ML9042 datasheet(25/58 Pages) LAPIS

25 / 58 page

FEDL9042-01

LAPIS Semiconductor

ML9042-xx

25/58

LCD Display Circuit (COM1 to COM17, SEG1 to SEG100, SSR and CSR)

The ML9042 has 17 common signal outputs and 100 segment signal outputs to display 20 characters (in the 1-line

display mode) or 40 characters (in the 2-line display mode).

The character pattern is converted into serial data and transferred in series through the shift register.

The transfer direction of serial data is determined by the SSR bit. The shift direction of common signals is

determined by the CSR bit. The following tables show the transfer and shift directions:

SSR bit

Transfer direction

SEG1  SEG100

SEG100  SEG1

ABE bit

CSR bit

duty

AS bit

Shift Direction

Arbitrator’s common pin

1/8

COM1

COM8

None

1/8

COM1

COM8

None

1/16

COM1

COM16

None

1/16

COM1

COM16

None

1/8

COM8

COM1

None

1/8

COM8

COM1

None

1/16

COM16

COM1

None

1/16

COM16

COM1

None

1/9

COM1

COM9

COM9

1/9

COM1

COM9

COM1

1/17

COM1

COM17

COM17

1/17

COM1

COM17

COM1

1/9

COM9

COM1

COM1

1/9

COM9

COM1

COM9

1/17

COM17

COM1

COM1

1/17

COM17

COM1

COM17

* Refer to the Expansion Instruction Codes section about the ABE bit, SSR bit, CSR bit, and AS bit.

Signals to be input to the SSR bit, CSR bit, ABE bit, and AS bit should be initially determined at power-on and be

kept unchanged.

ML9042 Datasheet(PDF) 25 Page - LAPIS Semiconductor Co., Ltd.

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