lsi ls 3101 simple lcd micro-controller features : * 12 input pad, 3 output pad * direct drive buzzer output. * 1024x12 bit rom * 48x4 bit of ram. * 16x3 lcd segment mask option * 32768 crystal/rc oscillator mask option * single 1.5v operation. * low cost and low price. * 1/2 bias, 1/3 duty cycle lcd format general description the lsi3101 is a simple micro-controller for lcd a pplication. it has an internal rom size of 1kx12bit. a 48x4 bit of ram. 16x3 lcd segment.
lsi LS3101 2 functional description 1. rc oscillator /crystal the LS3101 can use either a crystal oscilla tor or rc oscillator to provide the internal timing by mask option. 2. program rom the lsi3101 has internal 1kx12 bit rom providi ng simple operation. it has four internal stack. 3. program ram the system has 48x4bit of program ram (00h to 2fh). 4. buzzer control the system can output 4khz/2khz alarm signal b y mask option at b[0:1]. 5. lcd driver the system has 16 lcd segment pad with 3 commo n pads providing 16x3 lcd segment output. 6. i/o pad the LS3101 has 12 input pad, i[0:11], and 3 output pad r[0:2]. the input pads can be selected (by mask option) with/without internal pull-high resist or.
lsi LS3101 3 pin assignment designation type description b [0:1] output buzzer output f512, vcap output doubler output vee output -1.5v t2, t1 input (pl) test pin cosco output 32khz oscillator output cosci input 32khz oscillator input vdd power +1.5v power supply gnd power ground i[0:11] input(ph) input key/option r[0:2] output trigger output (r[0:2]) c[1:3] output lcd common output s[1:16] output lcd segment output note: (pl) ? pull low (ph) - pull high
lsi LS3101 4 absolute maximum ratings supply voltage vdd - vss..........................0 to 5v input voltage vin.................................v ss to vdd operating temperature top .............-10 c to 60 c storing temperature tst ...................-40 c to 70 c *comments stress above those listed under } bsolute maximum ratings? may cause permanent d amage to the device. these are stress rating only. functional operati on of this device at these or any other conditions above those indicated in the operational sections of this spec ification is not implied and exposure to obsolute maximum rating conditions for extended periods may affect device reliability. d.c. electrical characteristics (gnd = 0v, vdd = 1.5v, ta = 25 c unless otherwise specified) parameter symbol min. typ. max. unit conditions supply voltage vdd 1.2 1.5 1.8 v operating current idd - 2 6 a no load osc. built-in cap cd - 20 - pf osc. trimmer cap ctrim 5 - 35 pf frequency stability ^f/f - - 10 ppm vdd=1.6-1.4 buzzer output current ib 500 - - a vbd-vss=0.5 lcd frequency flcd - 64 - hz segment current is 0.15 - - a vseg=0.2v common current ic 3.0 - - a vcom=0.2v trigger output current ir 100 - - a vr-vss=0.5
lsi LS3101 5 pad location pad x( ? m) y( ? m) pad x( ? m) y( ? m) gnd vcap vee v512 c3 c2 c1 s1 s2 s3 s4 s5 s6 s7 s8 s9 s10 s11 s12 s13 s14 s15 s16 -1500.0 -1500.0 -1295.0 -1295.0 -1295.0 -1295.0 -1295.0 -1295.0 -1295.0 -1295.0 -1295.0 -1295.0 -1295.0 -1295.0 -1295.0 -1295.0 -1295.0 -1295.0 -1295.0 -1303.0 -1163.0 -1023.0 -883.0 -1500.0 -1366.0 -1110.0 -965.0 -825.0 -685.0 -545.0 -400.0 -260.0 -120.0 +20.0 +160.0 +300.0 +440.0 +580.0 +720.0 +860.0 +1000.0 +1140.0 +1350.0 +1350.0 +1350.0 +1350.0 pb r2 r1 r0 osco osci t1 gnd b1 b0 vdd t2 i7 i6 i5 i4 i3 i2 i1 i0 i8 i9 i10 i11 -743.0 -593.0 -449.0 -225.0 -75.0 +1105.0 +1246.0 +1246.0 +1246.0 +1246.0 +1246.0 +1246.0 +1246.0 +1246.0 +1246.0 +1246.0 +1246.0 +1246.0 +1246.0 +1246.0 +1246.0 +1246.0 +1246.0 +1246.0 +1350.0 +1350.0 +1350.0 +1350.0 +1350.0 +1340.0 +1340.0 +1140.0 +988.0 +678.0 +543.0 +395.0 +226.0 +78.0 -70.0 -216.0 -365.0 -513.0 -661.0 -809.0 -957.0 -1105.0 -1253.0 -1400.0
lsi LS3101 6 pad location
lsi LS3101 7 application circuit
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