lsi LS5015 simple lcd micro-controller features : * 6 input pad, 4 output pad * direct drive buzzer output. * 512x11 bit rom * 20x4 bit of ram. * 4 digit plus 2 dot lcd * 10x3 lcd segment * 32768 crystal/rc oscillator mask option * single 1.5v operation. * low cost and low price. general description the LS5015 is a simple micro-controller for lcd application. it has an internal rom size of 512x11bit. a 20x4 bit of ram. 4 digit plus 2 dot lcd format on 10x3 lcd segment.
lsi LS5015 2 functional description 1. rc oscillator /crystal the LS5015 can use either a crystal oscillator or rc oscillator to provide the internal timing by mask option. 2. program rom the LS5015 has internal 512x12 bit rom providing simple operation. it has four internal stack. 3. program ram the system has 20x4bit of program ram (00h to 13h). 4. buzzer control the system can output 2khz alarm signal. buzzer control address at 4h. 5. lcd driver the system has 10 lcd segment pad with 3 common pads providing 10x3 lcd segment output. it can only support 4 digit plus 2 dot lcd format. the lcd decode the data at ram 0,1,2,3 for the 4 digit lcd display. the 2 dot (named: aa, bb) is controlled by ram 12h:d2 as aa and 12h:d3 as bb. 6. i/o pad the LS5015 has 6 input pad, i[0:5], and 4 output pad o[0:3]. the input pads can be selected (by mask option) with/without internal pull-low resistor. the output pads can be selected by mask option to be cmos or open drain output.
lsi LS5015 3 pin assignment designation type description b [0:1] output buzzer output v1, v2 output doubler output vee output -1.5v t2, t1 input (pl) test pin oo output 32khz oscillator output oi input 32khz oscillator input vdd power +1.5v power supply gnd power ground i[0:5] input(pl) input key/option o[0:3] output trigger output (o[0:2]) c[1:3] output lcd common output s[1:10] output lcd segment output note: (pl) ? pull low ( ph) - pull high
lsi LS5015 4 absolute maximum ratings supply voltage vdd - vss. .........................0 to 5v input voltage vin ................................. vss to vdd operating temperature top .............-10 c to 60 c storing temperature tst ...................-40 c to 70 c comments stress above those listed under absolute maximum ratings may cause permanent damage to the device. these are stress rating only. functional operation of this device at these or any other conditions above those indicated in the operational sections of this specification is not implied and exposure to absolute 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 1.24 1.5 1.75 v operating current idd - 2 5 m 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 - - m a vbd-vss=0.5 lcd frequency flcd - 64 - hz segment current is 0.15 - - m a vseg=0.2v common current ic 3.0 - - m a vcom=0.2v trigger output current ir 100 - - m a vr-vss=0.5
lsi LS5015 5 pad location
lsi LS5015 6 pad coordinate pad x( m m) y( m m) pad x( m m) y( m m) so[2] so[1] so[0] so[3] s1 s2 s3 s4 s5 s6 s7 s8 s9 s10 c1 c2 c3 v2 v1 -1063.00 -922.75 -731.25 -1063.00 -1063.00 -1063.00 -1063.00 -1063.00 -1063.00 -1063.00 -1063.00 -1063.00 -1063.00 -1063.00 -1033.00 -898.00 -763.00 -628.00 -493.00 -909.50 -909.50 -909.50 -703.50 -568.50 -433.50 -298.50 -163.50 -28.50 163.00 298.00 433.00 568.00 703.00 909.50 909.50 909.50 909.50 909.50 vee kout pb oo oi gnd bd[0] t1 t2 b[1] vdd si[5] si[4] si[3] si[2] si[1] si[0] -358.00 -123.50 20.25 321.75 874.75 1062.75 945.25 945.25 945.25 945.25 1062.75 1062.75 1062.75 1062.75 1062.75 1062.75 1062.75 909.50 909.50 909.50 909.50 909.50 717.00 547.50 412.50 277.50 142.50 -27.00 -162.00 -300.50 -444.50 -583.00 -727.00 -865.00
lsi LS5015 7 lcd drawing pin | sig | c1 | c2 | c3 ===================== ======== = 1 | c3 | | | com3 2 | c2 | | com2| 3 | c1 | com1 | | 4 | s1 | 1f | 1e | aa 5 | s2 | 1a | 1g | 1d 6 | s3 | 2f | 1b | 1c 7 | s 4 | 2a | 2g | 2e 8 | s5 | 2b | 2c | 2d 9 | s 6 | 3f | bb | 3e 10 | s 7 | 3a | 3g | 3d 11 | s8 | 3b | 3c | 4e 12 | s 9 | 4f | 4g | 4d 13 | s10| 4a | 4b | 4c
|
