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dram module kmm372c80(8)3ck/cs performance range speed t rac t cac t rc t pc -5 50ns 18ns 90ns 35ns -6 60ns 20ns 110ns 40ns kmm372c80(8)3ck/cs fast page mode 8mx72 dram dimm with ecc using 8mx8, 4k & 8k refresh, 5v the samsung kmm372c80(8)3c is a 8mx72bits dynamic ram high density memory module. the samsung kmm372c80(8)3c consists of nine cmos 8mx8bits drams in soj/tsop-ii 400mil packages and two 16 bits driver ic in tssop package mounted on a 168-pin glass-epoxy sub- strate. a 0.1 or 0.22uf decoupling capacitor is mounted on the printed circuit board for each dram. the kmm372c80(8)3c is a dual in-line memory module and is intended for mounting into 168 pin edge connector sockets. general description pd note :pd & id terminals must each be pulled up through a resistor to v cc at the next higher level assembly. pds will be either open (nc) or driven to v ss via on-board buffer circuits. id note : ids will be either open (nc) or connected directly to v ss without a buffer. ? part identification ? fast page mode operation ? cas -before- ras refresh capability ? ras -only and hidden refresh capability ? ttl compatible inputs and outputs ? single 5v 10% power supply ? jedec standard pinout & buffered pdpin ? buffered input except ras and dq ? pcb : height(1250mil), single sided component part number pkg ref. cbr ref. ror ref. kmm372c803ck soj 4k 4k/64ms kmm372c803cs tsop kmm372c883ck soj 8k 4k/64ms 8k/64ms KMM372C883CS tsop pin names pins marked * are not used in this module. pin names function a0, b0, a1 - a11 address input(4k ref.) a0, b0, a1 - a12 address input(8k ref.) dq0 - dq71 data in/out w0 , w2 read/write enable oe0 , oe2 output enable ras0 , ras2 row address strobe cas0 , cas4 column address strobe v cc power(+5v) v ss ground nc no connection pde presence detect enable pd1 - 8 presence detect id0 - 1 id bit rsvd reserved use rfu reserved for future use pd & id table pd : 0 for vol of drive ic & 1 for n.c id : 0 for vss & 1 for n.c pin 50ns 60ns pd1 pd2 pd3 pd4 pd5 pd6 pd7 pd8 1 0 1 1 0 0 0 0 1 0 1 1 0 1 1 0 id0 id1 0 0 0 0 pin configurations note : a12 is used for only kmm372c883ck/cs (8k ref.) pin 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 front v ss dq0 dq1 dq2 dq3 v cc dq4 dq5 dq6 dq7 dq8 v ss dq9 dq10 dq11 dq12 dq13 v cc dq14 dq15 dq16 dq17 v ss rsvd rsvd v cc w0 cas0 pin 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 front * cas2 ras0 oe0 v ss a0 a2 a4 a6 a8 a10 a12 v cc rfu rfu v ss oe2 ras2 cas4 * cas6 w2 v cc rsvd rsvd dq18 dq19 v ss dq20 dq21 pin 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 front dq22 dq23 v cc dq24 rfu rfu rfu rfu dq25 dq26 dq27 v ss dq28 dq29 dq30 dq31 v cc dq32 dq33 dq34 dq35 v ss pd1 pd3 pd5 pd7 id0 v cc pin 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 back v ss dq36 dq37 dq38 dq39 v cc dq40 dq41 dq42 dq43 dq44 v ss dq45 dq46 dq47 dq48 dq49 v cc dq50 dq51 dq52 dq53 v ss rsvd rsvd v cc rfu * cas1 pin 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 back * cas3 * ras1 rfu v ss a1 a3 a5 a7 a9 a11 *a13 v cc rfu b0 v ss rfu * ras3 * cas5 * cas7 pde v cc rsvd rsvd dq54 dq55 v ss dq56 dq57 pin 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 back dq58 dq59 v cc dq60 rfu rfu rfu rfu dq61 dq62 dq63 v ss dq64 dq65 dq66 dq67 v cc dq68 dq69 dq70 dq71 v ss pd2 pd4 pd6 pd8 id1 v cc features
dram module kmm372c80(8)3ck/cs functional block diagram vcc vss 0.1 or 0.22uf capacitor under each dram to all drams ras0 w0 oe0 a0 dq0 dq1 dq2 dq3 dq4 dq5 dq6 dq7 u0 cas0 a1-a11(a12) ras2 w2 oe2 b0 cas4 a1-a11(a12) dq0 dq1 dq2 dq3 dq4 dq5 dq6 dq7 note : a12 is used for only kmm372c880ck/cs(8k ref.) a0 b0 a1-a11(a12) w0 , oe0 w2 , oe2 u0-u4 u5-u8 u0-u8 u0-u4 u5-u8 dq0 dq1 dq2 dq3 dq4 dq5 dq6 dq7 u1 dq8 dq9 dq10 dq11 dq12 dq13 dq14 dq15 dq0 dq1 dq2 dq3 dq4 dq5 dq6 dq7 u2 dq16 dq17 dq18 dq19 dq20 dq21 dq22 dq23 dq0 dq1 dq2 dq3 dq4 dq5 dq6 dq7 u3 dq24 dq25 dq26 dq27 dq28 dq29 dq30 dq31 dq0 dq1 dq2 dq3 dq4 dq5 dq6 dq7 u4 dq32 dq33 dq34 dq35 dq36 dq37 dq38 dq39 dq0 dq1 dq2 dq3 dq4 dq5 dq6 dq7 u5 dq40 dq41 dq42 dq43 dq44 dq45 dq46 dq47 dq0 dq1 dq2 dq3 dq4 dq5 dq6 dq7 u6 dq48 dq49 dq50 dq51 dq52 dq53 dq54 dq55 dq0 dq1 dq2 dq3 dq4 dq5 dq6 dq7 dq56 dq57 dq58 dq59 dq60 dq61 dq62 dq63 dq0 dq1 dq2 dq3 dq4 dq5 dq6 dq7 u8 dq64 dq65 dq66 dq67 dq68 dq69 dq70 dq71 u7
dram module kmm372c80(8)3ck/cs * note : i cc1 , i cc3 , i cc4 and i cc6 are dependent on output loading and cycle rates. specified values are obtained with the output open. i cc is specified as an average current. in i cc1 and i cc3 , address can be changed maximum once while ras =v il . in i cc4 , address can be changed maximum once within one fast page mode cycle time, t pc . absolute maximum ratings * * permanent device damage may occur if absolute maximum ratings are exceeded. functional operation should be restricted to the conditions as detailed in the operational sections of this data sheet. exposure to absolute maximum rating conditions for in tended periods may affect device reliability. item symbol rating unit voltage on any pin relative v ss voltage on v cc supply relative to v ss storage temperature power dissipation short circuit output current v in , v out v cc t stg p d i os -1 to +7.0 -1 to +7.0 -55 to +125 9 50 v v c w ma recommended operating conditions (voltage referenced to v ss , t a = 0 to 70 c) *1 : v cc +2.0v at pulse width 20ns, which is measured at v cc . *2 : -2.0v at pulse width 20ns, which is measured at v ss . item symbol min typ max unit supply voltage ground input high voltage input low voltage v cc v ss v ih v il 4.5 0 2.4 -1.0 *2 5.0 0 - - 5.5 0 v cc *1 0.8 v v v v dc and operating characteristics (recommended operating conditions unless otherwise noted) i cc1 * i cc2 i cc3 * i cc4 * i cc5 i cc6 * i( il) i( ol) v oh v ol symbol speed kmm372c803ck/cs kmm372c883ck/cs unit min max min max i cc1 -5 -6 - -- 1080 990 - - 810 720 ma ma i cc2 don t care - 100 - 100 ma i cc3 -5 -6 - - 1080 990 - - 810 720 ma ma i cc4 -5 -6 - - 630 540 - - 540 450 ma ma i cc5 don t care - 30 - 30 ma i cc6 -5 -6 - - 1080 990 - - 810 720 ma ma i i(l) i o(l) don t care -10 -5 10 5 -10 -5 10 5 ua ua v oh v ol don t care 2.4 - - 0.4 2.4 - - 0.4 v v : operating current * ( ras , cas , address cycling @ t rc =min) : standby current ( ras = cas = w =v ih ) : ras only refresh current * ( cas =v ih , ras cycling @ t rc =min) : fast page mode current * ( ras =v il , cas cycling : t pc =min) : standby current ( ras = cas = w =vcc-0.2v) : cas -before- ras refresh current * ( ras and cas cycling @ t rc =min) : input leakage current (any input 0 v in vcc+0.5v, all other pins not under test=0 v) : output leakage current(data out is disabled, 0v v out vcc) : output high voltage level (i oh = -5ma) : output low voltage level (i ol = 4.2ma)
dram module kmm372c80(8)3ck/cs capacitance (t a = 25 c, f = 1mhz) item symbol min max unit input capacitance[a0, b0, a1 - a12] input capacitance[ w0 , w2 , oe0 , oe2 ] input capacitance[ ras0 , ras2 ] input capacitance[ cas0 , cas4 ] input/output capacitance[dq0 - 71] c in1 c in2 c in3 c in4 c dq - - - - - 20 20 45 20 17 pf pf pf pf pf test condition : v ih /v il =2.4/0.8v, v oh /v ol =2.4/0.4v, output loading cl=100pf parameter symbol -5 -6 unit note min max min max random read or write cycle time t rc 90 110 ns read-modify-write cycle time t rwc 133 155 ns access time from ras t rac 50 60 ns 3,4 access time from cas t cac 18 20 ns 3,4,5,11 access time from column address t aa 30 35 ns 3,10,11 cas to output in low-z t clz 5 5 ns 3,11 output buffer turn-off delay t off 5 18 5 20 ns 6,11 transition time(rise and fall) t t 1 50 1 50 ns 2 ras precharge time t rp 30 40 ns ras pulse width t ras 50 10k 60 10k ns ras hold time t rsh 18 20 ns 11 cas hold time t csh 45 55 ns 11 cas pulse width t cas 13 10k 15 10k ns ras to cas delay time t rcd 18 32 18 40 ns 4,11 ras to column address delay time t rad 13 20 13 25 ns 10,11 cas to ras precharge time t crp 10 10 ns 11 row address set-up time t asr 5 5 ns 11 row address hold time t rah 8 8 ns 11 column address set-up time t asc 0 0 ns column address hold time t cah 10 10 ns column address to ras lead time t ral 30 35 ns 11 read command set-up time t rcs 0 0 ns read command hold referencde to cas t rch 0 0 ns 8 read command hold referenced to ras t rrh -2 -2 ns 8,11 write command hold time t wch 10 10 ns write command pulse width t wp 10 10 ns write command to ras lead time t rwl 20 20 ns 11 write command to cas lead time t cwl 13 15 ns data in set-up time t ds -2 -2 ns 9,11 data in hold time t dh 15 15 ns 9,11 refresh period(4k & 8k) t ref 64 64 ms write command set-up time t wcs 0 0 ns 7 cas to w delay time t cwd 36 40 ns 7 column address to w delay time t awd 48 55 ns 7 cas prechange to w delay time t cpwd 53 60 ns 7 ras ro w delay time t rwd 73 85 ns 7,11 ac characteristics (0 c t a 70 c, v cc =5.0v 10%. see notes 1,2.)
dram module kmm372c80(8)3ck/cs notes an initial pause of 200us is required after power-up followed by any 8 ras -only or cas -before- ras refresh cycles before proper device operation is achieved. input voltage levels are v ih /v il . v ih (min) and v il (max) are ref- erence levels for measuring timing of input signals. transi- tion times are measured between v ih (min) and v il (max) and are assumed to be 5ns for all inputs. measured with a load equivalent to 2 ttl loads and 100pf. operation within the t rcd (max) limit insures that t rac (max) can be met. t rcd (max) is specified as a reference point only. if t rcd is greater than the specified t rcd (max) limit, then access time is controlled exclusively by t cac . assumes that t rcd 3 t rcd (max). this parameter defines the time at which the output achieves the open circuit condition and is not referenced to v oh or v ol . t wcs , t rwd , t cwd , t awd and t cpwd are not restrictive operat- ing parameter. they are included in the data sheet as electri- cal characteristics only. if t wcs 3 t wcs (min) the cycle is an early write cycle and the data out pin will remain high imped- ance for the duration of the cycle. if t rwd 3 t rwd (min), t cwd 3 t cwd (min), t awd 3 t awd (min) and t cpwd 3 t cpwd (min). the cycle is a read-modify-write cycle and the data out will contain data read from the selected cell. if neither of the above sets of conditions is satisfied, the condition of data out(at access time) is indeterminate. either t rch or t rrh must be satisfied for a read cycle. these parameters are referenced to the cas leading edge in early write cycles. operation within the t rad (max) limit insures that t rac (max) can be met. t rad (max) is specified as reference point only. if t rad is greater than the specified t rad (max) limit, then access time is controlled by t aa . the timing skew from the dram to the dimm resulted from the addition of buffers. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. ac characteristics (0 c t a 70 c, v cc =5.0v 10%. see notes 1,2.) parameter symbol -5 -6 unit note min max min max cas setup time( cas -before- ras refresh) t csr 10 10 ns 11 cas hold time( cas -before- ras refresh) t chr 8 8 ns 11 ras to cas precharge time t rpc 3 3 ns 11 access time from cas precharge t cpa 35 40 ns 3,11 fast page mode cycle time t pc 35 40 ns fast page mode read-modify-write cycle time t prwc 76 85 ns cas precharge time(fast page cycle) t cp 10 10 ns ras pulse width(fast page cycle) t rasp 50 200k 60 200k ns ras hold time from cas precharge t rhcp 35 40 ns 11 w to ras precharge time(c-b-r refresh) t wrp 15 15 ns 11 w to ras hold time(c-b-r refresh) t wrh 8 8 ns 11 oe access time t oea 18 20 ns 11 oe to data delay t oed 18 20 ns 11 output buffer turn off delay time from oe t oez 5 18 5 20 ns 11 oe command hold time t oeh 13 15 ns pde to valid pd bit t pd 10 10 ns pde to pd bit inactive t pdoff 2 7 2 7 ns present detect read cycle
dram module kmm372c80(8)3ck/cs t crp ras v ih - v il - cas v ih - v il - a v ih - v il - w v ih - v il - oe v ih - v il - v oh - v ol - dq read cycle column address row address t ras t rc t crp t rp t csh t rsh t rcd t cas t ral t rad t asr t rah t asc t cah t aa t oea t cac t clz t rac open data-out t oez t rrh t rch don t care undefined t rcs t off
dram module kmm372c80(8)3ck/cs t wcs write cycle ( early write ) note : d out = open ras v ih - v il - cas v ih - v il - a v ih - v il - w v ih - v il - oe v ih - v il - v ih - v il - dq column address row address t ras t rc t crp t rp t csh t rsh t rcd t cas t ral t rad t asr t rah t asc t cah t crp t wp t ds t dh t wch t cwl t rwl don t care data-in undefined
dram module kmm372c80(8)3ck/cs t oed ras v ih - v il - cas v ih - v il - a v ih - v il - w v ih - v il - oe v ih - v il - v ih - v il - dq column address row address t ras t rc t crp t rp t csh t rsh t rcd t cas t ral t rad t asr t rah t asc t cah t crp data-in t wp don t care write cycle ( oe controlled write ) note : d out = open t cwl t rwl t ds t dh t oeh undefined
dram module kmm372c80(8)3ck/cs ras v ih - v il - cas v ih - v il - a v ih - v il - w v ih - v il - oe v ih - v il - v i/oh - v i/ol - dq row addr t ras t rwc t rp t rsh t rcd t cas t csh t rad t asr t rah t asc t cah t crp valid t wp don t care read - modify - wrtie cycle t rwl t cwl t oez t oea t oed t awd t cwd t rwd data-out undefined valid data-in t rac t aa t cac t clz t ds t dh column address
dram module kmm372c80(8)3ck/cs t rch t oez t clz ras v ih - v il - cas v ih - v il - a v ih - v il - w v ih - v il - oe v ih - v il - v oh - v ol - dq column address row addr t rhcp t rasp t cas t asc t rad t asr t rah t asc t cah t crp valid don t care fast page read cycle t oez t rrh data-out undefined valid data-out note : d out = open column address column address t rsh t cas t rcd t pc ? t csh t cah t asc t cah ? ? ? t rch ? t rcs t rcs t rcs t oea t cac t oea t cac t oea t cac valid data-out t clz t off t aa t off t aa t clz t off t oez t rac t aa ? ? t cp t cas t rp t cp
dram module kmm372c80(8)3ck/cs t asc t cah ras v ih - v il - cas v ih - v il - a v ih - v il - w v ih - v il - oe v ih - v il - v ih - v il - dq column address row addr t rhcp t rasp t cas t rad t asr t rah t asc t crp valid don t care fast page write cycle ( early write ) data-in undefined valid data-in t ds note : d out = open column address column address t rsh t cas t rcd t pc ? t csh t cah t asc t cah ? ? ? t wcs t wch t wcs valid data-in ? ? t wp t cwl t wp t wch t wp t wcs t wch t cwl t rwl t cwl t dh t ds t dh t ds t dh ? ? ? t rp t cp t cp t cas t pc
dram module kmm372c80(8)3ck/cs t cac t asc t asc ras v ih - v il - cas v ih - v il - a v ih - v il - w v ih - v il - oe v ih - v il - v i/oh - v i/ol - dq row addr t csh t rasp t asr valid don t care fast page read - modify - write cycle data-out undefined t rcd t cp t rad t cah t wp t dh col. addr col. addr t cas t cas t crp t cah t ral t prwc t rcs t cwl t cwd t awd t rwd t wp t cwd t awd t cwl t aa t rac t oea t clz t cac t oez t cpwd t oed valid data-in valid data-out valid data-in t clz t ds t oea t aa t dh t ds t oez t oed t rwl t rp t rsh t rah
dram module kmm372c80(8)3ck/cs ras v ih - v il - cas v ih - v il - a v ih - v il - row addr t ras t rc t rp t asr t rah t crp don t care ras - only refresh cycle undefined note : w , oe , d in = don t care d out = open t rpc t crp cas - before - ras refresh cycle note : oe , a = don t care ras v ih - v il - cas v ih - v il - t ras t rc t rp t wrp t rpc t rp t cp t chr t csr w v ih - v il - t wrh t off t rpc v oh - v ol - dq open
dram module kmm372c80(8)3ck/cs t wrh t off ras v ih - v il - cas v ih - v il - a v ih - v il - w v ih - v il - oe v ih - v il - v oh - v ol - dq hidden refresh cycle ( read ) column address row address t ras t rc t chr t rcd t rad t asr t rah t asc t cah t crp t rcs t aa t oea t cac t clz t rac open t rrh don t care t rsh t oez t wrp undefined t rc data-out t rp t rp t ras
dram module kmm372c80(8)3ck/cs ras v ih - v il - cas v ih - v il - a v ih - v il - w v ih - v il - oe v ih - v il - v ih - v il - dq hidden refresh cycle ( write ) column address row address t ras t rc t chr t rcd t rad t asr t rah t asc t cah t crp don t care t rsh data-in t wrp t wrh undefined t rc note : d out = open t wch t wp t dh t rp t rp t ras t ds t wcs
dram module kmm372c80(8)3ck/cs cas -before- ras refresh counter test cycle ras v ih - v il - cas v ih - v il - a v ih - v il - column address t ras t rsh t chr t ral t csr t cpt t rp t cas t asc t cah read cycle v oh - v ol - data-out dq t off t clz write cycle v ih - v il - data-in dq t dh t ds w v ih - v il - t wp t cwd t cwl t rwl read-modify-write t awd v ih - v il - oe t oea t aa t cac t ds t dh valid data-out v i/oh - v i/ol - dq don t care undefined v ih - v il - oe t oea t oez oe v ih - v il - t rcs t clz t oez t oed t wrp t wrh t rrh t rch t rcs t cac t aa v ih - v il - w t wrp t wrh t wcs t wch t cwl v ih - v il - w t wp t rwl t wrp t wrh valid data-in note : this timing diagram is applied to all devices besides 16m dram 4th & 64m dram.
dram module kmm372c80(8)3ck/cs don t care undefined cas - before - ras self refresh cycle note : oe , a = don t care ras v ih - v il - cas v ih - v il - t rass t rps t rpc t wrp t chs t rp t cp t csr w v ih - v il - t wrh t off t rpc open v oh - v ol - dq test mode in cycle note : oe , a = don t care ras v ih - v il - cas v ih - v il - t ras t rc t rp t rpc t wts t rpc t rp t cp t chr t csr w v ih - v il - t wth t off open v oh - v ol - dq
dram module kmm372c80(8)3ck/cs tolerances : .005(.13) unless otherwise specified the used device is 8mx8 dram with fast page mode, soj or tsop ii. dram part no. : kmm372c803ck/cs - km48c8100ck, km48c8100cs kmm372c883ck/cs - km48c8000ck, km48c8000cs package dimensions 5.250 5.014 units : inches (millimeters) 0.050 0.039 .002 0.01max (0.25 max) r 0.079 (r 2.000) 0.250 (6.350) 1.450 (36.830) 2.150 (54.61) 0.350 0 . 1 0 0 m i n ( 2 . 5 4 0 m i n ) 0 . 7 0 0 ( 1 7 . 7 8 0 ) (1.000 . 050) (1.270 ) 0 . 1 0 0 m i n ( 2 . 5 4 0 m i n ) detail c .118dia .004 (3.000dia .100) (8.890) a b c 0.250 (6.350) .450 (11.430) 4.550 (115.57) 0.157 0.004 (4.000 0.100 ) 0.054 (1.372) (127.350) (133.350) 1 . 2 5 0 ( 3 1 . 7 5 ) 0.118 (3.000) 0.250 (6.350 ) detail a 0.1230 .0050 (3.125 .125) detail b 0.079 .0040 (2.000 .100) 0 . 1 1 8 ( 3 . 0 0 0 ) 0.250 (6.350 ) 0.1230 .0050 (3.125 .125) 0.079 .0040 (2.000 .100) 0.100max (2.54max ) 0.050 0.0039 (1.270 0.10) tsopii 0.200max (5.08max ) soj 0 . 1 6 5 m i n ( 4 . 1 9 m i n ) ( back view ) ( front view )

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