HL14104

HL15604 HL14104 LCD Driver Hyundai Electronics Industries System IC Division 1 HL15604 Contents 1. General Description 2. Features 3. Block Diagram 4. Pin Diagram 5. Pin Description 6. Serial I/O Data Format 7. Registers 8. Key Scan Function 9. LCD Function 10. Power On Reset 11. Power Down Mode 12. Oscillator Port 13. Electrical Characteristics 14. Application 2 HL15604 1. General Description The HL14104 is 1/4 duty LCD display driver. It can drive directly maximum 164 segments. Also it has four general purpose output ports and a key scan function that accepts input from up to 30 keys. 2. Features • LCD display ..................................... 41 segments x 4 commons 1/4 duty - 1/2 bias 1/4 duty - 1/3 bias Key scan ............................................ Maximum 30 keys Input 5 pins, Output 6 pins Power down mode ............................. Sleep mode and all segments off mode Port Output .................................................. 4 pins ( Including the LCD segment port ) Serial I/O .............................................. Data transfer and receive Power on reset ..................................... Supply voltage detection ( SVD ) RC oscillator Package ............................................... 64QFP Package Dimensions 64QFP (14×14) 17.2 • • • • • • • 64QFP (10×10) 12.0 0.15 48 49 10.0 32 33 (1.6) 14.0 1.0 48 49 1.0 0.8 33 32 (1.6) 1.0 0.15 17.2 14.0 0.8 12.0 10.0 64 1 1.0 0.35 17 16 2.7 0.1 64 1 0.18 17 16 0.1 1.7max 0.5 1.25 Unit : mm Unit : mm 3 1.25 0.5 0.5 HL15604 3. Block Diagram KS2 / SEG41 KS1 / SEG40 SEG39 SEG5 SEG4 / P4 COMMOM DRIVER COM4 COM3 COM2 COM1 SEGMENT DRIVER LCD DISPLAY & CONTROL REGISTER RESET VCL1 VCL2 VDD VSS LCD BIAS SVD SEG1 / P1 OSC CLOCK GENERATOR TEST CONTROL SERIAL I/O CLOCK KEY SCAN SI SO SCK CE TEST KS6 KS5 KS4 KS3 KS2 KS1 4 KIN5 KIN4 KIN3 KIN2 KIN1 4. Pin Diagram KS6 KIN1 KIN2 KIN3 KIN4 KIN5 TEST VDD VCL1 VCL2 VSS OSC SO CE SCK SI 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 HL14104 5 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 SEG32 SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 SEG25 SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG1 / P1 SEG2 / P2 SEG3 / P3 SEG4 / P4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 KS5 KS4 KS3 KS2 / SEG41 KS1 / SEG40 COM4 COM3 COM2 COM1 SEG39 SEG38 SEG37 SEG36 SEG35 SEG34 SEG33 HL15604 HL15604 5. Pin Description PIN Name SEG[41:1] COM [4:1] VCL[2:1] OSC KS[6:1] KIN[5:1] CE SCK SO SI TEST P[4:1] VDD VSS I/O O O I I/O O I I I O I I O I I Pin Number 41 4 2 1 6 5 1 1 1 1 1 4 1 1 Contents LCD SEG Pins share P1,P2,P3 and P4 LCD Common Pins LCD Bias Pins Oscillator Input Pin Key Scan Output Pins Key Scan Input Pins Serial I/O Control Pin Serial I/O Clock Pin Serial I/O Data Output Pin Serial I/O Data Input Pin Test Pin. “1” Test mode , “0” Normal Mode Output Port share SEG[4:1] Power Supply Pin Ground Pin 6 HL15604 6. Serial I/O Data Format 1) Writing Mode i )SCK is stopped at the low level CE SCK SI SO CE SCK SI SO CE SCK SI SO XX 0 A0 1 A1 0 A2 0 A3 0 A4 0 A5 1 A6 0 A7 D85 D86 Display data D123 D124 XX 0 A0 1 A1 0 A2 0 A3 0 A4 0 A5 1 A6 0 A7 D1 D2 D3 Display data D41 D42 D43 D44 0 0 S0 S1 K0 K1 P0 P1 SC DR 0 DD 0 Control data XX 0 A0 1 A1 0 A2 0 A3 0 A4 0 A5 1 A6 0 A7 D45 D46 Display data D83 D84 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 DD 1 Fixed data 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 DD 0 Fixed data CE SCK SI SO XX 0 A0 1 A1 0 A2 0 A3 0 A4 0 A5 1 A6 0 A7 D125 D126 Display data D163 D164 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 DD 1 Fixed data 7 HL15604 ii )SCK is stopped at the high level CE SCK SI SO CE SCK SI SO CE SCK SI SO CE SCK SI SO A7~A0 : 42H address D164~D1 : Data of LCD display registers S0, S1 : Sleep control data K0, K1 : Key scan output / Segment output selection data P0, P1 : Segment output / general-purpose output port selection data SC : Segment on / off control data DR : 1/2 bias or 1/3 bias drive selection data XX 0 A0 1 A1 0 A2 0 A3 0 A4 0 A5 1 A6 0 A7 D125 D126 D163 D164 XX 0 A0 1 A1 0 A2 0 A3 0 A4 0 A5 1 A6 0 A7 D1 D2 D3 D41 D42 D43 D44 Display data 0 0 S0 S1 K0 K1 P0 P1 SC DR 0 DD 0 Control data XX 0 A0 1 A1 0 A2 0 A3 0 A4 0 A5 1 A6 0 A7 D45 D46 D83 D84 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 DD 1 Display data Fixed data XX 0 A0 1 A1 0 A2 0 A3 0 A4 0 A5 1 A6 0 A7 D85 D86 D123 D124 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 DD 0 Display data Fixed data 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 DD 1 Display data Fixed data 8 HL15604 2) Reading Mode i ) SCK is stopped at the low level CE SCK SI SO XX 1 1 0 0 0 0 1 0 XX A0 A1 A2 A3 A4 A5 A6 A7 XX K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 K12 Output data X : don’t care K29 K30 SA XX ii ) SCK is stopped at the high level CE SCK SI SO XX 1 1 0 0 0 0 1 0 XX A0 A1 A2 A3 A4 A5 A6 A7 XX K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 K12 Output data K29 K30 SA XX X : don’t care A7 ~ A0 : 43H address K30 ~ K1 : Key data SA : Sleep acknowledge 9 HL15604 7. Registers 1) Display Registers Output Pin SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 SEG39 SEG40 SEG41 COM1 D1 D5 D9 D13 D17 D21 D25 D29 D33 D37 D41 D45 D49 D53 D57 D61 D65 D69 D73 D77 D81 D85 D89 D93 D97 D101 D105 D109 D113 D117 D121 D125 D129 D133 D137 D141 D145 D149 D153 D157 D161 COM2 D2 D6 D10 D14 D18 D22 D26 D30 D34 D38 D42 D46 D50 D54 D58 D62 D66 D70 D74 D78 D82 D86 D90 D94 D98 D102 D106 D110 D114 D118 D122 D126 D130 D134 D138 D142 D146 D150 D154 D158 D162 COM3 D3 D7 D11 D15 D19 D23 D27 D31 D35 D39 D43 D47 D51 D55 D59 D63 D67 D71 D75 D79 D83 D87 D91 D95 D99 D103 D107 D111 D115 D119 D123 D127 D131 D135 D139 D143 D147 D151 D155 D159 D163 COM4 D4 D8 D12 D16 D20 D24 D28 D32 D36 D40 D44 D48 D52 D56 D60 D64 D68 D72 D76 D80 D84 D88 D92 D96 D100 D104 D108 D112 D116 D120 D124 D128 D132 D136 D140 D144 D148 D152 D156 D160 D164 10 HL15604 2) Control Registers Bias Selection Register DR 0 1 Bias Selection 1/3 Bias 1/2 Bias Key Scan / Segment output Selection Register Control Data K0 K1 0 0 0 1 1 X Output Pin Status Maximum number of Input Pins KS1/SEG40 KS2/SEG41 KS1 KS2 30 SEG40 KS2 25 SEG40 SEG41 20 Port Mode Register Control Data P0 P1 0 0 0 1 1 0 1 1 SEG1/ P1 SEG1 P1 P1 P1 Output Pin Status SEG2/ P2 SEG3/ P3 SEG2 SEG3 P2 SEG3 P2 P3 P2 P3 SEG4/ P4 SEG4 SEG4 SEG4 P4 Port Data Register Output Pin SEG1 / P1 SEG2 / P2 SEG3 / P3 SEG4 / P4 Port Data Register D1 D5 D9 D13 Sleep Mode Control Register Control Data Output Pin Status OSC SEG / COMMON Mode Output Oscillator S0 S1 KS1 KS2 KS3 KS4 KS5 0 0 Normal Operating Operating H H H H H 0 1 Sleep Stopped L L L L L L 1 0 Sleep Stopped L L L L L H 1 1 Sleep Stopped L H H H H H KS6 H H H H 11 HL15604 Display On/Off Control Register Control Data SC 0 1 Display Status SEG1 ~ SEG41 On Off Key Scan Data & Sleep Acknowledge Read ADDRESS 43H KIN1 K1 K6 K11 K16 K21 K26 Read Data K1 ~ K30, SA KIN2 K2 K7 K12 K17 K22 K27 KIN3 K3 K8 K13 K18 K23 K28 KIN4 K4 K9 K14 K19 K24 K29 KIN5 K5 K10 K15 K20 K25 K30 KS1 / SEG40 KS2 / SEG41 KS3 KS4 KS5 KS6 12 HL15604 8. Key Scan Function 1) Key Scan Timing The key scan period is 384T. The HL14104 scans the key twice and determines that a key has been pressed when the key data agrees. It outputs a key data read request 800T after starting a key scan. If the key data does not agree and a key was pressed at that point, it scans the key again.Thus the HL14104 cannot detect a key press shorter than 800T. KS1 KS2 KS3 KS4 KS5 KS6 *) *) *) *) *) *) 1 2 3 4 5 6 1 2 3 4 5 6 768T *) *) *) *) *) *) Key on *) In sleep mode the high / low state of these pins is determined by the S0,S1 bits in the control data. Key scan output signals are not output from pins that are set low. 2) In normal mode • The pins KS1 to KS6 are set high. • When a key is pressed a key scan is started and the keys are scanned until all keys are released. Multiple key presses are recognized by determining whether multiple key data bits are set. • If a key is pressed for longer than 800T ( where T=1/fosc ) the HL14104 outputs a key data read request (a low level on SO pin) to the controller. The controller acknowledges this request and reads the key data. However, if CE is high during a serial data transfer, SO will be set high. • After the controller reads the key data, the key data read requests is cleared ( SO pin is set high ) and the HL14104 performs another key scan. Also note that SO pin, being an open-drain output, requires a pull-up resistor. 13 HL15604 Key input 1 Key input 2 Key Scan 800T 800T 800T CE Write address Write address Read address Write address Read address Read address SI SO Key data read Key data read request Key data read Key data read request Key data read Key data read request 3) In sleep mode • The pins KS1 to KS6 are set to high or low by the S0 and S1 bits in the sleep mode control register. • If a key on one of the lines corresponding to a KS1 to KS6 pin which is set high is pressed, the oscillator on the OSC pin is started and a key scan is performed. Keys are scanned until all keys are released. Multiple key presses are recognized by determining whether multiple key data bits are set. • If a key is pressed for longer than 800T ( where T=1/fosc ) the HL14104 outputs a key data read request (a low level on SO) to the controller. The controller acknowledges this request and reads the key data. However, if CE is high during a serial data transfer, SO will be set high. • After the controller reads the key data, the key data read request is cleared ( SO is set high ) and the HL14104 performs another key scan. However this does not clear sleep mode. Also note that SO, being an open-drain output, requires a pull-up resistor ( between 1 and 10 K). • Sleep mode key scan example Example : S0 = 0, S1 = 1 ( sleep with only KS6 high ) 14 HL15604 “L” KS1 “L” KS2 “L” KS3 “L” KS4 “L” KS5 “H” KS6 *) KIN1 KIN2 KIN3 KIN4 KIN5 *) These diodes are required to reliable recognize multiple key presses on the KS6 line when sleep mode state with only KS6 high, as in the above example. That is, these diodes prevent incorrect operation due to sneak currents in the KS6 key scan output signal when keys on the KS1 to KS5 lines are pressed at the same time. When any one of these keys is pressed, the oscillator on the OSC pin is started and the keys are scanned. Key input (KS6 line) Key Scan 800T CE Write address Write address Read address 800T Write address Read address SI SO Key data read Key data read request Key data read Key data read request Multiple Key Presses Although the HL14104 is capable of key scanning without inserting diodes for dual key presses, triple key presses on the KIN1 to KIN5 input pin lines, or multiple key presses on the KS1 to KS6 output pin lines, multiple presses other than these cases may result in keys that were not pressed recognized as having been pressed. Therefore, a diode must be inserted in series with each key. Application that do not recognize multiple key presses of threes or keys should check the key data for three or more 1 bits and ignore such data. 15 HL15604 9. LCD Display Function 1) 1/4 Duty 1/2 Bias Waveforms COM1 COM2 COM3 COM4 SEG1 ~ SEG41 “Off” at COM1 ~ COM4 SEG1 ~ SEG41 “On” at COM1 ~ COM4 SEG1 ~ SEG41 “On” at COM1 only SEG1 ~ SEG41 “On” at COM2 only SEG1 ~ SEG41 “On” at COM1 and COM2 SEG1 ~ SEG41 “On” at COM3 only SEG1 ~ SEG41 “On” at COM1 and COM3 SEG1 ~ SEG41 “On” at COM2 and COM3 SEG1 ~ SEG41 “On” at COM1, COM2 and COM3 SEG1 ~ SEG41 “On” at COM4 only SEG1 ~ SEG41 “On” at COM2 and COM4 VDD VCL1,VCL2 0 VDD VCL1,VCL2 0 VDD VCL1,VCL2 0 VDD VCL1,VCL2 0 VDD VCL1,VCL2 0 VDD VCL1,VCL2 0 VDD VCL1,VCL2 0 VDD VCL1,VCL2 0 VDD VCL1,VCL2 0 VDD VCL1,VCL2 0 VDD VCL1,VCL2 0 VDD VCL1,VCL2 0 VDD VCL1,VCL2 0 VDD VCL1,VCL2 0 VDD VCL1,VCL2 0 16 HL15604 2) 1/4 Duty 1/3 Bias Waveforms VDD VCL1 VCL2 0 VDD VCL1 VCL2 0 VDD VCL1 VCL2 0 VDD VCL1 VCL2 0 VDD VCL1 VCL2 0 VDD VCL1 VCL2 0 VDD VCL1 VCL2 0 VDD VCL1 VCL2 0 VDD VCL1 VCL2 0 VDD VCL1 VCL2 0 VDD VCL1 VCL2 0 VDD VCL1 VCL2 0 VDD VCL1 VCL2 0 VDD VCL1 VCL2 0 VDD VCL1 VCL2 0 COM1 COM2 COM3 COM4 SEG1 ~ SEG41 “Off” at COM1 ~ COM4 SEG1 ~ SEG41 “On” at COM1 ~ COM4 SEG1 ~ SEG41 “On” at COM1 only SEG1 ~ SEG41 “On” at COM2 only SEG1 ~ SEG41 “On” at COM1 and COM2 SEG1 ~ SEG41 “On” at COM3 only SEG1 ~ SEG41 “On” at COM1 and COM3 SEG1 ~ SEG41 “On” at COM2 and COM3 SEG1 ~ SEG41 “On” at COM1, COM2 and COM3 SEG1 ~ SEG41 “On” at COM4 only SEG1 ~ SEG41 “On” at COM2 and COM4 17 HL15604 10. Power On Reset 1) Supply Voltage Detection ( SVD ) The SVD generates an output signal and results the system when power is first applied and when the voltage drops. When the power supply voltage is less than or equal to the power down detection voltage, which is 2.0V, typical. To assure that this function operates reliably, a capacitor must be added to the power supply voltage Vdd rise time when power is first applied and the power supply voltage Vdd fall time when the voltage drops are both at least 1ms. 2) System Reset If at least 1ms is assured as the supply voltage Vdd rise time when power is applied, a system reset will be applied by the SVD output signal when the supply voltage is brought up. If at least 1ms is assured as the supply voltage Vdd fall time when power drops, a system reset will be applied in the same manner by the SVD output signal when the supply voltage is lowered. VDD SVD SVD t1 CE Display and control data transfer t2 Internal data Undefined Defined System reset period Power supply voltage Vdd rise time : t1 > 1ms Power supply voltage Vdd fall time : t2 > 1ms 3) Internal block states during the reset period • Clock generator Reset is applied and the base clock is stopped and OSC pin state is low. • Common , segment drive and display data Reset is applied and the display is turned off but display data is not cleared. • Key scan Reset is applied and all the key data is set to low. 18 HL15604 4) Output pin states during the reset period • • • • • • • SEG1/P1 to SEG4/P4 SEG5 to SEG39 COM1 to COM4 KS1/SEG40, KS2/SEG41 KS3 to KS5 KS6 SO : : : : : : : Low Low Low Low X High High *) *) **) ***) *) These output pins are forcibly set to the segment output function and held low. **) When power is first applied, these output pins are undefined until the S0 and S1 control data bits have been transferred. ***) Since this output pin is an open-drain output, a pull-up resistor of between 1 and 10§ Ús i required. This pin remains high during the reset period even if a key data read operation is performed. 11. Power Down Mode Sleep mode is set up by setting S0 or S1 in the control data to 1. The segment outputs will all go low and the common outputs will also go low, and the oscillator on the OSC pin will stop ( it will be started by a key press). This reduces power dissipation. This mode is cleared by sending control data with both S0 and S1 set to 0. Note that the SEG1/P1 to SEG4/P4 outputs can be used as general purpose output ports according to the state of the P0 and P1 control data bits, even in sleep mode. 19 HL15604 12. Oscillator Port OSC Pin Diagram R OSC Internal clock SLEEP C Oscillator circuit consists of internal R and C. No Capacitor Using Capacitor OSC Open OSC C HL14104 has internal resistor and capacitor, so it can be oscillation without external capacitor. If you want to adjust the clock period then you adjust it using external capacitor. 20 HL15604 13. Electrical Characteristics Absolute Maximum Rating at Ta=25¡ ÉVss = 0V , Parameter Maximum supply voltage Input voltage Output voltage Symbol VDD max Vin1 Vin2 Vout1 Vout2 Iout1 Iout2 Iout3 Iout4 Pd max Topr Tstg Condition VDD CE,SCK,SI OSC,KIN1 to KIN5, TEST,VCL1,2 SO OSC, SEG1 to SEG41, COM1 to COM4, KS1 to KS6, P1 to P4 SEG1 to SEG41 COM1 to COM4 KS1 to KS6 P1 to P4 Ta = 85¡ É Rating -0.3 to +7.0 -0.3 to +7.0 -0.3 to VDD+0.3 -0.3 to +7.0 -0.3 to VDD+0.3 300 3 1 5 200 -40 to +85 -55 to +125 unit V V V V V uA mA mA mA mW Output current Allowable power dissipation Operating temperature Storage temperature ¡É ¡É Recommend operating ranges at Ta= -40¡ É o +85¡ ÉVss = 0V t , Parameter Supply voltage Input voltage Input high level voltage Input low level voltage Recommended external capacitance Guaranteed oscillation range Data setup time Data hold time CE wait time CE setup time CE hold time High level clock pulse width Low level clock pulse width Rise time Fall time SO output delay time SO rise time Symbol VDD VCL1 VCL2 VIH1 VIH2 VIL COSC fOSC tds tdh tcp tcs tch t0H toL tr tf tdc tdr Condition VDD VCL1 VCL2 CE,SCK,SI KIN1 to KIN5 CE,SCK,SI,KIN1 to KIN5 OSC OSC SCK,SI SCK,SI CE,SCK CE,SCK CE,SCK SCK SCK CE,SCK,SI CE,SCK,SI SO,RPU = 4.7kΩ, CL = 10pF* SO,RPU = 4.7kΩ, CL = 10pF* max 6.0 2/3VDD VDD 1/3VDD VDD 0.8VDD 6.0 0.6VDD VDD 0 0.2VDD 0 30 160 160 160 160 160 160 160 55 100 76 min 4.5 typ unit V V V V V V pF KHz ns ns ns ns ns ns ns ns ns µs µs 160 160 1.5 1.5 Note : *. Since SO is an open-drain output, these values depend on the resistance of the pull-up resistor RPU and load capacitance CL . 21 HL15604 Electrical Characteristics for the Allowable Operating Ranges Parameter Hysteresis Supply voltage detection Input high level current Input low level current Input floating voltage Pull-down resistance Output off leakage current Output high level voltage Symbol VH SVD IIH IIL VIF RPD IOFFH VOH1 VOH2 VOH3 VOH4 VOL1 VOL2 VOL3 VOL4 VOL5 VMID1 VMID2 Output middle level voltage* VMID3 VMID4 VMID5 Oscillator frequency fOSC IDD1 IDD2 IDD3 Condition CE,SCK,SI CE,SCK,SI : V1 = 6.0V CE,SCK,SI : V1 = 0V KIN1 to KIN5 KIN1 to KIN5 : VDD = 5.0V SO : VO = 6.0V KS1 to KS6 : I0 = -500µA P1 to P4 : I0 = -1mA SEG1 to SEG41 : I0 = -20µA COM1 to COM4 : I0= -100µA KS1 to KS6 : I0 = 25µA P1 to P4 : I0 = 1mA SEG1 to SEG41 : I0 = 20µA COM1 to COM4 : I0 = 100µA SO : I0 = 1 mA COM1 to COM4 : 1/2 bias, Io = ¡ ¾ 00µA 1 SEG1 to SEG41 : 1/3 bias, Io = ¡ ¾ 0µA 2 SEG1 to SEG41 : 1/3 bias, Io = ¡ ¾ 0µA 2 COM1 to COM4 : 1/3 bias, Io = ¡ ¾ 00µA 1 COM1 to COM4 : 1/3 bias, Io = ¡ ¾ 00µA 1 OSC : C = 0 Sleep mode VDD = 6.0V, output open, 1/2 bias,fOSC = 38 KHz VDD = 6.0V, output open, 1/3 bias,fOSC = 38 KHz min 1.5 -5.0 50 100 0.05VDD 250 6.0 typ O.1VDD 2.0 max 3.0 5.0 unit V V µA µA V kΩ µA V V V V V V V V V V V V V V KHz µA µA µA VDD -1.2 VDD -0.5 VDD -1.0 VDD -1.0 VDD -1.0 0.2 0.5 Output low level voltage 0.1 1/2 VDD -1.0 2/3VDD -1.0 1/3VDD -1.0 2/3VDD -1.0 1/3VDD -1.0 45 55 350 300 1.5 1.0 1.0 1.0 0.5 1/2VDD +1.0 2/3VDD +1.0 1/3VDD +1.0 2/3VDD +1.0 1/3VDD +1.0 70 100 700 600 Current drain Note : *. Excluding the bias voltage generation divider resistor built into VCL1 and VCL2 22 HL15604 Timing diagram of SIO CE t0H t0L SCK tr tf SI tds tdh SO VIH1 CE VIL SCK tcp tcs tch SI SO tdc tdr 23 HL15604 14. Application 1/2 bias ( for use with normal panels ) (p 1) (p 2) (p 3) (p 4) (general-purpose output ports) Used with the backlight controller or other circuit. OSC +5V *1) VSS TEST VDD C ≥ 0.047uF VCL1 VCL2 C . . . . . From the controller To the controller To the controller power supply S E G 4 CE 1 SCK K K K K K / I I I I I KKKKK SI SO N N N N N S S S S S 5432165432 *2) S E G 4 0 / K S 1 (SEG40) (SEG41) LCD panel (up to 164 segments) COM1 COM2 COM3 COM4 P1 / SEG1 P2 / SEG2 P3 / SEG3 P4 / SEG4 SEG5 . . . . . SEG39 • Key matrix (up to 30 keys) • ¡Æ ¡Æ Note : *1). Add a capacitor to the power supply line so that the power supply voltage VDD rise time when power is applied and the power supply voltage VDD fall time when power drops are both at least 1 ms, as the HL14104 is reset by the SVD. *2). The SO pin, being an open-drain output, requires a pull-up resistor, Select a resistance (between 1 to 10kΩ) appropriate for the capacitance of the external wiring so that signal waveforms are not degraded. 24 HL15604 1/3 bias ( for use with normal panels ) (p 1) (p 2) (p 3) (p 4) (general-purpose output ports) Used with the backlight controller or other circuit. OSC +5V *1) VSS TEST VDD C ≥ 0.047uF C C VCL1 VCL2 . . . . . From the controller To the controller To the controller power supply S E G 4 CE 1 SCK K K K K K / I I I I I KKKKK SI SO N N N N N S S S S S 5432165432 *2) S E G 4 0 / K S 1 (SEG40) (SEG41) LCD panel (up to 164 segments) COM1 COM1 COM2 COM3 P1 / SEG1 P2 / SEG2 P3 / SEG3 P4 / SEG4 SEG5 . . . . . SEG39 • Key matrix (up to 30 keys) • ¡Æ ¡Æ Note : *1). Add a capacitor to the power supply line so that the power supply voltage VDD rise time when power is applied and the power supply voltage VDD fall time when power drops are both at least 1 ms, as the HL14104 is reset by the SVD. *2). The SO pin, being an open-drain output, requires a pull-up resistor, Select a resistance (between 1 to 10kΩ) appropriate for the capacitance of the external wiring so that signal waveforms are not degraded. 25 HL15604 1/3 bias ( for use with large panels ) (p 1) (p 2) (p 3) (p 4) (general-purpose output ports) Used with the backlight controller or other circuit. OSC +5V *1) VSS TEST C ≥ 0.047uF VDD C C • R •R R VCL1 VCL2 . . . . . From the controller To the controller To the controller power supply S E G 4 CE 1 SCK K K K K K / I I I I I KKKKK SI SO N N N N N S S S S S 5432165432 *2) S E G 4 0 / K S 1 (SEG40) (SEG41) LCD panel (up to 164 segments) COM1 COM2 COM3 COM4 P1 / SEG1 P2 / SEG2 P3 / SEG3 P4 / SEG4 SEG5 . . . . . SEG39 • Key matrix (up to 30 keys) • ¡Æ ¡Æ Note : *1). Add a capacitor to the power supply line so that the power supply voltage VDD rise time when power is applied and the power supply voltage VDD fall time when power drops are both at least 1 ms, as the HL14104 is reset by the SVD. *2). The SO pin, being an open-drain output, requires a pull-up resistor, Select a resistance (between 1 to 10kΩ) appropriate for the capacitance of the external wiring so that signal waveforms are not degraded. 26