Renesas PCA4738L-64A Información técnica descargar pdf (Pagina 40)

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

3822 Group

MITSUBISHI MICROCOMPUTERS

LCD Display RAM

Address 004016 to 004F16 is the designated RAM for the LCD dis-

play. When “1” are written to these addresses, the corresponding

segments of the LCD display panel are turned on.

Fig. 35 LCD display RAM map

LCD Drive Timing

The LCDCK timing frequency (LCD drive timing) is generated in-

ternally and the frame frequency can be determined with the

following equation;

f(LCDCK) =

Frame frequency =

(frequency of count source for LCDCK)

(divider division ratio for LCD)

f(LCDCK)

(duty ratio)

3456

COM1 C

COM3

M0COM1C

SEG0

SEG2

SEG4

SEG6

SEG8

SEG10

SEG12

SEG14

SEG16

SEG18

SEG20

SEG22

SEG24

SEG26

SEG28

SEG30

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Renesas PCA4738L-64A Información técnica Pagina 40