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NJU6676 Datasheet(PDF) 8 Page - New Japan Radio |
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NJU6676 Datasheet(HTML) 8 Page - New Japan Radio |
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8 / 46 page  NJU6676 PRELIMINARY No. Symbol Description 16 RD (E) <In case of 80 Type MPU> RD signal of 80 type MPU input terminal. Active "L" During this signal is "L" , D0 to D7 terminals are output. <In case of 68 Type MPU> Enable signal of 68 type MPU input terminal. Active "H" <In case of 80 Type MPU> Connect to the 80 type MPU WR signal. Actie "L". The data on the data bus input syncronizing the rise edge of this signal. <In case of 68 Type MPU> The read/write control signal of 68 type MPU input terminal. R/W H L State Read Write 15 WR (R/W) MPU interface type selection terminal. C86 H L State 68 Type 80 Type 71 C86 Serial or parallel interface selection terminal. P/S Chip Select Data/Command Data Read/Write Serial Clock “H” CS1, CS2 A0 D0 ∼D7 RD,WR - “L” CS1, CS2 A0 SI(D7) Write Only SCL(D6) 72 P/S RAM data and status read operation do not work in mode of the serial interface. In case of the serial interface (P/S="L"),RD and WR must be fixed "H" or "L", and D0 to D5 are high impedance. 2 3 OSC1 OSC2 System clock input terminal for Maker testing.(This terminal should be Open) For external clock operation, the clock shoud be input to OSC1 terminal. 69 CLS Terminal to select whether or enable or disable the display clock internal oscillator circuit. CLS=”H” : Internal oscillator circuit is enabld CLS=”L” : Internal oscillator circuit is disabled (requires external input) When CLS=”L”, input the display clock through the CL terminal. This terminal selects the master/slave operation for the NJU6676. Master operation outputs the timing signals that are required for the LCD display, while slave operation inputs the timing signals required for the LCD, synchronizing the LCD system. M/S = ”H” : Master operation M/S = ”L” : Slave operation The following is true depending on the M/S and CLS status: M/S CLS OSC. Power Supply Circuit CL FR FRS DOF “H” Available Available Output Output Output Output “H” “L” Not Avail. Available Input Output Output Output “L” * Not Avail. Not Avail. Input Input Output Input 68 M/S *:Don’t Care |
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