Semiconductor

ML63293

Preliminary

4-Bit Microcontroller with Built-in LCD Driver ( 68SEG.

× 32COM. ) and Melody Circuit

1 of 5

This version : Feb.10,1999

GENERAL DESCRIPTION

The ML63293 is a CMOS 4-bit microcontroller with built-in LCD driver and Melody circuit.

The ML63293 is an M63xxx series mask ROM-version product of OLMS-63K family, which employs

Oki’s original CPU core nX-4/250.

The ML63293 contains 64K-word program memory, 3K-nibble data memory, 4-bit input port, 16-bit

output ports, 24-bit input/output port, LCD driver for up to 2176 segments, and melody circuit.

The ML63Q290 is the flash EEPROM version of ML63293.

The ML63Q290 is used to evaluate the software development.

APPLICATION

The ML63293 is suitable for applications such as games, toys, watches, etc. which are provided with

an LCD display and Melody output.

FEATURES

· Extensive instruction set

408 instructions

Transfer, rotate, increment,/decrement, arithmetic operations, comparison, logic operations,

mask operations, bit operations, ROM table reference, external memory transfer, stack

operations, flag operations, jump, conditional branch, call / return, control.

· Wide variety of addressing modes

Indirect addressing of four data memory types, with current bank register, extra bank register,

HL register and XY register.

Data memory bank internal direct addressing mode.

· Processing speed

2 clocks per machine cycle, with most instructions executed in 1 machine cycle.

Minimum instruction execution time : 61

µs ( @32.768kHz system clock )

1

µs ( @2MHz system clock )

· Clock generation circuit

Low-speed clock

: Crystal oscillation or RC oscillation selected with mask

option ( 30k to 80kHz )

High-speed clock

: Ceramic oscillation or RC oscillation selected with

software ( 2MHz max. )

The information contained herein can change without notice owing to product and/or technical improvements.

Before using the product, please make sure that the information being referred to is up-to-date.