b27w102/804 1/3 complete data available on data-on-disc cd-rom or at www.st.com M27W102 1 mbit (64kb x 16) low voltage uv eprom and otp eprom data briefing ai01922 16 a0-a15 p q0-q15 v pp v cc M27W102 g e v ss 16 logic diagram low voltage read operation: 2.7v to 3.6v fast access time: 70ns at v cc = 3.0v to 3.6v 80ns at v cc = 2.7v to 3.6v low power consumption: active current 15ma standby current 20 m a programming voltage: 12.75v 0.25v programming time of around 6 sec. (presto ii algorithm) electronic signature manufacturer code: 0020h device code: 008ch description the M27W102 is a low voltage 1 mbit eprom offeredin the two ranges uv (ultra violet erase) and otp (one time programmable). it is ideally suited for microprocessor systems requiring large data or program storage and is organized as 65,536 words by 16 bits. the M27W102 operates in the read mode with a supply voltage as low as 2.7v at 40 to 85 c temperature range. the decrease in operating power allows either a reduction of the size of the battery or an increase in the time between battery recharges. the fdip40w (window ceramic frit-seal package) has a transparent lid which allows the user to expose the chip to ultraviolet light to erase the bit pattern. a new pattern can then be written to the device by following the programming procedure. for application where the content is programmed only one time and erasure is not required, the M27W102 is offered in plcc44 and tsop40 (10 x 14mm) packages. 1 40 fdip40w (f) plcc44 (k) tsop40 (n) 10 x 14mm
2/3 M27W102 q6 q5 q4 q11 q8 v ss q7 q10 q9 a12 a8 a11 a10 a6 a13 a9 v ss a7 a2 q1 q0 a0 g a1 a5 nc p e q12 v pp v cc q15 ai01923 M27W102 8 1 2 3 4 5 6 7 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 q3 q2 q14 q13 a4 a3 40 39 38 37 36 35 34 33 a14 a15 dip pin connections dq6 dq3 dq2 dq13 dq8 dq7 dq10 dq9 a14 a8 a11 a10 a4 a15 a9 g a7 a2 dq1 dq0 a0 a1 a3 nc p e dq14 v pp v cc dq15 ai01925 M27W102 (normal) 10 1 11 20 21 30 31 40 v ss a12 a6 a13 a5 dq12 dq4 dq11 dq5 v ss tsop pin connections warning: nc = not connected. warning: nc = not connected. ai01924 a14 a11 a7 a3 23 q6 q5 q4 q3 q2 nc a2 q12 q8 v ss nc q11 q10 12 a15 a9 1 q15 v ss a12 q13 a5 44 nc nc M27W102 q14 a13 a4 nc a6 34 q1 q9 a10 a8 q7 q0 g a0 a1 v pp e p v cc lcc pin connections warning: nc = not connected. a0-a15 address inputs q0-q15 data outputs e chip enable g output enable p program v pp program supply v cc supply voltage v ss ground signal names
3/3 M27W102 ordering information scheme notes: 1. high speed, see ac characteristics section for further information. 2. this speed also guarantees 70ns access time at v cc = 3.0v to 3.6v (m27v102) 3. these speeds are replaced by the 100ns. for a list of available options (speed, package, etc...) or for further informationon any aspect of this device, please contact the sgs-thomson sales office nearest to you. speed -80 (1,2) 80 ns -100 100 ns not for new design (3) -120 120 ns -150 150 ns -200 200 ns package f fdip40w k plcc44 n tsop40 10 x 14mm temperature range 6 40 to 85 c option tr tape & reel packing example: M27W102 -80 k 6 tr
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