h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 27

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 1 Overview
Section 1 Overview
1.1
Overview
The H8S/2646 Group is a series of microcomputers (MCUs: microcomputer units), built around
the H8S/2600 CPU, employing Renesas Technology’s proprietary architecture, and equipped with
peripheral functions on-chip.
The H8S/2600 CPU has an internal 32-bit architecture, is provided with sixteen 16-bit general
registers and a concise, optimized instruction set designed for high-speed operation, and can
address a 16-Mbyte linear address space. The instruction set is upward-compatible with H8/300
and H8/300H CPU instructions at the object-code level, facilitating migration from the H8/300,
H8/300L, or H8/300H Series.
On-chip peripheral functions required for system configuration include data transfer controller
(DTC) bus masters, ROM and RAM memory, a 16-bit timer pulse unit (TPU), programmable
pulse generator (PPG), watchdog timer (WDT), serial communication interface (SCI), controller
area network (HCAN), A/D converter, motor control PWM timer (PWM), LCD controller/driver
(LCDC), and I/O ports.
On-chip ROM is available as 128-kbyte flash memory (F-ZTAT™ version) * or 128/64-kbyte
mask ROM. ROM is connected to the CPU via a 16-bit data bus, enabling both byte and word data
to be accessed in one state. Instruction fetching has been speeded up, and processing speed
increased.
Four operating modes, modes 4 to 7, are provided, and there is a choice of single-chip mode or
external expansion mode.
The features of the H8S/2646 Group are shown in table 1.1.
Note: * F-ZTAT is a trademark of Renesas Technology Corp.
Rev. 5.00 Sep 22, 2005 page 1 of 1136
REJ09B0257-0500