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 have 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.
