LSI LS3103 Simple LCD micro-controller Features : * * * * * * 6 Input pad EL driver output. Direct drive buzzer output. 1024x12 bit ROM 73x4 bit of RAM. 28x2, x3, or x4 LCD segment mask option * LCD ROM * 12 (of 28 segment) output mask option * 32768 Crystal/RC oscillator mask option * Single 3.0V operation. General Description The LS3103 is a simple micro-controller for LCD application. It has an internal ROM size of 1Kx12bit. A total of 73x4 bit RAM. LCD can be configured to be 1/2, 1/3, 1/4 duty mask option. A total of 28 segment PAD can be configured to be 28x2, 28x3 or 16x4 + 12x3 LCD segment. LCD bias is 1/2. Segment pad S17-S28 can be configured as output pad by mask option. The LS3103 also include a 16x12x3x4bit of data ROM. It has a total of 6 input pad, 2 EL/output pad (mask option) and 2 buzzer output pad. It has low power consumption. LSI LS3103 Functional Description 1. RC Oscillator /Crystal The LS3103 can use either a crystal oscillator or RC oscillator to provide the internal timing by mask option. 2. Program ROM The LSI3103 has internal 1Kx12 bit ROM providing simple operation. It has four internal stack. 3. Interrupt Control The LSI3103 has 5 different sources of interrupt, namely, POWERUP, F4HZ, F16HZA, F16HZS and F1HZ. The starting address of the interrupt are as follow : Interrupt POWERUP F1HZ F4HZ F16HZA F16HZS Address 0x3ff 0x3fe 0x3fc 0x3f8 0x3f1 The system generates 16 interrupts for F16HZS in one second but only 11 interrupts for F16HZA. The other 5 interrupts goes to F4HZ (4) and F1HZ (1) interrupts. 3. RAM The system has 73x4bit of program RAM with IO address as follows. Address 0-0fH 10H-1fH 20-2fH 30H 31H 32H 33H 34H-3fH 54H-56H 58H-5AH 5CH-5EH 73H Description RAM Display RAM RAM rptrl rptrh rptr1 Beep Control RAM Display RAM Display RAM Display RAM IOX Register Initialize undefined undefined undefined undefined undefined undefined 0 Undefined Undefined Undefined Undefined 0 Address 31H:30H forms a 8 bit address for indirect read/write operation. Address 32H:30H forms a 8 bit address for indirect read/write operation. 2 LSI LS3103 4. Buzzer Control/Tone Generator Control The system can output 4khz/2khz alarm signal by mask option. The alarm signal is enabled to the output B0, B1 when the Beep Control Register: Bit[0] is high. 5. LCD driver The system has 16 LCD segment pad with 2/3/4 common pads (mask option) providing 28x2, 28x3 or 16x4 + 12 x3 LCD segment output. The LCD segment table is shown below : SEG[1:4] SEG[5:8] SEG[9:12] SEG[13:16] SEG[17:20] SEG[21:24] SEG[25:28] COM 1 1CH:D[0:3] 1DH:D[0:3] 1EH:D[0:3] 1FH:D[0:3] 5CH:D[0:3] 5DH:D[0:3] 5EH:D[0:3] COM2 18H:D[0:3] 19H:D[0:3] 1AH:D[0:3] 1BH:D[0:3] 58H:D[0:3] 59H:D[0:3] 5AH:D[0:3] COM3 14H:D[0:3] 15H:D[0:3] 16H:D[0:3] 17H:D[0:3] 54H:D[0:3] 55H:D[0:3] 56H:D[0:3] 6. EL Driver R0, R1 can be configured as general output or E.L. output. 7. Mask option Name BZ2K/4K BZ[0], BZ[1] FSYSPRB description buzzer frequency buzzer control Power Up Control 3 COM4 10H:D[0:3] 11H:D[0:3] 12H:D[0:3] 13H:D[0:3] Not implemented Not implemented Not implemented LSI LS3103 Pin Assignment DESIGNATION B [0:1] VC1, VC2 VEE T2, T1 OO OI VDD GND I[0:5] R[0:1] C[1:3] S[1:28] TYPE DESCRIPTION OUTPUT OUTPUT OUTPUT INPUT (PL) OUTPUT INPUT POWER POWER INPUT(PL) Buzzer output Halfer output Halfer voltage TEST pin oscillator output oscillator input +3.0V power supply Ground Input key/option OUTPUT OUTPUT OUTPUT Output /EL output LCD Common output LCD Segment output Note: (PL) – pull low (PH) - pull high 4 LSI LS3103 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 = 3.0V, Ta = 25°C unless otherwise specified) Parameter Supply Voltage Operating current OSC. built-in cap OSC. trimmer cap Buzzer output current LCD frequency Segment current Common current Trigger output current Symbol Vdd Idd Cd Ctrim Ib Flcd Is Ic Ir Min. 2.5 5 500 0.15 3.0 100 5 Typ. 3.0 3 20 64 - Max. 3.6 6 35 - Unit V µA pF pF µA Hz µA µA µA Conditions No load Vbd-Vss=0.5 Vseg=0.2V Vcom=0.2V Vr-Vss=0.5 LSI LS3103 Pad Coordinate PAD C1 S16 S15 S14 S13 S12 S11 S10 S9 S8 S7 S6 S5 S4 S3 S2 S1 S17 S18 S19 S20 S21 S22 S23 S24 S25 X(µ µm) -1408.20 -1408.20 -1408.20 -1408.20 -1408.20 -1408.20 -1408.20 -1408.20 -1408.20 -1408.20 -1408.20 -1408.20 -1408.20 -1408.20 -1408.20 -1408.20 -570.50 -436.50 -238.70 -104.70 93.10 227.10 406.20 540.20 674.20 808.20 PAD S26 S27 S28 C3 C2 I4 I5 I0 I1 I2 I3 VDD B0 T2 T1 B1 GND OI OI 15pF OO R0 R1 PB VC1 VC2 VEE Y(µ µm) 506.10 372.10 238.10 104.10 -29.90 -163.90 -297.90 -431.90 -565.90 -699.90 -833.90 -967.90 -1101.90 -1235.90 -1369.90 -1503.90 -1513.90 -1513.90 -1513.90 -1513.90 -1513.90 -1513.90 -1513.90 -1513.90 -1513.90 -1513.90 6 X(µ µm) 942.20 1076.20 1210.20 1344.20 1408.00 1408.00 1408.00 1408.00 1408.00 1408.00 1408.00 1408.00 1408.00 1408.00 1408.00 1408.00 1408.00 1400.30 1400.30 184.00 -56.30 -425.20 -561.20 -1045.70 -1179.70 -1313.70 Y(µ µm) -1513.90 -1513.90 -1513.90 -1513.90 -1287.00 -1151.00 -741.60 -597.60 -188.20 -44.20 365.20 509.20 653.20 797.20 941.20 1085.20 1229.20 1423.00 1513.00 1499.30 1499.30 1499.30 1499.30 1499.30 1499.30 1499.30 LSI LS3103 Pad Location 7 LSI LS3103 Application Circuit (for watch) 8