M27W801 8 mbit (1mb x 8) low voltage otp eprom data briefing b27w801/804 1/2 complete data available on data-on-disc cd-rom or at www.st.com ai02363 20 a0-a19 q0-q7 v cc M27W801 v ss 8 gv pp e logic diagram low voltage read operation: 2.7v to 3.6v fast access time: C 70ns at v cc = 3.0v to 3.6v C 80ns at v cc = 2.7v to 3.6v low power consumption: C active current 15ma C standby current 20 m a programming voltage: 12.75v 0.25v programming times of around 52sec. (presto iib algorithm) electronic signature C manufacturer code: 20h C device code: 42h description the M27W801 is a low voltage 8 mbit eprom offered in the otp ranges (one time programma- ble). it is ideally suited for microprocessor systems requiring large data or program storage and is organized as 1,048,576 by 8 bits. the M27W801 operates in the read mode with a supply voltage as low as 2.7v at C40 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 M27W801 is offered in plcc32 and tsop32 (8 x 20 mm) packages. plcc32 (k) tsop32 (n) 8 x 20mm a0-a19 address inputs q0-q7 data outputs e chip enable gv pp output enable / program supply v cc supply voltage v ss ground signal names
2/2 ai02365 a17 a8 a10 q5 17 a1 a0 q0 q1 q2 q3 q4 a7 a4 a3 a2 a6 a5 9 a18 a9 1 a16 a11 a13 a12 q7 32 a19 v cc M27W801 a15 a14 q6 gv pp e 25 v ss plcc pin connections a1 a0 q0 a7 a4 a3 a2 a6 a5 a13 a10 a8 a9 q7 a14 a11 gv pp e q5 q1 q2 q3 q4 q6 a17 a18 a16 a12 a19 v cc a15 ai02366 M27W801 (normal) 8 1 9 16 17 24 25 32 v ss tsop pin connections M27W801 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 (m27v801). 3. these speeds are replaced by the 100ns. for a list of available options (speed, package, etc...) or for further information on 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 k plcc32 n tsop32 8 x 20mm temperature range 6 C40 to 85 c option tr tape & reel packing example: M27W801 -80 k 6 tr
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