FEDL63295A-02
1
Semiconductor
ML63295A
GENERAL DESCRIPTION
This version:
Jul. 2001
Previous version: Nov. 2000
4-Bit Microcontroller with Built-in 3072-Dot Matrix LCD Driver and Melody Circuit
The ML63295A is a CMOS 4-bit microcontroller that employs Oki’s original CPU core nX-4/250.
The ML63295A operates on a power supply voltage of 6 V.
With built-in 3072-dot matrix LCD drivers (96 SEG.
×
32 COM.), the ML63295A is suited for applications such as
electronic dictionaries with an LCD.
FEATURES
• Extensive instruction set
439 instructions:
Transfer, rotate, increment/decrement, arithmetic operations, compare, 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 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
• Processing speed
2 clocks per machine cycle, with most instructions executed in 1 machine cycle
Minimum instruction execution time : 61
µs
(@ 32.768 kHz system clock)
: 1
µs
(@ 2 MHz system clock)
• Clock generation circuit
Low-speed clock : Crystal oscillation or RC oscillation selected with mask option
(30 kHz to 80 kHz)
High-speed clock: Ceramic oscillation or RC oscillation selected with software
(2 MHz max)
• Program memory space
32 K words
Basic instruction length is 16 bits/1word.
• Data memory space
2048 nibbles
• External data memory space
64 Kbytes (expandable furthermore by using the I/O ports)
• Stack level
Call stack level
Register stack level
: 16 levels
: 16 levels
1/38
OKI [ OKI ELECTRONIC COMPONETS ]
