Overview - Fujitsu MB91260B Series Hardware Manual

CHAPTER 1 OVERVIEW
1.1

Overview

The MB91260B series is a line of Fujitsu's general-purpose 32-bit RISC microcontrollers
designed for embedded control applications which require high-speed processing. The
MB91260B contains an FR60Lite CPU core compatible with the FR family of CPUs.
■ Features
●
FR60Lite CPU
• 32-bit RISC, load/store architecture, five pipelines
• Maximum operating frequency: 33 MHz (oscillation frequency of 4.192 MHz multiplied by 8 (by PLL
clock multiplication)
• 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 and exit instructions and register multi-load/store instructions: Instructions compatible
with the C language
• Register interlock function: Facilitating assembly-language coding
• Built-in multiplier with instruction-level support
• Signed 32-bit multiplication: 5 cycles
• Signed 16-bit multiplication: 3 cycles
• Interrupts (PC/PS saving): 6 cycles (16 priority levels)
• Harvard architecture enabling simultaneous execution of both program access and data access
• Instruction-compatible with the FR family
●
Built-in peripheral resources
• Built-in ROM capacity and type
MASK ROM:
FLASH ROM: 256 KB (MB91F264B)
• Built-in RAM capacity: 8 KB
• A/D converters (successive approximation type)
Resolution: 10 bits:8 channels × 1 unit, 2 channels × 2 units
Conversion time: 1.2 µs (minimum conversion time at a system clock of 33 MHz)
• External interrupt inputs: 10 channels
• Bit search module (used by REALOS)
This feature searches for the first bit position causing a 1-to-0 transition in the MSB (most significant
bit) of a word.
2
128 KB (MB91263B), 256 KB (MB91264B)
1.35 µs (minimum conversion time at a system clock of 20 MHz)