SH7261 datasheet(33/1348 Pages) RENESAS

33 / 1348 page

Section 1 Overview

Rev. 2.00 Sep. 07, 2007 Page 1 of 1312

REJ09B0320-0200

Section 1 Overview

1.1

SH7261 Group Features

This LSI is a single-chip RISC (Reduced Instruction Set Computer) microprocessor that integrates

a Renesas Technology original RISC CPU core with peripheral functions required for system

configuration.

The CPU incorporated in this LSI is the SH-2A CPU, which features upward compatibility on the

object code level with the SH-1, SH-2, and SH-2E microcomputers. The CPU has a RISC-type

instruction set and employs a superscalar architecture and the Harvard architecture, which greatly

improves instruction execution speed. In addition, the 32-bit internal-bus architecture independent

of the bus for the direct memory access controller (DMAC) enhances data processing power. This

CPU realizes low-cost, high-performance, and high-functioning systems for applications such as

high-speed realtime control, which has been next to impossible with the conventional

microcomputers.

This LSI has a floating-point unit and a cache.

In addition, this LSI includes on-chip peripheral functions necessary for system configuration,

such as, 32-Kbyte RAM for high-speed operation, a controller area network (RCAN-ET)*

IEBus

TM*2 controller (IEB)*3, CD-ROM decoder (ROM-DEC), a serial sound interface (SSI), a

serial communication interface with FIFO (SCIF), I

2C bus interface 3 (IIC3), a multi-function

timer pulse unit 2 (MTU2), an 8-bit timer (TMR), a realtime clock (RTC), an A/D converter, a

D/A converter, an interrupt controller (INTC), I/O ports, and advanced user debugger II (AUD-II).

This LSI also provides an external memory access support function to enable direct connection to

various memory devices or peripheral LSIs. These on-chip functions significantly reduce costs of

designing and manufacturing application systems.

The features of this LSI are listed in table 1.1.

Notes: 1. R5S72611 and R5S72613 support this function.

2. The IEBus

TM (Inter Equipment BusTM) is a trademark of NEC Electronics Corporation.

3. R5S72612 and R5S72613 support this function.

SH7261 датащи(PDF) 33 Page - Renesas Technology Corp