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Raio RA6963 LCD Controller

Raio RA6963 LCD Controller
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RAiO RA6963 Dot Matrix LCD Controller Specification Version 1.7 May 5, 2011 RAiO Technology Inc. ©Copyright RAiO Technology Inc. 2011

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Update History Version Description Formal Release Update Figure 9-4 Update < Table 8-2 > Max. fOSC to 18MHz. Update < Table 8-4 > Max. fSCP to 9MHz. Update the Chapter 5-4 “Misc Interface” – the description of pin “MDS” and MD[1:0]. Update the description of pin “X1” in Section 5-4. Update Figure 6-13, 6-14, 9-5 and 9-6. Update < Table 6-5 > Command Definition Description. Update Figure 6-10. Update < Table 6-31 > Package Description in Section 6-21. Update < Table 8-2 > Update Figure 9-6 Update the Section 7-1 : Die Form Update : delete the description of FONTSEL Update : the description...

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1. Overview The RA6963 is a dot matrix LCD Controller which fully compatible with T6963C. It supports various LCD Driver for standard or custom-made LCD module. The RA6963 built-in a 128-word CG(Character Generator) ROM that for ASCII, Japanese or numeric display in text mode. It also supports Graphics mode and mixed display with Text. The supported maximum external display RAM is 64Kbyte and the display Window can be moved freely within the allocated memory range. The RA6963 has an 8-bit parallel data bus that can be directly connected to an 8080 series MPU. The RA6963 supports a very...

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LP CDATA FR CH1 CH2 DSPON VDD SDSEL GND TEST2 TEST1 X1 X2 < Figure 4-1 > RA6963L2NA : LQFP-67 Pin, RoHS Compliance Package, Font-01 (Refer to Chapter 6-16) RA6963L2NB : LQFP-67 Pin, RoHS Compliance Package, Font-02 (Refer to Chapter 6-16) 5. Pin Descriptions 5-1 MPU Interface < Table 5-1 > Pin Name Description Data Bus This is bus for data transfer between MPU and RA6963. Read Control RD is a data read signal. When Low, MPU read data from RA6963. Write Control WR is a data write signal. When Low, MPU write data into RA6963. Command/Data Select or Register Select This is a Data or Command...

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5-2 LCD Driver Interface < Table 5-2 > Pin Name Description Frame Latch Latch pulse for column driver. Shift clock pulse for Row Driver Synchronous Data Synchronous Data for Row Driver. Shift Clock Pulse Shift clock pulse for Column Driver in upper area of LCD. Data Output Data output for Odd Columns in upper area of LCD. Data Output Data output for even columns in both upper and lower SDSEL = Low LCD. Display On DSPON SDSEL = High area of LCD. Data output for columns in both upper and lower area of Display On/Off control signal. When HALT or RST is Low, DSPON output Low (LCD Display Off)....

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5-4 Misc. Interface < Table 5-4 > Pin Name DUAL Description Scan Select DUAL = Low DUAL = High Dual-Scan Mode. Signal-Scan Mode. LCD Size Selection One Screen DUAL Crystal Oscillator Input A crystal / ceramic oscillator circuit is built in. The oscillation frequency is adjusted according to the display size. If using an external clock, use the X1 pin as the clock input. (X2 open.) External capacitors 15 to 20pF for Crystal or Ceramic oscillator. Crystal Oscillator Output Font Selection Columns Selection Data Transfer Mode Sending data by simple serial mode. Sending data by odd/even...

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Description Halt Signal HALT = High Reset Signal Normal Mode. Normal mode. RA6963 built-in a Pull-Hi resistor. RST = High Test Pins These are test pins. No need for connection(NC). Check Signals

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6. Functions Description 6-1 Functional Definition After power on, it is necessary to reset. The RST is kept Low between 5 clocks up (oscillation clock). When HALT = Low, the oscillation stops. The power supply for the LCD must be turned off, to protect the LCD from DC bias. The HALT function( HALT = Low) includes the RESET function( RST =Low). The column/line counter and display register are cleared by RST . (Other registers are not cleared.) Disable the display using the clear-display register The status must be checked before data or commands are sent. The MSB=0 status check must be done...

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6-3 Row / Column and Oscillation Clock The frequency of the crystal oscillator is adjusted by the following formula. fOSC fSCP fR M N : Frequency of oscillation : Frequency of shift clock (fSCP = fOSC / 2 ) : Frequency of Frame : Number of characters on one line (number of dots on one line 8M) For all font sizes (e.g. 7 x 8, 7 x 8, 5 x 8) the oscillation frequency remains constant. : Number of rows (Duty=1/8N) 8M x 8N= 1 fR fSCP fOSC = fR x 64 x 2 x M x N (fR = 60Hz) < Table 6-2 > Single-Scan. Lower

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6-4 RAM Interface The external RAM is used to store display data (text, graphic and external CG data). With single-scan, text data, graphic data and external CG data can be freely allocated to the memory area (64 KB max). With dual-scan, LCD-I is allocated to 0000h to 7FFFh (32 KB max), LCD-II is allocated to 8000h to FFFFh (32-KB Max). Text data, graphic data and external CG data can be freely allocated in LCD-I. In LCD-II, the same addresses must be allocated as in LCD-I, except A15. A15 determines selection of LCD-I or LCD-II. It can be used the address-decoded signals CE0 (0000h to...

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6-5 Communications with MPU 6-5-1 Status Read A status check must be performed before data is read or written. Status Check The Status of RA6963 can be read from the data lines. < Table 6-3 > RD Status Word The RA6963 status word format is as follows: MSB Check command execution capability Check data read/write capability Check Auto mode data read capability Check Auto mode data write capability Check controller operation capability Error flag. Used for Screen copy commands. Check the blink condition 0: Disable 1: Enable 0: Disable 1: Enable 0: Disable 1: Enable 0: Disable 1: Enable 0:...

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Dot Matrix LCD Controller Status Checking Flow a) AUTO MODE STATUS Note 4: When using the MSB=0 command, a Status Read must be performed. If a status check is not carried out, the RA6963 cannot operate normally, even after a delay time. The hardware interrupt occurs during the address calculation period (at the end of each line). If a MSB=0 command is sent to the RA6963 during this period, the RA6963 enters Wait status. If a status check is not carried out in this state before the next command is sent, there is the possibility that the command or data will not be received.

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Raio RA6963 LCD Controller
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