13A : 133MHz (CL=2) HDD32M72B9 – 13B : 133MHz (CL=2.5) • 256MB(32Mx64) Unbuffered DDR SO-DIMM based on 32Mx8 DDR SDRSM with ECC • 2.5V ± 0.2V VDD and VDDQ power supply • Auto & self refresh capability (8192 Cycles/64ms) • All input and output are compatible with SSTL_2 interface • Data(DQ), Data strobes and write masks latched on the rising and falling edges of the clock • All Addresses and control inputs except Data(DQ), Data strobes and Data masks latched on the rising edges of the clock • MRS cycle with address key programs - Latency (Access from column address) : 2, 2.5 - Burst length : 2, 4, 8 - Burst type : Sequential & Interleave • Data(DQ), Data strobes and write masks latched on the rising and falling edges of the clock • All Addresses and control inputs except Data(DQ), Data strobes and Data masks latched on the rising edges of the clock • The used device is 8M x 8bit x 4Banks DDR SDRAM • Auto & Self refresh, 7.8us refresh interval (8K/64ms refresh) • Serial Presence detect with EEPROM URL : www.hbe.co.kr REV 1.0 (July. 2003) 1 HANBit Electronics Co.,Ltd. HANBit HDD32M72B9 PIN ASSIGNMENT PIN Front PIN Back PIN Frontl PIN Back PIN Front PIN Back 1 VREF 2 VREF 67 DQ27 68 DQ31 133 DQS4 134 DM4 3 VSS 4 VSS 69 VDD 70 VDD 135 DQ34 136 DQ38 5 DQ0 6 DQ4 71 CB0 72 CB4 137 VSS 138 VSS 7 DQ1 8 DQ5 73 CB1 74 CB5 139 DQ35 140 DQ39 9 VDD 10 VDD 75 Vss 76 Vss 141 DQ40 142 DQ44 11 DQS0 12 DM0 77 DQS8 78 DM8 143 VDD 144 VDD 13 DQ2 14 DQ6 79 CB2 80 CB6 145 DQ41 146 DQ45 15 VSS 16 VSS 81 VDD 82 VDD 147 DQS5 148 DM5 17 DQ3 18 DQ7 83 CB3 84 CB7 149 VSS 150 VSS 19 DQ8 20 DQ12 85 NC 86 NC(/RESET) 151 DQ42 152 DQ46 21 VDD 22 VDD 87 VSS 88 VSS 153 DQ43 154 DQ47 23 DQ9 24 DQ13 89 CK2 90 VSS 155 VDD 156 VDD 25 DQS1 26 DM1 91 /CK2 92 VDD 157 VDD 158 /CK1 27 VSS 28 VSS 93 VDD 94 VDD 159 VSS 160 CK1 29 DQ10 30 DQ14 95 CKE1 96 CKE0 161 VSS 162 VSS 31 DQ11 32 DQ15 97 NC(A13) 98 NC (BA2) 163 DQ48 164 DQ52 33 VDD 34 VDD 99 A12 100 A11 165 DQ49 166 DQ53 35 CK0 36 VDD 101 A9 102 A8 167 VDD 168 VDD 37 /CK0 38 VSS 103 VSS 104 VSS 169 DQS6 170 DM6 39 VSS 40 VSS 105 A7 106 A6 171 DQ50 172 DQ54 41 DQ16 42 DQ20 107 A5 108 A4 173 VSS 174 VSS 43 DQ17 44 DQ21 109 A3 110 A2 175 DQ51 176 DQ55 45 VDD 46 VDD 111 A1 112 A0 177 DQ56 178 DQ60 47 DQS2 48 DM2 113 VDD 114 VDD 179 VDD 180 VDD 49 DQ18 50 DQ22 115 A10/AP 116 BA1 181 DQ57 182 DQ61 51 VSS 52 VSS 117 BA0 118 /RAS 183 DQS7 184 DM7 53 DQ19 54 DQ23 119 /WE 120 /CAS 185 VSS 186 VSS 55 DQ24 56 DQ28 121 /CS0 122 NC 187 DQ58 188 DQ62 57 VDD 58 VDD 123 NC 124 NC 189 DQ59 190 DQ63 59 DQ25 60 DQ29 125 VSS 126 VSS 191 VDD 192 VDD 61 DQS3 62 DM3 127 DQ32 128 DQ36 193 SDA 194 *SA0 63 VSS 64 VSS 129 DQ33 130 DQ37 195 SCL 196 *SA1 65 DQ26 66 DQ30 131 VDD 132 VDD 197 VDDSPD 198 *SA2 199 VDDID 200 NC *These pins should be NC in the system which does not support SPD PIN PIN DESCRIPTION PIN PIN DESCRIPTION A0~A12 Address input VDD Power supply(2.5V) BA0~BA1 VDDQ Power supply for DQs(2.5V) VREF Power supply for reference DQS0~DQS8 Bank Select Address Data input/output (Check Bit Data In/Out) Data Strobe input/output VDDSPD Serial EEPROM Power supply(2.3V~3.3V) DM0~DM8 Data-in Mask VSS Ground CK0~CK2,/CK0~/CK2 Clock input SA0~SA2 Address in EEPROM CKE0~CKE1 Clock enable input SDA Serial data I/O /CS0 Chip Select input SCL Serial clock /RAS, /CAS Row / Column Address strobe WP Write protection NC No connection VDDID VDD identification flag DQ0~DQ63(CB0~CB7) URL : www.hbe.co.kr REV 1.0 (July. 2003) 2 HANBit Electronics Co.,Ltd. HANBit HDD32M72B9 FUNCTIONAL BLOCK DIAGRAM URL : www.hbe.co.kr REV 1.0 (July. 2003) 3 HANBit Electronics Co.,Ltd. HANBit HDD32M72B9 PIN FUNCTION DESCRIPTION Pin CK, /CK Name Input Function CK and CK are differential clock inputs. All address and control input signals are sam-pled on the positive edge of CK and negative edge of CK. Output (read) data Clock is referenced to both edges of CK. Internal clock signals are derived from CK/CK. CKE HIGH activates, and CKE LOW deactivates internal clock signals, and device input buffers and output drivers. Deactivating the clock provides PRECHARGE POWER-DOWN and SELF REFRESH operation (all banks idle), or ACTIVE POWER-DOWN(row ACTIVE in any bank). CKE is synchronous for all functions CKE Clock Enable except for disabling outputs, which is achieved asynchronously. Input buffers, excluding CK, CK and CKE are disabled during power-down and self refresh modes, providing low standby power. CKE will recognizean LVCMOS LOW level prior to VREF being stable on power-up. CS enables(registered LOW) and disables(registered HIGH) the command decoder. All commands are masked when CS is registered HIGH. CS provides for external /CS Chip Select bank selection on systems with multiple banks. CS is considered part of the command code. Row/column addresses are multiplexed on the same pins. A0 ~ A12 Address BA0 ~ BA1 Bank select address /RAS Row address strobe /CAS Column strobe /WE Write enable DQS0 ~ 8 Data Strobe Row address : RA0 ~ RA12, Column address : CA0 ~ CA9 BA0 and BA1 define to which bank an ACTIVE, READ, WRITE or PRE-CHARGE command is being applied. Latches row addresses on the positive going edge of the CLK with /RAS low. address Enables row access & precharge. Latches column addresses on the positive going edge of the CLK with /CAS low. Enables column access. Enables write operation and row precharge. Latches data in starting from /CAS, /WE active. Output with read data, input with write data. Edge-aligned with read data, centered in write data. Used to capture write data. DM is an input mask signal for write data. Input data is masked when DM is sampled HIGH along with that input data during a WRITE access. DM is sampled DM0~8 Input Data Mask on both edges of DQS. DM pins include dummy loading internally, to matches the DQ and DQS load-ing. DQ0 ~ 63 Data input/output Data inputs/outputs are multiplexed on the same pins. CB0 ~ 7 Check Bit Check Bits for ECC data are multiplexed on the same pins. VDDQ Supply DQ Power Supply : +2.5V ± 0.2V. VDD Supply Power Supply : +2.5V ± 0.2V (device specific). VSS Supply DQ Ground. VREF Supply SSTL_2 reference voltage. VDDSPD Supply Serial EEPROM Power Supply : 3.3v VDDID URL : www.hbe.co.kr REV 1.0 (July. 2003) VDD identification Flag 4 HANBit Electronics Co.,Ltd. HANBit HDD32M72B9 ABSOLUTE MAXIMUM RATINGS PARAMETER Voltage on any pin relative to Vss SYMBOL VIN, VOUT RATING -0.5 ~ 3.6 UNTE V Voltage on V DD supply relative to Vss VDD -1.0 ~ 3.6 V Voltage on V DDQ supply relative to Vss VDDQ -0.5 ~ 3.6 V Storage temperature TSTG -55 ~ +150 °C Power dissipation PD 8.0 W Short circuit current IOS 50 mA Notes : Permanent device damage may occur if ABSOLUTE MAXIUM 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 Vss = 0V, TA = 0 to 70°C) ) PARAMETER Supply Voltage I/O Supply Voltage I/O Reference Voltage SYMBO MIN MAX UNIT NOTE L VDD 2.3 2.7 V VDDQ 2.3 2.7 V VREF VDDQ/2-50mV VDDQ/2+50mV V 1 VTT VREF – 0.04 VREF + 0.04 V 2 Input High Voltage VIH (DC) VREF + 0.15 VREF + 0.3 V 4 Input Low Voltage VIL (DC) -0.3 VREF - 0.15 V 4 Input Voltage Level, CK and /CK inputs VIN (DC) -0.3 VDDQ + 0.3 V Input Differential Voltage, CK and /CK inputs I/O Termination Voltage(system) VID (DC) 0.3 VDDQ + 0.6 V 3 Input leakage current I LI -2 2 uA 5 Output leakage current I OZ -5 5 uA Output High current (Normal Strenth driver I OH -16.8 I OL 16.8 I OH -9 I OL 9 mA (VOUT = VTT + 0.84V) Output Low current (Normal Strenth driver (VOUT = VTT - 0.84V) Output High current (Normal Strenth driver (VOUT = VTT + 0.45V) Output Low current (Normal Strenth driver mA (VOUT = VTT - 0.45V) Notes : 1. Includes ± 25mV margin for DC offset on VREF, and a combined total of ± 50mV margin for all AC noise and DC offset on VREF,bandwidth limited to 20MHz. The DRAM must accommodate DRAM current spikes on VREF and internal DRAM noise coupled TO VREF, both of which may result in VREF noise. VREF should be de-coupled with an inductance of ¡Â3nH. 2. VTT is not applied directly to the device. V TT is a system supply for signal termination resistors, is expected to be set equal to VREF, and must track variations in the DC level of VREF 3. VID 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*VDDQ 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. URL : www.hbe.co.kr REV 1.0 (July. 2003) 5 HANBit Electronics Co.,Ltd. HANBit HDD32M72B9 DC CHARACTERISTICS (Recommended operating condition unless otherwise noted, VDD = 2.5V, T =25°C) Symbol 16B(DDR333@CL=2.5) 13A(DDR266@CL=2) 13B(DDR266@CL=2.5) Unit IDD0 810 720 720 mA IDD1 1080 990 990 mA IDD2P 27 27 27 mA IDD2F 225 180 180 mA IDD2Q 80 165 165 mA IDD3P 315 270 270 mA IDD3N 495 405 405 mA IDD4R 1,530 1,260 1,260 mA IDD4W 1,530 1,260 1,260 mA IDD5 1,620 1,480 1,480 mA Normal 27 27 27 mA Low power 14 14 14 mA 2,920 2,520 2,520 mA Notes IDD6 IDD7A Optional Module IDD was calculated on the basis of component I DD and can be differently measured according to DQ loading cap. AC OPERATING CONDITIONS PARAMETER STMBOL 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 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 Notes: 1. 2. 3. VID is the magnitude of the difference between the input level on CK and the input on CK*. The value of VIX is expected to equal 0.5* VDDQ of the transmitting device and must track variations in the DC level of the same These parameters should be tested at the pim on actual components and may be checked at either the pin or the pad in simula-tion. the AC and DC input specificatims are refation to a Vref envelope that has been bandwidth limited 20MHz. AC OPERATING TEST CONDITIONS PARAMETER 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+0.35/VREF V Input timing measurement reference level VREF V Output timing measurement reference level VTT V See Load Circuit V Input signal minimum slew rate Input Levels(VIH/VIL) Output load condition URL : www.hbe.co.kr REV 1.0 (July. 2003) 6 NOTE HANBit Electronics Co.,Ltd. HANBit CAPACITANCE HDD32M72B9 (VDD = min to max, VDDQ = 2.5V to 2.7V, TA = 25°C, f = 100MHz) DESCRIPTION SYMBOL MIN MAX UNITS Input capacitance(A0~A12, BA0~BA1, /RAS, /CAS,/WE) CIN1 44 pF Input capacitance(CKE0,CKE1) CIN2 44 pF Input capacitance(/CS0) CIN3 42 pF Input capacitance(CK0~CK2, /CK0~/CK2) CIN4 38 pF Input capacitance(DM0~DM8) CIN5 9 pF Data input/output capacitance (DQ0 ~ DQ63, DQS0~DQS7) COUT1 9 pF Input capacitance(CB0~CB8) COUT2 9 pF URL : www.hbe.co.kr REV 1.0 (July. 2003) 7 HANBit Electronics Co.,Ltd. HANBit HDD32M72B9 AC CHARACTERISTICS (These AC charicteristics were tested on the Component) PARAMETER DDR333 DDR266A DDR266B -16A -13A -13B SYMBOL MIN MAX MIN MAX MIN UNIT Row cycle time tRC 60 65 65 ns Refresh row cycle time tRFC 72 75 75 ns Row active time tRAS 42 /RAS to /CAS delay tRCD 18 20 20 ns Row precharge time tRP 18 20 20 ns Row active to Row active delay tRRD 12 15 15 ns Write recovery time tWR 15 15 5 tCK Last data in to Read command tCDLR 1 1 1 tCK Col. address to Col. address delay tCCD 1 1 1 tCK CL=2.0 Clock cycle time 70K 45 120K 45 NOTE MAX 120K ns 7.5 12 7.5 12 10 12 ns 5 6 12 7.5 12 7.5 12 ns 5 tCK CL=2.5 Clock high level width tCH 0.45 0.55 0.45 0.55 0.45 0.55 tCK Clock low level width 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 tWPREH 0.25 0.25 0.25 tCK DQS-in falling edge to CK rising-setup time tDSS 0.2 0.2 0.2 tCK DQS-in falling edge to 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 tCK DQS-in cycle time 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 075 0.9 0.9 ns 6 Address and Control Input hold time(slow) tIS 0.8 10 1.0 ns 6 Address and Control Input hold time(slow) tIH 0.8 1.0 1.0 ns 6 Data-out high impedance time from CK/CK* tHZ -0.7 +0.7 -0.75 +0.75 -0.75 +0.75 ns Data-out low impedance time from CK/CK* tLZ -0.7 +0.7 -0.75 +0.75 -0.75 +0.75 ns tSL(I) 0.5 DQS-out access time from CK/CK* Input Slew Rate(for input only pins) URL : www.hbe.co.kr REV 1.0 (July. 2003) 8 1.1 0.9 0.5 1.1 0.9 0.5 1.1 5 2 tCK V/ns HANBit Electronics Co.,Ltd. 6 HANBit HDD32M72B9 Input Slew Rate(for I/O pins) tSL(IO) 0.5 Output Slew Rate (x4, x8) tSL(O) 1.0 4.5 1.0 4.5 1.0 4.5 Output Slew Rate Matching Ratio(rise to fall) tSLMR 0.67 1.5 0.67 1.5 0.67 1.5 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 DQ & DM input pulse width tDIPW 1.75 1.75 1.75 ns Power down exit time tPDEX 6 7.5 7.5 ns Control & Address input pulse width tIPW 2.2 2.2 2.2 ns Exit self refresh to bank active command tXSA 80 75 75 ns Exit self refresh to non-read command tXSNR 75 75 75 ns Exit self refresh to read command tXSRD 200 200 200 tCK Refresh interval time TREFI 7.8 tHPmi n -tQHS tCLmi n or tCHS 7.8 tHPmi n -tQHS tCLmi n or tCHS 7.8 tHPmi n -tQHS tCLmi n or tCHS us 1 ns 5 Output DQS valid window TQH Clock half period THP 0.5 0.55 Data hold skew factor TQHS DQS write postamble time TWPST 0.4 TRAP 20 TDAL (tWR/t CK) + (tRP/t CK) 0.5 0.75 0.6 0.4 0.6 0.4 V/ns 7 V/ns 10 4 ns 0.75 ns 0.6 tCK 3 1CK 11 Active to Read with Auto precharge 20 20 (tWR/t CK) (tWR/t CK) + + (tRP/t (tRP/t CK) CK) command Autoprecharge write recovery + Precharge time Notes : 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 previou s 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 acc ordingly. 4. 5. A write command can be applied with tRCD satisfied after this command. For registered DIMMs, tCL and tCH are ¡Ã 45% of the period including both the half period jitter ( tJIT(HP)) of the PLL and the half period jitter due to crosstalk (tJIT(crosstalk)) on the DIMM. 6. Input Setup/Hold Slew Rate Derating Input Setup/Hold Slew Rate .tIS .tIH (V/ns) (ps) (ps) URL : www.hbe.co.kr REV 1.0 (July. 2003) 0.5 0 0 0.4 +50 +50 0.3 +100 +100 9 HANBit Electronics Co.,Ltd. HANBit HDD32M72B9 This derating table is used to increase t IS /t IH in the case where the input slew rate is below 0.5V/ns. I nput 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. Input 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 /t DH 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. 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 (V/ns) (ps) (ps) 0 0 0 ±0.25 +50 +50 ±0.5 +100 +100 This derating table is used to increase tDS/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. URL : www.hbe.co.kr REV 1.0 (July. 2003) 10 HANBit Electronics Co.,Ltd. HANBit HDD32M72B9 SIMPLIFIED COMMAND TRUTH TABLE COMMAND CK E n-1 CK E n /CS /R A S /C A S /WE DM X L L L L X OP code 1,2 X L L L L X OP code 1,2 L L L H X X L H H H H X X X X X L L H H Register Extended MRS H Register Mode register set H Auto refresh Refresh Self refresh Entry Exit Bank active & row addr. Read & Auto column disable address Auto precharge eable Write & column address (V=VALID, X=DON ¡Ç T CARE, H=LOGIC HIGH, L=LOGIC LOW) H H L L H H X H X L H L Auto precharge Bank selection e All banks Precharge power X down mode H X X Entry H L Exit L H Entry Exit V L H L H L DM H No operation command H L H L H H L L L H L 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 H X X X L H H H 3 3 3 Address V 4 (A0 ~A9) 4 Column 4 Address X X NOTE 3 Column L (A0 ~ A9) H X A11 A9~A0 Row address L X L H Precharg X H H enable Burst Stop H A10/ AP H precharge disable active power down V precharge Auto Clock suspend or X BA 0,1 X V L X H 4,6 7 X 5 X X X X X V X X X 8 9 9 (V=Valid, X=Don't care, H=Logic high, L=Logic low) Notes : 1. OP Code : Operand code A0 ~ A11 & BA0 ~ BA1 : Program keys. (@ MRS) 2. MRS can be issued only at all banks precharge state. A new command can be issued after 2 CLK cycles of MRS. 3. Auto refresh functions are as same as 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 BA1 are "Low" at read, write, row active and precharge, bank A is selected. If both BA0 is "Low" and BA1 is "High" at read, write, row active and precharge, bank B is selected. If both BA0 is "High" and BA1 is "Low" at read, write, row active and precharge, bank C is selected. If both BA0 and BA1 are "High" at read, write, row active and precharge, bank D is selected. If A10/AP is "High" at row precharge, BA0 and BA1 is ignored and all banks are selected. 5. If A10/AP is "High" at row precharge, BA0 and BA1 are ignored and all banks are selected.. 6. During burst read or 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 tRP 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. URL : www.hbe.co.kr REV 1.0 (July. 2003) 11 HANBit Electronics Co.,Ltd. HANBit HDD32M72B9 PACKAGING INFORMATION Unit : mm Front – Side Z PCB 두 께 Y : 1.0 ± 0.1mm ORDERING INFORMATION Part Number Density Org. HDD32M72B9-16B 256MByte 32M x 72 HDD32M72B9-13A 256MByte 32M x 72 HDD32M72B9-13B 256MByte 32M x 72 URL : www.hbe.co.kr REV 1.0 (July. 2003) Package 200PIN SO-DIMM 200PIN SO-DIMM 200PIN SO-DIMM 12 Ref. Vcc MODE MAX.frq 8K 2.5V DDR 166MHz/CL2.5 8K 2.5V DDR 133MHz/CL2 8K 2.5V DDR 133MHz/CL2.5 HANBit Electronics Co.,Ltd.