HD6417708RF100 데이터 시트보기 (PDF) - Renesas Electronics

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HD6417708RF100

Hitachi SuperH™ RISC engine

Renesas Electronics 

Section 1 Overview and Pin Functions

1.1 SH7708 Series Features

The SH7708, SH7708S, and SH7708R(SH7708 Series) are 32-bit RISC (reduced instruction set

computer) microcomputers, featuring object code upward-compatibility with SH-1 and SH-2

microcomputers. The SH7708R is completely pin compatible with the SH7708S. It includes an 8-

kbyte cache with a choice of write-back or write-through mode, and an MMU (memory

management unit) with a 128-entry 4-way set associative TLB (translation lookaside buffer).

The SH7708 Series has an on-chip bus state controller (BSC) that allows direct connection to

DRAM, synchronous DRAM (SDRAM), and pseudo-SRAM (PSRAM) without external circuitry.

Its 16-bit fixed-length instruction set enables program code size to be reduced by almost 50%

compared with 32-bit instructions.

The features of the SH7708 Series are summarized in table 1.1.

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