Overview; Features - Oki ML63611 User Manual

1. Overview

1.1 Overview
The ML63611 is a CMOS 4-bit microcontroller using Oki's original CPU core nX-4/250.
The ML63611 is provided with the mask options of eight items of selection including (1.5 V or 3.0 V) power
supply specifications and (With or Without) the regulator circuit for the LCD bias reference voltage.
When a 3.0 V power supply specificaiton is selected, the halver circuit can be used to decrease power
consumption. The halver circuit cannot be used when a 1.5 V power supply specification is selected.
When "With the regulator circuit for the LCD bias reference voltage" is selected, the LCD bias reference voltage
will be generated based on the output voltage of the regulator circuit. When "Without the regulator circuit for the
LCD bias reference voltage" is selected, the LCD bias reference voltage will be generated based on the power
supply voltage; for this reason, the LCD bias voltage decreases as the power supply voltage decreases, causing the
display density of the LCD panel to thin down.
The ML63611 has incorporated in it an 8K-word program memory, a 1K-nibble data memory, four input ports,
four output ports (only when the mask option of LCD driver pins is selected), 16 I/O ports, a melody circuit, a
serial port, four 8-bit timers, and a 64-segment LCD driver (60 segment lines and 4 common lines, max.). (A
part of the SEG pins can also be selected as output port pins or COM pins depending on the mask option.)
!
Note:
In this manual, for convenience of description, the symbols OPTION A, OPTION B, OPTION C, and OPTION D are
used in accordance with the mask option selection of a power supply specification (1.5 V or 3.0 V) and the regulator
circuit for the LCD bias reference voltage (With or Without), as shown below.
• OPTION A:
1.5 V power supply specification (halver circuit disabled), without the regulator circuit for the LCD
bias reference voltage
• OPTION B:
1.5 V power supply specification (halver circuit disabled), with the regulator circuit for the LCD bias
reference voltage
• OPTION C:
3.0 V power supply specification (halver circuit enabled), without the regulator circuit for the LCD
bias reference voltage
• OPTION D:
3.0 V power supply specification (halver circuit enabled), with the regulator circuit for the LCD bias
reference voltage
1.2

Features

The ML63611 has the following features.
a. Extensive instruction set
•
407 instructions
Transfer, rotate, increment/decrement, arithmetic operations, compare, logic operations, mask
operations, bit operations, ROM table reference, stack operations, flag operations, jump, conditional
branch, call/return, control
b. Wide variety of addressing modes
•
Indirect addressing mode for 4 types of data memory with current bank register, extra bank register, HL
register and XY register
•
Data memory bank internal direct addressing mode
OPTION A (C): 1.5 V (3.0 V), Without regulator
circuit for LCD bias
1 – 1
OPTION B (D): 1.5 V (3.0 V), With regulator
ML63611 User's Manual
Chapter 1 Overview
circuit for LCD bias