Overview

The SH7144 Group and SH7145 Group single-chip RISC (Reduced Instruction Set Computer)

microcomputers integrate a Renesas Technology original RISC CPU core with peripheral functions required for system configuration.

The SH7144 Group and SH7145 Group CPU has a RISC-type instruction set. Most instructions

can be executed in one state (one system clock cycle), which greatly improves instruction

execution speed. In addition, the 32-bit internal-bus architecture enhances data processing power.

With this CPU, it has become possible to assemble low cost, high performance/high-functioning

systems, even for applications that were previously impossible with microcomputers, such as realtime control, which demands high speeds.

Features

• Central processing unit with an internal 32-bit RISC (Reduced Instruction Set Computer)architecture

⎯ Instruction length: 16-bit fixed length for improved code efficiency

⎯ Load-store architecture (basic operations are executed between registers)

⎯ Sixteen 32-bit general registers

⎯ Five-stage pipeline

⎯ On-chip multiplier: multiplication operations (32 bits× 32 bits →64 bits) executed in two to four cycles

⎯ C language-oriented 62 basic instructions

• Various peripheral functions

⎯ Direct memory access controller (DMAC)

⎯ Data transfer controller (DTC)

⎯ Multifunction timer/pulse unit (MTU)

⎯ Compare match timer (CMT)

⎯ Watchdog timer (WDT)

⎯ Asynchronous or clocked synchronous serial communication interface (SCI)

⎯ I2C bus interface (IIC)*1

⎯ 10-bit A/D converter

⎯ Clock pulse generator

⎯ User break controller (UBC)

⎯ User debugging interface (H-UDI)*2

⎯ Advanced user debugger (AUD)*2

Notes: 1. Option

2. Supported only for flash memory version.