UPD16686 datasheet(79/99 Pages) NEC

79 / 99 page

Data Sheet S15548EJ1V0DS

µµµµPD16686, 16687

4.31 Static Icon Address (R40)

The static icon address specifies the address in the static icon data RAM accessed by the CPU.

This address is automatically incremented each time the static icon data RAM is accessed.

-----

SIA2

SIA1

SIA0

Default settings (initial values set by reset command)

-----

4.32 Static Icon Data Register (R41)

The static icon data register is used when accessing the static icon data RAM. When this register is write-accessed, the

data is written directly to the static icon data RAM.

1D7

Default settings (initial values set by reset command)

--------

4.33 Static Icon Contrast (R42)

The static icon contrast adjusts the contrast of static icons using phase modulation.

The pulse width of the ON signal that is output in static drive mode is divided into 32 levels (1/32 to 32/32 pulse width) and

the dot output's timing changes during output according to the phase modulation ratio recorded in bits ICS4 to ICS0 of the

static icon contrast (R42), as is shown in Table 4-14.

ICS3ICS2ICS1ICS0

Table 4-14. Static Icon Contrast (R42) Setting

ICS4

ICS3

ICS2

ICS1

ICS0

Phase Modulation Ratio

00000

0/32

00001

1/32

00010

2/32

00011

3/32

11101

29/32

11110

30/32

11111

31/32

Default settings (initial values set by reset command)

----

0000

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