Fujitsu MB90F342E Locked Microcontroller IC Flash Firmware Cloning starts from attack fujitsu MCU MB90F342E security fuse bit and readout microprocessor flash memory chip content
The MB90340E-series with up to 2 FULL-CAN* interfaces and Flash ROM is especially designed for automotive and other industrial applications. Its main feature are the on-board CAN Interfaces, which conform to V2.0 Part A and Part B, while supporting a very flexible message buffer scheme and so offering more functions than a normal full CAN approach. With the new 0.35 mm CMOS technology, Fujitsu now offers on-chip Flash ROM program memory up to 512 Kbytes.
The power to the MCU core (3V) is supplied by a built-in regulator circuit, giving these microcontrollers superior performance in terms of power consumption and tolerance to EMI.
* : Controller Area Network (CAN) – License of Robert Bosch GmbH Note : F2MC is the abbreviation of FUJITSU Flexible Microcontroller.
· CPU
Instruction system best suited to controller
Wide choice of data types (bit, byte, word, and long word)
Wide choice of addressing modes (23 types)
Enhanced functionality with signed multiply and divide instructions and the RETI instruction
Enhanced high-precision computing with 32-bit accumulator
Instruction system compatible with high-level language (C language) and multitask
Employing system stack pointer
Various enhanced pointer indirect instructions
Barrel shift instructions
Increased processing speed
4-byte instruction queue
· Serial interface
UART (LIN/SCI) : up to 4 channels
Equipped with full-duplex double buffer
Clock-asynchronous or clock-synchronous serial transmission is available
I2C interface*1 : up to 2 channels (only for devices with a C suffix in the part number)
Up to 400 Kbits/s transfer rate
· Interrupt controller
Powerful 8-level, 34-condition interrupt feature
Up to 16 external interrupts are supported
Automatic data transfer function independent of CPU
Expanded intelligent I/O service function (EI2OS) : up to 16 channels