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The MB90350-series with 1 channel FULL-CAN interface and Flash ROM is especially designed for automotive and industrial applications. Its main feature is the on-board CAN interface, which conforms 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?μm CMOS technology, Cypress now offers on-chip Flash-ROM program memory up to 128 Kbytes.

Features

Clock

■ Built-in PLL clock frequency multiplication circuit

■ Selection of machine clocks (PLL clocks) is allowed among frequency division by two on oscillation clock, and multiplication of 1 to 6 times of oscillation clock (for 4 MHz oscillation clock, 4 MHz to 24 MHz).

■ Operation by sub clock (up to 50 kHz : 100 kHz oscillation clock divided by two) is allowed. (devices without S-suffix only)

■ Minimum execution time of instruction : 42 ns (when operating with 4-MHz oscillation clock, and 6-time multiplied PLL clock).

■ Built-in clock modulation circuit

16 Mbytes CPU memory space

■ 24-bit internal addressing Clock monitor function (MB90x356x and MB90x357x only)

■ Main clock or sub clock is monitored independently.

■ Internal CR oscillation clock (100 kHz typical) can be used as sub clock.

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 multiply-divide instructions with sign and RETI instructions

■ Enhanced high-precision computing with 32-bit accumulator

Instruction system compatible with high-level language (C language) and multitask

■ Employing system stack pointer

■ Enhanced various pointer indirect instructions

■ Barrel shift instructions

Increased processing speed

■ 4-byte instruction queue

Powerful interrupt function

■ Powerful 8-level, 34-condition interrupt feature

■ Up to 8 channels external interrupts are supported

Automatic data transfer function independent of CPU

■ Extended intelligent I/O service function (EI2OS) : up to 16 channels

■ DMA: up to 16 channels

Low power consumption (standby) mode

■ Sleep mode (a mode that halts CPU operating clock)

■ Main timer mode (a timebase timer mode switched from the main clock mode)

■ PLL timer mode (a timebase timer mode switched from the PLL clock mode)

■ Watch mode (a mode that operates sub clock and watch timer only)

■ Stop mode (a mode that stops oscillation clock and sub clock)

■ CPU intermittent operation mode

Process

■ CMOS technology

I/O port

■ General-purpose input/output port (CMOS output)

? 49 ports (devices without S-suffix : devices that correspond to sub clock)

? 51 ports (devices with S-suffix : devices that do not correspond to sub clock)

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