K4S28323LF - F(H)E/N/S/C/L/R Mobile-SDRAM 1M x 32Bit x 4 Banks Mobile SDRAM in 90FBGA FEATURES GENERAL DESCRIPTION • 2.5V power supply. The K4S28323LF is 134,217,728 bits synchronous high data rate Dynamic RAM organized as 4 x 1,048,576 words by 32 bits, fabricated with SAMSUNG’s high performance CMOS technology. Synchronous design allows precise cycle control with the use of system clock and I/O transactions are possible on every clock cycle. Range of operating frequencies, programmable burst lengths and programmable latencies allow the same device to be useful for a variety of high bandwidth and high performance memory system applications. • LVCMOS compatible with multiplexed address. • Four banks operation. • MRS cycle with address key programs. -. CAS latency (1, 2 & 3). -. Burst length (1, 2, 4, 8 & Full page). -. Burst type (Sequential & Interleave). • EMRS cycle with address key programs. • All inputs are sampled at the positive going edge of the system clock. • Burst read single-bit write operation. • Special Function Support. -. PASR (Partial Array Self Refresh). -. Internal TCSR (Temperature Compensated Self Refresh) • DQM for masking. • Auto refresh. • • • • 64ms refresh period (4K cycle). Commercial Temperature Operation (-25°C ~ 70°C). Extended Temperature Operation (-25°C ~ 85°C). 90Balls FBGA with 0.8mm ball pitch ( -FXXX : Leaded, -HXXX : Lead Free). ORDERING INFORMATION Part No. Max Freq. K4S28323LF-F(H)E/N/S/C/L/R60 166MHz(CL=3) K4S28323LF-F(H)E/N/S/C/L/R75 133MHz(CL=3) K4S28323LF-F(H)E/N/S/C/L/R1H 105MHz(CL=2) K4S28323LF-F(H)E/N/S/C/L/R1L 105MHz(CL=3)*1 Interface Package LVCMOS 90 FBGA Leaded (Lead Free) - F(H)E/N/S : Normal/Low/Super Low Power, Extended Temperature(-25°C ~ 85°C) - F(H)C/L/R : Normal/Low/Super Low Power, Commercial Temperature(-25°C ~ 70°C) NOTES : 1. In case of 40MHz Frequency, CL1 can be supported. 2. Samsung are not designed or manufactured for use in a device or system that is used under circumstance in which human life is potentially at stake. Please contact to the memory marketing team in samsung electronics when considering the use of a product contained herein for any specific purpose, such as medical, aerospace, nuclear, military, vehicular or undersea repeater use. February 2004 K4S28323LF - F(H)E/N/S/C/L/R Mobile-SDRAM FUNCTIONAL BLOCK DIAGRAM I/O Control Data Input Register Bank Select 1M x 32 1M x 32 Output Buffer Sense AMP Row Decoder Row Buffer Refresh Counter ADD Address Register CLK 1M x 32 LWE LDQM DQi 1M x 32 Col. Buffer LCBR LRAS Column Decoder Latency & Burst Length LCKE Programming Register LRAS LCBR LWE LCAS LWCBR LDQM Timing Register CLK CKE CS RAS CAS WE DQM February 2004 K4S28323LF - F(H)E/N/S/C/L/R Mobile-SDRAM Package Dimension and Pin Configuration < Top View*2 > < Bottom View*1 > E1 9 8 7 6 5 90Ball(6x15) FBGA 4 3 2 1 1 2 3 7 8 9 A DQ26 DQ24 VSS VDD DQ23 DQ21 B B DQ28 VDDQ VSSQ VDDQ VSSQ DQ19 C C VSSQ DQ27 DQ25 DQ22 DQ20 VDDQ D D VSSQ DQ29 DQ30 DQ17 DQ18 VDDQ E VDDQ DQ31 NC NC DQ16 VSSQ F VSS DQM3 A3 A2 DQM2 VDD G A4 A5 A6 A10 A0 A1 e A D E F D1 G H J K D/2 L M N P R H A7 A8 NC NC BA1 A11 J CLK CKE A9 BA0 CS RAS K DQM1 NC NC CAS WE DQM0 L VDDQ DQ8 VSS VDD DQ7 VSSQ M VSSQ DQ10 DQ9 DQ6 DQ5 VDDQ N VSSQ DQ12 DQ14 DQ1 DQ3 VDDQ P DQ11 VDDQ VSSQ VDDQ VSSQ DQ4 R DQ13 DQ15 VSS VDD DQ0 DQ2 E E/2 A A1 Substrate(2Layer) z b < Top View*2 > #A1 Ball Origin Indicator Pin Name Pin Function CLK System Clock CS Chip Select CKE Clock Enable A0 ~ A11 Address BA0 ~ BA1 Bank Select Address RAS Row Address Strobe CAS Column Address Strobe WE Write Enable DQM0 ~ DQM3 Data Input/Output Mask DQ0 ~ 31 Data Input/Output SAMSUNG Week K4S28323LF-XXXX VDD/VSS Power Supply/Ground VDDQ/VSSQ Data Output Power/Ground [Unit:mm] Symbol Min Typ Max A - 1.10 1.20 A1 0.30 0.35 0.40 E - 8.00 - E1 - 6.40 - D - 13.00 - D1 - 11.20 - e - 0.80 - b 0.40 0.45 0.50 z - - 0.10 February 2004 K4S28323LF - F(H)E/N/S/C/L/R Mobile-SDRAM ABSOLUTE MAXIMUM RATINGS Parameter Symbol Value Unit Voltage on any pin relative to Vss VIN, VOUT -1.0 ~ 3.6 V Voltage on VDD supply relative to Vss VDD, VDDQ -1.0 ~ 3.6 V TSTG -55 ~ +150 °C Power dissipation PD 1.0 W Short circuit current IOS 50 mA Storage temperature NOTES: Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded. Functional operation should be restricted to recommended operating condition. Exposure to higher than recommended voltage for extended periods of time could affect device reliability. DC OPERATING CONDITIONS Recommended operating conditions (Voltage referenced to VSS = 0V, TA = -25 to 85°C for Extended, -25 to 70°C for Commercial) Parameter Symbol Min Typ Max Unit VDD 2.3 2.5 2.7 V 2.3 2.5 2.7 V 1.65 - 2.7 V 1 Supply voltage VDDQ Note Input logic high voltage VIH 0.8 x VDDQ - VDDQ + 0.3 V 2 Input logic low voltage VIL -0.3 0 0.3 V 3 Output logic high voltage VOH VDDQ -0.2 - - V IOH = -0.1mA Output logic low voltage VOL - - 0.2 V IOL = 0.1mA ILI -10 - 10 uA 4 Input leakage current NOTES : 1. Samsung can support VDDQ 2.5V(in general case) and 1.8V(in specific case) for VDD 2.5V products. Please contact to the memory marketing team in Samsung Electronics when considering the use of VDDQ 1.8V(Min 1.65V). 2. VIH (max) = 3.0V AC.The overshoot voltage duration is ≤ 3ns. 3. VIL (min) = -1.0V AC. The undershoot voltage duration is ≤ 3ns. 4. Any input 0V ≤ VIN ≤ VDDQ. Input leakage currents include Hi-Z output leakage for all bi-directional buffers with tri-state outputs. 5. Dout is disabled, 0V ≤ VOUT ≤ VDDQ. CAPACITANCE (VDD = 2.5V, TA = 23°C, f = 1MHz, VREF =0.9V ± 50 mV) Pin Symbol Min Max Unit CCLK - 4.0 pF RAS, CAS, WE, CS, CKE CIN - 4.0 pF DQM CIN - 4.0 pF Address CADD - 4.0 pF DQ0 ~ DQ31 COUT - 6.0 pF Clock Note February 2004 K4S28323LF - F(H)E/N/S/C/L/R Mobile-SDRAM DC CHARACTERISTICS Recommended operating conditions (Voltage referenced to VSS = 0V, TA = -25 to 85°C for Extended, -25 to 70°C for Commercial) Version Parameter Operating Current (One Bank Active) Precharge Standby Current in power-down mode Symbol ICC1 ICC2P Active Standby Current in power-down mode Active Standby Current in non power-down mode (One Bank Active) Operating Current (Burst Mode) Refresh Current Burst length = 1 tRC ≥ tRC(min) IO = 0 mA -60 -75 -1H -1L 90 75 75 70 CKE ≤ VIL(max), tCC = 10ns ICC3NS mA 1 mA CKE ≥ VIH(min), CS ≥ VIH(min), tCC = 10ns Input signals are changed one time during 20ns 15 mA 7 CKE ≤ VIL(max), tCC = 10ns 5 mA ICC3PS CKE & CLK ≤ VIL(max), tCC = ∞ ICC3N Note 0.5 CKE ≥ VIH(min), CLK ≤ VIL(max), tCC = ∞ ICC2NS Input signals are stable ICC3P Unit 0.5 ICC2PS CKE & CLK ≤ VIL(max), tCC = ∞ ICC2N Precharge Standby Current in non power-down mode Test Condition 5 CKE ≥ VIH(min), CS ≥ VIH(min), tCC = 10ns Input signals are changed one time during 20ns 25 mA CKE ≥ VIH(min), CLK ≤ VIL(max), tCC = ∞ Input signals are stable 20 mA ICC4 IO = 0 mA Page burst 4Banks Activated tCCD = 2CLKs 100 75 70 70 mA 1 ICC5 tRC ≥ tRC(min) 170 150 140 120 mA 2 -E/C 1500 4 uA -N/L Self Refresh Current ICC6 CKE ≤ 0.2V 600 5 Internal TCSR Max 40 Max 85/70 Full Array 300 600 1/2 of Full Array 260 450 1/4 of Full Array 240 350 °C 3 uA 6 -S/R NOTES: 1. Measured with outputs open. 2. Refresh period is 64ms. 3. Internal TCSR can be supported. In commercial Temp : Max 40°C/Max 70°C, In extended Temp : Max 40°C/Max 85°C 4. K4S28323LF-F(H)E/C** 5. K4S28323LF-F(H)N/L** 6. K4S28323LF-F(H)S/R** 7. Unless otherwise noted, input swing IeveI is CMOS(VIH /VIL=VDDQ/VSSQ). February 2004 K4S28323LF - F(H)E/N/S/C/L/R Mobile-SDRAM AC OPERATING TEST CONDITIONS(VDD = 2.5V ± 0.2V, TA = -25 to 85°C for Extended, Parameter AC input levels (Vih/Vil) -25 to 70°C for Commercial) Value Unit 0.9 x VDDQ / 0.2 V 0.5 x VDDQ V tr/tf = 1/1 ns 0.5 x VDDQ V Input timing measurement reference level Input rise and fall time Output timing measurement reference level Output load condition See Figure 2 VDDQ 500Ω Vtt=0.5 x VDDQ VOH (DC) = VDDQ - 0.2V, IOH = -0.1mA Output VOL (DC) = 0.2V, IOL = 0.1mA 500Ω 50Ω 30pF Output Z0=50Ω 30pF Figure 1. DC Output Load Circuit Figure 2. AC Output Load Circuit February 2004 K4S28323LF - F(H)E/N/S/C/L/R Mobile-SDRAM OPERATING AC PARAMETER (AC operating conditions unless otherwise noted) Version Parameter Symbol -60 -75 -1H -1L Unit Note Row active to row active delay tRRD(min) 12 15 19 19 ns 1 RAS to CAS delay tRCD(min) 18 19 19 24 ns 1 Row precharge time tRP(min) 18 19 19 24 ns 1 tRAS(min) 42 45 50 60 ns 1 Row active time tRAS(max) Row cycle time tRC(min) Last data in to row precharge tRDL(min) Last data in to Active delay 100 ns 1 2 CLK 2 tDAL(min) tRDL + tRP - 3 Last data in to new col. address delay tCDL(min) 1 CLK 2 Last data in to burst stop tBDL(min) 1 CLK 2 Col. address to col. address delay tCCD(min) 1 CLK 4 ea 5 Number of valid output data CAS latency=3 Number of valid output data CAS latency=2 Number of valid output data CAS latency=1 60 64 us 69 84 2 - 1 - 0 NOTES: 1. The minimum number of clock cycles is determined by dividing the minimum time required with clock cycle time and then rounding off to the next higher integer. 2. Minimum delay is required to complete write. 3. Minimum tRDL=2CLK and tDAL(= tRDL + tRP) is required to complete both of last data write command(tRDL) and precharge command(tRP). 4. All parts allow every cycle column address change. 5. In case of row precharge interrupt, auto precharge and read burst stop. February 2004 K4S28323LF - F(H)E/N/S/C/L/R Mobile-SDRAM AC CHARACTERISTICS(AC operating conditions unless otherwise noted) - 60 Parameter - 75 -1H -1L Symbol Min Max Min Max Max Unit Note ns 1 ns 1,2 ns 2 Max tCC 6.0 CAS latency=2 tCC - CAS latency=1 tCC - CAS latency=3 tSAC 5.4 6 7 7 CAS latency=2 tSAC - 7 7 8 CAS latency=1 tSAC - - - 20 CAS latency=3 tOH 2.5 2.5 2.5 2.5 CAS latency=2 tOH - 2.5 2.5 2.5 CAS latency=1 tOH - - - 2.5 CLK high pulse width tCH 2.5 2.5 3 3 ns 3 CLK low pulse width tCL 2.5 2.5 3 3 ns 3 Input setup time tSS 2.0 2.0 2.5 2.5 ns 3 Input hold time tSH 1.0 1.0 1.5 1.5 ns 3 CLK to output in Low-Z tSLZ 1 1 1 1 ns 2 CLK to valid output delay Output data hold time CAS latency=3 CLK to output in Hi-Z CAS latency=2 CAS latency=1 tSHZ 1000 9.5 9.5 Min CAS latency=3 CLK cycle time 7.5 Min 1000 - 9.5 9.5 1000 - 12 1000 25 5.4 6 7 7 - 7 7 8 - - - 20 ns NOTES : 1. Parameters depend on programmed CAS latency. 2. If clock rising time is longer than 1ns, (tr/2-0.5)ns should be added to the parameter. 3. Assumed input rise and fall time (tr & tf) = 1ns. If tr & tf is longer than 1ns, transient time compensation should be considered, i.e., [(tr + tf)/2-1]ns should be added to the parameter. February 2004 K4S28323LF - F(H)E/N/S/C/L/R Mobile-SDRAM SIMPLIFIED TRUTH TABLE COMMAND Register CKEn-1 CKEn Mode Register Set H Auto Refresh X Entry Self Refresh RAS CAS WE L L L L X OP CODE L L L H X X L H H H Exit 3 L L 3 H 3 X H X X X X 3 Bank Active & Row Addr. H X L L H H X V Read & Auto Precharge Disable Column Address Auto Precharge Enable H X L H L H X V Write & Auto Precharge Disable Column Address Auto Precharge Enable H X L H L L X V Burst Stop H X L H H L X H Entry Column Address (A0~A7) H L X L L H L H H X X X L V V V X X X X H X X X L H H H H X X X L V V V L Exit L H Entry H L Precharge Power Down Mode Column Address (A0~A7) H X V L X H X All Banks Clock Suspend or Active Power Down Row Address L Bank Selection Precharge Note 1, 2 H H Refresh DQM BA0,1 A10/AP A11, A9 ~ A0 CS 4 4, 5 4 4, 5 6 X X X X X X Exit L DQM H No Operation Command H H X X H X X X L H H H X V X X X 7 (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 the 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. Partial self refresh can be issued only after setting partial self refresh mode of EMRS. 4. BA0 ~ BA1 : Bank select addresses. 5. 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. 6. Burst stop command is valid at every burst length. 7. DQM sampled at the positive going edge of CLK masks the data-in at that same CLK in write operation (Write DQM latency is 0), but in read operation, it makes the data-out Hi-Z state after 2 CLK cycles. (Read DQM latency is 2). February 2004 K4S28323LF - F(H)E/N/S/C/L/R Mobile-SDRAM A. MODE REGISTER FIELD TABLE TO PROGRAM MODES Register Programmed with Normal MRS Address Function BA0 ~ BA1 A11 ~ A10/AP A9*2 "0" Setting for Normal MRS RFU*1 W.B.L A8 A7 A6 Test Mode A5 A4 A3 CAS Latency A2 BT A1 A0 Burst Length Normal MRS Mode Test Mode CAS Latency Burst Type Burst Length A8 A7 Type A6 A5 A4 Latency A3 Type A2 A1 A0 BT=0 BT=1 0 0 Mode Register Set 0 0 0 Reserved 0 Sequential 0 0 0 1 1 0 1 Reserved 0 0 1 1 1 Interleave 0 0 1 2 2 1 0 Reserved 0 1 0 2 0 1 0 4 4 1 1 Reserved 0 1 1 3 0 1 1 8 8 Write Burst Length 1 0 0 Reserved 1 0 0 Reserved Reserved 1 0 1 Reserved Reserved 1 1 0 Reserved Reserved 1 1 1 Full Page Reserved A9 Length 1 0 1 Mode Select BA1 BA0 Setting for Normal MRS Reserved 0 0 Burst 1 1 0 Reserved 1 Single Bit 1 1 1 Reserved Mode 0 Full Page Length x32 : 128Mb(256) Register Programmed with Extended MRS Address BA1 Function BA0 A11 ~ A10/AP Mode Select A9 A8 A7 A6 A5 A4 DS RFU*1 A3 A2 A1 A0 PASR RFU*1 EMRS for PASR(Partial Array Self Ref.) & DS(Driver Strength) Mode Select Driver Strength PASR BA1 BA0 Mode A6 A5 Driver Strength A2 A1 A0 Size of Refreshed Array 0 0 Normal MRS 0 0 Full 0 0 0 Full Array 0 1 Reserved 0 1 1/2 0 0 1 1/2 of Full Array 1 0 EMRS for Mobile SDRAM 1 0 Reserved 0 1 0 1/4 of Full Array 1 1 Reserved 1 1 Reserved 0 1 1 Reserved 1 0 0 Reserved 1 0 1 Reserved 1 1 0 Reserved 1 1 1 Reserved Reserved Address A11~A10/AP A9 A8 A7 A4 A3 0 0 0 0 0 0 NOTES: 1. RFU(Reserved for future use) should stay "0" during MRS cycle. 2. If A9 is high during MRS cycle, "Burst Read Single Bit Write" function will be enabled. February 2004 K4S28323LF - F(H)E/N/S/C/L/R Mobile-SDRAM Partial Array Self Refresh 1. In order to save power consumption, Mobile SDRAM has PASR option. 2. Mobile SDRAM supports 3 kinds of PASR in self refresh mode : Full Array, 1/2 of Full Array and 1/4 of Full Array. BA1=0 BA0=0 BA1=0 BA0=1 BA1=0 BA0=0 BA1=0 BA0=1 BA1=0 BA0=0 BA1=0 BA0=1 BA1=1 BA0=0 BA1=1 BA0=1 BA1=1 BA0=0 BA1=1 BA0=1 BA1=1 BA0=0 BA1=1 BA0=1 - Full Array - 1/4 Array - 1/2 Array Partial Self Refresh Area Temperature Compensated Self Refresh 1. In order to save power consumption, Mobile-DRAM includes the internal temperature sensor and control units to control the self refresh cycle automatically according to the two temperature range : Max 40 °C and Max 85 °C(for Extended), Max 70 °C(for Commercial). 2. If the EMRS for external TCSR is issued by the controller, this EMRS code for TCSR is ignored. Self Refresh Current (Icc6) Temperature Range - S/R - E/C Max 85/70 °C Max 40 °C 1500 Unit - N/L Full Array 1/2 of Full Array 1/4 of Full Array 600 450 350 300 260 240 600 uA B. POWER UP SEQUENCE 1. Apply power and attempt to maintain CKE at a high state and all other inputs may be undefined. - Apply VDD before or at the same time as VDDQ. 2. Maintain stable power, stable clock and NOP input condition for a minimum of 200us. 3. Issue precharge commands for all banks of the devices. 4. Issue 2 or more auto-refresh commands. 5. Issue a mode register set command to initialize the mode register. 6. Issue a extended mode register set command to define DS or PASR operating type of the device after normal MRS. EMRS cycle is not mandatory and the EMRS command needs to be issued only when DS or PASR is used. The default state without EMRS command issued is the full driver strength and full array refreshed. The device is now ready for the operation selected by EMRS. For operating with DS or PASR, set DS or PASR mode in EMRS setting stage. In order to adjust another mode in the state of DS or PASR mode, additional EMRS set is required but power up sequence is not needed again at this time. In that case, all banks have to be in idle state prior to adjusting EMRS set. February 2004 K4S28323LF - F(H)E/N/S/C/L/R Mobile-SDRAM C. BURST SEQUENCE 1. BURST LENGTH = 4 Initial Address Sequential Interleave A1 A0 0 0 0 1 2 3 0 1 2 3 0 1 1 2 3 0 1 0 3 2 1 0 2 3 0 1 2 3 0 1 1 1 3 0 1 2 3 2 1 0 2. BURST LENGTH = 8 Initial Address Sequential Interleave A2 A1 A0 0 0 0 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 0 1 1 2 3 4 5 6 7 0 1 0 3 2 5 4 7 6 0 1 0 2 3 4 5 6 7 0 1 2 3 0 1 6 7 4 5 0 1 1 3 4 5 6 7 0 1 2 3 2 1 0 7 6 5 4 1 0 0 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 1 0 1 5 6 7 0 1 2 3 4 5 4 7 6 1 0 3 2 1 1 0 6 7 0 1 2 3 4 5 6 7 4 5 2 3 0 1 1 1 1 7 0 1 2 3 4 5 6 7 6 5 4 3 2 1 0 February 2004