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 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. 2 LSI LS5015 Pin Assignment DESIGNATION B [0:1] V1, V2 VEE T2, T1 OO OI VDD GND I[0:5] O[0:3] C[1:3] S[1:10] TYPE DESCRIPTION OUTPUT OUTPUT OUTPUT INPUT (PL) OUTPUT INPUT POWER POWER INPUT(PL) OUTPUT OUTPUT OUTPUT Buzzer output Doubler output -1.5V TEST pin 32KHz oscillator output 32KHz oscillator input +1.5V power supply Ground Input key/option Trigger output (O[0:2]) LCD Common output LCD Segment output Note: (PL) – pull low (PH) - pull high 3 LSI LS5015 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 Supply Voltage Operating current OSC. built-in cap OSC. trimmer cap Frequency stability Buzzer output current LCD frequency Segment current Common current Trigger output current Symbol Vdd Idd Cd Ctrim ^f/f Ib Flcd Is Ic Ir Min. 1.24 5 500 0.15 3.0 100 4 Typ. 1.5 2 20 64 - Max. 1.75 5 35 10 - Unit V µA pF pF ppM µA Hz µA µA µA Conditions No load Vdd=1.6-1.4 Vbd-Vss=0.5 Vseg=0.2V Vcom=0.2V Vr-Vss=0.5 LSI LS5015 Pad location 5 LSI LS5015 Pad Coordinate PAD X(µ 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 Y(µ m) PAD -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] 6 X(µ m) -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 Y(µ m) 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 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 |S4 | 2A | 2G | 2E 8 |S5 | 2B | 2C | 2D 9 |S6 | 3F | BB | 3E 10 |S7 | 3A | 3G | 3D 11 |S8 | 3B | 3C | 4E 12 |S9 | 4F | 4G | 4D 13 |S10| 4A | 4B | 4C 7