■ DESCRIPTION

The FR family* is a line of microcontrollers based on a high-performance 32-bit RISC CPU that contains a variety of built-in I/O resources for embedded control applications which require high-performance, high-speed CPU processing. MB91313 series has multiple communication macro channels, suitable for embedded control applications such as TV control.

■ FEATURES

1. FR CPU

• 32-bit RISC load/store architecture with a five-stage pipeline

• Operating frequency 33 MHz (oscillator frequency: 16.5 MHz; oscillator frequency multiplier: 2 (PLL clock

multiplication method))

• 16-bit fixed length instructions (basic instructions)

• Instruction execution speed : 1 instruction per cycle

• Instructions including memory-to-memory transfer, bit manipulation, and barrel shift instructions : Instructions suitable for embedded applications

• Function entry/exit instructions and register data multi-load store instructions : Instructions supporting C language

• Register interlock functions : Facilitates assembly-language coding

• On-chip multiplier supported at the instruction level

- Signed 32-bit multiplication : 5 cycles

- Signed 16-bit multiplication : 3 cycles

• Interrupt (PC, PS save) : 6 cycles, 16 priority levels

• Harvard architecture enabling program access and data access to be executed simultaneously

• Instruction prefetch feature implemented using a 4-word queue in the CPU

• Instruction compatible with the FR family