UPD17231 datasheet(64/94 Pages) RENESAS

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Data Sheet U14360EJ1V0DS00

µPD17230, 17231, 17232, 17233, 17234, 17235, 17236

11. ASSEMBLER RESERVED WORDS

11.1 Mask Option Directives

When developing the

µ PD17236 program, mask options must be specified by using mask option directives in the

program.

To select the PIA0 pin and remote controller carrier generator clock of the

µPD17236, a mask option must be

specified.

11.1.1

OPTION and ENDOP directives

That portion of the program enclosed by the OPTION and ENDOP directives is called a mask option definition block.

This block is described in the following format:

Description format:

Symbol

Mnemonic

Operand

Comment

[Label: ]

OPTION

[;Comment]

ENDOP

11.1.2

Mask option definition directives

Table 11-1 lists the directives that can be used in the mask option definition block.

Here is an example of mask option definition:

Description example:

Symbol

Mnemonic

Operand

Comment

OPTION

OPTP1A0

INP1A0

; Sets P1A0 pin in input mode

OPTPOC

USEPOC

; Internal low-voltage detector circuit

OPTRFX

USEFX

; Sets clock for carrier generation of remote controller

; carrier generator to fX

ENDOP

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