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Section 1 Overview
1.1
Overview
The H8/3008 is a microcontroller (MCU) that integrates system supporting functions together with
an H8/300H CPU core having an original Hitachi architecture.
The H8/300H CPU has a 32-bit internal architecture with sixteen 16-bit general registers, and a
concise, optimized instruction set designed for speed. It can address a 16-Mbyte linear address
space. Its instruction set is upward-compatible at the object-code level with the H8/300 CPU,
enabling easy porting of software from the H8/300 Series.
The on-chip system supporting functions include RAM, a 16-bit timer, an 8-bit timer, a
programmable timing pattern controller (TPC), a watchdog timer (WDT), a serial communication
interface (SCI), an A/D converter, a D/A converter, I/O ports, and other facilities.
Six MCU operating modes offer a choice of bus width and address space size. The modes (modes
1 to 4) include four expanded modes.
Table 1.1 summarizes the features of the H8/3008.
1
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