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  general description 2m bytes (256k x 64) UG4256G6412FQG0 support@unigen.com 45388 warm springs blvd. fremont, ca. 94539 tel: (510) 668-2088 fax: (510) 661-2788 1 of 3 re-tek- 436 the UG4256G6412FQG0 is a 256k byte by 64 bits 2m sgram sodimm module .the UG4256G6412FQG0 is assembled using 2 pcs of 256k x 32 sgrams mounted on 144 pin unbuffered printed circuit board. pin names pin assignment features single 3.3 +/- 0.3v power supply burst mode operation block write and write-bit modes internal pipelined operation; column address can be changed every clock cycle all inputs are sampled at the positive going edge of the system clock programmable burst lengths : 1,2,4,8 or full page auto & self refresh capability (1024 cycles/16ms) lvttl compatible inputs and output serial pd with eeprom jedec standard pcb:height (1100mil),single sided component ? ? ? ? ? ? ? ? ? ? ? sgram 144pin sodimm based on 256k x 32 absolute maximum ratings voltage relative to gnd -1.0 to +4.6 v operating temperature 0 to +70 c storage temperature -55 to +150 c short-circuit output current 50ma power dissipation 2.0 w ? ? ? ? ? pin # signal 1 vss 3 dq63 5 dq61 7 dq59 9 dq57 11 vcc 13 dq55 15 dq53 17 dq51 19 dq49 21 vss 23 dqm7 25 dqm5 27 vcc 29 dq47 31 dq45 33 dq43 35 dq41 37 vss 39 dq39 41 dq37 43 dq35 45 dq33 47 vcc 49 rsvd 51 rsvd 53 rsvd 55 vss 57 dsf 59 rfu 61 rfu 63 vcc 65 nc 67 ras 69 we 71 vss pin # signal 2 vss 4 dq62 6 dq60 8 dq58 10 dq56 12 vcc 14 dq54 16 dq52 18 dq50 20 dq48 22 vss 24 dqm6 26 dqm4 28 vcc 30 dq46 32 dq44 34 dq42 36 dq40 38 vss 40 dq38 42 dq36 44 dq34 46 dq32 48 vcc 50 rsvd 52 rsvd 54 rsvd 56 vss 58 rfu 60 rfu 62 sba 64 vcc 66 cs0 68 cas 70 cke 72 vss pin # signal 73 nc 75 vcc 77 rsvd 79 nc 81 ba(a9) 83 a7 85 vss 87 a5 89 a3 91 a1 93 vcc 95 dq31 97 dq29 99 dq27 101 dq25 103 vss 105 dq23 107 dq21 109 dq19 111 dq17 113 vcc 115 dqm3 117 dqm1 119 vss 121 dq15 123 dq13 125 dq11 127 dq9 129 vcc 131 dq7 133 dq5 135 dq3 137 dq1 139 vss 141 sda 143 vcc pin # signal 74 clk0 76 vcc 78 rsvd 80 nc 82 a8 84 a6 86 vss 88 a4 90 a2 92 a0 94 vcc 96 dq30 98 dq28 100 dq26 102 dq24 104 vss 106 dq22 108 dq20 110 dq18 112 dq16 114 vcc 116 dqm2 118 dqm0 120 vss 122 dq14 124 dq12 126 dq10 128 dq8 130 vcc 132 dq6 134 dq4 136 dq2 138 dq0 140 vss 142 scl 144 vcc pin name function a0 ~ a8 address input (multiplexed) ba(a9) select bank dq0 ~ dq63 data input/output clk0 clock input cke clock enable input cs0 chip select input ras row address storbe cas colume address strobe we write enable dqm0 ~ 7 dqm v cc power supply (3.3v) v ss sda serial data i/o scl serial clock nc no connection ground dsf define special function sba eeprom device address rfu reserved for future use rsvd reserved
UG4256G6412FQG0 45388 warm springs blvd. fremont, ca. 94539 tel: (510) 668-2088 fax: (510) 661-2788 support@unigen.com 2 of 3 re-tek- 436 functional block diagram dq0 dq7 v dd vss five 0.1uf capacitors per sgram device to all sgrams serial pd sda scl a1 a2 a0 cke dsf ras cas we u0 to u1 u0 to u1 u0 to u1 u0 to u1 u0 to u1 clk0 0 cs0 dq0 dq7 u0 dqm0 dqm0 dq8 dq15 dq8 dq15 dqm1 dqm1 dq16 dq23 dq16 dq23 dqm2 dqm2 dq24 dq31 dq24 dq31 dqm3 dqm3 dq32 dq39 dq0 dq7 u1 dqm0 dqm4 dq40 dq47 dq8 dq15 dqm1 dqm5 dq48 dq55 dq16 dq23 dqm2 dqm6 dq56 dq63 dq24 dq31 dqm3 dqm7 ba(a9) a(8:0) u0 to u1 u0 to u1 . . . u0, u1 sba v ss w ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
support@unigen.com 45388 warm springs blvd. fremont, ca. 94539 tel: (510) 668-2088 fax: (510) 661-2788 3 of 3 UG4256G6412FQG0 re-tek- 436 physical dimension 144 pin sgram sodimm module units : inches (millimeters) tolerances : 0 .005(.13) unless otherwise specified 2.66 2.50 units : inches (millimeters) 0.03 typ 0.024 0.001 0.01 max (0.25 max) 0.177 max 0.04 0.0039 (1.00 0.10) 2-r 0.078 min (2.00 min) 0.18 (4.60) 0.75 (19.20) 1.44 (36.80) 0 . 2 4 ( 6 . 0 ) 0.13 0 . 7 9 ( 2 0 . 0 0 ) (0.60 0.05 ) (0.80 typ ) 0 . 1 0 m i n ( 2 . 5 5 m i n ) detail y (3.30) (63.60) (67.60) detail z 0.16 0.0039 (4.00 0.10) 0.06 0.0039 (1.50 0.1) 0 . 1 2 5 m i n ( 3 . 2 0 m i n ) (4.5 max) 2- 0.07 (1.80) 1 . 1 0 0 ( 2 7 . 9 4 ) 0.16 0.039 (4.00 0.10) 0.083 (2.10) 0.10 (2.50) z y 1.15 (3.70) * note 1 + + _ _ + _ _ + + _ _ + + + _ _ _ _ + + ?


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