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ML9042 Datasheet(PDF) 37 Page - LAPIS Semiconductor Co., Ltd. |
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ML9042 Datasheet(HTML) 37 Page - LAPIS Semiconductor Co., Ltd. |
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37 / 58 page  FEDL9042-01 LAPIS Semiconductor ML9042-xx 37/58 Expansion Instruction Codes The busy status of the ML9042 is rather longer than the cycle time of the CPU, since the internal processing of the ML9042 starts at a timing which does not affect the display on the LCD. In the busy status (Busy Flag is “1”), the ML9042 executes the Busy Flag Read instruction only. Therefore, the CPU should ensure that the Busy Flag is “0” before sending an expansion instruction code to the ML9042. 1) Arbitrator Display Line Set RS1 0 RS0 0 R/ W 0 DB7 0 DB6 0 DB5 0 DB4 0 DB3 0 DB2 0 DB1 1 DB0 AS Expansion instruction code: This expansion instruction code sets the Arbitrator display line. The relationship between the status of this bit and the common outputs is as follows: For display examples, refer to LCD Drive Waveforms section. ABE bit CSR bit duty AS bit Shift direction Arbitrator’s common pin L L 1/8 L COM1 COM8 None L L 1/8 H COM1 COM8 None L L 1/16 L COM1 COM16 None L L 1/16 H COM1 COM16 None L H 1/8 L COM8 COM1 None L H 1/8 H COM8 COM1 None L H 1/16 L COM16 COM1 None L H 1/16 H COM16 COM1 None H L 1/9 L COM1 COM9 COM9 H L 1/9 H COM1 COM9 COM1 H L 1/17 L COM1 COM17 COM17 H L 1/17 H COM1 COM17 COM1 H H 1/9 L COM9 COM1 COM1 H H 1/9 H COM9 COM1 COM9 H H 1/17 L COM17 COM1 COM1 H H 1/17 H COM17 COM1 COM17 Note: The execution time of this instruction is 37 s at an oscillation frequency (OSC) of 270 kHz. 2) ABRAM Address Setting RS1 0 RS0 0 R/ W 1 DB7 0 DB6 1 DB5 1 DB4 H4 DB3 H3 DB2 H2 DB1 H1 DB0 H0 Expansion instruction code: This instruction sets the ABRAM address to the data represented by the bits H4 to H0 (binary). The ABRAM addresses are valid until CGRAM or DDRAM addresses are set. The CPU writes or reads the Display-ON data starting from the one represented by the ABRAM address bits H4 to H0 set in the instruction code at that time. When the ABRAM address represented by bits H4 to H0 (binary) is in the range “00” to “13” in hexadecimal, data is output to the LCD as the arbitrator. Note: The execution time of this instruction is 37 s at an oscillation frequency (OSC) of 270 kHz. |
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