Features - Fujitsu MB90M405 Hardware Manual

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.
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As with the original F MC-8L and F
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
GENERAL
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MC-16L families, the instruction system inherits the AT architecture, and
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