fujitsu semiconductor fact sheet november 2013 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?1/2 copyright?2013 fujitsu semiconduc tor limited all rights reserved np501-00026-0v01-e fram MB85R4M2T ? the MB85R4M2T is an fram chip consisting of 262,144 words16 bits of nonvolatile memory cells fabricated using ferroelectric process and cm os process technologies. the MB85R4M2T uses a pseudo-sram in terface that is compatible with conventional asynchronous sram. ? ? features ? ? bit configuration : 262,144 words16 bits ? lb and ub data byte control : available configuration of 524,288 words 8 bits ? read/write endurance : 10 13 times / 16 bits ? data retention : 10 years (+85 c) ? operating power supply voltage : 1.8v to 3.6v ? low power operation : operating power supply current 20 ma (max) standby current 150 a (max) sleep current 20 a (max) ? operation ambient temperature range : -40 c to +85 c ? package : 44-pin plastic tsop (fpt-44p-m34) rohs compliant ? ? ordering information ? ? ? ? ? ? ? ? outline of package ? ? ? product name package shipping form MB85R4M2Tfn-g-ase1 44-pin plastic tsop (fpt-44p-m34) tray ? plastic tsop, 44-pin (fpt-44p-m34)
MB85R4M2T preliminary np501-00026-0v01-e november 2013 2/2 copyright?2013 fujitsu semiconduc tor limited all rights reserved pin assignment ? ? block diagram ? ? ? ? ? ? ? ? ? pin name description a0 to a17 address input pins i/o0 to i/o15 data input / output pins /ce chip enable input pin /we write enable input pin /oe output enable input pin /zz sleep mode input pin /lb, /ub lower/upper byte control input pins vdd supply voltage pin vss ground pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 a5 a6 a7 /oe /ub /lb i/o15 i/o14 i/o13 i/o12 vss vdd i/o11 i/o10 i/o9 i/o8 /zz a8 a9 a10 a11 a12 fpt-44p-m34 (top view) a4 a3 a2 a1 a0 /ce i/o0 i/o1 i/o2 i/o3 vdd vss i/o4 i/o5 i/o6 i/o7 /we a17 a16 a15 a14 a13 fram array 262,14416 column decoder / sense amp. /writeamp. a0 to a17 /ce /we /oe /lb /ub /zz address control circuits row decoder i/o0 to i/o15
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