This document provides the hardware manual for the H8/3644 series microprocessors, including H8/3644, HD6473644, HD6433644, H8/3643, HD6433643, H8/3642, HD6433642, H8/3641, HD6433641, H8/3640, HD6433640, H8/3644F-ZTAT™, HD64F3644, H8/3643F-ZTAT™, HD64F3643, H8/3642AF-ZTAT™, HD64F3642A, etc. These products have certain features and characteristics.
This hardware manual describes the H8/3644 series of single‑chip microcomputers, which feature a system‑on‑a‑chip architecture with integrated peripherals such as converters, timers, PWM, and serial interfaces. It is intended for designers and engineers who need to understand the device's internal structure, pin assignments, and register configurations.
The document is organized into sections covering an overview, block diagrams, pin arrangement, register descriptions, exception handling, clock generation, power‑down modes, ROM and RAM structures, VO ports, and timer modules, providing the information required for hardware design and integration.
| Peripheral Functions | D/A converter, five timers, 14‑bit PWM, two‑channel serial interface, A/D converter |
|---|---|
| Architecture Type | system‑on‑a‑chip |
| Serial Interface Channels | two‑channel |
| Package Dimensions | 14.0+0.2 mm |
The H8/3644 series includes a D/A converter, five timers, a 14‑bit PWM, a two‑channel serial communication interface, and an A/D converter.
Pin arrangement and functions are detailed in Section 1.3 of the manual, titled "Pin Arrangement and Functions".
Hitachi warns that product specifications may change without notice, and users should ensure the product is used within guaranteed ranges for voltage, temperature, and other characteristics.