The H8/538F extends the field programmability of Hitachi’s ZTAT™*1 family of
microcontrollers, which have user-programmable on-chip ROM. The H8/538F is the first
microcontroller in the F-ZTAT™*2 family, which has on-chip flash memory that can be
The H8/538F is an original Hitachi high-performance single-chip microcontroller with a high-
speed 16-bit CPU core and extensive on-chip peripheral functions. The H8/538 is suitable for
controlling a wide range of medium-scale office and industrial equipment and consumer products.
The general-register architecture and highly orthogonal, optimized instruction set of the CPU
enable even programs coded in the high-level C language to be compiled into efficient object
Many of the peripheral functions needed in microcontroller application systems are provided on-
chip, including large RAM and ROM, a powerful set of timers, a serial interface, a high-precision
A/D converter, and I/O ports. Compact, high-performance systems can be implemented easily
using the H8/538F. On-chip flash memory enables the H8/538F to execute high-speed data
transfers and high-speed computations.
This document describes the H8/538F hardware. For further details about the instruction set, refer
to the H8/500 Series Programming Manual.
Notes: 1. ZTAT™ (Zero Turn-Around Time) is a trademark of Hitachi, Ltd.
2. F-ZTAT™ (Flexible-ZTAT) is a trademark of Hitachi, Ltd.
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