RX671中文资料瑞萨数据手册PDF规格书

■ 32-bit RXv3 CPU core

• Maximum operating frequency: 120 MHz

Capable of 707 CoreMark in operation at 120 MHz

• Double-precision 64-bit IEEE-754 floating point

• A collective register bank save function is available.

• Supports the memory protection unit (MPU)

• JTAG and FINE (one-line) debugging interfaces

■ Low-power design and architecture

• Operation from a single 2.7- to 3.6-V supply

• Battery supply of backup power allows continued operations of the

RTC and the backup registers.

• Four low-power modes

■ On-chip code flash memory

• Supports versions with up to 2 Mbytes of ROM

• No wait cycles at up to 60 MHz or when the ROM cache is hit, onewait

state at up to 120 MHz

• User code is programmable by on-board or off-board programming.

• Programming/erasing as background operations (BGOs)

• A dual-bank structure allows exchanging the start-up bank.

■ On-chip data flash memory

• 8 Kbytes, reprogrammable up to 100,000 times

• Programming/erasing as background operations (BGOs)

■ On-chip SRAM

• 384 Kbytes of SRAM (no wait states)

• 4 Kbytes of standby RAM (backup on deep software standby)

■ External address space

• Buses for full-speed data transfer (maximum operating frequency of

60 MHz)

• 8 CS areas

• 8- or 16-bit bus space is selectable per area

• Independent SDRAM area (128 Mbytes)

■ Data transfer

• DMACAb: 8 channels

• DTCb: 1 channel

• EXDMACa: 2 channels

■ Reset and supply management

• Power-on reset (POR)

• Low voltage detection (LVD) with voltage settings

• Backup domain low power detection

■ Clock functions

• External crystal resonator or internal PLL for operation at 8 to 24

MHz

• A sub-clock oscillator connectable to a 32.768-kHz crystal resonator

• Internal 240-kHz LOCO and HOCO selectable from 16, 18, and 20

MHz

• 120-kHz clock for the IWDTa

■ Real-time clock

• Adjustment functions (30 seconds, leap year, and error)

• Real-time clock counting and binary counting modes are selectable

• Time capture in response to an event-signal input

■ Independent watchdog timer

• Operates with the 120-kHz clock frequency generated by the

dedicated low-speed oscillator

■ Useful functions for IEC60730 compliance

• Oscillation-stoppage detection, frequency measurement, CRCA,

IWDTa, self-diagnostic function for the A/D converter, etc.

• Register write protection function that protects important registers

against overwriting

■ Remote control signal receiver