Maxim-integrated MAXQ Family Users Guide: MAXQ2000 Supplement Manual do Utilizador descarregar pdf (Página 82)

LCD Controller 1/2 Duty Cycle Drive Example

In this example, SEG0 through SEG3 are used to drive the LCD segments. The segments and common signals are connected as shown

in Figure 14.

Table 42. 1/2 Duty Drive Example Common Signal Selection

According to the 1/2 duty drive memory map table, a value of 0DEh should be written to the LCD0 register as shown in Table 43.

Table 43. 1/2 Duty Drive Example Register Content

MAXQ Family User’s Guide:

MAXQ2000 Supplement

SEG3SEG2SEG1

SEG0

COM1COM0

Figure 14. 1/2 Duty Drive Example Display Connection

SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0

COM0

ON ON ON off

COM1

ON off ON ON

COM2

COM3

BIT 7

COM1

BIT 6

COM0

BIT 5

COM1

BIT 4

COM0

BIT 3

COM1

BIT 2

COM0

BIT 1

COM1

BIT 0

COM0

LCD0

11011110

LCD1

LCD2

LCD3

Maxim Integrated

1 2 ... 77 78 79 80 81 82 83 84 85 86 87 ... 92 93

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Maxim-integrated MAXQ Family Users Guide: MAXQ2000 Supplement Manual do Utilizador Página 82