MSM63184A Datasheet, PDF (1/30 Pages) OKI electronic componets – 4-Bit Microcontroller with Built-in 640-Dot Matrix LCD Drivers, Operating at 0.9 V (Min.)

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MSM63184A
4-Bit Microcontroller with Built-in 640-Dot Matrix LCD Drivers, Operating at 0.9 V (Min.)
GENERAL DESCRIPTION
The MSM63184A is an enhanced version of the MSM63184B in which supply currents have been
improved.
The MSM63184A is a CMOS 4-bit microcontroller with built-in 640-dot matrix LCD drivers and
operates at 0.9 V (min.). The MSM63184A is suitable for applications such as games, toys,
watches, etc. which are provided with an LCD display.
The MSM63184A is an M6318x series mask ROM-version product of OLMS-63K family, which
employs Oki's original CPU core nX-4/250.
The MSM63P180 is the one-time-programmable ROM version of MSM63188A, having one-time
PROM (OTP) as internal program memory.
The MSM63P180 is used to evaluate the software development.
FEATURES
• Rich instruction set
439 instructions
Transfer, rotate, increment/decrement, arithmetic operations, comparison, logic operations,
mask operations, bit operations, ROM table reference, external memory transfer, 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
High-speed clock
: 32.768 kHz crystal oscillator
: 2 MHz (Max.) RC or ceramic oscillator select
• Program memory space
8K words
Basic instruction length is 16 bits/1 word
• Data memory space
640 nibbles
• External data memory space
Expandable beyond 64 Kbytes by using I/O port.
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