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GENERAL
1-3
This chapter explains the features and basic specifications of the Monolith (MB90M405).
The MB90M405 Series is a general-purpose 16-bit microcontroller developed for applications requiring
fluorescent lamp panel control and contains 60 high-voltage withstand output pins required for a fluorescent
lamp.
As with the original F
2
MC-8L and F
2
MC-16L families, the instruction system inherits the AT architecture, and
has extended high-level language interface instructions and the extended addressing modes, enhanced
multiplication/division instructions (signed), and enhanced bit processing. In addition, a 32-bit accumulator
enables handle long word processing.
1.1
Features
Clock:
PLL Clock multiplication circuit built-in
Operating clock (PLL clock) generated by dividing original oscillation by 2 or by multiplying original
oscillation by 1 to 4 (2.1 MHz to 16.8 MHz at original oscillation of 4.2 MHz). Can be selected.
Minimum instruction execution time is 59.5 ns (when the original oscillation is 4.2 MHz, the PLL clock is
generated by multiplying the original oscillation by 4, and Vcc = 3 V).
It is possible to generate an external output as a clock output by dividing the original oscillation by 16, 32,
64, or 128.
Maximum memory space: 16 Mbytes
24-bit addressing in memory space
Instruction system suited for controller
Applicable data types (bit, byte, word, long-word)
Various addressing modes: 23 types
High code efficiency
High-precision operation with 32-bit accumulator
Signed multiplication and division instructions and enhanced
RETI
instruction
Powerful instruction system applicable to high-level language (C) or multitasking
System stack pointer
Symmetric instruction set and barrel shift instruction
Program patch function (2-address pointer)
Shortened execution time: 4-byte instruction queue
Powerful interrupt function (eight programmable priority levels)
Powerful interrupt function for 32 interrupt factors
Data transfer function (extended intelligent I/O service function: 16 channels maximum)
Low-power consumption (standby mode)
Sleep mode (stops CPU operating clock)
Pseudo-timer mode (stops everything except original oscillation and time-base timer)
Stop mode (stops original oscillation)
CPU Intermittent operation mode
Package
QFP-100 (FPT-100P-M06: 0.65 mm pin pitch)
Process
CMOS technology