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| K1S2816BCM Document Title 8Mx16 bit Page Mode Uni-Transistor Random Access Memory UtRAM Revision History Revision No. History 0.0 Initial Draft - Design Target Draft Date April 12, 2004 Remark Preliminary 0.1 Revised July 12, 2004 - Updated "TIMING WAVEFORM OF WRITE CYCLE(1) (WE Controlled)" in page 8 and added tWHP(WE High Pulse Width) parameter as Min.5ns - Added comment on standby current(ISB1) measure condition as "Standby mode is supposed to be set up after at least one active operation after power up. ISB1 is measured after 60ms from the time when standby mode is set up." - Changed ISB1 value(< 85C) from 200A into 250A Finalize - Changed tOH from 5ns to 3ns April 06, 2005 Preliminary 1.0 Final The attached datasheets are provided by SAMSUNG Electronics. SAMSUNG Electronics CO., LTD. reserve the right to change the specifications and products. SAMSUNG Electronics will answer to your questions about device. If you have any questions, please contact the SAMSUNG branch offices. -1- Revision 1.0 April 2005 K1S2816BCM 8M x 16 bit Page Mode Uni-Transistor CMOS RAM FEATURES * * * * * UtRAM GENERAL DESCRIPTION The K1S2816BCM is fabricated by SAMSUNGs advanced CMOS technology using one transistor memory cell. The device supports 4 page read operation and Industrial temperature range. The device supports dual chip selection for user interface. The device also supports internal Temperature Compensated Self Refresh mode for the standby power saving at room temperature range. Process Technology: CMOS Organization: 8M x16 bit Power Supply Voltage: 1.7~2.0V Three State Outputs Compatible with Low Power SRAM * Support 4 page read mode * Package Type: TBD PRODUCT FAMILY Product Family Operating Temp. Vcc Range Speed (tRC) Power Dissipation Standby (ISB1, Max.) 130A(<40C) K1S2816BCM-I Industrial(-40~85C) 1.7~2.0V 70ns 250A(<85C) 40mA TBD Operating (ICC2, Max.) PKG Type PIN DESCRIPTION FUNCTIONAL BLOCK DIAGRAM Clk gen. Precharge circuit. Vcc Vss Row Addresses Row select Memory array TBD I/O1~I/O8 Data cont Data cont Data cont I/O Circuit Column select I/O9~I/O16 Column Addresses CS1 CS2 OE WE UB Control Logic Name Function Name Vcc Vss UB LB NC Function Power Ground Upper Byte(I/O9~16) Lower Byte(I/O1~8) No Connection1) LB CS1,CS2 Chip Select Inputs OE WE A0~A22 Output Enable Input Write Enable Input Address Inputs I/O1~I/O16 Data Inputs/Outputs 1) Reserved for future use SAMSUNG ELECTRONICS CO., LTD. reserves the right to change products and specifications without notice. -2Revision 1.0 April 2005 K1S2816BCM POWER UP SEQUENCE UtRAM During the Power Up mode, the standby current can not be guaranteed. To get the stable standby current level, at least one cycle of active operation should be implemented regardless of wait time duration. To get the appropriate device operation, be sure to keep the following power up sequence. 1. Apply power. 2. Maintain stable power(Vcc min.=1.7V) for a minimum 200s with CS1=high.or CS2=low. TIMING WAVEFORM OF POWER UP(1) (CS1 controlled) Min. 200s VCC(Min) VCC CS1 CS2 Power Up Mode POWER UP(1) Normal Operation 1. After VCC reaches VCC(Min.), wait 200s with CS1 high. Then the device gets into the normal operation. TIMING WAVEFORM OF POWER UP(2) (CS2 controlled) VCC(Min) VCC Min. 200s CS1 CS2 Power Up Mode Normal Operation POWER UP(2) 1. After VCC reaches VCC(Min.), wait 200s with CS2 low. Then the device gets into the normal operation. -3- Revision 1.0 April 2005 K1S2816BCM FUNCTIONAL DESCRIPTION CS1 H X1) X 1) UtRAM CS2 X 1) OE X 1) WE X 1) LB X 1) UB X 1) I/O1~8 High-Z High-Z High-Z High-Z High-Z Dout High-Z Dout Din High-Z Din I/O9~16 High-Z High-Z High-Z High-Z High-Z High-Z Dout Dout High-Z Din Din Mode Deselected Deselected Deselected Output Disabled Output Disabled Lower Byte Read Upper Byte Read Word Read Lower Byte Write Upper Byte Write Word Write Power Standby Standby Standby Active Active Active Active Active Active Active Active L X1) H H H H H H H H X1) X 1) X1) X 1) X1) H L X1) L H L L H L X1) H X 1) L L L L L L L L H H L L L X1) X1) X1) H H H H H L L L L H L L H L L 1. X means dont care.(Must be low or high state) ABSOLUTE MAXIMUM RATINGS1) Item Voltage on any pin relative to Vss Voltage on Vcc supply relative to Vss Power Dissipation Storage temperature Operating Temperature Symbol VIN, VOUT VCC PD TSTG TA Ratings -0.2 to VCC+0.3V -0.2 to 2.5V 1.0 -65 to 150 -40 to 85 Unit V V W C C 1. Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. Functional operation should be restricted to be used under recommended operating condition. Exposure to absolute maximum rating conditions longer than 1 second may affect reliability. -4- Revision 1.0 April 2005 K1S2816BCM PRODUCT LIST Industrial Temperature Product(-40~85C) Part Name K1S2816BCM Function 70ns, 1.8V UtRAM RECOMMENDED DC OPERATING CONDITIONS1) Item Supply voltage Ground Input high voltage Input low voltage 1. TA=-40 to 85C, otherwise specified. 2. Overshoot: Vcc+1.0V in case of pulse width 20ns. 3. Undershoot: -1.0V in case of pulse width 20ns. 4. Overshoot and undershoot are sampled, not 100% tested. Symbol Vcc Vss VIH VIL Min 1.7 0 0.8 x VCC -0.23) Typ 1.85 0 - Max 2.0 0 Vcc+0.22) 0.4 Unit V V V V CAPACITANCE1)(f=1MHz, TA=25C) Item Input capacitance Input/Output capacitance 1. Capacitance is sampled, not 100% tested. Symbol CIN CIO Test Condition VIN=0V VIO=0V Min - Max 8 10 Unit pF pF DC AND OPERATING CHARACTERISTICS Item Input leakage current Output leakage current Average operating current Output low voltage Output high voltage Symbol Test Conditions VIN=Vss to Vcc CS1=VIH or CS2=VIL or OE=VIH or WE=VIL or LB=UB=VIH, VIO=Vss to Vcc Cycle time=tRC+3tPC, IIO=0mA, 100% duty, CS1=VIL, CS2=VIH, LB=VIL or/and UB=VIL, VIN=VIH or VIL IOL=0.1mA IOH=-0.1mA Other inputs=0~Vcc 1) CS1VCC-0.2V, CS2VCC-0.2V(CS1 controlled) or 2) 0V CS2 0.2V(CS2 controlled) < 40C < 85C Min -1 -1 1.4 - Typ - Max 1 1 40 0.2 130 250 Unit A A mA V V A A ILI ILO ICC2 VOL VOH Standby Current(CMOS) ISB11) 1. Standby mode is supposed to be set up after at least one active operation.after power up. ISB1 is measured after 60ms from the time when standby mode is set up. -5- Revision 1.0 April 2005 K1S2816BCM AC OPERATING CONDITIONS TEST CONDITIONS(Test Load and Test Input/Output Reference) Input pulse level: 0.2 to Vcc-0.2V Input rising and falling time: 3ns Input and output reference voltage: 0.5 x VCC Output load (See right): CL=30pF AC Output Load Circuit UtRAM Vtt=0.5 x VDDQ 50 Dout Z0=50 30pF AC CHARACTERISTICS (Vcc=1.7~2.0V, TA=-40 to 85C) Speed Bins Parameter List Symbol Min Read Cycle Time Address Access Time Chip Select to Output Output Enable to Valid Output UB, LB Access Time Chip Select to Low-Z Output Read UB, LB Enable to Low-Z Output Output Enable to Low-Z Output Chip Disable to High-Z Output UB, LB Disable to High-Z Output Output Disable to High-Z Output Output Hold from Address Change Page Cycle Page Access Time Write Cycle Time Chip Select to End of Write Address Set-up Time Address Valid to End of Write UB, LB Valid to End of Write Write Write Pulse Width WE High Pulse Width Write Recovery Time Write to Output High-Z Data to Write Time Overlap Data Hold from Write Time End Write to Output Low-Z 1. tWP(min)=70ns for continuous write operation over 50 times. 70ns Max 70 70 35 70 25 25 25 20 25 - Units tRC tAA tCO tOE tBA tLZ tBLZ tOLZ tHZ tBHZ tOHZ tOH tPC tPA tWC tCW tAS tAW tBW tWP tWHP tWR tWHZ tDW tDH tOW 70 10 10 5 0 0 0 3 25 70 60 0 60 60 55 5 0 0 30 0 5 1) ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns -6- Revision 1.0 April 2005 K1S2816BCM TIMING DIAGRAMS TIMING WAVEFORM OF READ CYCLE(1)(Address Controlled, CS1=OE=VIL, CS2=WE=VIH, UB or/and LB=VIL) tRC Address tOH Data Out Previous Data Valid tAA Data Valid UtRAM TIMING WAVEFORM OF READ CYCLE(2)(WE=VIH) tRC Address tAA CS1 tCO tOH CS2 tHZ tBA UB, LB tBHZ tOE OE tOLZ tBLZ tLZ Data Valid tOHZ Data out High-Z TIMING WAVEFORM OF PAGE CYCLE(READ ONLY) A22~A2 Valid Address A1~A0 Valid Address Valid Address Valid Address Valid Address tAA CS1 tPC CS2 tCO OE tOE DQ15~DQ0 (READ CYCLE) 1. tHZ and tOHZ are defined as the time at which the outputs achieve the open circuit conditions and are not referenced to output voltage levels. 2. At any given temperature and voltage condition, tHZ(Max.) is less than tLZ(Min.) both for a given device and from device to device interconnection. 3. tOE(max) is met only when OE becomes enabled after tAA(max). 4. If invalid address signals shorter than min. tRC are continuously repeated for over 4us, the device needs a normal read timing(tRC) or needs to sustain standby state for min. tRC at least once in every 4us. tHZ tPA Data Valid Data Valid Data Valid Data Valid tOHZ High Z -7- Revision 1.0 April 2005 K1S2816BCM TIMING WAVEFORM OF WRITE CYCLE(1) (WE Controlled) tWC Address tAW tCW CS tBW UB, LB tWP WE tAS tDH tDW Data Valid tWHZ Data out Data Undefined High-Z tOW tWHZ Data Undefined High-Z tWHP tAS tDH tDW Data Valid tOW tWP tBW tWR tAW tCW tWR tWC UtRAM Data in Data Undefined TIMING WAVEFORM OF WRITE CYCLE(2) (CS1 Controlled) tWC Address tAS CS1 tAW CS2 tBW UB, LB tWP WE tDW Data in Data Valid tDH tCW tWR Data out High-Z -8- Revision 1.0 April 2005 K1S2816BCM TIMING WAVEFORM OF WRITE CYCLE(3) (CS2 Controlled) tWC Address tAS CS1 tAW CS2 tBW UB, LB tWP(1) WE tDW Data in Data Valid tDH tCW tWR UtRAM Data out High-Z TIMING WAVEFORM OF WRITE CYCLE(4) (UB, LB Controlled) tWC Address tCW CS1 tAW CS2 UB, LB tAS WE tDW Data in Data Valid tDH tBW tWP tWR Data out NOTES (WRITE CYCLE) High-Z 1. A write occurs during the overlap(tWP) of low CS1 and low WE. A write begins when CS1 goes low and WE goes low with asserting UB or LB for single byte operation or simultaneously asserting UB and LB for double byte operation. A write ends at the earliest transition when CS1 goes high and WE goes high. The tWP is measured from the beginning of write to the end of write. 2. tCW is measured from the CS1 going low to the end of write. 3. tAS is measured from the address valid to the beginning of write. 4. tWR is measured from the end of write to the address change. tWR is applied in case a write ends with CS1 or WE going high. 5. tWP(min)=70ns for continuous write operation over 50 times. -9- Revision 1.0 April 2005 K1S2816BCM PACKAGE DIMENSION UtRAM TBD - 10 - Revision 1.0 April 2005 |
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