MB90F378

• Clock
• Embedded PLL clock multiplication circuit
• Operating clock (PLL clock) can selected from divided-by-2 of oscillation or one to four times the oscillation (at oscillation of 4 MHz to 20 MHz)
• Minimum instruction execution time of 50 ns (at oscillation of 5 MHz, four times the PLL clock, operation at V_CC of 3.3 V)
• CPU addressing space of 16 Mbytes
   Internal 24-bit addressing
• Instruction set optimized for controller applications
• Rich data types (bit, byte, word, long word)
• Rich addressing mode (23 types)
• High code efficiency
• Enhanced precision calculation realized by the 32-bit accumulator
• Instruction set designed for high level language (C) and multi-task operations
• Adoption of system stack pointer
• Enhanced pointer indirect instructions
• Barrel shift instructions
• Program patch function (2 address pointer)
• Improved execution speed
   4-byte instruction queue
• Powerful interrupt function
• Priority level programmable : 8 levels
• 32 factors of stronger interrupt function
• Automatic data transmission function independent of CPU operation
• Extended intelligent I/O service function (EI2OS)
• Maximum 16 channels
• Low-power consumption (standby) mode
• Sleep mode (mode in which CPU operating clock is stopped)
• Timebase timer mode (mode in which operations other than timebase timer and watch timer are stopped)
• Stop mode (mode in which all oscillations are stopped)
• CPU intermittent operation mode
• Watch mode
• Dual operation flash
   Upper and lower banks of flash memory can be used to execute erase/program and read operation concurrently (MB90F378)
• Package
   LQFP-144 (FPT-144P-M12 : 0.4 mm pitch)
• Process
   CMOS technology

The MB90F378 series is a line of general-purpose, 16-bit microcontrollers designed for those applications which require high-speed real-time processing. The instruction set is designed to be optimized for controller applications which inheriting the AT architecture of F²MC-16LX family and allow a wide range of control tasks to be processed efficiently at high speed.

A built-in LPC interface, serial IRQ and PS/2 interface simplifies communication with host CPU and PS/2 devices in computer system. Moreover, SMbus compliant I²C*² and A/D converter implements the smart battery control.With these features, the MB90378 series matches itself as keyboard controller with smart battery control.

While inheriting the AT architecture of the F2MC*1 family, the instruction set for the F2MC-16LX CPU core of the MB90F378 series incorporates additional instructions for high-level languages, supports extended addressing modes, and contains enhanced multiplication and division instructions as well as a substantial collection of improved bit manipulation instructions. In addition, the MB90F378 series has an on-chip 32-bit accumulator which enables processing of long-word data.

*1 :   F²MC stands for FUJITSU Flexible Microcontroller, a registered trademark of FUJITSU LIMITED.
*2 : Purchase of Fujitsu I²C components conveys a license under the Philips I²C Patent Rights to use, these components in an I²C system provided that the system conforms to the I²C Standard Specification as defined by Philips.