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■DESCRIPTIONS

MB91245/S series is Fujitsu Microelectronics’s general-purpose 32-bit RISC microcontroller, which is designed

for embedded control applications that require high-speed real-time processing of consumer appliances. This

microcontroller uses FR60Lite as its CPU, compatible with other products in the FR* family. This series incorporates an LCD controller and stepping motor controller.

■FEATURES

? FR60Lite CPU

? 32-bit RISC, load/store architecture, 5-stage pipeline

? Maximum operating frequency : 32 MHz (Source oscillation is 4 MHz with x8 multiplier – PLL clock multiplier

system)

? 16-bit fixed-length instructions (basic instructions)

? Instruction execution speed : 1 instruction per cycle

? Instruction set optimized for embedded application : Memory-to-memory transfer, bit manipulation, barrel shift instructions etc.

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

? Register interlock function : Easier assembler coding enabled

? Built-in 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 allowing program access and data access to be executed simultaneously.

? Instruction set compatible with FR family

? Internal Peripheral Functions

? Internal ROM size & ROM type

MASK ROM : 256 Kbytes (MB91248/S) / 128 Kbytes (MB91247/S)

Flash Memory : 256 Kbytes (MB91F248/S) /512 Kbytes (MB91F249/S)

? Internal RAM size : 16 Kbytes (MB91248/S, MB91F248/S) / 8 Kbytes (MB91247/S) / 24 Kbytes (MB91F249/S) /

32 Kbytes (MB91V245A)

? General-purpose ports : up to 120 ports (includes 4 input-only ports)

? 8/10-bit A/D converter (Sequential comparison type)

8/10-bit resolution : 32 channels

Conversion time : 3 μs (16/32 MHz)

Set the PLL multiplier and the division ratio of peripheral circuit clocks so that the above conversion time is

achieved.

32 MHz : Source oscillation (4 MHz)with x8 multiplier, divided by 1

16 MHz : Source oscillation withx8 multiplier, divided by 2

? External interrupt : 8 channels

? Bit search module (for REALOS)

Search function to locate the position of the first bit that changes from “1” to “0” in one word, from the MSB

(Most Significant Bit)

? UART (full duplex double buffer type) : 1 channel

Parity enable/disable selectable

Asynchronous clock operation (start-stop synchronization) and synchronous clock operation selectable

Dedicated baud-rate timer (U-Timer) embedded in each channel

External clock can be used as transfer clock

Parity, frame, overrun error detection functions provided

? LIN-UART (full duplex double buffer type) : 3 channels

Synchronous/asynchronous clock operations selectable Sync-break detection

Dedicated built-in baud-rate generator

? Stepping motor controller (SMC) : 6 channels

8-bit PWM with 4 high-current outputs for each channel

? 8/16-bit PPG timer : 8/4 channels

? 16-bit reload timer : 3 channels

? 16-bit free-run timer : 2 channels (ICU/OCU linkage)

? 16-bit pulse width counter : 1 channel

? Input capture : 4 channels (linked to ch.0 and ch.1 of free-run timer) ch.0 linked to PWC

? Output compare : 2 channels (linked to ch.0 of free-run timer)

? LCD controller : SEG00 to SEG31/COM0 to COM3 (shared with port)

? 16-bit timebase/watch dog timer

? Sound generator

? Real-time clock

? 32 kHz sub clock (not supported in single clock products)

? C-CAN : 2 channels

? Low power consumption modes : sleep mode, stop mode, watch mode

? Package : LQFP-144 (FPT-144P-M08)

? CMOS technology : 0.35 μm

? Power supply voltage : 5 V (Internal logic : 3.3 V, I/O : 5.0 V (step-down circuit used))