MB91F314 datasheet(2/73 Pages) FUJITSU

2 / 73 page

MB91314A Series

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

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

• Instruction prefetch feature added by a 4-word queue in the CPU

• Instruction set compatible with FR family

Simple External Bus interface

Capable of functioning 8-bit or 16-bit multiplex bus by setting with program

• Operating frequency : Max 16.5 MHz

• 8/16-bit data/address multiplex I/O

• Capable of chip-select signal output for completely independent four areas settable in 64 Kbytes minimum

• Basic bus cycle : 2 cycles

• Programmable automatic wait cycle generator capable of inserting wait cycles for each area

Internal Memory

MB91314A : 256 Kbytes Mask ROM, RAM 32 Kbytes

MB91F314 : 512 Kbytes Flash, RAM 32 Kbytes

DMAC (DMA Controller)

• 5 channels

• Two forwarding factors (internal peripheral/software)

• Addressing mode 20/24-bit address selection (increment/decrement/fixed)

• Transfer modes (burst transfer/step transfer/block transfer)

• Selectable transfer data size : 8, 16, or 32 bits

Bit Search Module (for REALOS)

Search for the position of the bit 1/0-changed first in one word from the MSB

Reload Timer (Including 1 Channel for REALOS)

• 16-bit timer ch.6

• The internal clock is optional from 2/8/32 division

Multi function Serial Interface

• 11 channels

• Full duplex double buffer

• Capable of selecting communication mode : asynchronous (Start-Stop synchronous) communication,

clock synchronous communication (8.25 Mbps Max), I2C* standard mode (100 kbps Max),

high-speed mode (400 kbps Max)

• Parity on/off selectable

• Baud rate generator per channel

• Abundant error detection functions are provided (parity, frame, and overrun)

• External clock can be used as transfer clock

• Ch.0 to ch.2 correspond to DMA transfer.

• Ch.0 to ch.2 have a pair of 16 bytes FIFO buffers for transmission and reception.

•I2C bridge feature (among channels 0, 1, and 2)

• SPI mode

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MB91F314 Datasheet(PDF) 2 Page - fujitsu semiconductor