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■ DESCRIPTION

The MB90540/545 series with FULL-CAN*1 and FLASH ROM is specially designed for automotive and industrial applications. Its main features are two on board CAN Interfaces (one for MB90V545 series) , which conform to V2.0 Part A and Part B, supporting very flexible message buffer scheme and so offering more functions than a normal full CAN approach. The instruction set by F2MC-16LX CPU core inherits an AT architecture of the F2MC*2 family with additional instruction sets for high-level languages, extended addressing mode, enhanced multiplication/division instructions, and enhanced bit manipulation instructions.The micro controller has a 32-bit accumulator for processing long word data.The MB90540/545 series has peripheral resources of 8/10-bit A/D converters, UART (SCI) , extended I/O serial interfaces, 8/16-bit timer, I/O timer (input capture (ICU) , output compare (OCU) ) .

■ FEATURES

? Clock

Embedded PLL clock multiplication circuit

Operating clock (PLL clock) can be selected from : divided-by-2 of oscillation or one to four times the oscillation

Minimum instruction execution time : 62.5 ns (operation at oscillation of 4 MHz, four times the oscillation clock)

Subsystem Clock : 32 kHz

? Instruction set to optimize controller applications

Rich data types (bit, byte, word, long word)

Rich addressing mode (23 types)

Enhanced signed multiplication/division instruction and RETI instruction functions

Enhanced precision calculation realized by the 32-bit accumulator

? Instruction set designed for high level language (C language) and multi-task operations

Adoption of system stack pointer

Enhanced pointer indirect instructions

Barrel shift instructions

? Program patch function (for two address pointers)

? Enhanced execution speed : 4-byte Instruction queue

? Enhanced interrupt function : 8 levels, 34 factors

? Automatic data transmission function independent of CPU operation

Extended intelligent I/O service function (EI2OS)

? Embedded ROM size and types

Mask ROM : 256 Kbytes / 64 Kbytes / 128 Kbytes

Flash ROM : 128 Kbytes/256 Kbytes

Embedded RAM size : 2 Kbytes/4 Kbytes/6 Kbytes/8 Kbytes (evaluation chip)

? Flash ROM

Supports automatic programming, Embedded Algorithm TM*

Write/Erase/Erase-Suspend/Resume commands

A flag indicating completion of the algorithm

Hard-wired reset vector available in order to point to a fixed boot sector in Flash Memory

Erase can be performed on each block

Block protection with external programming voltage

? Low-power consumption (stand-by) mode

Sleep mode (mode in which CPU operating clock is stopped)

Stop mode (mode in which oscillation is stopped)

CPU intermittent operation mode

Clock mode

Hardware stand-by mode

? Process

0.5 ?m CMOS technology

? I/O port

General-purpose I/O ports : 81 ports

? Timer

Watchdog timer : 1 channel

8/16-bit PPG timer : 8/16-bit × 4 channels

16-bit re-load timer : 2 channels

? 16-bit I/O timer

16-bit free-run timer : 1 channel

Input capture : 8 channels

Output compare : 4 channels

? Extended I/O serial interface : 1 channel

? UART 0

With full-duplex double buffer (8-bit length)

Clock asynchronized or clock synchronized (with start/stop bit) transmission can be selectively used.

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