ML63187 Datasheet, PDF (1/36 Pages) OKI electronic componets – 4-Bit Microcontroller with Built-in 1024-Dot Matrix LCD Drivers and Melody Circuit, Operating at 0.9 V (Min).

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Previous version: Mar. 1999
ML63187/63189B
4-Bit Microcontroller with Built-in 1024-Dot Matrix LCD Drivers and Melody Circuit,
Operating at 0.9 V (Min.)
GENERAL DESCRIPTION
The ML63187/63189B is a CMOS 4-bit microcontroller with built-in 1024-dot matrix LCD drivers
and operates at 0.9 V (min.). The ML63187/63189B is suitable for applications such as games,
toys, watches, etc. which are provided with an LCD display.
The ML63187/63189B is an M6318x series mask ROM-version product of OLMS-63K family,
which employs Oki's original CPU core nX-4/250.
FEATURES
• Rich instruction set
408 instructions
Transfer, rotate, increment/decrement, arithmetic operations, comparison, logic operations,
mask operations, bit operations, ROM table reference, stack operations, flag operations,
branch, conditional branch, call/return, control.
• Rich selection 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
Two clocks per machine cycle, with most instructions executed in one machine cycle.
Minimum instruction execution time : 61 ms (@ 32.768 kHz system clock)
1 ms (@ 2 MHz system clock)
• Clock generation circuit
Low-speed clock
: Crystal oscillation or RC oscillation selected with
mask option (30 to 80 kHz)
High-speed clock
: Ceramic oscillation or RC oscillation selected with
software (2 MHz max.)
• Program memory space
• ML63187 : 16K words
• ML63189B : 32K words
Basic instruction length is 16 bits/1 word
• Data memory space
• ML63187 : 1024 nibbles
• ML63189B : 1536 nibbles
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