NJU6635 New Japan Radio Co.,Ltd, NJU6635 Datasheet
NJU6635
Related parts for NJU6635
NJU6635 Summary of contents
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... DOT MATRIX LCD GENERAL DESCRIPTION The NJU6635 is a 1Chip Dot Matrix LCD controller driver for up to 16-character 2-line display with double height function. It contains microprocessor Instruction decoder controller, character generator ROM/RAM and common and segment drivers. The bleeder resistance generates for LCD Bias voltage Internally ...
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... PAD LOCATION CHIP SIZE :5.49 x 1.37mm CHIP CENTER :X BUMP SIZE : BUMP HEIGHT :17.5 m Typ. BUMP MATERIAL :Au NJU6635 ...
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... COM COM 10 541 133 COM COM 9 541 134 DMY_13 DMY_13 541 135 DMY_14 DMY_14 541 136 DMY_15 DMY_15 541 137 DMY_16 DMY_16 541 NJU6635 750 541 53 690 541 52 630 541 51 570 541 50 510 541 49 450 541 48 390 541 47 330 ...
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... Address Instruction counter Decoder (ID) 7 Display Data RAM (DD RAM bits Character Character Generator Generator (CG RAM) (CG RAM) 9,600bits 32 x 5bits 5 5 Parallel to serial Converter NJU6635 Timing Power Generator RESET On RESET COM – 1 COM SEG – 1 SEG 80 80 ...
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... LCD Common driving signal Terminals LCD segment driving signal Terminals I Reset Terminal. When the “L” level Input over than 1.2ms to this terminal, the system will be reset.(f Dummy Terminal These terminals are electrically open. NJU6635 = 0V SS =540kHz) OSC ...
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... The NJU6635 incorporates two 8-bit registers, an Instruction Register (IR) and a Data Register (DR). The Register (IR) stores Instruction codes such as “Clear Display” and “Return Home”, and address data for Display Data RAM (DD RAM) and Character Generator RAM (CG RAM). The MPU can write the Instruction code and address data to the Register (IR), but it can not read out from the Register (IR) ...
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... Display The NJU6635 has two kinds of addressing mode as “ Addressing mode 1 ” and “ Addressing mode 2 ” which is determined by the Function Set Instruction (A=0 and 1). “Addressing mode 1” uses sequential address of (00) last half 16-character. “Addressing mode 2 “ does not use sequential address like as (00) ...
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... The storage capacity 240 kinds dots character pattern. between character code and standard character pattern is shown in Table 2. User-defined character pattern ( Custom Font ) are also available by mask option. Table 2. CG ROM Character Pattern ( ROM version –02 ) Upper 4 bit (Hexadecimal) NJU6635 The correspondence ...
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... H NJU6635 – (03 Lower bit Character 0 Pattern Example ( Cursor Position Character Pattern ...
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... If the AC stores the CG RAM address data, the cursor and blink are displayed in the meaningless position cursor position is shown as follows Cursor Position NJU6635 The cursor or blinks 15 16 Display Position 0F DD RAM Address 1F (Hexadecimal) ...
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... In this case, the initialization by MPU software is required. (2-2) Initialization By Hardware The NJU6635 incorporates RESET terminal to initialize the all system. When the “L” level input over than 1.2ms to the RESET terminal, the reset sequence is executed. In this time, the busy signal output during 10ms after RESET terminal goes to “H”. ...
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... The NJU6635 incorporates two resisters, which are Instruction Register (IR) and a Data Register (DR). These two registers store control information temporarily to allow interface between NJU6635 and MPU or peripheral ICs operating different cycles. The operation of NJU6635 is determined by this control signal from MPU. The control information includes register selection signals (RS), read/write signals (R/W) and ...
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... (0F) , are expanded to double height size ( FUNCTION to (0F NJU6635 written H is written When this Instruction (1F) or (40 ...
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... I/D S and the codes of (I/D) and (S) are written into DB 2 FUNCTION FUNCTION (D), DB (C) and DB0(B) as shown below FUNCTION FUNCTION FUNCTION NJU6635 and the codes of 3 ...
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... S/C R/L (R/L) as shown below. 2 FUNCTION NJU6635 ...
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... FUNCTION FUNCTION FUNCTION FUNCTION Lower order bit as shown above RAM address : (00) – (1F NJU6635 DB 0 =Don’t Care M0 (DL), DB (A), DB (M1 and the 6 ...
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... BF Higher order bit This instruction reads out the internal status of the NJU6635. When this instruction is executed, the busy flag (BF) which indicates the internal operation, is read out from DB CG RAM or DD RAM is read out from DB determined by the previous instruction). (BF)=1 indicates that internal operation is in progress. The next instruction is inhibited when (BF)=1 ...
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... RAM) must be implemented just before this instruction or from the second time read out instruction execution if the read out instruction is executed 2 times consecutively Lower order bit Lower order bit NJU6635 =Don’t Care D ...
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... Example for set address increment and cursor right shift when the data write to the RAM. NJU6635 Initialized. No display appears. 0 Set the 8-bit operation, 32-Character 1-Line display, Pin configuration mode A, Addressing Mode 1. 0 Turns on display and cursor. ...
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... If the power supply conditions for the correct operation of the internal reset circuits are not method, the NJU6635 must be initialized by the instruction. a) Initialization by Instruction in 8-bit interface Power On Wait more than 15 ms after V rises to 4. R/W DB Function Set 0 0 Wait more than 4.1ms ...
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... Example for set address increment and cursor right shift when the data write the RAM. NJU6635 time than each ...
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... LCD DISPLAY NJU6635 incorporates bleeder resistance to generate the LCD display driving waveform. The bleeder resistance is set 1/5 bias suitable for 1/18 duty ratio and 1.5k The decoupling capacitor should be connected between V The value of capacitor is determined depending on the actual LCD panel display evaluation. Power Supply The V is maximum swing of LCD waveform ...
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... frame 1 frame = 7 9.472(ms) Frame frequency = 1/9.472(ms) = 105.6(Hz) (5)Interface with MPU NJU6635 can be interfaced with both of 4/8 bit MPU and the two-time 4-bit or one-time 8-bit data transfer is available. (5-1)8-bit MPU interface RS R/W E Internal Status DB Data 7 Busy Flag ...
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... Instruction Register (IR) No Busy Busy Flag Instruction Check Writing Readout Busy Flag(BF) Reading data Register (DR) and Address counter(AC) NJU6635 8-bit length) and ...
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... V -1.0 DD – 0 – 2.4 – – – – 2 =0V 5 1.7 3.7 =5V, Ta= 270 NJU6635 (Ta=25 C) UNIT due to the stabilized operation for =0V, Ta=- TYP MAX UNIT NOTE 5.0 5.5 V – – 0.8 V – – 1.0 V – ...
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... Bleeder resistance RS, R/W, RESET Terminals V PMOS V SS (Pull-up MOS PMOS NMOS COM ), and supply voltage ( NJU6635 NJU6635 NMOS V SS ENABLE DATA , and and each segment ...
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... RS R – Fig.1 The timing characteristics of the bus write operating sequence.(Write from MPU to NJU6635) Read operation sequence ( Read from NJU6635 to MPU) PARAMETER Enable Cycle Time Enable Pulse “High” level Time Low” level Enable Rise Time, Fall Time ...
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... CONDITION MIN TYP f =540kHz 1.2 OSC V RSL CONDITION MIN TYP – 0.1 – 0.2V *t time in a short period OFF or t OFF cyclical ON/OFF t 1ms OFF NJU6635 MAX UNIT – – ms (Ta=- MAX UNIT – – – ms specifies the power OFF OFF ...
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... LCD DRIVING WAVE FROM NJU6635 1/16 Duty driving COM COM COM COM 1 COM COM COM COM 7 COM COM 2 COM COM COM COM 12 COM ...
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... APPLICATION CIRCUITS M0=0, M1=0 (32-character 1-line Mode A) M0=0, M1=1 (16-character 2-line Mode A) NJU6635 ...
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... M0=1, M1=0 (32-character 1-line Mode B) M0=1, M1=1 (16-character 2-line Mode B) NJU6635 ...
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... M0=0, M1=1 (16-character 1-line Mode A) M0=1, M1=1 (16-character 1-line Mode B) NJU6635 ...
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... NJU6635 MEMO [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including ...