ESMT M13S64164A DDR SDRAM 1M x 16 Bit x 4 Banks Double Data Rate SDRAM Features z JEDEC Standard z Internal pipelined double-data-rate architecture, two data access per clock cycle z Bi-directional data strobe (DQS) z On-chip DLL z Differential clock inputs (CLK and CLK ) z DLL aligns DQ and DQS transition with CLK transition z Quad bank operation z CAS Latency : 2, 2.5, 3 z Burst Type : Sequential and Interleave z Burst Length : 2, 4, 8 z All inputs except data & DM are sampled at the rising edge of the system clock(CLK) z Data I/O transitions on both edges of data strobe (DQS) z DQS is edge-aligned with data for reads; center-aligned with data for WRITE z Data mask (DM) for write masking only z VDD = 2.3V ~ 2.7V, VDDQ = 2.3V ~ 2.7V z Auto & Self refresh z 64ms refresh period, 4K cycle z SSTL-2 I/O interface z 66pin TSOPII and 60 ball BGA package Ordering Information: PRODUCT NO. MAX FREQ M13S64164A -5TG 200MHz M13S64164A -6TG 166MHz M13S64164A -5BG 200MHz M13S64164A -6BG 166MHz Elite Semiconductor Memory Technology Inc. VDD PACKAGE COMMENTS 2.5V 66TSOPII Pb-free 2.5V BGA Pb-free Publication Date : Jun. 2009 Revision : 1.4 1/48 ESMT M13S64164A Functional Block Diagram CLK CLK CKE Clock Generator Bank D Bank C Bank B Mode Register & Extended Mode Register Row Address Buffer & Refresh Counter Row Decoder Address Bank A CAS WE DM Column Decoder Input & Output Buffer RAS Column Address Buffer & Refresh Counter Latch Circuit CS Control Logic Command Decoder Sense Amplifier Data Control Circuit CLK, CLK DLL DQ DQS DQS Pin Arrangement 60-Ball BGA Assignment (Top View) x16 VDD DQ 0 VDDQ DQ 1 DQ 2 VSSQ DQ 3 DQ 4 VDDQ DQ 5 DQ 6 VSSQ DQ 7 NC VDDQ LDQS NC VDD NC LDM WE CAS RAS CS NC BA0 BA1 A10/AP A0 A1 A2 A3 VDD x16 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 66 PIN TSOP(II) (400mil x 875mil) (0.65 mm PIN PITCH) Elite Semiconductor Memory Technology Inc. 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 VSS DQ15 VSSQ DQ14 DQ13 VDDQ DQ12 DQ11 VSSQ DQ10 DQ 9 VDDQ DQ 8 NC VSSQ UDQS NC VREF VSS UDM CLK CLK CKE NC NC A11 A9 A8 A7 A6 A5 A4 VSS 1 2 3 7 8 9 VSSQ DQ15 VSS VDD DQ0 VDDQ B DQ14 VDDQ DQ13 DQ2 VSSQ DQ1 C DQ12 VSSQ DQ11 DQ4 VDDQ DQ3 D DQ10 VDDQ DQ9 DQ6 VSSQ DQ5 E DQ8 VSSQ UDQS LDQS VDDQ DQ7 F VREF VSS UDM LDM VDD NC G CLK CLK WE CAS H NC CKE RAS CS J A11 A9 BA1 BA0 K A8 A7 A0 A10/AP L A6 A5 A2 A1 M A4 VSS VDD A3 A Publication Date : Jun. 2009 Revision : 1.4 2/48 ESMT M13S64164A Pin Description (M13S64164A) Pin Name A0~A11, BA0,BA1 DQ0~DQ15 Function Pin Name Function Address inputs - Row address A0~A11 - Column address A0~A7 A10/AP : AUTO Precharge BA0, BA1 : Bank selects (4 Banks) LDM, UDM DM is an input mask signal for write data. LDM corresponds to the data on DQ0~DQ7; UDM correspond to the data on DQ8~DQ15. Data-in/Data-out CLK, CLK RAS Row address strobe CAS Column address strobe WE Write enable VDDQ Supply Voltage for GDQ VSS Ground VSSQ Ground for DQ VDD Power VREF Reference Voltage for SSTL-2 Bi-directional Data Strobe. LDQS corresponds to the data on DQ0~DQ7; UDQS correspond to the data on DQ8~DQ15. NC No connection LDQS, UDQS Elite Semiconductor Memory Technology Inc. CKE Clock input CS Clock enable Chip select Publication Date : Jun. 2009 Revision : 1.4 3/48 ESMT M13S64164A Absolute Maximum Rating Parameter Symbol Value Unit Voltage on any pin relative to VSS VIN, VOUT -0.5 ~ 3.6 V Voltage on VDD supply relative to VSS VDD -1.0 ~ 3.6 V Voltage on VDDQ supply relative to VSS VDDQ -1.0 ~ 3.6 V Storage temperature TSTG -55 ~ +150 °C Power dissipation PD 1 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 recommend operation condition. Exposure to higher than recommended voltage for extended periods of time could affect device reliability. DC Operation Condition & Specifications DC Operation Condition Recommended operating conditions (Voltage reference to VSS = 0V, TA = 0 to 70 °C ) Parameter Symbol Min Max Unit Supply voltage VDD 2.3 2.7 V I/O Supply voltage VDDQ 2.3 2.7 V I/O Reference voltage VREF 0.49*VDDQ 0.51*VDDQ V 1 I/O Termination voltage (system) VTT VREF - 0.04 VREF + 0.04 V 2 Input logic high voltage VIH (DC) VREF + 0.15 VDDQ + 0.3 V Input logic low voltage VIL (DC) -0.3 VREF - 0.15 V Input Voltage Level, CLK and CLK inputs VIN (DC) -0.3 VDDQ + 0.3 V Input Differential Voltage, CLK and CLK inputs VID (DC) 0.36 VDDQ + 0.6 V 3 II -2 2 μA 4 Output leakage current IOZ -5 5 μA Output High Current (Normal strength driver) (VOUT =VDDQ-0.373V, min VREF, min VTT) IOH -16.8 mA Output Low Current (Normal strength driver) (VOUT = 0.373V) IOL +16.8 mA Output High Current (Weak strength driver) (VOUT =VDDQ-0.763V, min VREF, min VTT) IOH -9 mA Output Low Current (Weak strength driver) (VOUT = 0.763V) IOL +9 mA Input leakage current Note Notes: 1. VREF is expected to be equal to 0.5* VDDQ of the transmitting device, and to track variations in the DC level of the same. Peak-to-peak noise on VREF may not exceed 2% of the DC value. 2. VTT is not applied directly to the device. VTT is 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 CLK and the input level on CLK . 4. VIN = 0V to VDD, All other pins are not tested under VIN = 0V. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 4/48 ESMT M13S64164A DC Specifications Parameter Symbol Version Test Condition -5 -6 Unit Note Operation Current (One Bank Active) IDD0 tRC = tRC (min), tCK = tCK (min), Active – Precharge 110 100 mA Operation Current (One Bank Active) IDD1 Burst Length = 2, tRC = tRC (min), CL= 2.5, IOUT = 0mA, Active-Read-Precharge 130 110 mA Precharge Power-down Standby Current IDD2P CKE ≤ VIL(max), tCK = tCK (min), All banks idle 10 10 mA Idle Standby Current IDD2N CKE ≥ VIH(min), CS ≥ VIH(min), tCK = tCK (min) 70 70 mA Active Power-down Standby Current IDD3P All banks ACT, CKE ≤ VIL(max), tCK = tCK (min) 20 15 mA Active Standby Current IDD3N One bank; Active-Precharge, tRC = tRAS(max), tCK = tCK (min) 90 80 mA Operation Current (Read) IDD4R Burst Length = 2, CL= 2.5 , tCK = tCK (min), IOUT = 0mA 180 160 mA Operation Current (Write) IDD4W Burst Length = 2, CL= 2.5 , tCK = tCK (min) 180 160 mA 140 120 mA 5 5 mA 235 215 mA Auto Refresh Current IDD5 tRC ≥ tRFC(min) Self Refresh Current IDD6 CKE ≤ 0.2V Operation Current (4 bank interleaving) IDD7 Burst Length = 4, tRC = tRC (min), IOUT = 0mA 1 Note: 1. Enable on-chip refresh and address counters. AC Operation Conditions & Timing Specification AC Operation Conditions Parameter 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 Different Voltage, CLK and CLK inputs VID(AC) Input Crossing Point Voltage, CLK and CLK inputs VIX(AC) Max Unit Note V VREF - 0.31 V 0.7 VDDQ+0.6 V 1 0.5*VDDQ-0.2 0.5*VDDQ+0.2 V 2 Note1. VID is the magnitude of the difference between the input level on CLK and the input on CLK . 2. 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. Input / Output Capacitance (VDD = 2.3V~2.7V, VDDQ=2.3V~2.7V, TA = 25 °C , f = 1MHz) Parameter Symbol Min Max Unit CIN1 2.5 3.5 pF Input capacitance (CLK, CLK ) CIN2 2.5 3.5 pF Data & DQS input/output capacitance COUT 4.0 5.5 pF Input capacitance (DM) CIN3 4.0 5.5 pF Input capacitance (A0~A11, BA0~BA1, CKE, CS , RAS , CAS , WE ) Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 5/48 ESMT M13S64164A AC Operating Test Conditions Parameter Value Unit 0.5*VDDQ V Input signal maximum peak swing 1.5 V Input signal minimum slew rate 1.0 V/ns VREF+0.31/VREF-0.31 V Input timing measurement reference level VREF V Output timing reference level VTT V Input reference voltage for clock (VREF) Input levels (VIH/VIL) AC Timing Parameter & Specifications (VDD = 2.3V~2.7V, VDDQ=2.3V~2.7V, TA =0 °C to 70 °C ) Parameter Symbol CL2 Clock Period CL2.5 tCK CL3 -5 -6 min max min max 7.5 12 7.5 12 6.0 12 6.0 12 5.0 8 6.0 10 Unit ns Access time from CLK/ CLK tAC -0.7 +0.7 -0.7 +0.7 ns CLK high-level width tCH 0.45 0.55 0.45 0.55 tCK CLK low-level width tCL 0.45 0.55 0.45 0.55 tCK Data strobe edge to clock edge tDQSCK -0.6 +0.6 -0.6 +0.6 ns Clock to first rising edge of DQS delay tDQSS 0.75 1.25 0.75 1.25 tCK Data-in and DM setup time (to DQS) tDS 0.45 - 0.45 - ns Data-in and DM hold time (to DQS) tDH 0.45 - 0.45 - ns tDIPW 1.75 - 1.75 - ns Input setup time (fast slew rate) tIS 0.75 - 0.75 - ns Input hold time (fast slew rate) tIH 0.75 - 0.75 - ns Input setup time (slow slew rate) tIS 0.8 - 0.8 - ns Input hold time (slow slew rate) tIH 0.8 - 0.8 - ns tIPW 2.2 - 2.2 - ns DQS input high pulse width tDQSH 0.4 0.6 0.4 0.6 tCK DQS input low pulse width tDQSL 0.4 0.6 0.4 0.6 tCK DQS falling edge to CLK rising-setup time tDSS 0.2 - 0.2 - tCK DQS falling edge from CLK rising-hold time tDSH 0.2 - 0.2 - tCK Data strobe edge to output data edge tDQSQ - 0.45 - 0.45 ns tHZ -0.7 +0.7 -0.7 +0.7 ns tLZ -0.7 +0.7 -0.7 +0.7 ns DQ and DM input pulse width (for each input) Control and Address input pulse width Data-out high-impedance window from CLK/ CLK Data-out low-impedance window from CLK/ CLK Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 6/48 ESMT M13S64164A AC Timing Parameter & Specifications-continued Parameter Symbol -5 -6 min max min max Unit Half Clock Period tHP tCLmin or tCHmin - tCLmin or tCHmin - ns DQ-DQS output hold time tQH tHP- tQHS - tHP- tQHS - ns Data hold skew factor tQHS - 0.45 - 0.5 ns ACTIVE to PRECHARGE command tRAS 40 120K 42 120K ns Row Cycle Time tRC 60 - 60 - ns AUTO REFRESH Row Cycle Time tRFC 70 - 72 - ns ACTIVE to READ,WRITE delay tRCD 15 - 18 - ns PRECHARGE command period tRP 15 - 18 - ns ACTIVE to READ with AUTOPRECHARGE command tRAP 15 120K 18 120K ns ACTIVE bank A to ACTIVE bank B command tRRD 10 - 12 - ns Write recovery time tWR 15 - 18 - ns Write data in to READ command delay tWTR 2 - 2 - tCK Col. Address to Col. Address delay tCCD 1 - 1 - tCK Average periodic refresh interval tREFI - 15.6 - 15.6 us Write preamble tWPRE 0.25 - 0.25 - tCK Write postamble tWPST 0.4 0.6 0.4 0.6 tCK DQS read preamble tRPRE 0.9 1.1 0.9 1.1 tCK DQS read postamble tRPST 0.4 0.6 0.4 0.6 tCK tWPRES 0 - 0 - ns Load Mode Register / Extended Mode register cycle time tMRD 2 - 1 - tCK Exit self refresh to READ command tXSRD 200 - 200 - tCK Exit self refresh to non-READ command tXSNR 75 - 75 - ns Autoprecharge write recovery+Precharge time tDAL (tWR/tCK) + (tRP/tCK) Clock to DQS write preamble setup time Elite Semiconductor Memory Technology Inc. (tWR/tCK) + (tRP/tCK) tCK Publication Date : Jun. 2009 Revision : 1.4 7/48 ESMT M13S64164A Command Truth Table COMMAND CKEn-1 CKEn CS RAS CAS WE DM BA0,1 A10/AP A11, A9~A0 Note Register Extended MRS H X L L L L X OP CODE 1,2 Register Mode Register Set H 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 Auto Refresh Refresh Entry Self Refresh Read & Column Address Auto Precharge Disable Write & Column Address Auto Precharge Disable H 3 L H H X L L H H X V H X L H L H X V H L H X L H L L X V Auto Precharge Enable X L H H L X H X L L H L X Entry H L H X X X L V V V Exit L H X X X X Entry H L H X X X L H H H Exit L H H X X X L V V V Bank Selection All Banks Active Power Down H H Precharge Power Down Mode DM H No Operation Command H X X H X X X L H H H X 3 3 Row Address L Auto Precharge Enable Burst Stop 3 L Exit Bank Active & Row Addr. Precharge H Column Address Column Address X V L X H 4 4 4 4,6 7 X 5 X X X X X V X X X 8 (V = Valid, X = Don’t Care, H = Logic High, L = Logic Low) 1. OP Code: Operand Code. A0~A11 & BA0~BA1: Program keys. (@EMRS/MRS) 2. EMRS/MRS can be issued only at all banks precharge state. A new command can be issued 1 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 BA1 are “Low” at read, write, row active and precharge, bank A is selected. If BA0 is “High” and BA1 is “Low” at read, write, row active and precharge, bank B is selected. If BA0 is “Low” and BA1 is “High” 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. 5. If A10/AP is “High” at row precharge, BA0 and BA1 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 tRP after end of burst. 7. Burst stop command is valid at every burst length. 8. DM sampling at the rising and falling edges of the DQS and Data-in are masked at the both edges (Write DM latency is 0). Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 8/48 ESMT M13S64164A Basic Functionality Power-Up and Initialization Sequence The following sequence is required for POWER UP and Initialization. 1. Apply power and attempt to maintain CKE at a low state (all other inputs may be undefined.) - Apply VDD before or at the same time as VDDQ. - Apply VDDQ before or at the same time as VTT & VREF). 2. Start clock and maintain stable condition for a minimum of 200us. 3. The minimum of 200us after stable power and clock (CLK, CLK ), apply NOP & take CKE high. 4. Issue precharge commands for all banks of the device. *1 5. Issue EMRS to enable DLL. (To issue “DLL Enable” command, provide “Low” to A0, “High” to BA0 and “Low” to all of the rest address pins, A1~A11 and BA1) *1 6. Issue a mode register set command for “DLL reset”. The additional 200 cycles of clock input is required to lock the DLL. (To issue DLL reset command, provide “High” to A8 and “Low” to BA0) *2 7. Issue precharge commands for all banks of the device. 8. Issue 2 or more auto-refresh commands. 9. Issue a mode register set command with low to A8 to initialize device operation. *1 Every “DLL enable” command resets DLL. Therefore sequence 6 can be skipped during power up. Instead of it, the additional 200 cycles of clock input is required to lock the DLL after enabling DLL. *2 Sequence of 6 & 7 is regardless of the order. Po we r u p & In it i al i zat io n Se q u en ce 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 CL K CL K tR P C om ma nd p rec har ge A ll B a n ks tMR D E M RS tMR D M RS D ll Re s e t t RFC tR P pr ec har ge Al l B a n k s 1s t A uto R e fres h tMR D tR FC 2 nd A uto R e f r e sh M od e Re gis ter Se t A ny C omman d m i n . 2 0 0 C y c le Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 9/48 ESMT M13S64164A Mode Register Definition Mode Register Set (MRS) The mode register stores the data for controlling the various operating modes of DDR SDRAM. It programs CAS latency, addressing mode, burst length, test mode, DLL reset and various vendor specific options to make DDR SDRAM useful for variety of different applications. The default value of the register is not defined, therefore the mode register must be written after EMRS setting for proper DDR SDRAM operation. The mode register is written by asserting low on CS , RAS , CAS , WE and BA0 (The DDR SDRAM should be in all bank precharge with CKE already high prior to writing into the mode register). The state of address pins A0~A11 in the same cycle as CS , RAS , CAS , WE and BA0 going low is written in the mode register. Two clock cycles are requested to complete the write operation in the mode register. The mode register contents can be changed using the same command and clock cycle requirements during operation as long as all banks are in the idle state. The mode register is divided into various fields depending on functionality. The burst length uses A0~A2, addressing mode uses A3, CAS latency (read latency from column address) uses A4~A6. A7 is used for test mode. A8 is used for DLL reset. A7 must be set to low for normal MRS operation. Refer to the table for specific codes for various burst length, addressing modes and CAS latencies. BA1 BA0 0 0 A11 A10 A9 RFU A8 A7 DLL TM A6 A5 A4 CAS Latency A3 A2 BT A1 A0 Burst Length A8 DLL Reset A7 Mode A3 Burst Type 0 No 0 Normal 0 Sequential 1 Yes 1 Test 1 Interleave Address Bus Mode Register Burst Length CAS Latency BA1 BA0 0 0 0 1 Operating Mode MRS Cycle EMRS Cycle A6 0 0 0 0 1 1 1 A5 0 0 1 1 0 1 1 A4 0 1 0 1 0 0 1 Latency Reserve Reserve 2 3 Reserve 2.5 Reserve A2 A1 A0 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 Latency Sequential Interleave Reserve Reserve 2 2 4 4 8 8 Reserve Reserve Reserve Reserve Reserve Reserve Reserve Reserve Note: RFU (Reserved for future use) must stay “0” during MRS cycle Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 10/48 ESMT M13S64164A Burst Address Ordering for Burst Length Burst Length Starting Address (A2, A1,A0) xx0 xx1 x00 x01 x10 x11 000 001 010 011 100 101 110 111 2 4 8 Sequential Mode Interleave Mode 0, 1 1, 0 0, 1, 2, 3 1, 2, 3, 0 2, 3, 0, 1 3, 0, 1, 2 0, 1, 2, 3, 4, 5, 6, 7 1, 2, 3, 4, 5, 6, 7, 0 2, 3, 4, 5, 6, 7, 0, 1 3, 4, 5, 6, 7, 0, 1, 2 4, 5, 6, 7, 0, 1, 2, 3 5, 6, 7, 0, 1, 2, 3, 4 6, 7, 0, 1, 2, 3, 4, 5 7, 0, 1, 2, 3, 4, 5, 6 0, 1 1, 0 0, 1, 2, 3 1, 0, 3, 2 2, 3, 0, 1 3, 2, 1, 0 0, 1, 2, 3, 4, 5, 6, 7 1, 0, 3, 2, 5, 4, 7, 6 2, 3, 0, 1, 6, 7, 4, 5 3, 2, 1, 0, 7, 6, 5, 4 4, 5, 6, 7, 0, 1, 2, 3 5, 4, 7, 6, 1, 0, 3, 2 6, 7, 4, 5, 2, 3, 0, 1 7, 6, 5, 4, 3, 2, 1, 0 DLL Enable / Disable The DLL must be enabled for normal operation. DLL enable is required during power-up initialization, and upon returning to normal operation after having disabled the DLL for the purpose of debug or evaluation (upon exiting Self Refresh Mode, the DLL is enable automatically). Any time the DLL is enabled, 200 clock cycles must occur before a READ command can be issued. Output Drive Strength The normal drive strength for all outputs is specified to be SSTL_2, Class II. M13S64164A also support a weak drive strength option, intended for lighter load and/or point-to-point environments. Mode Register Set 0 1 2 3 4 5 6 7 8 CLK CLK *1 Mod e Register Set Precharg e Al l Ba n k s COMMAND tCK An y Com m an d t R P* 2 *1: MRS can be issued only at all banks precharge state. *2: Minimum tRP is required to issue MRS command. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 11/48 ESMT M13S64164A Extended Mode Register Set (EMRS) The extended mode register stores the data enabling or disabling DLL. The default value of the extended mode register is not defined, therefore the extended mode register must be written after power up for enabling or disabling DLL. The extended mode register is written by asserting low on CS , RAS , CAS , WE and high on BA0 (The DDR SDRAM should be in all bank precharge with CKE already high prior to writing into the extended mode register). The state of address pins A0~A11 and BA1 in the same cycle as CS , RAS , CAS and WE going low is written in the extended mode register. The mode register contents can be changed using the same command and clock cycle requirements during operation as long as all banks are in the idle state. A0 is used for DLL enable or disable. “High” on BA0 is used for EMRS. All the other address pins except A0 and BA0 must be set to low for proper EMRS operation. Refer to the table for specific codes. BA1 BA0 0 A11 A10 1 A9 A8 A7 A6 A5 A4 A3 A2 RFU : Must be set “0” A1 A0 D.I.C DLL Output Driver Strength Control BA1 BA0 Operaing Mode 0 0 MRS Cycle 0 1 EMRS Cycle Elite Semiconductor Memory Technology Inc. A0 DLL Enable 0 Normal 0 Enable 1 Weak 1 Disable Publication Date : Jun. 2009 Revision : 1.4 12/48 ESMT M13S64164A Precharge The precharge command is used to precharge or close a bank that has activated. The precharge command is issued when CS , RAS and WE are low and CAS is high at the rising edge of the clock. The precharge command can be used to precharge each bank respectively or all banks simultaneously. The bank select addresses (BA0, BA1) are used to define which bank is precharged when the command is initiated. For write cycle, tWR(min.) must be satisfied until the precharge command can be issued. After tRP from the precharge, an active command to the same bank can be initiated. Burst Selection for Precharge by Bank address bits A10/AP BA1 BA0 Precharge 0 0 0 Bank A Only 0 0 1 Bank B Only 0 1 0 Bank C Only 0 1 1 Bank D Only 1 X X All Banks NOP & Device Deselect The device should be deselected by deactivating the CS signal. In this mode DDR SDRAM should ignore all the control inputs. The DDR SDRAMs are put in NOP mode when CS is active and by deactivating RAS , CAS and WE . For both Deselect and NOP the device should finish the current operation when this command is issued. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 13/48 ESMT M13S64164A Row Active The Bank Activation command is issued by holding CAS and WE high with CS and RAS low at the rising edge of the clock (CLK). The DDR SDRAM has four independent banks, so two Bank Select addresses (BA0, BA1) are required. The Bank Activation command to the first read or write command must meet or exceed the minimum of RAS to CAS delay time (tRCD min). Once a bank has been activated, it must be precharged before another Bank Activation command can be applied to the same bank. The minimum time interval between interleaved Bank Activation command (Bank A to Bank B and vice versa) is the Bank to Bank delay time (tRRD min). Bank Activation Command Cycle ( CAS Latency = 3) 0 1 2 CLK CLK Addr ess Ban k A Ro w Ad d r . Ban k A Col. Add r . RAS-CAS d el ay (tRCD) Command Ban k A Activate NOP Write A wi th Au t o Precharg e Ban k A Ro w . Ad d r . Bank B Ro w Ad d r . RAS-RAS d el ay (tRRD) Bank B Act ivat e NOP Bank A Act ivat e ROW Cycle Time (tRC) : Don't Care Read Bank This command is used after the row activate command to initiate the burst read of data. The read command is initiated by activating CS , CAS , and deasserting WE at the same clock sampling (rising) edge as described in the command truth table. The length of the burst and the CAS latency time will be determined by the values programmed during the MRS command. Write Bank This command is used after the row activate command to initiate the burst write of data. The write command is initiated by activating CS , CAS , and WE at the same clock sampling (rising) edge as describe in the command truth table. The length of the burst will be determined by the values programmed during the MRS command. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 14/48 ESMT M13S64164A Essential Functionality for DDR SDRAM Burst Read Operation Burst Read operation in DDR SDRAM is in the same manner as the current SDRAM such that the Burst read command is issued by asserting CS and CAS low while holding RAS and WE high at the rising edge of the clock (CLK) after tRCD from the bank activation. The address inputs determine the starting address for the Burst, The Mode Register sets type of burst (Sequential or interleave) and burst length (2, 4, 8). The first output data is available after the CAS Latency from the READ command, and the consecutive data are presented on the falling and rising edge of Data Strobe (DQS) adopted by DDR SDRAM until the burst length is completed. <Burst Length = 4, CAS Latency = 3> 0 1 2 3 4 5 6 7 8 CL K CL K READ A CO M M A N D N OP NOP NO P NO P N OP N OP N OP NO P D QS C AS L at enc y =3 DQ ' s D o u t0 Do u t 1 Do u t2 D o u t3 Burst Write Operation The Burst Write command is issued by having CS , CAS and WE low while holding RAS high at the rising edge of the clock (CLK). The address inputs determine the starting column address. There is no write latency relative to DQS required for burst write cycle. The first data of a burst write cycle must be applied on the DQ pins tDS (Data-in setup time) prior to data strobe edge enabled after tDQSS from the rising edge of the clock (CLK) that the write command is issued. The remaining data inputs must be supplied on each subsequent falling and rising edge of Data Strobe until the burst length is completed. When the burst has been finished, any additional data supplied to the DQ pins will be ignored. <Burst Length = 4> 0 1 2 3 4 5 6 7 8 CLK CLK CO MM AND NO P W RITE NOP NOP NOP NOP NOP NOP NOP tDSH tDSS tDQSS DQS tWPST tWPRES DQ's Din0 Elite Semiconductor Memory Technology Inc. Din1 Din2 Din3 Publication Date : Jun. 2009 Revision : 1.4 15/48 ESMT M13S64164A Read Interrupted by a Read A Burst Read can be interrupted before completion of the burst by new Read command of any bank. When the previous burst is interrupted, the remaining addresses are overridden by the new address with the full burst length. The data from the first Read command continues to appear on the outputs until the CAS latency from the interrupting Read command is satisfied. At this point the data from the interrupting Read command appears. Read to Read interval is minimum 1 Clock. <Burst Length = 4, CAS Latency = 3> 0 1 2 3 4 5 6 7 8 CLK CLK COMMAND READ A READ B NO P NOP NO P NO P NOP NOP NO P DQS CAS Latency= 3 Dou t A 0 Dou t A 1 Dou t B 0 Dou t B 1 Dout B 2 Dou t B 3 DQ's tCCD Read Interrupted by a Write & Burst Stop To interrupt a burst read with a write command, Burst Stop command must be asserted to avoid data contention on the I/O bus by placing the DQ’s(Output drivers) in a high impedance state. To insure the DQ’s are tri-stated one cycle before the beginning the write operation, Burt stop command must be applied at least RU(CL) clocks ［RU mean round up to the nearest integer］ before the Write command. <Burst Length = 4, CAS Latency = 3> 0 1 2 3 4 5 6 7 8 CLK CLK COMMAND READ Bu r st S t op NOP NO P W RITE NO P NOP NOP NOP DQS CAS Latency= 3 DQ's Elite Semiconductor Memory Technology Inc. Dou t 0 Dou t 1 Din 0 Din 1 Din 2 Din 3 Publication Date : Jun. 2009 Revision : 1.4 16/48 ESMT M13S64164A Read Interrupted by a Precharge A Burst Read operation can be interrupted by precharge of the same bank. The minimum 1 clock is required for the read to precharge intervals. A precharge command to output disable latency is equivalent to the CAS latency. <Burst Length = 8, CAS Latency = 3> 0 1 2 3 4 5 6 7 8 CLK CLK 1tCK COMMAND READ Prech arg e NO P NOP NOP NOP NOP NOP NOP DQS CAS Latency= 3 DQ's Dou t 0 Dou t 1 Dou t 2 Dou t 3 Dou t 4 Dou t 5 Dou t 6 Dou t 7 Int erru pt ed by precharg e When a burst Read command is issued to a DDR SDRAM, a Precharge command may be issued to the same bank before the Read burst is complete. The following functionality determines when a Precharge command may be given during a Read burst and when a new Bank Activate command may be issued to the same bank. 1. For the earliest possible Precharge command without interrupting a Read burst, the Precharge command may be given on the rising clock edge which is CL clock cycles before the end of the Read burst where CL is the CAS Latency. A new Bank Activate command may be issued to the same bank after tRP (RAS precharge time). 2. When a Precharge command interrupts a Read burst operation, the Precharge command may be given on the rising clock edge which is CL clock cycles before the last data from the interrupted Read burst where CL is the CAS Latency. Once the last data word has been output, the output buffers are tristated. A new Bank Activate command may be issued to the same bank after tRP. 3. For a Read with autoprecharge command, a new Bank Activate command may be issued to the same bank after tRP where tRP begins on the rising clock edge which is CL clock cycles before the end of the Read burst where CL is the CAS Latency. During Read with autoprecharge, the initiation of the internal precharge occurs at the same time as the earliest possible external Precharge command would initiate a precharge operation without interrupting the Read burst as described in 1 above. 4. For all cases above, tRP is an analog delay that needs to be converted into clock cycles. The number of clock cycles between a Precharge command and a new Bank Activate command to the same bank equals tRP / tCK (where tCK is the clock cycle time) with the result rounded up to the nearest integer number of clock cycles. In all cases, a Precharge operation cannot be initiated unless tRAS(min) [minimum Bank Activate to Precharge time] has been satisfied. This includes Read with autoprecharge commands where tRAS(min) must still be satisfied such that a Read with autoprecharge command has the same timing as a Read command followed by the earliest possible Precharge command which does not interrupt the burst. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 17/48 ESMT M13S64164A Write Interrupted by a Write A Burst Write can be interrupted before completion of the burst by a new Write command, with the only restriction that the interval that separates the commands must be at least one clock cycle. When the previous burst is interrupted, the remaining addresses are overridden by the new address and data will be written into the device until the programmed burst length is satisfied. <Burst Length = 4> 0 1 2 3 4 5 6 7 8 CLK CL K 1tCK C OMM AN D N OP WR IT E A WR IT E B NO P N OP N OP NO P N OP N OP D QS D Q's D in A 0 D in A 1 Di n B 0 D in B 1 Di n B 2 D in B 3 tCCD The following functionality establishes how a Write command may interrupt a Read burst. 1. For Write commands interrupting a Read burst, a Read burst, a Burst Terminate command is required to stop the read burst and tristate the DQ bus prior to valid input write data. Once the Burst Terminate command has been issued, the minimum delay to a Write command = RU (CL) [CL is the CAS Latency and RU means round up to the nearest integer]. 2. It is illegal for a Write command to interrupt a Read with autoprecharge command. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 18/48 ESMT M13S64164A Write Interrupted by a Read & DM A burst write can be interrupted by a read command of any bank. The DQ’s must be in the high impedance state at least one clock cycle before the interrupting read data appear on the outputs to avoid data contention. When the read command is registered, any residual data from the burst write cycle must be masked by DM. The delay from the last data to read command (tWTR) is required to avoid the data contention DRAM inside. Data that are presented on the DQ pins before the read command is initiated will actually be written to the memory. Read command interrupting write can not be issued at the next clock edge of that of write command. <Burst Length = 8, CAS Latency = 3> 0 1 2 3 4 5 6 7 8 CLK CLK COMM AND NO P W RITE NO P NOP Rea d NOP NOP NO P NOP tWTR tDQSSmax DQ S tWPRES CAS Latency= 3 Din 0 Din 1 Din 2 Din 3 Din 4 Din 5 Din 6 Din 7 DQ's tDQSSmin Dou t 0 Dou t 1 tWTR DQ S tWPRES CAS Latency= 3 DQ's Din 0 Din 1 Din 2 Din 3 Din 4 Din 5 Din 6 Din 7 Dou t 0 Dou t 1 DM The following functionality established how a Read command may interrupt a Write burst and which input data is not written into the memory. 1. For Read commands interrupting a Write burst, the minimum Write to Read command delay is 2 clock cycles. The case where the Write to Read delay is 1 clock cycle is disallowed. 2. For read commands interrupting a Write burst, the DM pin must be used to mask the input data words which immediately precede the interrupting Read operation and the input data word which immediately follows the interrupting Read operation. 3. For all cases of a Read interrupting a Write, the DQ and DQS buses must be released by the driving chip (i.e., the memory controller) in time to allow the buses to turn around before the SDRAM drives them during a read operation. 4. If input Write data is masked by the Read command, the DQS inputs are ignored by the SDRAM. 5. It is illegal for a Read command interrupt a Write with autoprecharge command. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 19/48 ESMT M13S64164A Write Interrupted by a Precharge & DM A burst write operation can be interrupted before completion of the burst by a precharge of the same bank. Random column access is allowed. A write recovery time (tWR) is required from the last data to precharge command. When precharge command is asserted, any residual data from the burst write cycle must be masked by DM. <Burst Length = 8> 0 1 2 3 4 5 6 7 8 CLK CLK COMM AND NOP WRITE A NOP NOP NOP NOP Precharge WRITE B NOP tDQSSmax DQS tWR Dina0 Dina1 Dina2 Dina3 Dina4 Dina5 Dina6 Dina7 DQ's Dinb0 tWR tDQSSmin DQS DQ's Dina0 Dina1 Dina2 Dina3 Dina4 Dina5 Dina6 Dina7 Dinb0 Dinb1 DM Precharge timing for Write operations in DRAMs requires enough time to allow “Write recovery” which is the time required by a DRAM core to properly store a full “0” or “1” level before a Precharge operation. For DDR SDRAM, a timing parameter, tWR, is used to indicate the required of time between the last valid write operation and a Precharge command to the same bank. The precharge timing for writes is a complex definition since the write data is sampled by the data strobe and the address is sampled by the input clock. Inside the SDRAM, the data path is eventually synchronizes with the address path by switching clock domains from the data strobe clock domain to the input clock domain. This makes the definition of when a precharge operation can be initiated after a write very complex since the write recovery parameter must reference only the clock domain that is used to time the internal write operation i.e., the input clock domain. tWR starts on the rising clock edge after the last possible DQS edge that strobed in the last valid and ends on the rising clock edge that strobes in the precharge command. 1. For the earliest possible Precharge command following a Write burst without interrupting the burst, the minimum time for write recovery is defined by tWR. 2. When a precharge command interrupts a Write burst operation, the data mask pin, DQ, is used to mask input data during the time between the last valid write data and the rising clock edge in which the Precharge command is given. During this time, the DQS input is still required to strobe in the state of DM. The minimum time for write recovery is defined by tWR. 3. For a Write with autoprecharge command, a new Bank Activate command may be issued to the same bank after tWR + tRP where tWR + tRP starts on the falling DQS edge that strobed in the last valid data and ends on the rising clock edge that strobes in the Bank Activate commands. During write with autoprecharge, the initiation of the internal precharge occurs at the same time as the earliest possible external Precharge command without interrupting the Write burst as described in 1 above. 4. In all cases, a Precharge operation cannot be initiated unless tRAS(min) [minimum Bank Activate to Precharge time] has been satisfied. This includes Write with autoprecharge commands where tRAS(min) must still be satisfied such that a Write with autoprecharge command has the same timing as a Write command followed by the earliest possible Precharge command which does not interrupt the burst. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 20/48 ESMT M13S64164A Burst Stop The burst stop command is initiated by having RAS and CAS high with CS and WE low at the rising edge of the clock (CLK). The burst stop command has the fewest restriction making it the easiest method to use when terminating a burst read operation before it has been completed. When the burst stop command is issued during a burst read cycle, the pair of data and DQS (Data Strobe) go to a high impedance state after a delay which is equal to the CAS latency set in the mode register. The burst stop command, however, is not supported during a write burst operation. <Burst Length = 4, CAS Latency = 3 > 0 1 2 3 4 5 6 7 8 CL K CL K C OMMAN D READ A B u rs t S t op N OP N OP N OP N OP N OP N OP N OP D QS C A S Lat e n cy = 3 D Q' s Do u t 0 Do u t 1 The Burst Stop command is a mandatory feature for DDR SDRAMs. The following functionality is required. 1. 2. 3. 4. 5. 6. The BST command may only be issued on the rising edge of the input clock, CLK. BST is only a valid command during Read burst. BST during a Write burst is undefined and shall not be used. BST applies to all burst lengths. BST is an undefined command during Read with autoprecharge and shall not be used. When terminating a burst Read command, the BST command must be issued LBST (“BST Latency”) clock cycles before the clock edge at which the output buffers are tristated, where LBST equals the CAS latency for read operations. 7. When the burst terminates, the DQ and DQS pins are tristated. The BST command is not byte controllable and applies to all bits in the DQ data word and the (all) DQS pin(s). Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 21/48 ESMT M13S64164A DM masking The DDR SDRAM has a data mask function that can be used in conjunction with data write cycle. Not read cycle. When the data mask is activated (DM high) during write operation, DDR SDRAM does not accept the corresponding data. (DM to data-mask latency is zero) DM must be issued at the rising or falling edge of data strobe. <Burst Length = 8> 0 1 2 3 4 5 6 7 8 CLK CLK CO MM AND DQS DQ's W RITE NO P NO P NOP NOP Din 4 Din 5 Din 6 NO P NOP NOP NOP tDQSS Din 0 Din 1 Din 2 Din 3 Din 7 DM masked by DM = H Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 22/48 ESMT M13S64164A Read With Auto Precharge If a read with auto-precharge command is initiated, the DDR SDRAM automatically enters the precharge operation BL/2 clock later from a read with auto-precharge command when tRAS(min) is satisfied. If not, the start point of precharge operation will be delayed until tRAS(min) is satisfied. Once the precharge operation has started the bank cannot be reactivated and the new command can not be asserted until the precharge time (tRP) has been satisfied. <Burst Length = 4, CAS Latency = 3> 0 CL K 1 2 3 4 5 6 7 8 C LK C O M M A ND Ba nk A A CT I VE N OP N OP R ea d A A ut o P re cha rg e N OP N OP N OP N OP N OP t R AP D QS C A S Lat en cy = 3 D Q' s D o ut 0 Do u t 1 Do u t 2 Do u t 3 At burst read / write with auto precharge, CAS interrupt of the same bank is illegal. Write with Auto Precharge If A10 is high when write command is issued, the write with auto-precharge function is performed. Any new command to the same bank should not be issued until the internal precharge is completed. The internal precharge begins after keeping tWR(min). <Burst Length = 4> 0 1 2 3 4 5 6 7 8 CLK CLK COMM AND Ban k A ACTIVE NO P W r i te A Auto Pr ec har g e NOP NO P NO P NO P NOP NOP DQ S *B an k c an be reac t ivat ed at com p let ion of t RP DQ's Dout 0 Dout 1 Dout 2 Dout 3 tWR tRP In te rn al p re ch ar g e s tar t Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 23/48 ESMT M13S64164A Auto Refresh & Self Refresh Auto Refresh An auto refresh command is issued by having CS , RAS and CAS held low with CKE and WE high at the rising edge of the clock(CLK). All banks must be precharged and idle for tRP(min) before the auto refresh command is applied. No control of the external address pins is requires once this cycle has started because of the internal address counter. When the refresh cycle has completed, all banks will be in the idle state. A delay between the auto refresh command and the next activate command or subsequent auto refresh command must be greater than or equal to the tRFC(min). A maximum of eight consecutive AUTO REFRSH commands (with tRFC(min)) can be posted to any given SDRAM, and the maximum absolute interval between any AUTO REFRESH command and the next AUTO REFRESH command is 8x15.6μm. CLK CLK COMMAND Au t o Refresh PRE CMD CKE = High tRP tRFC Self Refresh A self refresh command is defines by having CS , RAS , CAS and CKE held low with WE high at the rising edge of the clock (CLK). Once the self refresh command is initiated, CKE must be held low to keep the device in self refresh mode. During the self refresh operation, all inputs except CKE are ignored. The clock is internally disabled during self refresh operation to reduce power consumption. The self refresh is exited by supplying stable clock input before returning CKE high, asserting deselect or NOP command and then asserting CKE high for longer than tXSRD for locking of DLL. CLK CLK COMM AND Sel f Ref resh Au to Refresh Rea d CKE tXSNR tXSRD Note: After self refresh exit, input an auto refresh command immediately. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 24/48 ESMT M13S64164A Power down Power down is entered when CKE is registered low (no accesses can be in progress). If power-down occurs when all banks are idle, this mode is referred to as precharge power-down; if power-down occurs when there is a row active in any bank, this mode is referred to as active power-down. Entering power-down deactivates the input and output buffers, excluding CLK, CLK and CKE. For maximum power savings, the user has the option of disabling the DLL prior to entering power-down. In that case, the DLL must be enabled after exiting power-down, and 200 clock cycles must occur before a READ command can be issued. However, power-down duration is limited by the refresh requirements of the device, so in most applications, the self-refresh mode is preferred over the DLL disable power-down mode. In the power-down, CKE LOW and a stable clock signal must be maintained at the inputs of the DDR SDRAM, and all other input signals are “Don’t Care”. The power-down state is synchronously exited when CKE is registered HIGH (along with a NOP or DESELECT command). A valid executable command may be applied one clock cycle later. CLK CLK tIS tIS CKE COMM AND VALID NOP No c ol um n ac es s Ent er p ow er - dow n in pr ogr am m ode Elite Semiconductor Memory Technology Inc. NOP VALID Exi t po w e r - do w n m ode Publication Date : Jun. 2009 Revision : 1.4 25/48 ESMT M13S64164A Functional Truth Table: Current IDLE ROW ACTIVE Address Command Action CS RAS CAS WE H X X X X DESEL NOP L H H H X NOP NOP L H H L BA Burst Stop ILLEGAL*2 L H L X BA, CA, A10 READ / WRITE ILLEGAL*2 L L H H BA, RA Active Bank Active, Latch RA L L H L BA, A10 PRE / PREA NOP*4 L L L H X Refresh AUTO-Refresh*5 L L L L Op-Code Mode-Add MRS Mode Register Set*5 H X X X X DESEL NOP L H H H X NOP NOP L H H L BA Burst Stop NOP L H L H BA, CA, A10 READ / READA Begin Read, Latch CA, Determine Auto -precharge L H L L BA, CA, A10 WRITE / WRITEA Begin Write, Latch CA, Determine Auto -precharge L L H H BA, RA Active Bank Active/ILLEGAL*2 L L H L BA, A10 PRE / PREA Precharge/Precharge All L L L H X Refresh ILLEGAL L L L L Op-Code Mode-Add MRS ILLEGAL H X X X X DESEL NOP (Continue Burst to END) L H H H X NOP NOP (Continue Burst to END) L H H L BA Burst Stop Terminate Burst L H L H BA, CA, A10 READ / READA Terminate Burst, Latch CA, Begin New Read, Determine Auto-Precharge*3 L H L L BA, CA, A10 WRITE / WRITEA ILLEGAL L L H H BA, RA Active Bank Active/ILLEGAL*2 L L H L BA, A10 PRE / PREA Terminate Burst, Precharge L L L H X Refresh ILLEGAL L L L L Op-Code Mode-Add MRS ILLEGAL READ Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 26/48 ESMT Current State WRITE READ with AUTO PRECHARGE WRITE with AUTO PRECHARGE M13S64164A Address Command Action CS RAS CAS WE H X X X X DESEL NOP (Continue Burst to end) L H H H X NOP NOP (Continue Burst to end) L H H L BA Burst Stop ILLEGAL L H L H BA, CA, A10 READ/READA Terminate Burst With DM=High, Latch CA, Begin Read, Determine Auto-Precharge*3 L H L L BA, CA, A10 WRITE/WRITEA Terminate Burst, Latch CA, Begin new Write, Determine Auto-Precharge*3 L L H H BA, RA Active Bank Active/ILLEGAL*2 L L H L BA, A10 PRE / PREA Terminal Burst With DM=High, Precharge L L L H X Refresh ILLEGAL L L L L Op-Code Mode-Add MRS ILLEGAL H X X X X DESEL NOP (Continue Burst to end) L H H H X NOP NOP (Continue Burst to end) L H H L BA Burst Stop ILLEGAL L H L H BA, CA, A10 READ READ*7 L H L L BA, CA, A10 WRITE ILLEGAL L L H H BA, RA Active Bank Active/ILLEGAL*2 L L H L BA, A10 PRE / PREA ILLEGAL*2 L L L H X Refresh ILLEGAL L L L L Op-Code Mode-Add MRS ILLEGAL H X X X X DESEL NOP (Continue Burst to END) L H H H X NOP NOP (Continue Burst to END) L H H L BA Burst Stop ILLEGAL L H L H BA, CA, A10 READ ILLEGAL L H L L BA, CA, A10 WRITE Write L L H H BA, RA Active Bank Active/ILLEGAL*2 L L H L BA, A10 PRE / PREA ILLEGAL*2 L L L H X Refresh ILLEGAL L L L L Op-Code Mode-Add MRS ILLEGAL Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 27/48 ESMT Current State PRE-CHARGIN G ROW ACTIVATING WRITE RECOVERING M13S64164A Address Command Action CS RAS CAS WE H X X X X DESEL NOP (Idle after tRP) L H H H X NOP NOP (Idle after tRP) L H H L BA Burst Stop ILLEGAL*2 L H L X BA, CA, A10 READ/WRITE ILLEGAL*2 L L H H BA, RA Active ILLEGAL*2 L L H L BA, A10 PRE / PREA NOP*4 (Idle after tRP) L L L H X Refresh ILLEGAL L L L L Op-Code Mode-Add MRS ILLEGAL H X X X X DESEL NOP (ROW Active after tRCD) L H H H X NOP NOP (ROW Active after tRCD) L H H L BA Burst Stop ILLEGAL*2 L H L X BA, CA, A10 READ / WRITE ILLEGAL*2 L L H H BA, RA Active ILLEGAL*2 L L H L BA, A10 PRE / PREA ILLEGAL*2 L L L H X Refresh ILLEGAL L L L L Op-Code Mode-Add MRS ILLEGAL H X X X X DESEL NOP L H H H X NOP NOP L H H L BA Burst Stop ILLEGAL*2 L H L H BA, CA, A10 READ ILLEGAL*2 L H L L BA, CA, A10 WRITE WRITE L L H H BA, RA Active ILLEGAL*2 L L H L BA, A10 PRE / PREA ILLEGAL*2 L L L H X Refresh ILLEGAL L L L L Op-Code Mode-Add MRS ILLEGAL Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 28/48 ESMT Current State RE-FRESHING MODE REGISTER SETTING M13S64164A Address Command Action CS RAS CAS WE H X X X X DESEL NOP (Idle after tRP) L H H H X NOP NOP (Idle after tRP) L H H L BA Burst Stop ILLEGAL L H L X BA, CA, A10 READ/WRITE ILLEGAL L L H H BA, RA Active ILLEGAL L L H L BA, A10 PRE / PREA ILLEGAL L L L H X Refresh ILLEGAL L L L L Op-Code Mode-Add MRS ILLEGAL H X X X X DESEL NOP (Idle after tRP) L H H H X NOP NOP (Idle after tRP) L H H L BA Burst Stop ILLEGAL L H L X BA, CA, A10 READ / WRITE ILLEGAL L L H H BA, RA Active ILLEGAL L L H L BA, A10 PRE / PREA ILLEGAL L L L H X Refresh ILLEGAL L L L L Op-Code Mode-Add MRS ILLEGAL ABBREVIATIONS: H = High Level, L = Low level, V = Valid, X = Don’t Care BA = Bank Address, RA =Row Address, CA = Column Address, NOP = No Operation Note: 1. All entries assume that CKE was High during the preceding clock cycle and the current clock cycle. 2. ILLEGAL to bank in specified state; function may be legal in the bank indicated by BA, depending on the state of the bank. 3. Must satisfy bus contention, bus turn around and write recovery requirements. 4. NOP to bank precharging or in idle state. May precharge bank indicated by BA. 5. ILLEGAL of any bank is not idle. 6. Same bank’s previous auto precharg will not be performed. But if the bank is different, previous auto precharge will be performed. 7. Refer to “Read with Auto Precharge: for more detailed information. ILLEGAL = Device operation and / or data integrity are not guaranteed. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 29/48 ESMT Current State SELF-REFRESHING* 1 POWER DOWN ALL BANKS IDLE*2 M13S64164A CKE n-1 CKE n CS RAS CAS WE Add H X X X X X X INVALID L H H X X X X Exit Self-Refresh L H L H H H X Exit Self-Refresh L H L H H L X ILLEGAL L H L H L X X ILLEGAL L H L L X X X ILLEGAL L L X X X X H X X X X X X INVALID L H X X X X X Exit Power Down (Idle after tPDEX) L L X X X X X NOP (Maintain Power Down) H H X X X X X Refer to Function True Table H L L L L H X Enter Self-Refresh H L H X X X X Exit Power Down H L L H H H X Exit Power Down H L L H H L X ILLEGAL H L L H L X X ILLEGAL H L L L X X X ILLEGAL L L L X X X X Refer to Current State = Power Down H H X X X X X Refer to Function True Table X Action NOP (Maintain Self-Refresh) ANY STATE other than listed above ABBREVIATIONS: H = High Level, L = Low level, V = Valid, X = Don’t Care Note: 1. CKE Low to High transition will re-enable CLK, CLK and other inputs asynchronously. A minimum setup time must be satisfied before issuing any command other than EXIT. 2. Power-Down and Self-Refresh can be entered only from All Bank Idle state. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 30/48 ESMT M13S64164A Basic Timing (Setup, Hold and Access Time @ BL=4, CL=3) tCL tCK 0 1 2 3 4 5 6 7 8 9 10 CLK CLK tHP Note1 HIGH CKE tIS CS tIH RAS CAS BA0,BA1 BAa BAb BAa Cb A10/ AP ADDR (A0~ An ) WE tDQSCK tRPRE DQS tDQSCK tRPST tDQSS tWPRE Hi-Z tDQSL tWPST Hi-Z tDQSH tDQSQ tAC tLZ Da0 DQ Da1 Da2 Da3 tWPRES tDS tDH tDS tDH tHZ Hi-Z Db0 Db1 Db2 Db3 Hi-Z tQH DM COMMAND READ WRITE Note: 1. tHP is lesser of tCL or tCH clock transition collectively when a bank is active. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 31/48 ESMT M13S64164A Multi Bank Interleaving READ (@ BL=4, CL=3) Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 32/48 ESMT M13S64164A Multi Bank Interleaving WRITE (@ BL=4) Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 33/48 ESMT M13S64164A Read with Auto Precharge (@ BL=8) 0 1 2 3 4 5 6 7 8 9 10 CLK CLK HIGH CKE CS RAS CAS BA0,BA1 BAa BAa A10/AP ADDR (A0~ An ) Ra Ra Ca WE Au t o p r e ch ar g e s t a r t tRP Note1 DQS(CL=3) Q a0 DQ(CL=3) Q a1 Qa2 Q a3 Q a4 Q a5 Q a6 Q a7 DM CO MM AND Note: 1. READ ACTIVE The row active command of the precharge bank can be issued after tRP from this point. The new read/write command of another activated bank can be issued from this point. At burst read/write with auto precharge, CAS interrupt of the same bank is illegal. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 34/48 ESMT M13S64164A Write with Auto Precharge (@ BL=8) Note: 1. The row active command of the precharge bank can be issued after tRP from this point. The new read/write command of another activated bank can be issued from this point. At burst read/write with auto precharge, CAS interrupt of the same/another bank is illegal. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 35/48 ESMT M13S64164A Read Interrupted by Precharge (@ BL=8) Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 36/48 ESMT M13S64164A Read Interrupted by a Read (@ BL=8, CL=3) Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 37/48 ESMT M13S64164A Read Interrupted by a Write & Burst stop (@ BL=8, CL=3) 0 1 2 3 4 5 6 7 8 9 10 CLK CLK HIGH CKE CS RAS CAS BA0, BA1 BAa BAb Ca Cb A10/ AP ADDR (A0~ An ) WE DQS DQ Qa0 Q a1 Q b0 Qb1 Q b2 Q b3 Q b4 Qb5 Q b6 Q b7 DM COMMAND READ Burst Stop Elite Semiconductor Memory Technology Inc. WRITE Publication Date : Jun. 2009 Revision : 1.4 38/48 ESMT M13S64164A Write followed by Precharge (@ BL=4) 0 1 2 3 4 5 6 7 8 9 10 CLK CLK HIGH CKE CS RAS CAS BA0,BA1 BAa BAa A1 0 / A P ADDR (A0~ An) Ca WE tWR DQS Da0 DQ Da1 Da2 Da3 DM COMMAND WRITE Elite Semiconductor Memory Technology Inc. PRE CHARGE Publication Date : Jun. 2009 Revision : 1.4 39/48 ESMT M13S64164A Write Interrupted by Precharge & DM (@ BL=8) Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 40/48 ESMT M13S64164A Write Interrupted by a Read (@ BL=8, CL=3) 0 1 2 3 4 5 6 7 8 9 10 CLK CLK HIGH CKE CS RAS CAS BA0, BA1 BAa BAb Ca Cb A1 0/ AP ADDR (A0~ An ) WE DQ S Da0 DQ Da1 Da2 Da3 Da4 Da5 Q b0 Q b1 Q b2 Qb3 Q b4 Q b5 Ma s k ec d b y D M DM tWTR COMMAND WRITE Elite Semiconductor Memory Technology Inc. READ Publication Date : Jun. 2009 Revision : 1.4 41/48 ESMT M13S64164A DM Function (@ BL=8) only for write 0 1 2 3 4 5 6 7 8 9 10 CLK CLK HIGH CKE CS RAS CAS BA0,BA1 BAa A10/ AP ADDR (A0~ An) Ca WE DQS( CL= 3 ) DQ(CL=3) Qa0 Q a1 Qa2 Qa3 Qa4 Qa5 Qa6 Qa7 DM COMMAND WRITE Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 42/48 ESMT M13S64164A Power up & Initialization Sequence 0 1 2 3 4 5 6 8 7 9 11 10 12 13 14 15 16 17 18 19 20 CLK CLK High level is required CKE CS RAS CAS WE BA0 B A 1 , A 9 , A 11 A10/AP A8 A7 ADDRESS KEY A1~A6 A0 Minimum 200 Cycle High-Z DQ tMRD tRP tRC tRC Mi nimum of 2 Ref re sh Cycles are re quired High-Z DQS P re cha rge All Bank EMRS DLL Enable (Power & Clock must be stable for 2 0 0 u s before precharge All Bank) Any Command Precharge All Bank 1st Auto Refresh MRS DLL Reset Elite Semiconductor Memory Technology Inc. 2nd Auto Refresh Mode Resister Set : Don't Care Publication Date : Jun. 2009 Revision : 1.4 43/48 ESMT M13S64164A Mode Register Set 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 CLK CLK tCK CKE CS RAS CAS WE BA0, BA1 A10 /AP ADDR ESS KEY ADDR (A0~An) DM tRP tMRD High-Z DQ High-Z DQS Precharge Command All Ban k Any Com man d M ode R egis ter Set Command Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 44/48 ESMT M13S64164A PACKING DIMENSIONS 66-LEAD TSOP(II) Symbol A A1 A2 b b1 c c1 D ZD E E1 e L L1 θ° θ1° DRAM(400mil) Dimension in inch Min Norm Max 0.047 0.002 0.004 0.006 0.037 0.039 0.041 0.009 0.015 0.009 0.012 0.013 0.005 0.008 0.0047 0.005 0.006 0.875 BSC 0.028 REF 0.455 0.463 0.471 0.400 BSC 0.026 BSC 0.016 0.02 0.024 0.031 REF 0° 10° Elite Semiconductor Memory Technology Inc. 8° 15° 20° Dimension in mm Min Norm Max 1.2 0.05 0.1 0.15 0.95 1 1.05 0.22 0.38 0.22 0.3 0.33 0.12 0.21 0.12 0.127 0.16 22.22 BSC 0.71 REF 11.56 11.76 11.96 10.16 BSC 0.65 BSC 0.4 0.5 0.6 0.80 REF 0° 10° 8° 15° 20° Publication Date : Jun. 2009 Revision : 1.4 45/48 ESMT M13S64164A PACKING DIMENSIONS 60-BALL DDR SDRAM Symbol A A1 A2 Φb D E D1 E1 e e1 ( 8x13 mm ) Dimension in mm Min Norm Max 1.20 0.30 0.35 0.40 0.80 0.40 0.45 0.50 7.90 8.00 8.10 12.90 13.00 13.10 6.40 11.0 0.80 1.00 Dimension in inch Min Norm Max 0.047 0.012 0.014 0.016 0.031 0.016 0.018 0.020 0.311 0.315 0.319 0.508 0.512 0.516 0.252 0.433 0.031 0.039 Controlling dimension : Millimeter. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 46/48 ESMT M13S64164A Revision History Revision Date 0.1 2006.10.23 Original 0.2 2007.06.06 Add BGA type spec 0.3 2007.07.20 Modify BGA assignment 0.4 2007.10.01 Modify IDD spec 1.0 2007.11.20 Delete “Preliminary” 1.1 2007.12.06 Modify type error of tQHS 1.2 2008.02.21 Modify 66-Lead TSOP(II) packing dimension 1.3 2008.09.04 1.4 2009.06.10 Elite Semiconductor Memory Technology Inc. Description 1. Move Revision History to the last 2. Modify tWR and tWTR 1. Modify the specification of II 2. Add the specification of IDD0, IDD1, IDD2P, IDD2N, IDD3P, IDD3N, IDD4R, IDD4W, IDD5, IDD7 3. Add a note of self refresh operation 4. Correct the chart of Power up & Initialization Sequence Publication Date : Jun. 2009 Revision : 1.4 47/48 ESMT M13S64164A Important Notice All rights reserved. No part of this document may be reproduced or duplicated in any form or by any means without the prior permission of ESMT. The contents contained in this document are believed to be accurate at the time of publication. ESMT assumes no responsibility for any error in this document, and reserves the right to change the products or specification in this document without notice. The information contained herein is presented only as a guide or examples for the application of our products. No responsibility is assumed by ESMT for any infringement of patents, copyrights, or other intellectual property rights of third parties which may result from its use. No license, either express , implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of ESMT or others. Any semiconductor devices may have inherently a certain rate of failure. To minimize risks associated with customer's application, adequate design and operating safeguards against injury, damage, or loss from such failure, should be provided by the customer when making application designs. ESMT's products are not authorized for use in critical applications such as, but not limited to, life support devices or system, where failure or abnormal operation may directly affect human lives or cause physical injury or property damage. If products described here are to be used for such kinds of application, purchaser must do its own quality assurance testing appropriate to such applications. Elite Semiconductor Memory Technology Inc. Publication Date : Jun. 2009 Revision : 1.4 48/48