ML63189B データシートの表示（PDF） - Oki Electric Industry

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ML63189B

4-Bit Microcontroller with Built-in1024-Dot Matrix LCD Drivers and Melody Circuit, Operating at 0.9 V (Min.)

Oki Electric Industry 

1Semiconductor

FEDL63187B-06

ML63187B/63189B

MASK OPTION

In the ML63187B and ML63189B use the mask option to specify the following functions:

• Low-Speeed clock oscillation circuit

Specify the crystal oscillation circuit or the RC oscillation circuit for the low-speed clock oscillation

circuit.

• Reset signal sampling

Specify whether or not the reset signal will be sampled at 2 kHz.

When specifying “will carry out 2 kHz sampling,” hold the RESET pin at a “H” level for 1 ms or more.

To use the mask option, assign mask option data in the application program in accordance with the formats below.

The mask option area for each device is an application program execution disabled area.

Mask Option Data Assignment Format

Function

Mask option area bit data

Option to be selected

Low-speed clock oscillation circuit

0 Crystal oscillation circuit

ML63187B:3FE0H bit 0

(crystal oscillation circuit/RC oscillation circuit)

1 RC oscillation circuit

Reset signal sampling

(will/will not carry out 2 kHz sampling)

0 Will carry out 2 kHz sampling

ML63189B:7FE0H bit 1

1 Will not carry out 2 kHz sampling

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