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■ DESCRIPTION

The MB91260B series is a 32-bit RISC microcontroller designed by Fujitsu for embedded control applications which require high-speed processing.

The CPU is used the FR family and the compatibility of FR60Lite.

■ FEATURES

? FR60Lite CPU

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

? Maximum operating frequency : 33 MHz (oscillation frequency 4.192 MHz, oscillation frequency 8-multiplier (PLL clock multiplication method)

? 16-bit fixed length instructions (basic instructions)

? Execution speed of instructions : 1 instruction per cycle

? Memory-to-memory transfer, bit handling, barrel shift instructions, etc : Instructions suitable for embedded applications

? Function entry/exit instructions, multiple-register load/store instructions : Instructions adapted for C-language

? Register interlock function : Facilitates coding in assembler.

? Built-in multiplier with instruction-level support

? 32 bit multiplication with sign : 5 cycles

? 16 bit multiplication with sign : 3 cycles

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

? Harvard architecture allowing program access and data access to be executed simultaneously

? FR family instruction compatible

? Internal peripheral functions

? Capacity of internal ROM and ROM type

MASK ROM : 128 KB (MB91263B)

FLASH ROM : 256 KB (MB91F264B)

? Capacity of internal RAM : 8 KB

? A/D converter (sequential comparison type)

? Resolution : 10 bits : 2 ch × 2 units, 8 ch × 1 unit

? Conversion time : 1.2 μs (Minimum conversion time system clock at 33 MHz)

1.35 μs (Minimum conversion time system clock at 20 MHz)

? External interrupt input : 10 ch

? Bit search module (for REALOS)

Function for searching the MSB in each word for the first 1-to-0 inverted bit position

? UART (Full-duplex double buffer) : 3 ch

Selectable parity On/Off

Asynchronous (start-stop synchronized) or clock-synchronous communications selectable

Internal timer for dedicated baud rate (U-Timer) on each channel

External clock can be used as transfer clock

Error detection function for parity, frame and overrun errors

? 8/16-bit PPG timer : 16 ch (at 8-bit) / 8 ch (at 16-bit)

? Reload timer : 3 ch (with cascade mode, without output of reload timer 0)

? Free-run timer : 1 ch

? PWC timer : 2 ch

? Input capture : 4 ch (interface with free-run timer)

? Output compare : 6 ch (interface with free-run timer)

? Waveform generator

Various waveforms which are generated by using output compare, 16-bit PPG timer 0 and 16-bit dead timer

? SUM of products macro (simple DSP)

RAM : instruction RAM 256 × 16-bit

XRAM 64 × 16-bit

YRAM 64 × 16-bit

Execution of 1 cycle product addition (16-bit × 16-bit + 40 bits)

Operation results are extracted rounded from 40 to 16 bits

? DMAC (DMA Controller) : 5 ch

Operation of transfer and activation by internal peripheral interrupts and software

? Watchdog timer

? Low Power Consumption Mode

Sleep/stop function

? Package : QFP-100, LQFP-100

? Technology : CMOS 0.35 μm

? Power supply : 1-power supply [Vcc = 4.0 V to 5.5 V]