This document describes the features and characteristics of the 32-bit Microcontroller CMOS FR60 MB91350A series from Fujitsu Semiconductor. The series of microcontrollers feature a variety of built-in I/O resources and bus control functions, and employ a high-performance 32-bit RISC CPU for embedded control applications that demand powerful and fast CPU processing capabilities.
The MB91350A series belongs to Fujitsu's FR family of 32‑bit RISC microcontrollers. It offers a high‑performance CPU, extensive on‑chip peripherals, and a range of memory and bus options for embedded control applications.
The datasheet details the core architecture, bus interfaces, built‑in memory options, DMA controller, timers, UART, A/D and D/A converters, I/O ports, and package information, along with electrical characteristics and ordering data.
| Maximum CPU frequency | 50 MHz |
|---|---|
| Instruction length | 16‑bit fixed length |
| Instruction throughput | 1 instruction per cycle |
| On‑chip multiplier | Signed 32‑bit multiplication: 5 cycles; Signed 16‑bit multiplication: 3 cycles |
| Interrupt priority levels | 16 |
| Bus interface maximum frequency | 25 MHz |
| Address space | 24‑bit (16 Mbyte) |
| DMA channels | Up to 5 simultaneous channels |
| UART baud‑rate support | 115 kbps |
| A/D converter resolution | 10‑bit, 12 channels |
| D/A converter resolution | 8‑bit, 3 channels |
| Power supply voltage | 2.7 V – 3.6 V (3.3 V ± 0.3 V typical) |
| Package types | LQFP‑176 (0.50 mm pitch) and LQFP‑120 (0.50 mm pitch) |
The FRCPU can run up to 50 MHz when using the PLL.
It provides 16 programmable interrupt priority levels.
The devices operate from 2.7 V to 3.6 V (typical 3.3 V ± 0.3 V).
Up to five DMA channels can operate at the same time.