HD64F3028F25 Datasheet, PDF (33/925 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

Section 1 Overview
1.1 Overview
The H8/3028 Group comprises microcontrollers (MCUs) that integrate 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 ROM, 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, a direct memory access controller
(DMAC), and other facilities.
The H8/3028 Group has 384 kbytes of ROM and 16 kbytes of RAM.
Seven MCU operating modes offer a choice of bus width and address space size. The modes
(modes 1 to 7) include two single-chip modes and five expanded modes.
In addition to the mask-ROM version of the H8/3028 Group, an F-ZTAT* version with an on-
chip flash memory that can be freely programmed and reprogrammed by the user after the board is
installed is also available. This version enables users to respond quickly and flexibly to changing
application specifications, growing production volumes, and other conditions.
Table 1.1 summarizes the features of the H8/3028 Group.
Note: * F-ZTAT™ (Flexible ZTAT) is a trademark of Renesas Technology Corp.
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