RX72N中文资料瑞萨数据手册PDF规格书

特性 Features

■ 32-bit RXv3 CPU core

 Maximum operating frequency: 240 MHz

Capable of 1396 CoreMark in operation at 240 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

 RTC is capable of operation from a dedicated power supply.

 Four low-power modes

■ On-chip code flash memory

 Supports versions with up to 4 Mbytes of ROM

 No wait cycles at up to 120 MHz or when the ROM cache is hit,

one-wait state at above 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

 32 Kbytes, reprogrammable up to 100,000 times

 Programming/erasing as background operations (BGOs)

■ On-chip SRAM

 1 Mbyte of SRAM (no wait states; however, if ICLK is at a

frequency above 120 MHz, access to locations in the 512 Kbytes of

SRAM from 0080 0000h to 0087 FFFFh requires one cycle of

waiting)

 32 Kbytes of RAM with ECC (single error correction/double error

detection)

 8 Kbytes of standby RAM (backup on deep software standby)

■ Data transfer

 DMACAa: 8 channels

 DTCb: 1 channel

 EXDMAC: 2 channels

 DMAC for the Ethernet controller: 3 channels

■ Reset and supply management

 Power-on reset (POR)

 Low voltage detection (LVD) with voltage settings

■ Clock functions

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

MHz

 PLL for specific purposes

 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 function

(for capturing times in response to event-signal input)

■ Independent watchdog timer

 120-kHz clock operation

■ 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 can protect values in important

registers against overwriting.